nixpkgs/pkgs/by-name/me/megapixels/package.nix

{ stdenv
, lib
, fetchFromGitLab
, glib
, meson
, ninja
, pkg-config
, wrapGAppsHook4
, feedbackd
, gtk4
, libepoxy
, xorg
, zbar
, tiffSupport ? true
, libraw
, jpgSupport ? true
, graphicsmagick
, exiftool
}:

assert jpgSupport -> tiffSupport;

let
  inherit (lib) makeBinPath optional optionals optionalString;
  runtimePath = makeBinPath (
    optional tiffSupport libraw
    ++ optionals jpgSupport [ graphicsmagick exiftool ]
  );
in
stdenv.mkDerivation (finalAttrs: {
  pname = "megapixels";
  version = "1.8.2";

  src = fetchFromGitLab {
    owner = "megapixels-org";
    repo = "Megapixels";
    rev = finalAttrs.version;
    hash = "sha256-odsOYrk//ZhodsumLpJjhPDcwF1gkE/no166u+IDxSY=";
  };

  nativeBuildInputs = [
    glib
    meson
    ninja
    pkg-config
    wrapGAppsHook4
  ];

  buildInputs = [
    feedbackd
    gtk4
    libepoxy
    xorg.libXrandr
    zbar
  ];

  patches = [
    # In the settings menu of Megapixels the user can select a different postprocessing script. The path to the script is then stored in a dconf setting. If the path changes, for example because it is in the Nix store and a dependency of the postprocessor changes, Megapixels will try to use this now non-existing old path. This will cause Megapixels to not save any images that were taken until the user opens the settings again and selects a postprocessor again. Using a global path allows the setting to keep working.
    # Note that this patch only fixes the issue for external postprocessors like postprocessd but the postprocessor script that comes with Megapixels is still refered to by the Nix store path.
    ./search-for-postprocessors-in-NixOS-specific-global-location.patch
  ];

  postInstall = ''
    glib-compile-schemas $out/share/glib-2.0/schemas
  '';

  preFixup = optionalString (tiffSupport || jpgSupport) ''
    gappsWrapperArgs+=(
      --prefix PATH : ${lib.escapeShellArg runtimePath}
    )
  '';

  strictDeps = true;

  meta = with lib; {
    description = "GTK4 camera application that knows how to deal with the media request api";
    homepage = "https://gitlab.com/megapixels-org/Megapixels";
    changelog = "https://gitlab.com/megapixels-org/Megapixels/-/tags/${finalAttrs.version}";
    license = licenses.gpl3Only;
    maintainers = with maintainers; [ dotlambda Luflosi ];
    platforms = platforms.linux;
    mainProgram = "megapixels";
  };
})