work in progress

pixlit.nix

@@ -0,0 +1,77 @@
+{ lib
+, python3Packages
+, gobject-introspection
+, wrapGAppsHook4
+, libadwaita
+, gtk4
+, gdk-pixbuf
+}:
+
+python3Packages.buildPythonApplication {
+  pname   = "pixlit";
+  version = "1.0.0";
+
+  src = ./.;
+
+  format = "other";   # plain script — no setup.py / pyproject.toml
+
+  # No compile step needed for pure Python
+  dontBuild = true;
+
+  nativeBuildInputs = [
+    gobject-introspection
+    wrapGAppsHook4
+  ];
+
+  buildInputs = [
+    gtk4
+    libadwaita
+    gdk-pixbuf
+  ];
+
+  propagatedBuildInputs = with python3Packages; [
+    pillow
+    pillow-heif   # registers HEIC/HEIF opener with Pillow
+    pygobject3
+  ];
+
+  installPhase = ''
+    runHook preInstall
+
+    # ── Binary ───────────────────────────────────────────────────────────────
+    install -Dm755 pixlit.py $out/bin/pixlit
+
+    # ── Icons ────────────────────────────────────────────────────────────────
+    install -Dm644 pixlit.svg \
+      $out/share/icons/hicolor/scalable/apps/pixlit.svg
+
+    for size in 128 256 512; do
+      install -Dm644 pixlit-''${size}.png \
+        $out/share/icons/hicolor/''${size}x''${size}/apps/pixlit.png
+    done
+
+    # ── Desktop entry ─────────────────────────────────────────────────────────
+    install -Dm644 /dev/stdin $out/share/applications/pixlit.desktop <<EOF
+    [Desktop Entry]
+    Name=Pixlit
+    Comment=Convert images between HEIC, JPEG, PNG, and WebP
+    Exec=pixlit
+    Icon=pixlit
+    Terminal=false
+    Type=Application
+    Categories=Graphics;Photography;
+    MimeType=image/heic;image/heif;image/jpeg;image/png;image/webp;
+    StartupNotify=true
+    EOF
+
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "Image converter supporting HEIC, JPEG, PNG, and WebP";
+    license     = licenses.mit;
+    platforms   = platforms.linux;
+    mainProgram = "pixlit";
+    maintainers = [];
+  };
+}