nixos-config/shells/flatpak.nix

# My custom shell for developing Flatpak manifests.
# This is not suitable outside of NixOS, unfortunately.
{ mkShell, lib, diffoscope, desktop-file-utils, flatpak-builder
, editorconfig-checker, editorconfig-core-c, git, dasel }:

mkShell {
  packages = [
    dasel # For converting various data into something.
    desktop-file-utils # Interacting with the desktop entry files are a must.
    diffoscope # `diff(1)` on steroids.
    flatpak-builder # A required tool.
    editorconfig-checker # We're most likely writing manifests in YAML so I need them consistent spaces.
    editorconfig-core-c # editorconfig will not work without the engine, of course.
    git # This is the common choice as the VCS — otherwise, bring your own.
  ];
}