Merge remote-tracking branch 'upstream/develop' into resource-meta

Signed-off-by: TheKodeToad <TheKodeToad@proton.me>
2025-05-04 08:34:30 +02:00 · 2024-10-23 14:19:07 +01:00 · 2024-10-23 14:19:07 +01:00 · 89a327d363
commit 89a327d363
parent f13e875f0d 79439a0217
79 changed files with 1011 additions and 452 deletions
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@ -173,7 +173,7 @@ jobs:

      - name: Retrieve ccache cache (Windows MinGW-w64)
        if: runner.os == 'Windows' && matrix.msystem != '' && inputs.build_type == 'Debug'
-        uses: actions/cache@v4.0.2
+        uses: actions/cache@v4.1.1
        with:
          path: '${{ github.workspace }}\.ccache'
          key: ${{ matrix.os }}-mingw-w64-ccache-${{ github.run_id }}
@ -410,9 +410,8 @@ jobs:
        if: matrix.name == 'macOS'
        run: |
          if [ '${{ secrets.SPARKLE_ED25519_KEY }}' != '' ]; then
-            brew install openssl@3
            echo '${{ secrets.SPARKLE_ED25519_KEY }}' > ed25519-priv.pem
-            signature=$(/usr/local/opt/openssl@3/bin/openssl pkeyutl -sign -rawin -in ${{ github.workspace }}/PrismLauncher.zip -inkey ed25519-priv.pem | openssl base64 | tr -d \\n)
+            signature=$(/opt/homebrew/opt/openssl@3/bin/openssl pkeyutl -sign -rawin -in ${{ github.workspace }}/PrismLauncher.zip -inkey ed25519-priv.pem | openssl base64 | tr -d \\n)
            rm ed25519-priv.pem
            cat >> $GITHUB_STEP_SUMMARY << EOF
          ### Artifact Information :information_source:
@ -672,7 +671,7 @@ jobs:
        uses: actions/checkout@v4

      - name: Install Nix
-        uses: cachix/install-nix-action@v29
+        uses: cachix/install-nix-action@v30

        # For PRs
      - name: Setup Nix Magic Cache
--- a/.github/workflows/update-flake.yml
+++ b/.github/workflows/update-flake.yml
@ -17,7 +17,7 @@ jobs:

    steps:
      - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@9f70348d77d0422624097c4b7a75563948901306 # v29
+      - uses: cachix/install-nix-action@08dcb3a5e62fa31e2da3d490afc4176ef55ecd72 # v30

      - uses: DeterminateSystems/update-flake-lock@v24
        with:
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -532,10 +532,12 @@ else()
 endif()
 if(NOT cmark_FOUND)
    message(STATUS "Using bundled cmark")
+    set(ORIGINAL_BUILD_TESTING ${BUILD_TESTING})
    set(BUILD_TESTING 0)
    set(BUILD_SHARED_LIBS 0)
    add_subdirectory(libraries/cmark EXCLUDE_FROM_ALL) # Markdown parser
    add_library(cmark::cmark ALIAS cmark)
+    set(BUILD_TESTING ${ORIGINAL_BUILD_TESTING})
 else()
    message(STATUS "Using system cmark")
 endif()
--- a/flake.lock
+++ b/flake.lock
@ -49,11 +49,11 @@
    },
    "nixpkgs": {
      "locked": {
-        "lastModified": 1728018373,
-        "narHash": "sha256-NOiTvBbRLIOe5F6RbHaAh6++BNjsb149fGZd1T4+KBg=",
+        "lastModified": 1729256560,
+        "narHash": "sha256-/uilDXvCIEs3C9l73JTACm4quuHUsIHcns1c+cHUJwA=",
        "owner": "NixOS",
        "repo": "nixpkgs",
-        "rev": "bc947f541ae55e999ffdb4013441347d83b00feb",
+        "rev": "4c2fcb090b1f3e5b47eaa7bd33913b574a11e0a0",
        "type": "github"
      },
      "original": {
--- a/flatpak/org.prismlauncher.PrismLauncher.yml
+++ b/flatpak/org.prismlauncher.PrismLauncher.yml
@ -3,9 +3,7 @@ runtime: org.kde.Platform
 runtime-version: 6.7
 sdk: org.kde.Sdk
 sdk-extensions:
-  - org.freedesktop.Sdk.Extension.openjdk21
  - org.freedesktop.Sdk.Extension.openjdk17
-  - org.freedesktop.Sdk.Extension.openjdk8

 command: prismlauncher
 finish-args:
@ -22,9 +20,6 @@ finish-args:
    # FTBApp import
  - --filesystem=~/.ftba:ro

-cleanup:
-  - /lib/libGLU*
-
 modules:
  # Might be needed by some Controller mods (see https://github.com/isXander/Controlify/issues/31)
  - shared-modules/libusb/libusb.json
@ -42,23 +37,11 @@ modules:
      env:
        JAVA_HOME: /usr/lib/sdk/openjdk17/jvm/openjdk-17
        JAVA_COMPILER: /usr/lib/sdk/openjdk17/jvm/openjdk-17/bin/javac
+    run-tests: true
    sources:
      - type: dir
        path: ../

-  - name: openjdk
-    buildsystem: simple
-    build-commands:
-      - mkdir -p /app/jdk/
-      - /usr/lib/sdk/openjdk21/install.sh
-      - mv /app/jre /app/jdk/21
-      - /usr/lib/sdk/openjdk17/install.sh
-      - mv /app/jre /app/jdk/17
-      - /usr/lib/sdk/openjdk8/install.sh
-      - mv /app/jre /app/jdk/8
-    cleanup:
-      - /jre
-
  - name: glfw
    buildsystem: cmake-ninja
    config-opts:
--- a/launcher/Application.cpp
+++ b/launcher/Application.cpp
@ -1071,6 +1071,9 @@ Application::Application(int& argc, char** argv) : QApplication(argc, argv)
 bool Application::createSetupWizard()
 {
    bool javaRequired = [&]() {
+        if (BuildConfig.JAVA_DOWNLOADER_ENABLED && m_settings->get("AutomaticJavaDownload").toBool()) {
+            return false;
+        }
        bool ignoreJavaWizard = m_settings->get("IgnoreJavaWizard").toBool();
        if (ignoreJavaWizard) {
            return false;
@ -1083,10 +1086,7 @@ bool Application::createSetupWizard()
        }
        QString currentJavaPath = settings()->get("JavaPath").toString();
        QString actualPath = FS::ResolveExecutable(currentJavaPath);
-        if (actualPath.isNull()) {
-            return true;
-        }
-        return false;
+        return actualPath.isNull();
    }();
    bool askjava = BuildConfig.JAVA_DOWNLOADER_ENABLED && !javaRequired && !m_settings->get("AutomaticJavaDownload").toBool() &&
                   !m_settings->get("AutomaticJavaSwitch").toBool() && !m_settings->get("UserAskedAboutAutomaticJavaDownload").toBool();
@ -1883,3 +1883,31 @@ const QString Application::javaPath()
 {
    return m_settings->get("JavaDir").toString();
 }
+
+void Application::addQSavePath(QString path)
+{
+    QMutexLocker locker(&m_qsaveResourcesMutex);
+    m_qsaveResources[path] = m_qsaveResources.value(path, 0) + 1;
+}
+
+void Application::removeQSavePath(QString path)
+{
+    QMutexLocker locker(&m_qsaveResourcesMutex);
+    auto count = m_qsaveResources.value(path, 0) - 1;
+    if (count <= 0) {
+        m_qsaveResources.remove(path);
+    } else {
+        m_qsaveResources[path] = count;
+    }
+}
+
+bool Application::checkQSavePath(QString path)
+{
+    QMutexLocker locker(&m_qsaveResourcesMutex);
+    for (auto partialPath : m_qsaveResources.keys()) {
+        if (path.startsWith(partialPath) && m_qsaveResources.value(partialPath, 0) > 0) {
+            return true;
+        }
+    }
+    return false;
+}
--- a/launcher/Application.h
+++ b/launcher/Application.h
@ -42,6 +42,7 @@
 #include <QDebug>
 #include <QFlag>
 #include <QIcon>
+#include <QMutex>
 #include <QUrl>
 #include <memory>

@ -81,6 +82,12 @@ class Index;
 #endif
 #define APPLICATION (static_cast<Application*>(QCoreApplication::instance()))

+// Used for checking if is a test
+#if defined(APPLICATION_DYN)
+#undef APPLICATION_DYN
+#endif
+#define APPLICATION_DYN (dynamic_cast<Application*>(QCoreApplication::instance()))
+
 class Application : public QApplication {
    // friends for the purpose of limiting access to deprecated stuff
    Q_OBJECT
@ -297,4 +304,13 @@ class Application : public QApplication {
    QList<QUrl> m_urlsToImport;
    QString m_instanceIdToShowWindowOf;
    std::unique_ptr<QFile> logFile;
+
+   public:
+    void addQSavePath(QString);
+    void removeQSavePath(QString);
+    bool checkQSavePath(QString);
+
+   private:
+    QHash<QString, int> m_qsaveResources;
+    mutable QMutex m_qsaveResourcesMutex;
 };
--- a/launcher/CMakeLists.txt
+++ b/launcher/CMakeLists.txt
@ -30,6 +30,7 @@ set(CORE_SOURCES
    StringUtils.cpp
    QVariantUtils.h
    RuntimeContext.h
+    PSaveFile.h

    # Basic instance manipulation tasks (derived from InstanceTask)
    InstanceCreationTask.h
@ -1264,14 +1265,10 @@ include(CompilerWarnings)

 # Add executable
 add_library(Launcher_logic STATIC ${LOGIC_SOURCES} ${LAUNCHER_SOURCES} ${LAUNCHER_UI} ${LAUNCHER_RESOURCES})
-if(BUILD_TESTING)
-target_compile_definitions(Launcher_logic PUBLIC LAUNCHER_TEST)
-endif()
 set_project_warnings(Launcher_logic
    "${Launcher_MSVC_WARNINGS}"
    "${Launcher_CLANG_WARNINGS}"
    "${Launcher_GCC_WARNINGS}")
-target_compile_definitions(Launcher_logic PUBLIC LAUNCHER_APPLICATION)
 target_include_directories(Launcher_logic PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
 target_compile_definitions(Launcher_logic PUBLIC LAUNCHER_APPLICATION)
 target_link_libraries(Launcher_logic
--- a/launcher/FileSystem.cpp
+++ b/launcher/FileSystem.cpp
@ -45,7 +45,6 @@
 #include <QDirIterator>
 #include <QFile>
 #include <QFileInfo>
-#include <QSaveFile>
 #include <QStandardPaths>
 #include <QStorageInfo>
 #include <QTextStream>
@ -54,6 +53,7 @@
 #include <system_error>

 #include "DesktopServices.h"
+#include "PSaveFile.h"
 #include "StringUtils.h"

 #if defined Q_OS_WIN32
@ -191,8 +191,8 @@ void ensureExists(const QDir& dir)
 void write(const QString& filename, const QByteArray& data)
 {
    ensureExists(QFileInfo(filename).dir());
-    QSaveFile file(filename);
-    if (!file.open(QSaveFile::WriteOnly)) {
+    PSaveFile file(filename);
+    if (!file.open(PSaveFile::WriteOnly)) {
        throw FileSystemException("Couldn't open " + filename + " for writing: " + file.errorString());
    }
    if (data.size() != file.write(data)) {
@ -213,8 +213,8 @@ void appendSafe(const QString& filename, const QByteArray& data)
        buffer = QByteArray();
    }
    buffer.append(data);
-    QSaveFile file(filename);
-    if (!file.open(QSaveFile::WriteOnly)) {
+    PSaveFile file(filename);
+    if (!file.open(PSaveFile::WriteOnly)) {
        throw FileSystemException("Couldn't open " + filename + " for writing: " + file.errorString());
    }
    if (buffer.size() != file.write(buffer)) {
@ -971,8 +971,7 @@ bool createShortcut(QString destination, QString target, QStringList args, QStri
    if (!args.empty())
        argstring = " \"" + args.join("\" \"") + "\"";

-    stream << "#!/bin/bash"
-           << "\n";
+    stream << "#!/bin/bash" << "\n";
    stream << "\"" << target << "\" " << argstring << "\n";

    stream.flush();
@ -1016,12 +1015,9 @@ bool createShortcut(QString destination, QString target, QStringList args, QStri
    if (!args.empty())
        argstring = " '" + args.join("' '") + "'";

-    stream << "[Desktop Entry]"
-           << "\n";
-    stream << "Type=Application"
-           << "\n";
-    stream << "Categories=Game;ActionGame;AdventureGame;Simulation"
-           << "\n";
+    stream << "[Desktop Entry]" << "\n";
+    stream << "Type=Application" << "\n";
+    stream << "Categories=Game;ActionGame;AdventureGame;Simulation" << "\n";
    stream << "Exec=\"" << target.toLocal8Bit() << "\"" << argstring.toLocal8Bit() << "\n";
    stream << "Name=" << name.toLocal8Bit() << "\n";
    if (!icon.isEmpty()) {
--- a/launcher/InstanceCreationTask.cpp
+++ b/launcher/InstanceCreationTask.cpp
@ -38,22 +38,29 @@ void InstanceCreationTask::executeTask()
    // files scheduled to, and we'd better not let the user abort in the middle of it, since it'd
    // put the instance in an invalid state.
    if (shouldOverride()) {
+        bool deleteFailed = false;
+
        setAbortable(false);
        setStatus(tr("Removing old conflicting files..."));
        qDebug() << "Removing old files";

-        for (auto path : m_files_to_remove) {
+        for (const QString& path : m_files_to_remove) {
            if (!QFile::exists(path))
                continue;
+
            qDebug() << "Removing" << path;
-            if (!FS::deletePath(path)) {
-                qCritical() << "Couldn't remove the old conflicting files.";
+
+            if (!QFile::remove(path)) {
+                qCritical() << "Could not remove" << path;
+                deleteFailed = true;
+            }
+        }
+
+        if (deleteFailed) {
            emitFailed(tr("Failed to remove old conflicting files."));
            return;
        }
    }
-    }

    emitSucceeded();
-    return;
 }
--- a/launcher/Launcher.in
+++ b/launcher/Launcher.in
@ -39,8 +39,16 @@ if [ "x$DEPS_LIST" = "x" ]; then
    # Just to be sure...
    chmod +x "${LAUNCHER_DIR}/bin/${LAUNCHER_NAME}"

+    ARGS=("${LAUNCHER_DIR}/${LAUNCHER_NAME}" "${LAUNCHER_DIR}/bin/${LAUNCHER_NAME}")
+
+    if [ -f portable.txt ]; then
+        ARGS+=("-d" "${LAUNCHER_DIR}")
+    fi
+
+    ARGS+=("$@")
+
    # Run the launcher
-    exec -a "${LAUNCHER_DIR}/${LAUNCHER_NAME}" "${LAUNCHER_DIR}/bin/${LAUNCHER_NAME}" -d "${LAUNCHER_DIR}" "$@"
+    exec -a "${ARGS[@]}"

