overlays can cause issues we don't run into upstream, especially when
used on stable channels for example. preferring the pure `packages`
output also encourages the use of our binary cache by users, who
probably don't like building the launcher all too much
Signed-off-by: seth <getchoo@tuta.io>
The primary goals here include making the flake easier to contribute to
by having it follow the standard boilerplate, while also limiting the
size of our flake.lock to lower the chance of duplicate inputs for users
Signed-off-by: seth <getchoo@tuta.io>