    # Run the launcher in valgrind
    # valgrind --log-file="valgrind.log" --leak-check=full --track-origins=yes "${LAUNCHER_DIR}/bin/${LAUNCHER_NAME}" -d "${LAUNCHER_DIR}" "$@"
--- a/launcher/LoggedProcess.cpp
+++ b/launcher/LoggedProcess.cpp
@ -39,7 +39,8 @@
 #include <QTextDecoder>
 #include "MessageLevel.h"

-LoggedProcess::LoggedProcess(QObject* parent) : QProcess(parent)
+LoggedProcess::LoggedProcess(const QTextCodec* output_codec, QObject* parent)
+    : QProcess(parent), m_err_decoder(output_codec), m_out_decoder(output_codec)
 {
    // QProcess has a strange interface... let's map a lot of those into a few.
    connect(this, &QProcess::readyReadStandardOutput, this, &LoggedProcess::on_stdOut);
--- a/launcher/LoggedProcess.h
+++ b/launcher/LoggedProcess.h
@ -49,7 +49,7 @@ class LoggedProcess : public QProcess {
    enum State { NotRunning, Starting, FailedToStart, Running, Finished, Crashed, Aborted };

   public:
-    explicit LoggedProcess(QObject* parent = 0);
+    explicit LoggedProcess(const QTextCodec* output_codec = QTextCodec::codecForLocale(), QObject* parent = 0);
    virtual ~LoggedProcess();

    State state() const;
@ -80,8 +80,8 @@ class LoggedProcess : public QProcess {
    QStringList reprocess(const QByteArray& data, QTextDecoder& decoder);

   private:
-    QTextDecoder m_err_decoder = QTextDecoder(QTextCodec::codecForLocale());
-    QTextDecoder m_out_decoder = QTextDecoder(QTextCodec::codecForLocale());
+    QTextDecoder m_err_decoder;
+    QTextDecoder m_out_decoder;
    QString m_leftover_line;
    bool m_killed = false;
    State m_state = NotRunning;
--- a/launcher/MTPixmapCache.h
+++ b/launcher/MTPixmapCache.h
@ -101,7 +101,7 @@ class PixmapCache final : public QObject {
     */
    bool _markCacheMissByEviciton()
    {
-        static constexpr uint maxInt = static_cast<uint>(std::numeric_limits<int>::max());
+        static constexpr uint maxCache = static_cast<uint>(std::numeric_limits<int>::max()) / 4;
        static constexpr uint step = 10240;
        static constexpr int oneSecond = 1000;

@ -118,8 +118,8 @@ class PixmapCache final : public QObject {
        if (m_consecutive_fast_evicitons >= m_consecutive_fast_evicitons_threshold) {
            // increase the cache size
            uint newSize = _cacheLimit() + step;
-            if (newSize >= maxInt) {  // increase it until you overflow :D
-                newSize = maxInt;
+            if (newSize >= maxCache) {  // increase it until you overflow :D
+                newSize = maxCache;
                qDebug() << m_consecutive_fast_evicitons
                         << tr("pixmap cache misses by eviction happened too fast, doing nothing as the cache size reached it's limit");
            } else {
--- a/launcher/PSaveFile.h
+++ b/launcher/PSaveFile.h
@ -0,0 +1,71 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (c) 2023-2024 Trial97 <alexandru.tripon97@gmail.com>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include <QFileInfo>
+#include <QSaveFile>
+#include "Application.h"
+
+#if defined(LAUNCHER_APPLICATION)
+
+/* PSaveFile
+ * A class that mimics QSaveFile for Windows.
+ *
+ * When reading resources, we need to avoid accessing temporary files
+ * generated by QSaveFile. If we start reading such a file, we may
+ * inadvertently keep it open while QSaveFile is trying to remove it,
+ * or we might detect the file just before it is removed, leading to
+ * race conditions and errors.
+ *
+ * Unfortunately, QSaveFile doesn't provide a way to retrieve the
+ * temporary file name or to set a specific template for the temporary
+ * file name it uses. By default, QSaveFile appends a `.XXXXXX` suffix
+ * to the original file name, where the `XXXXXX` part is dynamically
+ * generated to ensure uniqueness.
+ *
+ * This class acts like a lock by adding and removing the target file
+ * name into/from a global string set, helping to manage access to
+ * files during critical operations.
+ *
+ * Note: Please do not use the `setFileName` function directly, as it
+ * is not virtual and cannot be overridden.
+ */
+class PSaveFile : public QSaveFile {
+   public:
+    PSaveFile(const QString& name) : QSaveFile(name) { addPath(name); }
+    PSaveFile(const QString& name, QObject* parent) : QSaveFile(name, parent) { addPath(name); }
+    virtual ~PSaveFile()
+    {
+        if (auto app = APPLICATION_DYN) {
+            app->removeQSavePath(m_absoluteFilePath);
+        }
+    }
+
+   private:
+    void addPath(const QString& path)
+    {
+        m_absoluteFilePath = QFileInfo(path).absoluteFilePath() + ".";  // add dot for tmp files only
+        if (auto app = APPLICATION_DYN) {
+            app->addQSavePath(m_absoluteFilePath);
+        }
+    }
+    QString m_absoluteFilePath;
+};
+#else
+#define PSaveFile QSaveFile
+#endif
--- a/launcher/Version.cpp
+++ b/launcher/Version.cpp
@ -123,8 +123,7 @@ QDebug operator<<(QDebug debug, const Version& v)
        first = false;
    }

-    debug.nospace() << " ]"
-                    << " }";
+    debug.nospace() << " ]" << " }";

    return debug;
 }
--- a/launcher/java/JavaVersion.cpp
+++ b/launcher/java/JavaVersion.cpp
@ -48,6 +48,12 @@ bool JavaVersion::requiresPermGen() const
    return !m_parseable || m_major < 8;
 }

+bool JavaVersion::defaultsToUtf8() const
+{
+    // starting from Java 18, UTF-8 is the default charset: https://openjdk.org/jeps/400
+    return m_parseable && m_major >= 18;
+}
+
 bool JavaVersion::isModular() const
 {
    return m_parseable && m_major >= 9;
--- a/launcher/java/JavaVersion.h
+++ b/launcher/java/JavaVersion.h
@ -25,7 +25,7 @@ class JavaVersion {
    bool operator>(const JavaVersion& rhs);

    bool requiresPermGen() const;
-
+    bool defaultsToUtf8() const;
    bool isModular() const;

    QString toString() const;
--- a/launcher/launch/LaunchTask.cpp
+++ b/launcher/launch/LaunchTask.cpp
@ -51,14 +51,14 @@ void LaunchTask::init()
    m_instance->setRunning(true);
 }

-shared_qobject_ptr<LaunchTask> LaunchTask::create(InstancePtr inst)
+shared_qobject_ptr<LaunchTask> LaunchTask::create(MinecraftInstancePtr inst)
 {
    shared_qobject_ptr<LaunchTask> proc(new LaunchTask(inst));
    proc->init();
    return proc;
 }

-LaunchTask::LaunchTask(InstancePtr instance) : m_instance(instance) {}
+LaunchTask::LaunchTask(MinecraftInstancePtr instance) : m_instance(instance) {}

 void LaunchTask::appendStep(shared_qobject_ptr<LaunchStep> step)
 {
--- a/launcher/launch/LaunchTask.h
+++ b/launcher/launch/LaunchTask.h
@ -37,6 +37,7 @@

 #pragma once
 #include <QObjectPtr.h>
+#include <minecraft/MinecraftInstance.h>
 #include <QProcess>
 #include "BaseInstance.h"
 #include "LaunchStep.h"
@ -46,21 +47,21 @@
 class LaunchTask : public Task {
    Q_OBJECT
   protected:
-    explicit LaunchTask(InstancePtr instance);
+    explicit LaunchTask(MinecraftInstancePtr instance);
    void init();

   public:
    enum State { NotStarted, Running, Waiting, Failed, Aborted, Finished };

   public: /* methods */
-    static shared_qobject_ptr<LaunchTask> create(InstancePtr inst);
+    static shared_qobject_ptr<LaunchTask> create(MinecraftInstancePtr inst);
    virtual ~LaunchTask() = default;

    void appendStep(shared_qobject_ptr<LaunchStep> step);
    void prependStep(shared_qobject_ptr<LaunchStep> step);
    void setCensorFilter(QMap<QString, QString> filter);

-    InstancePtr instance() { return m_instance; }
+    MinecraftInstancePtr instance() { return m_instance; }

    void setPid(qint64 pid) { m_pid = pid; }

@ -115,7 +116,7 @@ class LaunchTask : public Task {
    void finalizeSteps(bool successful, const QString& error);

   protected: /* data */
-    InstancePtr m_instance;
+    MinecraftInstancePtr m_instance;
    shared_qobject_ptr<LogModel> m_logModel;
    QList<shared_qobject_ptr<LaunchStep>> m_steps;
    QMap<QString, QString> m_censorFilter;
--- a/launcher/minecraft/World.cpp
+++ b/launcher/minecraft/World.cpp
@ -38,7 +38,6 @@
 #include <QDebug>
 #include <QDir>
 #include <QDirIterator>
-#include <QSaveFile>
 #include <QString>

 #include <FileSystem.h>
@ -57,6 +56,7 @@
 #include <optional>

 #include "FileSystem.h"
+#include "PSaveFile.h"

 using std::nullopt;
 using std::optional;
@ -183,7 +183,7 @@ bool putLevelDatDataToFS(const QFileInfo& file, QByteArray& data)
    if (fullFilePath.isNull()) {
        return false;
    }
-    QSaveFile f(fullFilePath);
+    PSaveFile f(fullFilePath);
    if (!f.open(QIODevice::WriteOnly)) {
        return false;
    }
--- a/launcher/minecraft/auth/Parsers.cpp
+++ b/launcher/minecraft/auth/Parsers.cpp
@ -180,6 +180,7 @@ bool parseMinecraftProfile(QByteArray& data, MinecraftProfile& output)
        if (!getString(skinObj.value("url"), skinOut.url)) {
            continue;
        }
+        skinOut.url.replace("http://textures.minecraft.net", "https://textures.minecraft.net");
        if (!getString(skinObj.value("variant"), skinOut.variant)) {
            continue;
        }
@ -221,9 +222,9 @@ namespace {
 // these skin URLs are for the MHF_Steve and MHF_Alex accounts (made by a Mojang employee)
 // they are needed because the session server doesn't return skin urls for default skins
 static const QString SKIN_URL_STEVE =
-    "http://textures.minecraft.net/texture/1a4af718455d4aab528e7a61f86fa25e6a369d1768dcb13f7df319a713eb810b";
+    "https://textures.minecraft.net/texture/1a4af718455d4aab528e7a61f86fa25e6a369d1768dcb13f7df319a713eb810b";
 static const QString SKIN_URL_ALEX =
-    "http://textures.minecraft.net/texture/83cee5ca6afcdb171285aa00e8049c297b2dbeba0efb8ff970a5677a1b644032";
+    "https://textures.minecraft.net/texture/83cee5ca6afcdb171285aa00e8049c297b2dbeba0efb8ff970a5677a1b644032";

 bool isDefaultModelSteve(QString uuid)
 {
--- a/launcher/minecraft/launch/AutoInstallJava.cpp
+++ b/launcher/minecraft/launch/AutoInstallJava.cpp
@ -58,7 +58,7 @@

 AutoInstallJava::AutoInstallJava(LaunchTask* parent)
    : LaunchStep(parent)
-    , m_instance(std::dynamic_pointer_cast<MinecraftInstance>(m_parent->instance()))
+    , m_instance(m_parent->instance())
    , m_supported_arch(SysInfo::getSupportedJavaArchitecture()) {};

 void AutoInstallJava::executeTask()
--- a/launcher/minecraft/launch/CreateGameFolders.cpp
+++ b/launcher/minecraft/launch/CreateGameFolders.cpp
@ -8,16 +8,15 @@ CreateGameFolders::CreateGameFolders(LaunchTask* parent) : LaunchStep(parent) {}
 void CreateGameFolders::executeTask()
 {
    auto instance = m_parent->instance();
-    std::shared_ptr<MinecraftInstance> minecraftInstance = std::dynamic_pointer_cast<MinecraftInstance>(instance);

-    if (!FS::ensureFolderPathExists(minecraftInstance->gameRoot())) {
+    if (!FS::ensureFolderPathExists(instance->gameRoot())) {
        emit logLine("Couldn't create the main game folder", MessageLevel::Error);
        emitFailed(tr("Couldn't create the main game folder"));
        return;
    }

    // HACK: this is a workaround for MCL-3732 - 'server-resource-packs' folder is created.
-    if (!FS::ensureFolderPathExists(FS::PathCombine(minecraftInstance->gameRoot(), "server-resource-packs"))) {
+    if (!FS::ensureFolderPathExists(FS::PathCombine(instance->gameRoot(), "server-resource-packs"))) {
        emit logLine("Couldn't create the 'server-resource-packs' folder", MessageLevel::Error);
    }
    emitSucceeded();
--- a/launcher/minecraft/launch/ExtractNatives.cpp
+++ b/launcher/minecraft/launch/ExtractNatives.cpp
@ -70,17 +70,16 @@ static bool unzipNatives(QString source, QString targetFolder, bool applyJnilibH
 void ExtractNatives::executeTask()
 {
    auto instance = m_parent->instance();
-    std::shared_ptr<MinecraftInstance> minecraftInstance = std::dynamic_pointer_cast<MinecraftInstance>(instance);
-    auto toExtract = minecraftInstance->getNativeJars();
+    auto toExtract = instance->getNativeJars();
    if (toExtract.isEmpty()) {
        emitSucceeded();
        return;
    }
-    auto settings = minecraftInstance->settings();
+    auto settings = instance->settings();

-    auto outputPath = minecraftInstance->getNativePath();
+    auto outputPath = instance->getNativePath();
    FS::ensureFolderPathExists(outputPath);
-    auto javaVersion = minecraftInstance->getJavaVersion();
+    auto javaVersion = instance->getJavaVersion();
    bool jniHackEnabled = javaVersion.major() >= 8;
    for (const auto& source : toExtract) {
        if (!unzipNatives(source, outputPath, jniHackEnabled)) {
--- a/launcher/minecraft/launch/LauncherPartLaunch.cpp
+++ b/launcher/minecraft/launch/LauncherPartLaunch.cpp
@ -48,12 +48,14 @@
 #include "gamemode_client.h"
 #endif

-LauncherPartLaunch::LauncherPartLaunch(LaunchTask* parent) : LaunchStep(parent)
+LauncherPartLaunch::LauncherPartLaunch(LaunchTask* parent)
+    : LaunchStep(parent)
+    , m_process(parent->instance()->getJavaVersion().defaultsToUtf8() ? QTextCodec::codecForName("UTF-8") : QTextCodec::codecForLocale())
 {
-    auto instance = parent->instance();
-    if (instance->settings()->get("CloseAfterLaunch").toBool()) {
+    if (parent->instance()->settings()->get("CloseAfterLaunch").toBool()) {
        std::shared_ptr<QMetaObject::Connection> connection{ new QMetaObject::Connection };
-        *connection = connect(&m_process, &LoggedProcess::log, this, [=](QStringList lines, [[maybe_unused]] MessageLevel::Enum level) {
+        *connection =
+            connect(&m_process, &LoggedProcess::log, this, [=](const QStringList& lines, [[maybe_unused]] MessageLevel::Enum level) {
                qDebug() << lines;
                if (lines.filter(QRegularExpression(".*Setting user.+", QRegularExpression::CaseInsensitiveOption)).length() != 0) {
                    APPLICATION->closeAllWindows();
@ -77,10 +79,9 @@ void LauncherPartLaunch::executeTask()
    }

    auto instance = m_parent->instance();
-    std::shared_ptr<MinecraftInstance> minecraftInstance = std::dynamic_pointer_cast<MinecraftInstance>(instance);

    QString legacyJarPath;
-    if (minecraftInstance->getLauncher() == "legacy" || minecraftInstance->shouldApplyOnlineFixes()) {
+    if (instance->getLauncher() == "legacy" || instance->shouldApplyOnlineFixes()) {
        legacyJarPath = APPLICATION->getJarPath("NewLaunchLegacy.jar");
        if (legacyJarPath.isEmpty()) {
            const char* reason = QT_TR_NOOP("Legacy launcher library could not be found. Please check your installation.");
@ -90,8 +91,8 @@ void LauncherPartLaunch::executeTask()
        }
    }

-    m_launchScript = minecraftInstance->createLaunchScript(m_session, m_targetToJoin);
-    QStringList args = minecraftInstance->javaArguments();
+    m_launchScript = instance->createLaunchScript(m_session, m_targetToJoin);
+    QStringList args = instance->javaArguments();
    QString allArgs = args.join(", ");
    emit logLine("Java Arguments:\n[" + m_parent->censorPrivateInfo(allArgs) + "]\n\n", MessageLevel::Launcher);

@ -102,13 +103,13 @@ void LauncherPartLaunch::executeTask()
    // make detachable - this will keep the process running even if the object is destroyed
    m_process.setDetachable(true);

-    auto classPath = minecraftInstance->getClassPath();
+    auto classPath = instance->getClassPath();
    classPath.prepend(jarPath);

    if (!legacyJarPath.isEmpty())
        classPath.prepend(legacyJarPath);

-    auto natPath = minecraftInstance->getNativePath();
+    auto natPath = instance->getNativePath();
 #ifdef Q_OS_WIN
    natPath = FS::getPathNameInLocal8bit(natPath);
 #endif
--- a/launcher/minecraft/launch/ModMinecraftJar.cpp
+++ b/launcher/minecraft/launch/ModMinecraftJar.cpp
@ -42,7 +42,7 @@

 void ModMinecraftJar::executeTask()
 {
-    auto m_inst = std::dynamic_pointer_cast<MinecraftInstance>(m_parent->instance());
+    auto m_inst = m_parent->instance();

    if (!m_inst->getJarMods().size()) {
        emitSucceeded();
@ -82,7 +82,7 @@ void ModMinecraftJar::finalize()

 bool ModMinecraftJar::removeJar()
 {
-    auto m_inst = std::dynamic_pointer_cast<MinecraftInstance>(m_parent->instance());
+    auto m_inst = m_parent->instance();
    auto finalJarPath = QDir(m_inst->binRoot()).absoluteFilePath("minecraft.jar");
    QFile finalJar(finalJarPath);
    if (finalJar.exists()) {
--- a/launcher/minecraft/launch/ReconstructAssets.cpp
+++ b/launcher/minecraft/launch/ReconstructAssets.cpp
@ -22,12 +22,11 @@
 void ReconstructAssets::executeTask()
 {
    auto instance = m_parent->instance();
-    std::shared_ptr<MinecraftInstance> minecraftInstance = std::dynamic_pointer_cast<MinecraftInstance>(instance);
-    auto components = minecraftInstance->getPackProfile();
+    auto components = instance->getPackProfile();
    auto profile = components->getProfile();
    auto assets = profile->getMinecraftAssets();

-    if (!AssetsUtils::reconstructAssets(assets->id, minecraftInstance->resourcesDir())) {
+    if (!AssetsUtils::reconstructAssets(assets->id, instance->resourcesDir())) {
        emit logLine("Failed to reconstruct Minecraft assets.", MessageLevel::Error);
    }

--- a/launcher/minecraft/launch/ScanModFolders.cpp
+++ b/launcher/minecraft/launch/ScanModFolders.cpp
@ -42,7 +42,7 @@

 void ScanModFolders::executeTask()
 {
-    auto m_inst = std::dynamic_pointer_cast<MinecraftInstance>(m_parent->instance());
+    auto m_inst = m_parent->instance();

    auto loaders = m_inst->loaderModList();
    connect(loaders.get(), &ModFolderModel::updateFinished, this, &ScanModFolders::modsDone);
--- a/launcher/minecraft/launch/VerifyJavaInstall.cpp
+++ b/launcher/minecraft/launch/VerifyJavaInstall.cpp
@ -46,7 +46,7 @@

 void VerifyJavaInstall::executeTask()
 {
-    auto instance = std::dynamic_pointer_cast<MinecraftInstance>(m_parent->instance());
+    auto instance = m_parent->instance();
    auto packProfile = instance->getPackProfile();
    auto settings = instance->settings();
    auto storedVersion = settings->get("JavaVersion").toString();
--- a/launcher/minecraft/mod/Mod.cpp
+++ b/launcher/minecraft/mod/Mod.cpp
@ -35,6 +35,7 @@
 */

 #include "Mod.h"
+#include <qpixmap.h>

 #include <QDir>
 #include <QRegularExpression>
@ -210,7 +211,7 @@ void Mod::finishResolvingWithDetails(ModDetails&& details)

    m_local_details = std::move(details);
    if (!iconPath().isEmpty()) {
-        m_pack_image_cache_key.was_read_attempt = false;
+        m_packImageCacheKey.wasReadAttempt = false;
    }
 }

@ -224,45 +225,53 @@ auto Mod::issueTracker() const -> QString
    return details().issue_tracker;
 }

-void Mod::setIcon(QImage new_image) const
+QPixmap Mod::setIcon(QImage new_image) const
 {
    QMutexLocker locker(&m_data_lock);

    Q_ASSERT(!new_image.isNull());

-    if (m_pack_image_cache_key.key.isValid())
-        PixmapCache::remove(m_pack_image_cache_key.key);
+    if (m_packImageCacheKey.key.isValid())
+        PixmapCache::remove(m_packImageCacheKey.key);

    // scale the image to avoid flooding the pixmapcache
    auto pixmap =
        QPixmap::fromImage(new_image.scaled({ 64, 64 }, Qt::AspectRatioMode::KeepAspectRatioByExpanding, Qt::SmoothTransformation));

-    m_pack_image_cache_key.key = PixmapCache::insert(pixmap);
-    m_pack_image_cache_key.was_ever_used = true;
-    m_pack_image_cache_key.was_read_attempt = true;
+    m_packImageCacheKey.key = PixmapCache::insert(pixmap);
+    m_packImageCacheKey.wasEverUsed = true;
+    m_packImageCacheKey.wasReadAttempt = true;
+    return pixmap;
 }

 QPixmap Mod::icon(QSize size, Qt::AspectRatioMode mode) const
 {
-    QPixmap cached_image;
-    if (PixmapCache::find(m_pack_image_cache_key.key, &cached_image)) {
+    auto pixmap_transform = [&size, &mode](QPixmap pixmap) {
        if (size.isNull())
-            return cached_image;
-        return cached_image.scaled(size, mode, Qt::SmoothTransformation);
+            return pixmap;
+        return pixmap.scaled(size, mode, Qt::SmoothTransformation);
+    };
+
+    QPixmap cached_image;
+    if (PixmapCache::find(m_packImageCacheKey.key, &cached_image)) {
+        return pixmap_transform(cached_image);
    }

    // No valid image we can get
-    if ((!m_pack_image_cache_key.was_ever_used && m_pack_image_cache_key.was_read_attempt) || iconPath().isEmpty())
+    if ((!m_packImageCacheKey.wasEverUsed && m_packImageCacheKey.wasReadAttempt) || iconPath().isEmpty())
        return {};

-    if (m_pack_image_cache_key.was_ever_used) {
+    if (m_packImageCacheKey.wasEverUsed) {
        qDebug() << "Mod" << name() << "Had it's icon evicted from the cache. reloading...";
        PixmapCache::markCacheMissByEviciton();
    }
    // Image got evicted from the cache or an attempt to load it has not been made. load it and retry.
-    m_pack_image_cache_key.was_read_attempt = true;
-    ModUtils::loadIconFile(*this);
-    return icon(size);
+    m_packImageCacheKey.wasReadAttempt = true;
+    if (ModUtils::loadIconFile(*this, &cached_image)) {
+        return pixmap_transform(cached_image);
+    }
+    // Image failed to load
+    return {};
 }

 bool Mod::valid() const
--- a/launcher/minecraft/mod/Mod.h
+++ b/launcher/minecraft/mod/Mod.h
@ -77,7 +77,7 @@ class Mod : public Resource {
    /** Gets the icon of the mod, converted to a QPixmap for drawing, and scaled to size. */
    [[nodiscard]] QPixmap icon(QSize size, Qt::AspectRatioMode mode = Qt::AspectRatioMode::IgnoreAspectRatio) const;
    /** Thread-safe. */
-    void setIcon(QImage new_image) const;
+    QPixmap setIcon(QImage new_image) const;

    void setDetails(const ModDetails& details);

@ -100,7 +100,7 @@ class Mod : public Resource {

    struct {
        QPixmapCache::Key key;
-        bool was_ever_used = false;
-        bool was_read_attempt = false;
-    } mutable m_pack_image_cache_key;
+        bool wasEverUsed = false;
+        bool wasReadAttempt = false;
+    } mutable m_packImageCacheKey;
 };
--- a/launcher/minecraft/mod/ResourceFolderModel.cpp
+++ b/launcher/minecraft/mod/ResourceFolderModel.cpp
@ -40,10 +40,9 @@ ResourceFolderModel::ResourceFolderModel(const QDir& dir, BaseInstance* instance

    connect(&m_watcher, &QFileSystemWatcher::directoryChanged, this, &ResourceFolderModel::directoryChanged);
    connect(&m_helper_thread_task, &ConcurrentTask::finished, this, [this] { m_helper_thread_task.clear(); });
-#ifndef LAUNCHER_TEST
-    // in tests the application macro doesn't work
+    if (APPLICATION_DYN) {  // in tests the application macro doesn't work
        m_helper_thread_task.setMaxConcurrent(APPLICATION->settings()->get("NumberOfConcurrentTasks").toInt());
-#endif
+    }
 }

 ResourceFolderModel::~ResourceFolderModel()
--- a/launcher/minecraft/mod/tasks/BasicFolderLoadTask.h
+++ b/launcher/minecraft/mod/tasks/BasicFolderLoadTask.h
@ -0,0 +1,85 @@
+#pragma once
+
+#include <QDir>
+#include <QMap>
+#include <QObject>
+#include <QThread>
+
+#include <memory>
+
+#include "Application.h"
+#include "FileSystem.h"
+#include "minecraft/mod/Resource.h"
+
+#include "tasks/Task.h"
+
+/** Very simple task that just loads a folder's contents directly.
+ */
+class BasicFolderLoadTask : public Task {
+    Q_OBJECT
+   public:
+    struct Result {
+        QMap<QString, Resource::Ptr> resources;
+    };
+    using ResultPtr = std::shared_ptr<Result>;
+
+    [[nodiscard]] ResultPtr result() const { return m_result; }
+
+   public:
+    BasicFolderLoadTask(QDir dir) : Task(nullptr, false), m_dir(dir), m_result(new Result), m_thread_to_spawn_into(thread())
+    {
+        m_create_func = [](QFileInfo const& entry) -> Resource::Ptr { return makeShared<Resource>(entry); };
+    }
+    BasicFolderLoadTask(QDir dir, std::function<Resource::Ptr(QFileInfo const&)> create_function)
+        : Task(nullptr, false)
+        , m_dir(dir)
+        , m_result(new Result)
+        , m_create_func(std::move(create_function))
+        , m_thread_to_spawn_into(thread())
+    {}
+
+    [[nodiscard]] bool canAbort() const override { return true; }
+    bool abort() override
+    {
+        m_aborted.store(true);
+        return true;
+    }
+
+    void executeTask() override
+    {
+        if (thread() != m_thread_to_spawn_into)
+            connect(this, &Task::finished, this->thread(), &QThread::quit);
+
+        m_dir.refresh();
+        for (auto entry : m_dir.entryInfoList()) {
+            auto filePath = entry.absoluteFilePath();
+            if (auto app = APPLICATION_DYN; app && app->checkQSavePath(filePath)) {
+                continue;
+            }
+            auto newFilePath = FS::getUniqueResourceName(filePath);
+            if (newFilePath != filePath) {
+                FS::move(filePath, newFilePath);
+                entry = QFileInfo(newFilePath);
+            }
+            auto resource = m_create_func(entry);
+            resource->moveToThread(m_thread_to_spawn_into);
+            m_result->resources.insert(resource->internal_id(), resource);
+        }
+
+        if (m_aborted)
+            emit finished();
+        else
+            emitSucceeded();
+    }
+
+   private:
+    QDir m_dir;
+    ResultPtr m_result;
+
+    std::atomic<bool> m_aborted = false;
+
+    std::function<Resource::Ptr(QFileInfo const&)> m_create_func;
+
+    /** This is the thread in which we should put new mod objects */
+    QThread* m_thread_to_spawn_into;
+};
--- a/launcher/minecraft/mod/tasks/LocalModParseTask.cpp
+++ b/launcher/minecraft/mod/tasks/LocalModParseTask.cpp
@ -647,11 +647,11 @@ bool validate(QFileInfo file)
    return ModUtils::process(mod, ProcessingLevel::BasicInfoOnly) && mod.valid();
 }

-bool processIconPNG(const Mod& mod, QByteArray&& raw_data)
+bool processIconPNG(const Mod& mod, QByteArray&& raw_data, QPixmap* pixmap)
 {
    auto img = QImage::fromData(raw_data);
    if (!img.isNull()) {
-        mod.setIcon(img);
+        *pixmap = mod.setIcon(img);
    } else {
        qWarning() << "Failed to parse mod logo:" << mod.iconPath() << "from" << mod.name();
        return false;
@ -659,15 +659,15 @@ bool processIconPNG(const Mod& mod, QByteArray&& raw_data)
    return true;
 }

-bool loadIconFile(const Mod& mod)
+bool loadIconFile(const Mod& mod, QPixmap* pixmap)
 {
    if (mod.iconPath().isEmpty()) {
        qWarning() << "No Iconfile set, be sure to parse the mod first";
        return false;
    }

-    auto png_invalid = [&mod]() {
-        qWarning() << "Mod at" << mod.fileinfo().filePath() << "does not have a valid icon";
+    auto png_invalid = [&mod](const QString& reason) {
+        qWarning() << "Mod at" << mod.fileinfo().filePath() << "does not have a valid icon:" << reason;
        return false;
    };

@ -676,24 +676,26 @@ bool loadIconFile(const Mod& mod)
            QFileInfo icon_info(FS::PathCombine(mod.fileinfo().filePath(), mod.iconPath()));
            if (icon_info.exists() && icon_info.isFile()) {
                QFile icon(icon_info.filePath());
-                if (!icon.open(QIODevice::ReadOnly))
-                    return false;
+                if (!icon.open(QIODevice::ReadOnly)) {
+                    return png_invalid("failed  to open file " + icon_info.filePath());
+                }
                auto data = icon.readAll();

-                bool icon_result = ModUtils::processIconPNG(mod, std::move(data));
+                bool icon_result = ModUtils::processIconPNG(mod, std::move(data), pixmap);

                icon.close();

                if (!icon_result) {
-                    return png_invalid();  // icon invalid
+                    return png_invalid("invalid png image");  // icon invalid
                }
+                return true;
            }
-            return false;
+            return png_invalid("file '" + icon_info.filePath() + "' does not exists or is not a file");
        }
        case ResourceType::ZIPFILE: {
            QuaZip zip(mod.fileinfo().filePath());
            if (!zip.open(QuaZip::mdUnzip))
-                return false;
+                return png_invalid("failed to open '" + mod.fileinfo().filePath() + "' as a zip archive");

            QuaZipFile file(&zip);

@ -701,28 +703,27 @@ bool loadIconFile(const Mod& mod)
                if (!file.open(QIODevice::ReadOnly)) {
                    qCritical() << "Failed to open file in zip.";
                    zip.close();
-                    return png_invalid();
+                    return png_invalid("Failed to open '" + mod.iconPath() + "' in zip archive");
                }

                auto data = file.readAll();

-                bool icon_result = ModUtils::processIconPNG(mod, std::move(data));
+                bool icon_result = ModUtils::processIconPNG(mod, std::move(data), pixmap);

                file.close();
                if (!icon_result) {
-                    return png_invalid();  // icon png invalid
+                    return png_invalid("invalid png image");  // icon png invalid
                }
-            } else {
-                return png_invalid();  // could not set icon as current file.
+                return true;
            }
-            return false;
+            return png_invalid("Failed to set '" + mod.iconPath() +
+                               "' as current file in zip archive");  // could not set icon as current file.
        }
        case ResourceType::LITEMOD: {
-            return false;  // can lightmods even have icons?
+            return png_invalid("litemods do not have icons");  // can lightmods even have icons?
        }
        default:
-            qWarning() << "Invalid type for mod, can not load icon.";
-            return false;
+            return png_invalid("Invalid type for mod, can not load icon.");
    }
 }

--- a/launcher/minecraft/mod/tasks/LocalModParseTask.h
+++ b/launcher/minecraft/mod/tasks/LocalModParseTask.h
@ -26,8 +26,8 @@ bool processLitemod(Mod& mod, ProcessingLevel level = ProcessingLevel::Full);
 /** Checks whether a file is valid as a mod or not. */
 bool validate(QFileInfo file);

-bool processIconPNG(const Mod& mod, QByteArray&& raw_data);
-bool loadIconFile(const Mod& mod);
+bool processIconPNG(const Mod& mod, QByteArray&& raw_data, QPixmap* pixmap);
+bool loadIconFile(const Mod& mod, QPixmap* pixmap);
 }  // namespace ModUtils

 class LocalModParseTask : public Task {
--- a/launcher/minecraft/mod/tasks/ResourceFolderLoadTask.cpp
+++ b/launcher/minecraft/mod/tasks/ResourceFolderLoadTask.cpp
@ -36,6 +36,7 @@

 #include "ResourceFolderLoadTask.h"

+#include "Application.h"
 #include "FileSystem.h"
 #include "minecraft/mod/MetadataHandler.h"

@ -70,6 +71,9 @@ void ResourceFolderLoadTask::executeTask()
    m_resource_dir.refresh();
    for (auto entry : m_resource_dir.entryInfoList()) {
        auto filePath = entry.absoluteFilePath();
+        if (auto app = APPLICATION_DYN; app && app->checkQSavePath(filePath)) {
+            continue;
+        }
        auto newFilePath = FS::getUniqueResourceName(filePath);
        if (newFilePath != filePath) {
            FS::move(filePath, newFilePath);
--- a/launcher/modplatform/ModIndex.h
+++ b/launcher/modplatform/ModIndex.h
@ -36,7 +36,7 @@ Q_DECLARE_FLAGS(ModLoaderTypes, ModLoaderType)

 enum class ResourceProvider { MODRINTH, FLAME };

-enum class ResourceType { MOD, RESOURCE_PACK, SHADER_PACK };
+enum class ResourceType { MOD, RESOURCE_PACK, SHADER_PACK, MODPACK };

 enum class DependencyType { REQUIRED, OPTIONAL, INCOMPATIBLE, EMBEDDED, TOOL, INCLUDE, UNKNOWN };

--- a/launcher/modplatform/flame/FlameAPI.cpp
+++ b/launcher/modplatform/flame/FlameAPI.cpp
@ -221,14 +221,20 @@ QList<ResourceAPI::SortingMethod> FlameAPI::getSortingMethods() const
             { 8, "GameVersion", QObject::tr("Sort by Game Version") } };
 }

-Task::Ptr FlameAPI::getModCategories(std::shared_ptr<QByteArray> response)
+Task::Ptr FlameAPI::getCategories(std::shared_ptr<QByteArray> response, ModPlatform::ResourceType type)
 {
    auto netJob = makeShared<NetJob>(QString("Flame::GetCategories"), APPLICATION->network());
-    netJob->addNetAction(Net::ApiDownload::makeByteArray(QUrl("https://api.curseforge.com/v1/categories?gameId=432&classId=6"), response));
+    netJob->addNetAction(Net::ApiDownload::makeByteArray(
+        QUrl(QString("https://api.curseforge.com/v1/categories?gameId=432&classId=%1").arg(getClassId(type))), response));
    QObject::connect(netJob.get(), &Task::failed, [](QString msg) { qDebug() << "Flame failed to get categories:" << msg; });
    return netJob;
 }

+Task::Ptr FlameAPI::getModCategories(std::shared_ptr<QByteArray> response)
+{
+    return getCategories(response, ModPlatform::ResourceType::MOD);
+}
+
 QList<ModPlatform::Category> FlameAPI::loadModCategories(std::shared_ptr<QByteArray> response)
 {
    QList<ModPlatform::Category> categories;
--- a/launcher/modplatform/flame/FlameAPI.h
+++ b/launcher/modplatform/flame/FlameAPI.h
@ -25,6 +25,7 @@ class FlameAPI : public NetworkResourceAPI {
    Task::Ptr getFiles(const QStringList& fileIds, std::shared_ptr<QByteArray> response) const;
    Task::Ptr getFile(const QString& addonId, const QString& fileId, std::shared_ptr<QByteArray> response) const;

+    static Task::Ptr getCategories(std::shared_ptr<QByteArray> response, ModPlatform::ResourceType type);
    static Task::Ptr getModCategories(std::shared_ptr<QByteArray> response);
    static QList<ModPlatform::Category> loadModCategories(std::shared_ptr<QByteArray> response);

@ -46,6 +47,8 @@ class FlameAPI : public NetworkResourceAPI {
                return 12;
            case ModPlatform::ResourceType::SHADER_PACK:
                return 6552;
+            case ModPlatform::ResourceType::MODPACK:
+                return 4471;
        }
    }

@ -82,12 +85,9 @@ class FlameAPI : public NetworkResourceAPI {

    static const QString getModLoaderFilters(ModPlatform::ModLoaderTypes types) { return "[" + getModLoaderStrings(types).join(',') + "]"; }

-   private:
+   public:
    [[nodiscard]] std::optional<QString> getSearchURL(SearchArgs const& args) const override
    {
-        auto gameVersionStr =
-            args.versions.has_value() ? QString("gameVersion=%1").arg(args.versions.value().front().toString()) : QString();
-
        QStringList get_arguments;
        get_arguments.append(QString("classId=%1").arg(getClassId(args.type)));
        get_arguments.append(QString("index=%1").arg(args.offset));
@ -97,20 +97,22 @@ class FlameAPI : public NetworkResourceAPI {
        if (args.sorting.has_value())
            get_arguments.append(QString("sortField=%1").arg(args.sorting.value().index));
        get_arguments.append("sortOrder=desc");
-        if (args.loaders.has_value())
+        if (args.loaders.has_value() && args.loaders.value() != 0)
            get_arguments.append(QString("modLoaderTypes=%1").arg(getModLoaderFilters(args.loaders.value())));
        if (args.categoryIds.has_value() && !args.categoryIds->empty())
            get_arguments.append(QString("categoryIds=[%1]").arg(args.categoryIds->join(",")));

-        get_arguments.append(gameVersionStr);
+        if (args.versions.has_value() && !args.versions.value().empty())
+            get_arguments.append(QString("gameVersion=%1").arg(args.versions.value().front().toString()));

        return "https://api.curseforge.com/v1/mods/search?gameId=432&" + get_arguments.join('&');
-    };
+    }

+   private:
    [[nodiscard]] std::optional<QString> getInfoURL(QString const& id) const override
    {
        return QString("https://api.curseforge.com/v1/mods/%1").arg(id);
-    };
+    }

    [[nodiscard]] std::optional<QString> getVersionsURL(VersionSearchArgs const& args) const override
    {
@ -125,7 +127,7 @@ class FlameAPI : public NetworkResourceAPI {
            url += QString("&modLoaderType=%1").arg(mappedModLoader);
        }
        return url;
-    };
+    }

    [[nodiscard]] std::optional<QString> getDependencyURL(DependencySearchArgs const& args) const override
    {
@ -137,5 +139,5 @@ class FlameAPI : public NetworkResourceAPI {
            url += QString("&modLoaderType=%1").arg(mappedModLoader);
        }
        return url;
-    };
+    }
 };
--- a/launcher/modplatform/flame/FlamePackIndex.cpp
+++ b/launcher/modplatform/flame/FlamePackIndex.cpp
@ -3,6 +3,7 @@
 #include <QUrl>

 #include "Json.h"
+#include "modplatform/ModIndex.h"

 void Flame::loadIndexedPack(Flame::IndexedPack& pack, QJsonObject& obj)
 {
@ -88,8 +89,27 @@ void Flame::loadIndexedPackVersions(Flame::IndexedPack& pack, QJsonArray& arr)
            continue;
        }

+        for (auto mcVer : versionArray) {
+            auto str = mcVer.toString();
+
+            if (str.contains('.'))
+                file.mcVersion.append(str);
+
+            if (auto loader = str.toLower(); loader == "neoforge")
+                file.loaders |= ModPlatform::NeoForge;
+            else if (loader == "forge")
+                file.loaders |= ModPlatform::Forge;
+            else if (loader == "cauldron")
+                file.loaders |= ModPlatform::Cauldron;
+            else if (loader == "liteloader")
+                file.loaders |= ModPlatform::LiteLoader;
+            else if (loader == "fabric")
+                file.loaders |= ModPlatform::Fabric;
+            else if (loader == "quilt")
+                file.loaders |= ModPlatform::Quilt;
+        }
+
        // pick the latest version supported
-        file.mcVersion = versionArray[0].toString();
        file.version = Json::requireString(version, "displayName");

        ModPlatform::IndexedVersionType::VersionType ver_type;
--- a/launcher/modplatform/flame/FlamePackIndex.h
+++ b/launcher/modplatform/flame/FlamePackIndex.h
@ -18,6 +18,7 @@ struct IndexedVersion {
    int fileId;
    QString version;
    ModPlatform::IndexedVersionType version_type;
+    ModPlatform::ModLoaderTypes loaders = {};
    QString mcVersion;
    QString downloadUrl;
 };
--- a/launcher/modplatform/modrinth/ModrinthAPI.cpp
+++ b/launcher/modplatform/modrinth/ModrinthAPI.cpp
@ -129,7 +129,7 @@ Task::Ptr ModrinthAPI::getModCategories(std::shared_ptr<QByteArray> response)
    return netJob;
 }

-QList<ModPlatform::Category> ModrinthAPI::loadModCategories(std::shared_ptr<QByteArray> response)
+QList<ModPlatform::Category> ModrinthAPI::loadCategories(std::shared_ptr<QByteArray> response, QString projectType)
 {
    QList<ModPlatform::Category> categories;
    QJsonParseError parse_error{};
@ -147,7 +147,7 @@ QList<ModPlatform::Category> ModrinthAPI::loadModCategories(std::shared_ptr<QByt
        for (auto val : arr) {
            auto cat = Json::requireObject(val);
            auto name = Json::requireString(cat, "name");
-            if (Json::ensureString(cat, "project_type", "") == "mod")
+            if (Json::ensureString(cat, "project_type", "") == projectType)
                categories.push_back({ name, name });
        }

@ -157,4 +157,9 @@ QList<ModPlatform::Category> ModrinthAPI::loadModCategories(std::shared_ptr<QByt
        qDebug() << doc;
    }
    return categories;
+}
+
+QList<ModPlatform::Category> ModrinthAPI::loadModCategories(std::shared_ptr<QByteArray> response)
+{
+    return loadCategories(response, "mod");
 };
--- a/launcher/modplatform/modrinth/ModrinthAPI.h
+++ b/launcher/modplatform/modrinth/ModrinthAPI.h
@ -31,6 +31,7 @@ class ModrinthAPI : public NetworkResourceAPI {
    Task::Ptr getProjects(QStringList addonIds, std::shared_ptr<QByteArray> response) const override;

    static Task::Ptr getModCategories(std::shared_ptr<QByteArray> response);
+    static QList<ModPlatform::Category> loadCategories(std::shared_ptr<QByteArray> response, QString projectType);
    static QList<ModPlatform::Category> loadModCategories(std::shared_ptr<QByteArray> response);

   public:
@ -90,6 +91,8 @@ class ModrinthAPI : public NetworkResourceAPI {
                return "resourcepack";
            case ModPlatform::ResourceType::SHADER_PACK:
                return "shader";
+            case ModPlatform::ResourceType::MODPACK:
+                return "modpack";
            default:
                qWarning() << "Invalid resource type for Modrinth API!";
                break;
@ -102,9 +105,9 @@ class ModrinthAPI : public NetworkResourceAPI {
    {
        QStringList facets_list;

-        if (args.loaders.has_value())
+        if (args.loaders.has_value() && args.loaders.value() != 0)
            facets_list.append(QString("[%1]").arg(getModLoaderFilters(args.loaders.value())));
-        if (args.versions.has_value())
+        if (args.versions.has_value() && !args.versions.value().empty())
            facets_list.append(QString("[%1]").arg(getGameVersionsArray(args.versions.value())));
        if (args.side.has_value()) {
            auto side = getSideFilters(args.side.value());
@ -122,7 +125,7 @@ class ModrinthAPI : public NetworkResourceAPI {
   public:
    [[nodiscard]] inline auto getSearchURL(SearchArgs const& args) const -> std::optional<QString> override
    {
-        if (args.loaders.has_value()) {
+        if (args.loaders.has_value() && args.loaders.value() != 0) {
            if (!validateModLoaders(args.loaders.value())) {
                qWarning() << "Modrinth - or our interface - does not support any the provided mod loaders!";
                return {};
@ -163,7 +166,7 @@ class ModrinthAPI : public NetworkResourceAPI {
            .arg(BuildConfig.MODRINTH_PROD_URL, args.pack.addonId.toString(), get_arguments.isEmpty() ? "" : "?", get_arguments.join('&'));
    };

-    auto getGameVersionsArray(std::list<Version> mcVersions) const -> QString
+    QString getGameVersionsArray(std::list<Version> mcVersions) const
    {
        QString s;
        for (auto& ver : mcVersions) {
--- a/launcher/modplatform/modrinth/ModrinthInstanceCreationTask.cpp
+++ b/launcher/modplatform/modrinth/ModrinthInstanceCreationTask.cpp
@ -136,7 +136,7 @@ bool ModrinthCreationTask::updateInstance()
        }

        auto old_client_overrides = Override::readOverrides("client-overrides", old_index_folder);
-        for (const auto& entry : old_overrides) {
+        for (const auto& entry : old_client_overrides) {
            if (entry.isEmpty())
                continue;
            qDebug() << "Scheduling" << entry << "for removal";
@ -302,6 +302,13 @@ bool ModrinthCreationTask::createInstance()

    loop.exec();

+    if (!ended_well) {
+        for (auto m : mods) {
+            delete m;
+        }
+        return ended_well;
+    }
+
    QEventLoop ensureMetaLoop;
    QDir folder = FS::PathCombine(instance.modsRoot(), ".index");
    auto ensureMetadataTask = makeShared<EnsureMetadataTask>(resources, folder, ModPlatform::ResourceProvider::MODRINTH);
--- a/launcher/modplatform/modrinth/ModrinthPackManifest.cpp
+++ b/launcher/modplatform/modrinth/ModrinthPackManifest.cpp
@ -135,6 +135,21 @@ auto loadIndexedVersion(QJsonObject& obj) -> ModpackVersion
    if (!gameVersions.isEmpty()) {
        file.gameVersion = Json::ensureString(gameVersions[0]);
    }
+    auto loaders = Json::requireArray(obj, "loaders");
+    for (auto loader : loaders) {
+        if (loader == "neoforge")
+            file.loaders |= ModPlatform::NeoForge;
+        else if (loader == "forge")
+            file.loaders |= ModPlatform::Forge;
+        else if (loader == "cauldron")
+            file.loaders |= ModPlatform::Cauldron;
+        else if (loader == "liteloader")
+            file.loaders |= ModPlatform::LiteLoader;
+        else if (loader == "fabric")
+            file.loaders |= ModPlatform::Fabric;
+        else if (loader == "quilt")
+            file.loaders |= ModPlatform::Quilt;
+    }
    file.version_type = ModPlatform::IndexedVersionType(Json::requireString(obj, "version_type"));
    file.changelog = Json::ensureString(obj, "changelog");

--- a/launcher/modplatform/modrinth/ModrinthPackManifest.h
+++ b/launcher/modplatform/modrinth/ModrinthPackManifest.h
@ -87,6 +87,7 @@ struct ModpackVersion {
    QString gameVersion;
    ModPlatform::IndexedVersionType version_type;
    QString changelog;
+    ModPlatform::ModLoaderTypes loaders = {};

    QString id;
    QString project_id;
--- a/launcher/modplatform/packwiz/Packwiz.cpp
+++ b/launcher/modplatform/packwiz/Packwiz.cpp
@ -72,7 +72,7 @@ auto stringEntry(toml::table table, QString entry_name) -> QString
 {
    auto node = table[StringUtils::toStdString(entry_name)];
    if (!node) {
-        qCritical() << "Failed to read str property '" + entry_name + "' in mod metadata.";
+        qWarning() << "Failed to read str property '" + entry_name + "' in mod metadata.";
        return {};
    }

@ -83,7 +83,7 @@ auto intEntry(toml::table table, QString entry_name) -> int
 {
    auto node = table[StringUtils::toStdString(entry_name)];
    if (!node) {
-        qCritical() << "Failed to read int property '" + entry_name + "' in mod metadata.";
+        qWarning() << "Failed to read int property '" + entry_name + "' in mod metadata.";
        return {};
    }

--- a/launcher/net/FileSink.cpp
+++ b/launcher/net/FileSink.cpp
@ -55,7 +55,7 @@ Task::State FileSink::init(QNetworkRequest& request)
    }

    wroteAnyData = false;
-    m_output_file.reset(new QSaveFile(m_filename));
+    m_output_file.reset(new PSaveFile(m_filename));
    if (!m_output_file->open(QIODevice::WriteOnly)) {
        qCCritical(taskNetLogC) << "Could not open " + m_filename + " for writing";
        return Task::State::Failed;
--- a/launcher/net/FileSink.h
+++ b/launcher/net/FileSink.h
@ -35,8 +35,7 @@

 #pragma once

-#include <QSaveFile>
-
+#include "PSaveFile.h"
 #include "Sink.h"

 namespace Net {
@ -60,6 +59,6 @@ class FileSink : public Sink {
   protected:
    QString m_filename;
    bool wroteAnyData = false;
-    std::unique_ptr<QSaveFile> m_output_file;
+    std::unique_ptr<PSaveFile> m_output_file;
 };
 }  // namespace Net
--- a/launcher/net/NetJob.cpp
+++ b/launcher/net/NetJob.cpp
@ -48,7 +48,7 @@ NetJob::NetJob(QString job_name, shared_qobject_ptr<QNetworkAccessManager> netwo
    : ConcurrentTask(nullptr, job_name), m_network(network)
 {
 #if defined(LAUNCHER_APPLICATION)
-    if (max_concurrent < 0)
+    if (APPLICATION_DYN && max_concurrent < 0)
        max_concurrent = APPLICATION->settings()->get("NumberOfConcurrentDownloads").toInt();
 #endif
    if (max_concurrent > 0)
@ -161,7 +161,8 @@ bool NetJob::isOnline()
 void NetJob::emitFailed(QString reason)
 {
 #if defined(LAUNCHER_APPLICATION)
-    if (m_ask_retry && m_manual_try < APPLICATION->settings()->get("NumberOfManualRetries").toInt() && isOnline()) {
+
+    if (APPLICATION_DYN && m_ask_retry && m_manual_try < APPLICATION->settings()->get("NumberOfManualRetries").toInt() && isOnline()) {
        m_manual_try++;
        auto response = CustomMessageBox::selectable(nullptr, "Confirm retry",
                                                     "The tasks failed.\n"
--- a/launcher/settings/INIFile.cpp
+++ b/launcher/settings/INIFile.cpp
@ -39,7 +39,6 @@

 #include <QDebug>
 #include <QFile>
-#include <QSaveFile>
 #include <QStringList>
 #include <QTemporaryFile>
 #include <QTextStream>
--- a/launcher/ui/dialogs/ExportInstanceDialog.cpp
+++ b/launcher/ui/dialogs/ExportInstanceDialog.cpp
@ -51,7 +51,6 @@
 #include <icons/IconList.h>
 #include <QDebug>
 #include <QFileInfo>
-#include <QSaveFile>
 #include <QSortFilterProxyModel>
 #include <QStack>
 #include <functional>
--- a/launcher/ui/dialogs/MSALoginDialog.cpp
+++ b/launcher/ui/dialogs/MSALoginDialog.cpp
@ -78,7 +78,7 @@ int MSALoginDialog::exec()
    connect(m_authflow_task.get(), &Task::failed, this, &MSALoginDialog::onTaskFailed);
    connect(m_authflow_task.get(), &Task::succeeded, this, &QDialog::accept);
    connect(m_authflow_task.get(), &Task::aborted, this, &MSALoginDialog::reject);
-    connect(m_authflow_task.get(), &Task::status, this, &MSALoginDialog::onTaskStatus);
+    connect(m_authflow_task.get(), &Task::status, this, &MSALoginDialog::onAuthFlowStatus);
    connect(m_authflow_task.get(), &AuthFlow::authorizeWithBrowser, this, &MSALoginDialog::authorizeWithBrowser);
    connect(m_authflow_task.get(), &AuthFlow::authorizeWithBrowserWithExtra, this, &MSALoginDialog::authorizeWithBrowserWithExtra);
    connect(ui->buttonBox->button(QDialogButtonBox::Cancel), &QPushButton::clicked, m_authflow_task.get(), &Task::abort);
@ -87,7 +87,7 @@ int MSALoginDialog::exec()
    connect(m_devicecode_task.get(), &Task::failed, this, &MSALoginDialog::onTaskFailed);
    connect(m_devicecode_task.get(), &Task::succeeded, this, &QDialog::accept);
    connect(m_devicecode_task.get(), &Task::aborted, this, &MSALoginDialog::reject);
-    connect(m_devicecode_task.get(), &Task::status, this, &MSALoginDialog::onTaskStatus);
+    connect(m_devicecode_task.get(), &Task::status, this, &MSALoginDialog::onDeviceFlowStatus);
    connect(m_devicecode_task.get(), &AuthFlow::authorizeWithBrowser, this, &MSALoginDialog::authorizeWithBrowser);
    connect(m_devicecode_task.get(), &AuthFlow::authorizeWithBrowserWithExtra, this, &MSALoginDialog::authorizeWithBrowserWithExtra);
    connect(ui->buttonBox->button(QDialogButtonBox::Cancel), &QPushButton::clicked, m_devicecode_task.get(), &Task::abort);
@ -132,7 +132,7 @@ void MSALoginDialog::onTaskFailed(QString reason)

 void MSALoginDialog::authorizeWithBrowser(const QUrl& url)
 {
-    ui->stackedWidget->setCurrentIndex(1);
+    ui->stackedWidget2->setCurrentIndex(1);
    ui->loginButton->setToolTip(QString("<div style='width: 200px;'>%1</div>").arg(url.toString()));
    m_url = url;
 }
@ -152,12 +152,18 @@ void MSALoginDialog::authorizeWithBrowserWithExtra(QString url, QString code, in
    }
 }

-void MSALoginDialog::onTaskStatus(QString status)
+void MSALoginDialog::onDeviceFlowStatus(QString status)
 {
    ui->stackedWidget->setCurrentIndex(0);
    ui->status->setText(status);
 }

+void MSALoginDialog::onAuthFlowStatus(QString status)
+{
+    ui->stackedWidget2->setCurrentIndex(0);
+    ui->status2->setText(status);
+}
+
 // Public interface
 MinecraftAccountPtr MSALoginDialog::newAccount(QWidget* parent)
 {
--- a/launcher/ui/dialogs/MSALoginDialog.h
+++ b/launcher/ui/dialogs/MSALoginDialog.h
@ -40,7 +40,8 @@ class MSALoginDialog : public QDialog {

   protected slots:
    void onTaskFailed(QString reason);
-    void onTaskStatus(QString status);
+    void onDeviceFlowStatus(QString status);
+    void onAuthFlowStatus(QString status);
    void authorizeWithBrowser(const QUrl& url);
    void authorizeWithBrowserWithExtra(QString url, QString code, int expiresIn);

--- a/launcher/ui/dialogs/MSALoginDialog.ui
+++ b/launcher/ui/dialogs/MSALoginDialog.ui
@ -7,7 +7,7 @@
    <x>0</x>
    <y>0</y>
    <width>440</width>
-    <height>430</height>
+    <height>447</height>
   </rect>
  </property>
  <property name="minimumSize">
@ -20,6 +20,171 @@
   <string>Add Microsoft Account</string>
  </property>
  <layout class="QVBoxLayout" name="verticalLayout_6">
+   <item>
+    <widget class="QStackedWidget" name="stackedWidget2">
+     <property name="currentIndex">
+      <number>1</number>
+     </property>
+     <widget class="QWidget" name="loadingPage2">
+      <layout class="QVBoxLayout" name="verticalLayout_31">
+       <item>
+        <spacer name="verticalSpacer_4">
+         <property name="orientation">
+          <enum>Qt::Vertical</enum>
+         </property>
+         <property name="sizeHint" stdset="0">
+          <size>
+           <width>20</width>
+           <height>40</height>
+          </size>
+         </property>
+        </spacer>
+       </item>
+       <item>
+        <widget class="QLabel" name="loadingLabel2">
+         <property name="font">
+          <font>
+           <pointsize>16</pointsize>
+           <weight>75</weight>
+           <bold>true</bold>
+          </font>
+         </property>
+         <property name="text">
+          <string>Please wait...</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+         <property name="wordWrap">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QLabel" name="status2">
+         <property name="text">
+          <string>Status</string>
+         </property>
+         <property name="alignment">
+          <set>Qt::AlignCenter</set>
+         </property>
+         <property name="wordWrap">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <spacer name="verticalSpacer_31">
+         <property name="orientation">
+          <enum>Qt::Vertical</enum>
+         </property>
+         <property name="sizeHint" stdset="0">
+          <size>
+           <width>20</width>
+           <height>40</height>
+          </size>
+         </property>
+        </spacer>
+       </item>
+      </layout>
+     </widget>
+     <widget class="QWidget" name="mpPage1">
+      <layout class="QVBoxLayout" name="verticalLayout_21" stretch="0">
+       <item>
+        <layout class="QHBoxLayout" name="horizontalLayout_7">
+         <item>
+          <spacer name="horizontalSpacer_5">
+           <property name="orientation">
+            <enum>Qt::Horizontal</enum>
+           </property>
+           <property name="sizeHint" stdset="0">
+            <size>
+             <width>40</width>
+             <height>20</height>
+            </size>
+           </property>
+          </spacer>
+         </item>
+         <item>
+          <widget class="QPushButton" name="loginButton">
+           <property name="minimumSize">
+            <size>
+             <width>250</width>
+             <height>40</height>
+            </size>
+           </property>
+           <property name="text">
+            <string>Sign in with Microsoft</string>
+           </property>
+           <property name="default">
+            <bool>true</bool>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <spacer name="horizontalSpacer_6">
+           <property name="orientation">
+            <enum>Qt::Horizontal</enum>
+           </property>
+           <property name="sizeHint" stdset="0">
+            <size>
+             <width>40</width>
+             <height>20</height>
+            </size>
+           </property>
+          </spacer>
+         </item>
+        </layout>
+       </item>
+      </layout>
+     </widget>
+    </widget>
+   </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout_5">
+     <item>
+      <widget class="Line" name="line_3">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="orientation">
+        <enum>Qt::Horizontal</enum>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QLabel" name="orLabel">
+       <property name="font">
+        <font>
+         <pointsize>16</pointsize>
+        </font>
+       </property>
+       <property name="text">
+        <string>Or</string>
+       </property>
+       <property name="alignment">
+        <set>Qt::AlignCenter</set>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="Line" name="line_4">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="orientation">
+        <enum>Qt::Horizontal</enum>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
   <item>
    <widget class="QStackedWidget" name="stackedWidget">
     <property name="currentIndex">
@ -28,7 +193,7 @@
     <widget class="QWidget" name="loadingPage">
      <layout class="QVBoxLayout" name="verticalLayout_3">
       <item>
-        <spacer name="verticalSpacer_4">
+        <spacer name="verticalSpacer_41">
         <property name="orientation">
          <enum>Qt::Vertical</enum>
         </property>
@ -89,98 +254,7 @@
      </layout>
     </widget>
     <widget class="QWidget" name="mpPage">
-      <layout class="QVBoxLayout" name="verticalLayout_2" stretch="0,0,0,0,0">
-       <item>
-        <layout class="QHBoxLayout" name="horizontalLayout_7">
-         <item>
-          <spacer name="horizontalSpacer_5">
-           <property name="orientation">
-            <enum>Qt::Horizontal</enum>
-           </property>
-           <property name="sizeHint" stdset="0">
-            <size>
-             <width>40</width>
-             <height>20</height>
-            </size>
-           </property>
-          </spacer>
-         </item>
-         <item>
-          <widget class="QPushButton" name="loginButton">
-           <property name="minimumSize">
-            <size>
-             <width>250</width>
-             <height>40</height>
-            </size>
-           </property>
-           <property name="text">
-            <string>Sign in with Microsoft</string>
-           </property>
-           <property name="default">
-            <bool>true</bool>
-           </property>
-          </widget>
-         </item>
-         <item>
-          <spacer name="horizontalSpacer_6">
-           <property name="orientation">
-            <enum>Qt::Horizontal</enum>
-           </property>
-           <property name="sizeHint" stdset="0">
-            <size>
-             <width>40</width>
-             <height>20</height>
-            </size>
-           </property>
-          </spacer>
-         </item>
-        </layout>
-       </item>
-       <item>
-        <layout class="QHBoxLayout" name="horizontalLayout_5">
-         <item>
-          <widget class="Line" name="line_3">
-           <property name="sizePolicy">
-            <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
-             <horstretch>0</horstretch>
-             <verstretch>0</verstretch>
-            </sizepolicy>
-           </property>
-           <property name="orientation">
-            <enum>Qt::Horizontal</enum>
-           </property>
-          </widget>
-         </item>
-         <item>
-          <widget class="QLabel" name="orLabel">
-           <property name="font">
-            <font>
-             <pointsize>16</pointsize>
-            </font>
-           </property>
-           <property name="text">
-            <string>Or</string>
-           </property>
-           <property name="alignment">
-            <set>Qt::AlignCenter</set>
-           </property>
-          </widget>
-         </item>
-         <item>
-          <widget class="Line" name="line_4">
-           <property name="sizePolicy">
-            <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
-             <horstretch>0</horstretch>
-             <verstretch>0</verstretch>
-            </sizepolicy>
-           </property>
-           <property name="orientation">
-            <enum>Qt::Horizontal</enum>
-           </property>
-          </widget>
-         </item>
-        </layout>
-       </item>
+      <layout class="QVBoxLayout" name="verticalLayout_2" stretch="0,0,0">
       <item>
        <layout class="QHBoxLayout" name="horizontalLayout">
         <item>
--- a/launcher/ui/dialogs/ProgressDialog.cpp
+++ b/launcher/ui/dialogs/ProgressDialog.cpp
@ -90,6 +90,9 @@ void ProgressDialog::on_skipButton_clicked(bool checked)

 ProgressDialog::~ProgressDialog()
 {
+    for (auto conn : this->m_taskConnections) {
+        disconnect(conn);
+    }   
    delete ui;
 }

@ -140,15 +143,15 @@ int ProgressDialog::execWithTask(Task* task)
    }

    // Connect signals.
-    connect(task, &Task::started, this, &ProgressDialog::onTaskStarted);
-    connect(task, &Task::failed, this, &ProgressDialog::onTaskFailed);
-    connect(task, &Task::succeeded, this, &ProgressDialog::onTaskSucceeded);
-    connect(task, &Task::status, this, &ProgressDialog::changeStatus);
-    connect(task, &Task::details, this, &ProgressDialog::changeStatus);
-    connect(task, &Task::stepProgress, this, &ProgressDialog::changeStepProgress);
-    connect(task, &Task::progress, this, &ProgressDialog::changeProgress);
-    connect(task, &Task::aborted, this, &ProgressDialog::hide);
-    connect(task, &Task::abortStatusChanged, ui->skipButton, &QPushButton::setEnabled);
+    this->m_taskConnections.push_back(connect(task, &Task::started, this, &ProgressDialog::onTaskStarted));
+    this->m_taskConnections.push_back(connect(task, &Task::failed, this, &ProgressDialog::onTaskFailed));
+    this->m_taskConnections.push_back(connect(task, &Task::succeeded, this, &ProgressDialog::onTaskSucceeded));
+    this->m_taskConnections.push_back(connect(task, &Task::status, this, &ProgressDialog::changeStatus));
+    this->m_taskConnections.push_back(connect(task, &Task::details, this, &ProgressDialog::changeStatus));
+    this->m_taskConnections.push_back(connect(task, &Task::stepProgress, this, &ProgressDialog::changeStepProgress));
+    this->m_taskConnections.push_back(connect(task, &Task::progress, this, &ProgressDialog::changeProgress));
+    this->m_taskConnections.push_back(connect(task, &Task::aborted, this, &ProgressDialog::hide));
+    this->m_taskConnections.push_back(connect(task, &Task::abortStatusChanged, ui->skipButton, &QPushButton::setEnabled));

    m_is_multi_step = task->isMultiStep();
    ui->taskProgressScrollArea->setHidden(!m_is_multi_step);
--- a/launcher/ui/dialogs/ProgressDialog.h
+++ b/launcher/ui/dialogs/ProgressDialog.h
@ -94,6 +94,8 @@ class ProgressDialog : public QDialog {

    Task* m_task;
    
+    QList<QMetaObject::Connection> m_taskConnections;
+
    bool m_is_multi_step = false;
    QHash<QUuid, SubTaskProgressBar*> taskProgress;
 };
--- a/launcher/ui/dialogs/skins/SkinManageDialog.cpp
+++ b/launcher/ui/dialogs/skins/SkinManageDialog.cpp
@ -139,6 +139,9 @@ void SkinManageDialog::on_fileBtn_clicked()
 {
    auto filter = QMimeDatabase().mimeTypeForName("image/png").filterString();
    QString raw_path = QFileDialog::getOpenFileName(this, tr("Select Skin Texture"), QString(), filter);
+    if (raw_path.isNull()) {
+        return;
+    }
    auto message = m_list.installSkin(raw_path, {});
    if (!message.isEmpty()) {
        CustomMessageBox::selectable(this, tr("Selected file is not a valid skin"), message, QMessageBox::Critical)->show();
--- a/launcher/ui/pages/modplatform/ModModel.cpp
+++ b/launcher/ui/pages/modplatform/ModModel.cpp
@ -104,18 +104,6 @@ bool checkSide(QString filter, QString value)
    return filter.isEmpty() || value.isEmpty() || filter == "both" || value == "both" || filter == value;
 }

-bool checkMcVersions(std::list<Version> filter, QStringList value)
-{
-    bool valid = false;
-    for (auto mcVersion : filter) {
-        if (value.contains(mcVersion.toString())) {
-            valid = true;
-            break;
-        }
-    }
-    return filter.empty() || valid;
-}
-
 bool ModModel::checkFilters(ModPlatform::IndexedPack::Ptr pack)
 {
    if (!m_filter)
@ -135,7 +123,7 @@ bool ModModel::checkVersionFilters(const ModPlatform::IndexedVersion& v)
            checkSide(m_filter->side, v.side) &&                                    // side
            (m_filter->releases.empty() ||                                          // releases
             std::find(m_filter->releases.cbegin(), m_filter->releases.cend(), v.version_type) != m_filter->releases.cend()) &&
-            checkMcVersions(m_filter->versions, v.mcVersion));  // mcVersions
+            m_filter->checkMcVersions(v.mcVersion));  // mcVersions
 }

 }  // namespace ResourceDownload
--- a/launcher/ui/pages/modplatform/ResourceModel.cpp
+++ b/launcher/ui/pages/modplatform/ResourceModel.cpp
@ -31,9 +31,9 @@ QHash<ResourceModel*, bool> ResourceModel::s_running_models;
 ResourceModel::ResourceModel(ResourceAPI* api) : QAbstractListModel(), m_api(api)
 {
    s_running_models.insert(this, true);
-#ifndef LAUNCHER_TEST
+    if (APPLICATION_DYN) {
        m_current_info_job.setMaxConcurrent(APPLICATION->settings()->get("NumberOfConcurrentDownloads").toInt());
-#endif
+    }
 }

 ResourceModel::~ResourceModel()
@ -60,11 +60,15 @@ auto ResourceModel::data(const QModelIndex& index, int role) const -> QVariant
            return pack->description;
        }
        case Qt::DecorationRole: {
+            if (APPLICATION_DYN) {
                if (auto icon_or_none = const_cast<ResourceModel*>(this)->getIcon(const_cast<QModelIndex&>(index), pack->logoUrl);
                    icon_or_none.has_value())
                    return icon_or_none.value();

                return APPLICATION->getThemedIcon("screenshot-placeholder");
+            } else {
+                return {};
+            }
        }
        case Qt::SizeHintRole:
            return QSize(0, 58);
--- a/launcher/ui/pages/modplatform/ResourcePage.cpp
+++ b/launcher/ui/pages/modplatform/ResourcePage.cpp
@ -255,7 +255,10 @@ void ResourcePage::updateSelectionButton()

    m_ui->resourceSelectionButton->setEnabled(true);
    if (auto current_pack = getCurrentPack(); current_pack) {
-        if (!current_pack->isVersionSelected(m_selected_version_index))
+        if (current_pack->versionsLoaded && current_pack->versions.empty()) {
+            m_ui->resourceSelectionButton->setEnabled(false);
+            qWarning() << tr("No version available for the selected pack");
+        } else if (!current_pack->isVersionSelected(m_selected_version_index))
            m_ui->resourceSelectionButton->setText(tr("Select %1 for download").arg(resourceString()));
        else
            m_ui->resourceSelectionButton->setText(tr("Deselect %1 for download").arg(resourceString()));
--- a/launcher/ui/pages/modplatform/flame/FlameModel.cpp
+++ b/launcher/ui/pages/modplatform/flame/FlameModel.cpp
@ -1,6 +1,7 @@
 #include "FlameModel.h"
 #include <Json.h>
 #include "Application.h"
+#include "modplatform/ModIndex.h"
 #include "modplatform/ResourceAPI.h"
 #include "modplatform/flame/FlameAPI.h"
 #include "ui/widgets/ProjectItem.h"
@ -183,34 +184,28 @@ void ListModel::performPaginatedSearch()
            return;
        }
    }
-    auto netJob = makeShared<NetJob>("Flame::Search", APPLICATION->network());
-    auto searchUrl = QString(
-                         "https://api.curseforge.com/v1/mods/search?"
-                         "gameId=432&"
-                         "classId=4471&"
-                         "index=%1&"
-                         "pageSize=25&"
-                         "searchFilter=%2&"
-                         "sortField=%3&"
-                         "sortOrder=desc")
-                         .arg(nextSearchOffset)
-                         .arg(currentSearchTerm)
-                         .arg(currentSort + 1);
+    ResourceAPI::SortingMethod sort{};
+    sort.index = currentSort + 1;

-    netJob->addNetAction(Net::ApiDownload::makeByteArray(QUrl(searchUrl), response));
+    auto netJob = makeShared<NetJob>("Flame::Search", APPLICATION->network());
+    auto searchUrl = FlameAPI().getSearchURL({ ModPlatform::ResourceType::MODPACK, nextSearchOffset, currentSearchTerm, sort,
+                                               m_filter->loaders, m_filter->versions, "", m_filter->categoryIds });
+
+    netJob->addNetAction(Net::ApiDownload::makeByteArray(QUrl(searchUrl.value()), response));
    jobPtr = netJob;
    jobPtr->start();
    QObject::connect(netJob.get(), &NetJob::succeeded, this, &ListModel::searchRequestFinished);
    QObject::connect(netJob.get(), &NetJob::failed, this, &ListModel::searchRequestFailed);
 }

-void ListModel::searchWithTerm(const QString& term, int sort)
+void ListModel::searchWithTerm(const QString& term, int sort, std::shared_ptr<ModFilterWidget::Filter> filter, bool filterChanged)
 {
-    if (currentSearchTerm == term && currentSearchTerm.isNull() == term.isNull() && currentSort == sort) {
+    if (currentSearchTerm == term && currentSearchTerm.isNull() == term.isNull() && currentSort == sort && !filterChanged) {
        return;
    }
    currentSearchTerm = term;
    currentSort = sort;
+    m_filter = filter;
    if (hasActiveSearchJob()) {
        jobPtr->abort();
        searchState = ResetRequested;
--- a/launcher/ui/pages/modplatform/flame/FlameModel.h
+++ b/launcher/ui/pages/modplatform/flame/FlameModel.h
@ -14,6 +14,7 @@

 #include <net/NetJob.h>
 #include <functional>
+#include "ui/widgets/ModFilterWidget.h"

 #include <modplatform/flame/FlamePackIndex.h>

@ -38,7 +39,7 @@ class ListModel : public QAbstractListModel {
    void fetchMore(const QModelIndex& parent) override;

    void getLogo(const QString& logo, const QString& logoUrl, LogoCallback callback);
-    void searchWithTerm(const QString& term, int sort);
+    void searchWithTerm(const QString& term, int sort, std::shared_ptr<ModFilterWidget::Filter> filter, bool filterChanged);

    [[nodiscard]] bool hasActiveSearchJob() const { return jobPtr && jobPtr->isRunning(); }
    [[nodiscard]] Task::Ptr activeSearchJob() { return hasActiveSearchJob() ? jobPtr : nullptr; }
@ -65,6 +66,7 @@ class ListModel : public QAbstractListModel {

    QString currentSearchTerm;
    int currentSort = 0;
+    std::shared_ptr<ModFilterWidget::Filter> m_filter;
    int nextSearchOffset = 0;
    enum SearchState { None, CanPossiblyFetchMore, ResetRequested, Finished } searchState = None;
    Task::Ptr jobPtr;
--- a/launcher/ui/pages/modplatform/flame/FlamePage.cpp
+++ b/launcher/ui/pages/modplatform/flame/FlamePage.cpp
@ -34,10 +34,14 @@
 */

 #include "FlamePage.h"
+#include "Version.h"
+#include "modplatform/flame/FlamePackIndex.h"
 #include "ui/dialogs/CustomMessageBox.h"
+#include "ui/widgets/ModFilterWidget.h"
 #include "ui_FlamePage.h"

 #include <QKeyEvent>
+#include <memory>

 #include "Application.h"
 #include "FlameModel.h"
@ -88,6 +92,7 @@ FlamePage::FlamePage(NewInstanceDialog* dialog, QWidget* parent)

    ui->packView->setItemDelegate(new ProjectItemDelegate(this));
    ui->packDescription->setMetaEntry("FlamePacks");
+    createFilterWidget();
 }

 FlamePage::~FlamePage()
@ -131,10 +136,25 @@ void FlamePage::openedImpl()

 void FlamePage::triggerSearch()
 {
-    listModel->searchWithTerm(ui->searchEdit->text(), ui->sortByBox->currentIndex());
+    ui->packView->selectionModel()->setCurrentIndex({}, QItemSelectionModel::SelectionFlag::ClearAndSelect);
+    ui->packView->clearSelection();
+    ui->packDescription->clear();
+    ui->versionSelectionBox->clear();
+    listModel->searchWithTerm(ui->searchEdit->text(), ui->sortByBox->currentIndex(), m_filterWidget->getFilter(),
+                              m_filterWidget->changed());
    m_fetch_progress.watch(listModel->activeSearchJob().get());
 }

+bool checkVersionFilters(const Flame::IndexedVersion& v, std::shared_ptr<ModFilterWidget::Filter> filter)
+{
+    if (!filter)
+        return true;
+    return ((!filter->loaders || !v.loaders || filter->loaders & v.loaders) &&  // loaders
+            (filter->releases.empty() ||                                        // releases
+             std::find(filter->releases.cbegin(), filter->releases.cend(), v.version_type) != filter->releases.cend()) &&
+            filter->checkMcVersions({ v.mcVersion }));  // mcVersions}
+}
+
 void FlamePage::onSelectionChanged(QModelIndex curr, [[maybe_unused]] QModelIndex prev)
 {
    ui->versionSelectionBox->clear();
@ -148,7 +168,7 @@ void FlamePage::onSelectionChanged(QModelIndex curr, [[maybe_unused]] QModelInde

    current = listModel->data(curr, Qt::UserRole).value<Flame::IndexedPack>();

-    if (current.versionsLoaded == false) {
+    if (!current.versionsLoaded || m_filterWidget->changed()) {
        qDebug() << "Loading flame modpack versions";
        auto netJob = new NetJob(QString("Flame::PackVersions(%1)").arg(current.name), APPLICATION->network());
        auto response = std::make_shared<QByteArray>();
@ -176,6 +196,16 @@ void FlamePage::onSelectionChanged(QModelIndex curr, [[maybe_unused]] QModelInde
                qWarning() << "Error while reading flame modpack version: " << e.cause();
            }

+            auto pred = [this](const Flame::IndexedVersion& v) { return !checkVersionFilters(v, m_filterWidget->getFilter()); };
+#if QT_VERSION >= QT_VERSION_CHECK(6, 1, 0)
+            current.versions.removeIf(pred);
+#else
+    for (auto it = current.versions.begin(); it != current.versions.end();)
+        if (pred(*it))
+            it = current.versions.erase(it);
+        else
+            ++it;
+#endif
            for (auto version : current.versions) {
                auto release_type = version.version_type.isValid() ? QString(" [%1]").arg(version.version_type.toString()) : "";
                auto mcVersion = !version.mcVersion.isEmpty() && !version.version.contains(version.mcVersion)
@ -308,3 +338,25 @@ void FlamePage::setSearchTerm(QString term)
 {
    ui->searchEdit->setText(term);
 }
+
+void FlamePage::createFilterWidget()
+{
+    auto widget = ModFilterWidget::create(nullptr, false, this);
+    m_filterWidget.swap(widget);
+    auto old = ui->splitter->replaceWidget(0, m_filterWidget.get());
+    // because we replaced the widget we also need to delete it
+    if (old) {
+        delete old;
+    }
+
+    connect(ui->filterButton, &QPushButton::clicked, this, [this] { m_filterWidget->setHidden(!m_filterWidget->isHidden()); });
+
+    connect(m_filterWidget.get(), &ModFilterWidget::filterChanged, this, &FlamePage::triggerSearch);
+    auto response = std::make_shared<QByteArray>();
+    m_categoriesTask = FlameAPI::getCategories(response, ModPlatform::ResourceType::MODPACK);
+    QObject::connect(m_categoriesTask.get(), &Task::succeeded, [this, response]() {
+        auto categories = FlameAPI::loadModCategories(response);
+        m_filterWidget->setCategories(categories);
+    });
+    m_categoriesTask->start();
+}
--- a/launcher/ui/pages/modplatform/flame/FlamePage.h
+++ b/launcher/ui/pages/modplatform/flame/FlamePage.h
@ -41,6 +41,7 @@
 #include <modplatform/flame/FlamePackIndex.h>
 #include <QTimer>
 #include "ui/pages/modplatform/ModpackProviderBasePage.h"
+#include "ui/widgets/ModFilterWidget.h"
 #include "ui/widgets/ProgressWidget.h"

 namespace Ui {
@ -84,6 +85,7 @@ class FlamePage : public QWidget, public ModpackProviderBasePage {
    void triggerSearch();
    void onSelectionChanged(QModelIndex first, QModelIndex second);
    void onVersionSelectionChanged(int index);
+    void createFilterWidget();

   private:
    Ui::FlamePage* ui = nullptr;
@ -97,4 +99,7 @@ class FlamePage : public QWidget, public ModpackProviderBasePage {

    // Used to do instant searching with a delay to cache quick changes
    QTimer m_search_timer;
+
+    unique_qobject_ptr<ModFilterWidget> m_filterWidget;
+    Task::Ptr m_categoriesTask;
 };
--- a/launcher/ui/pages/modplatform/flame/FlamePage.ui
+++ b/launcher/ui/pages/modplatform/flame/FlamePage.ui
@ -29,6 +29,8 @@
     </property>
    </widget>
   </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout">
     <item>
      <widget class="QLineEdit" name="searchEdit">
       <property name="placeholderText">
@ -37,8 +39,26 @@
      </widget>
     </item>
     <item>
-    <layout class="QHBoxLayout">
+      <widget class="QPushButton" name="filterButton">
+       <property name="text">
+        <string>Filter</string>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
   <item>
+    <widget class="QSplitter" name="splitter">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <widget class="QWidget" name="widget" native="true"/>
     <widget class="QListView" name="packView">
      <property name="horizontalScrollBarPolicy">
       <enum>Qt::ScrollBarAlwaysOff</enum>
@ -53,8 +73,6 @@
       </size>
      </property>
     </widget>
-     </item>
-     <item>
     <widget class="ProjectDescriptionPage" name="packDescription">
      <property name="openExternalLinks">
       <bool>true</bool>
@ -63,8 +81,7 @@
       <bool>true</bool>
      </property>
     </widget>
-     </item>
-    </layout>
+    </widget>
   </item>
   <item>
    <layout class="QHBoxLayout">
--- a/launcher/ui/pages/modplatform/flame/FlameResourcePages.cpp
+++ b/launcher/ui/pages/modplatform/flame/FlameResourcePages.cpp
@ -215,11 +215,11 @@ unique_qobject_ptr<ModFilterWidget> FlameModPage::createFilterWidget()
 void FlameModPage::prepareProviderCategories()
 {
    auto response = std::make_shared<QByteArray>();
-    auto task = FlameAPI::getModCategories(response);
-    QObject::connect(task.get(), &Task::succeeded, [this, response]() {
+    m_categoriesTask = FlameAPI::getModCategories(response);
+    QObject::connect(m_categoriesTask.get(), &Task::succeeded, [this, response]() {
        auto categories = FlameAPI::loadModCategories(response);
        m_filter_widget->setCategories(categories);
    });
-    task->start();
+    m_categoriesTask->start();
 };
 }  // namespace ResourceDownload
--- a/launcher/ui/pages/modplatform/flame/FlameResourcePages.h
+++ b/launcher/ui/pages/modplatform/flame/FlameResourcePages.h
@ -100,6 +100,9 @@ class FlameModPage : public ModPage {

   protected:
    virtual void prepareProviderCategories() override;
+
+   private:
+    Task::Ptr m_categoriesTask;
 };

 class FlameResourcePackPage : public ResourcePackResourcePage {
--- a/launcher/ui/pages/modplatform/modrinth/ModrinthModel.cpp
+++ b/launcher/ui/pages/modplatform/modrinth/ModrinthModel.cpp
@ -152,33 +152,26 @@ void ModpackListModel::performPaginatedSearch()
            return;
        }
    }  // TODO: Move to standalone API
-    auto netJob = makeShared<NetJob>("Modrinth::SearchModpack", APPLICATION->network());
-    auto searchAllUrl = QString(BuildConfig.MODRINTH_PROD_URL +
-                                "/search?"
-                                "offset=%1&"
-                                "limit=%2&"
-                                "query=%3&"
-                                "index=%4&"
-                                "facets=[[\"project_type:modpack\"]]")
-                            .arg(nextSearchOffset)
-                            .arg(m_modpacks_per_page)
-                            .arg(currentSearchTerm)
-                            .arg(currentSort);
+    ResourceAPI::SortingMethod sort{};
+    sort.name = currentSort;
+    auto searchUrl = ModrinthAPI().getSearchURL({ ModPlatform::ResourceType::MODPACK, nextSearchOffset, currentSearchTerm, sort,
+                                                  m_filter->loaders, m_filter->versions, "", m_filter->categoryIds });

-    netJob->addNetAction(Net::ApiDownload::makeByteArray(QUrl(searchAllUrl), m_all_response));
+    auto netJob = makeShared<NetJob>("Modrinth::SearchModpack", APPLICATION->network());
+    netJob->addNetAction(Net::ApiDownload::makeByteArray(QUrl(searchUrl.value()), m_allResponse));

    QObject::connect(netJob.get(), &NetJob::succeeded, this, [this] {
-        QJsonParseError parse_error_all{};
+        QJsonParseError parseError{};

-        QJsonDocument doc_all = QJsonDocument::fromJson(*m_all_response, &parse_error_all);
-        if (parse_error_all.error != QJsonParseError::NoError) {
-            qWarning() << "Error while parsing JSON response from " << debugName() << " at " << parse_error_all.offset
-                       << " reason: " << parse_error_all.errorString();
-            qWarning() << *m_all_response;
+        QJsonDocument doc = QJsonDocument::fromJson(*m_allResponse, &parseError);
+        if (parseError.error != QJsonParseError::NoError) {
+            qWarning() << "Error while parsing JSON response from " << debugName() << " at " << parseError.offset
+                       << " reason: " << parseError.errorString();
+            qWarning() << *m_allResponse;
            return;
        }

-        searchRequestFinished(doc_all);
+        searchRequestFinished(doc);
    });
    QObject::connect(netJob.get(), &NetJob::failed, this, &ModpackListModel::searchRequestFailed);

@ -220,19 +213,23 @@ static auto sortFromIndex(int index) -> QString
    }
 }

-void ModpackListModel::searchWithTerm(const QString& term, const int sort)
+void ModpackListModel::searchWithTerm(const QString& term,
+                                      const int sort,
+                                      std::shared_ptr<ModFilterWidget::Filter> filter,
+                                      bool filterChanged)
 {
    if (sort > 5 || sort < 0)
        return;

    auto sort_str = sortFromIndex(sort);

-    if (currentSearchTerm == term && currentSearchTerm.isNull() == term.isNull() && currentSort == sort_str) {
+    if (currentSearchTerm == term && currentSearchTerm.isNull() == term.isNull() && currentSort == sort_str && !filterChanged) {
        return;
    }

    currentSearchTerm = term;
    currentSort = sort_str;
+    m_filter = filter;

    refresh();
 }
--- a/launcher/ui/pages/modplatform/modrinth/ModrinthModel.h
+++ b/launcher/ui/pages/modplatform/modrinth/ModrinthModel.h
@ -71,7 +71,7 @@ class ModpackListModel : public QAbstractListModel {
    /* Ask the API for more information */
    void fetchMore(const QModelIndex& parent) override;
    void refresh();
-    void searchWithTerm(const QString& term, int sort);
+    void searchWithTerm(const QString& term, int sort, std::shared_ptr<ModFilterWidget::Filter> filter, bool filterChanged);

    [[nodiscard]] bool hasActiveSearchJob() const { return jobPtr && jobPtr->isRunning(); }
    [[nodiscard]] Task::Ptr activeSearchJob() { return hasActiveSearchJob() ? jobPtr : nullptr; }
@ -112,12 +112,13 @@ class ModpackListModel : public QAbstractListModel {

    QString currentSearchTerm;
    QString currentSort;
+    std::shared_ptr<ModFilterWidget::Filter> m_filter;
    int nextSearchOffset = 0;
    enum SearchState { None, CanPossiblyFetchMore, ResetRequested, Finished } searchState = None;

    Task::Ptr jobPtr;

-    std::shared_ptr<QByteArray> m_all_response = std::make_shared<QByteArray>();
+    std::shared_ptr<QByteArray> m_allResponse = std::make_shared<QByteArray>();
    QByteArray m_specific_response;

    int m_modpacks_per_page = 20;
--- a/launcher/ui/pages/modplatform/modrinth/ModrinthPage.cpp
+++ b/launcher/ui/pages/modplatform/modrinth/ModrinthPage.cpp
@ -35,6 +35,8 @@
 */

 #include "ModrinthPage.h"
+#include "Version.h"
+#include "modplatform/modrinth/ModrinthAPI.h"
 #include "ui/dialogs/CustomMessageBox.h"
 #include "ui_ModrinthPage.h"

@ -58,6 +60,7 @@ ModrinthPage::ModrinthPage(NewInstanceDialog* dialog, QWidget* parent)
    : QWidget(parent), ui(new Ui::ModrinthPage), dialog(dialog), m_fetch_progress(this, false)
 {
    ui->setupUi(this);
+    createFilterWidget();

    ui->searchEdit->installEventFilter(this);
    m_model = new Modrinth::ModpackListModel(this);
@ -126,6 +129,16 @@ bool ModrinthPage::eventFilter(QObject* watched, QEvent* event)
    return QObject::eventFilter(watched, event);
 }

+bool checkVersionFilters(const Modrinth::ModpackVersion& v, std::shared_ptr<ModFilterWidget::Filter> filter)
+{
+    if (!filter)
+        return true;
+    return ((!filter->loaders || !v.loaders || filter->loaders & v.loaders) &&  // loaders
+            (filter->releases.empty() ||                                        // releases
+             std::find(filter->releases.cbegin(), filter->releases.cend(), v.version_type) != filter->releases.cend()) &&
+            filter->checkMcVersions({ v.gameVersion }));  // gameVersion}
+}
+
 void ModrinthPage::onSelectionChanged(QModelIndex curr, [[maybe_unused]] QModelIndex prev)
 {
    ui->versionSelectionBox->clear();
@ -190,7 +203,7 @@ void ModrinthPage::onSelectionChanged(QModelIndex curr, [[maybe_unused]] QModelI
    } else
        updateUI();

-    if (!current.versionsLoaded) {
+    if (!current.versionsLoaded || m_filterWidget->changed()) {
        qDebug() << "Loading modrinth modpack versions";

        auto netJob = new NetJob(QString("Modrinth::PackVersions(%1)").arg(current.name), APPLICATION->network());
@ -221,6 +234,16 @@ void ModrinthPage::onSelectionChanged(QModelIndex curr, [[maybe_unused]] QModelI
                qDebug() << *response;
                qWarning() << "Error while reading modrinth modpack version: " << e.cause();
            }
+            auto pred = [this](const Modrinth::ModpackVersion& v) { return !checkVersionFilters(v, m_filterWidget->getFilter()); };
+#if QT_VERSION >= QT_VERSION_CHECK(6, 1, 0)
+            current.versions.removeIf(pred);
+#else
+    for (auto it = current.versions.begin(); it != current.versions.end();)
+        if (pred(*it))
+            it = current.versions.erase(it);
+        else
+            ++it;
+#endif
            for (auto version : current.versions) {
                auto release_type = version.version_type.isValid() ? QString(" [%1]").arg(version.version_type.toString()) : "";
                auto mcVersion = !version.gameVersion.isEmpty() && !version.name.contains(version.gameVersion)
@ -338,7 +361,11 @@ void ModrinthPage::suggestCurrent()

 void ModrinthPage::triggerSearch()
 {
-    m_model->searchWithTerm(ui->searchEdit->text(), ui->sortByBox->currentIndex());
+    ui->packView->selectionModel()->setCurrentIndex({}, QItemSelectionModel::SelectionFlag::ClearAndSelect);
+    ui->packView->clearSelection();
+    ui->packDescription->clear();
+    ui->versionSelectionBox->clear();
+    m_model->searchWithTerm(ui->searchEdit->text(), ui->sortByBox->currentIndex(), m_filterWidget->getFilter(), m_filterWidget->changed());
    m_fetch_progress.watch(m_model->activeSearchJob().get());
 }

@ -361,3 +388,25 @@ QString ModrinthPage::getSerachTerm() const
 {
    return ui->searchEdit->text();
 }
+
+void ModrinthPage::createFilterWidget()
+{
+    auto widget = ModFilterWidget::create(nullptr, true, this);
+    m_filterWidget.swap(widget);
+    auto old = ui->splitter->replaceWidget(0, m_filterWidget.get());
+    // because we replaced the widget we also need to delete it
+    if (old) {
+        delete old;
+    }
+
+    connect(ui->filterButton, &QPushButton::clicked, this, [this] { m_filterWidget->setHidden(!m_filterWidget->isHidden()); });
+
+    connect(m_filterWidget.get(), &ModFilterWidget::filterChanged, this, &ModrinthPage::triggerSearch);
+    auto response = std::make_shared<QByteArray>();
+    m_categoriesTask = ModrinthAPI::getModCategories(response);
+    QObject::connect(m_categoriesTask.get(), &Task::succeeded, [this, response]() {
+        auto categories = ModrinthAPI::loadCategories(response, "modpack");
+        m_filterWidget->setCategories(categories);
+    });
+    m_categoriesTask->start();
+}
--- a/launcher/ui/pages/modplatform/modrinth/ModrinthPage.h
+++ b/launcher/ui/pages/modplatform/modrinth/ModrinthPage.h
@ -41,6 +41,7 @@

 #include "modplatform/modrinth/ModrinthPackManifest.h"
 #include "ui/pages/modplatform/ModpackProviderBasePage.h"
+#include "ui/widgets/ModFilterWidget.h"
 #include "ui/widgets/ProgressWidget.h"

 #include <QTimer>
@ -87,6 +88,7 @@ class ModrinthPage : public QWidget, public ModpackProviderBasePage {
    void onSelectionChanged(QModelIndex first, QModelIndex second);
    void onVersionSelectionChanged(int index);
    void triggerSearch();
+    void createFilterWidget();

   private:
    Ui::ModrinthPage* ui;
@ -100,4 +102,7 @@ class ModrinthPage : public QWidget, public ModpackProviderBasePage {

    // Used to do instant searching with a delay to cache quick changes
    QTimer m_search_timer;
+
+    unique_qobject_ptr<ModFilterWidget> m_filterWidget;
+    Task::Ptr m_categoriesTask;
 };
--- a/launcher/ui/pages/modplatform/modrinth/ModrinthPage.ui
+++ b/launcher/ui/pages/modplatform/modrinth/ModrinthPage.ui
@ -11,16 +11,36 @@
   </rect>
  </property>
  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout">
     <item>
      <widget class="QLineEdit" name="searchEdit">
       <property name="placeholderText">
-      <string>Search and filter ...</string>
+        <string>Search and filter...</string>
       </property>
      </widget>
     </item>
     <item>
-    <layout class="QHBoxLayout">
+      <widget class="QPushButton" name="filterButton">
+       <property name="text">
+        <string>Filter</string>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
   <item>
+    <widget class="QSplitter" name="splitter">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <widget class="QWidget" name="widget" native="true"/>
     <widget class="QListView" name="packView">
      <property name="horizontalScrollBarPolicy">
       <enum>Qt::ScrollBarAlwaysOff</enum>
@ -35,8 +55,6 @@
       </size>
      </property>
     </widget>
-     </item>
-     <item>
     <widget class="ProjectDescriptionPage" name="packDescription">
      <property name="openExternalLinks">
       <bool>true</bool>
@ -45,8 +63,7 @@
       <bool>true</bool>
      </property>
     </widget>
-     </item>
-    </layout>
+    </widget>
   </item>
   <item>
    <layout class="QHBoxLayout">
--- a/launcher/ui/widgets/CustomCommands.ui
+++ b/launcher/ui/widgets/CustomCommands.ui
@ -38,19 +38,6 @@
      <bool>false</bool>
     </property>
     <layout class="QGridLayout" name="gridLayout_4">
-      <item row="2" column="0">
-       <widget class="QLabel" name="labelPostExitCmd">
-        <property name="text">
-         <string>P&amp;ost-exit command:</string>
-        </property>
-        <property name="buddy">
-         <cstring>postExitCmdTextBox</cstring>
-        </property>
-       </widget>
-      </item>
-      <item row="0" column="1">
-       <widget class="QLineEdit" name="preLaunchCmdTextBox"/>
-      </item>
      <item row="0" column="0">
       <widget class="QLabel" name="labelPreLaunchCmd">
        <property name="text">
@ -61,8 +48,8 @@
        </property>
       </widget>
      </item>
-      <item row="2" column="1">
-       <widget class="QLineEdit" name="postExitCmdTextBox"/>
+      <item row="0" column="1">
+       <widget class="QLineEdit" name="preLaunchCmdTextBox"/>
      </item>
      <item row="1" column="0">
       <widget class="QLabel" name="labelWrapperCmd">
@ -77,6 +64,19 @@
      <item row="1" column="1">
       <widget class="QLineEdit" name="wrapperCmdTextBox"/>
      </item>
+      <item row="2" column="0">
+       <widget class="QLabel" name="labelPostExitCmd">
+        <property name="text">
+         <string>P&amp;ost-exit command:</string>
+        </property>
+        <property name="buddy">
+         <cstring>postExitCmdTextBox</cstring>
+        </property>
+       </widget>
+      </item>
+      <item row="2" column="1">
+       <widget class="QLineEdit" name="postExitCmdTextBox"/>
+      </item>
     </layout>
    </widget>
   </item>
--- a/launcher/ui/widgets/ModFilterWidget.cpp
+++ b/launcher/ui/widgets/ModFilterWidget.cpp
@ -64,10 +64,49 @@ class VersionBasicModel : public QIdentityProxyModel {
    {
        if (role == Qt::DisplayRole)
            return QIdentityProxyModel::data(index, BaseVersionList::VersionIdRole);
+        if (role == Qt::UserRole)
+            return QIdentityProxyModel::data(index, BaseVersionList::VersionIdRole);
        return {};
    }
 };

+class AllVersionProxyModel : public QSortFilterProxyModel {
+    Q_OBJECT
+
+   public:
+    AllVersionProxyModel(QObject* parent = nullptr) : QSortFilterProxyModel(parent) {}
+
+    int rowCount(const QModelIndex& parent = QModelIndex()) const override { return QSortFilterProxyModel::rowCount(parent) + 1; }
+
+    QVariant data(const QModelIndex& index, int role = Qt::DisplayRole) const override
+    {
+        if (!index.isValid()) {
+            return {};
+        }
+
+        if (index.row() == 0) {
+            if (role == Qt::DisplayRole) {
+                return tr("All Versions");
+            }
+            if (role == Qt::UserRole) {
+                return "all";
+            }
+            return {};
+        }
+
+        QModelIndex newIndex = QSortFilterProxyModel::index(index.row() - 1, index.column());
+        return QSortFilterProxyModel::data(newIndex, role);
+    }
+
+    Qt::ItemFlags flags(const QModelIndex& index) const override
+    {
+        if (index.row() == 0) {
+            return Qt::ItemIsSelectable | Qt::ItemIsEnabled;
+        }
+        return QSortFilterProxyModel::flags(index);
+    }
+};
+
 ModFilterWidget::ModFilterWidget(MinecraftInstance* instance, bool extended, QWidget* parent)
    : QTabWidget(parent), ui(new Ui::ModFilterWidget), m_instance(instance), m_filter(new Filter())
 {
@ -76,14 +115,21 @@ ModFilterWidget::ModFilterWidget(MinecraftInstance* instance, bool extended, QWi
    m_versions_proxy = new VersionProxyModel(this);
    m_versions_proxy->setFilter(BaseVersionList::TypeRole, new ExactFilter("release"));

-    auto proxy = new VersionBasicModel(this);
+    QAbstractProxyModel* proxy = new VersionBasicModel(this);
    proxy->setSourceModel(m_versions_proxy);

    if (extended) {
+        if (!m_instance) {
+            ui->environmentGroup->hide();
+        }
        ui->versions->setSourceModel(proxy);
        ui->versions->setSeparator(", ");
+        ui->versions->setDefaultText(tr("All Versions"));
        ui->version->hide();
    } else {
+        auto allVersions = new AllVersionProxyModel(this);
+        allVersions->setSourceModel(proxy);
+        proxy = allVersions;
        ui->version->setModel(proxy);
        ui->versions->hide();
        ui->showAllVersions->hide();
@ -162,6 +208,7 @@ void ModFilterWidget::loadVersionList()

 void ModFilterWidget::prepareBasicFilter()
 {
+    if (m_instance) {
        m_filter->hideInstalled = false;
        m_filter->side = "";  // or "both"
        auto loaders = m_instance->getPackProfile()->getSupportedModLoaders().value();
@ -174,6 +221,9 @@ void ModFilterWidget::prepareBasicFilter()
        m_filter->versions.emplace_front(def);
        ui->versions->setCheckedItems({ def });
        ui->version->setCurrentIndex(ui->version->findText(def));
+    } else {
+        ui->hideInstalled->hide();
+    }
 }

 void ModFilterWidget::onShowAllVersionsChanged()
@ -249,7 +299,9 @@ void ModFilterWidget::onHideInstalledFilterChanged()
 void ModFilterWidget::onVersionFilterTextChanged(const QString& version)
 {
    m_filter->versions.clear();
+    if (ui->version->currentData(Qt::UserRole) != "all") {
        m_filter->versions.emplace_back(version);
+    }
    m_filter_changed = true;
    emit filterChanged();
 }
--- a/launcher/ui/widgets/ModFilterWidget.h
+++ b/launcher/ui/widgets/ModFilterWidget.h
@ -71,6 +71,15 @@ class ModFilterWidget : public QTabWidget {
                   releases == other.releases && categoryIds == other.categoryIds;
        }
        bool operator!=(const Filter& other) const { return !(*this == other); }
+
+        bool checkMcVersions(QStringList value)
+        {
+            for (auto mcVersion : versions)
+                if (value.contains(mcVersion.toString()))
+                    return true;
+
+            return versions.empty();
+        }
    };

    static unique_qobject_ptr<ModFilterWidget> create(MinecraftInstance* instance, bool extended, QWidget* parent = nullptr);
--- a/nix/unwrapped.nix
+++ b/nix/unwrapped.nix
@ -87,6 +87,8 @@ stdenv.mkDerivation {
      (lib.cmakeFeature "CMAKE_INSTALL_PREFIX" "${placeholder "out"}/Applications/")
    ];

+  doCheck = true;
+
  dontWrapQtApps = true;

  meta = {
--- a/program_info/CMakeLists.txt
+++ b/program_info/CMakeLists.txt
@ -57,7 +57,7 @@ Section "Visual Studio Runtime"
    Pop $0
    ${If} $0 == "OK"
        DetailPrint "Download successful"
-        ExecWait "$INSTDIR\vc_redist\$vc_redist_exe /install /passive /norestart\"
+        ExecWait "$INSTDIR\vc_redist\$vc_redist_exe /install /passive /norestart"
    ${Else}
        DetailPrint "Download failed with error $0"
    ${EndIf}