sly: init at 0.4.0 (#347183)

Author: Aleksanaa

pkgs/by-name/sl/sly/package.nix

@@ -0,0 +1,34 @@
+{
+  lib,
+  fetchFromGitHub,
+  flutter,
+}:
+let
+  version = "0.4.0";
+  src = fetchFromGitHub {
+    owner = "kra-mo";
+    repo = "sly";
+    rev = "v${version}";
+    hash = "sha256-P7LhhXQQDRsDQ8bZgfvWazLRMYVGhFhMTD41fgs718g=";
+  };
+in
+flutter.buildFlutterApplication {
+  pname = "sly";
+  inherit version src;
+
+  pubspecLock = lib.importJSON ./pubspec.lock.json;
+
+  postInstall = ''
+    install -Dm0644 ./packaging/linux/page.kramo.Sly.svg $out/share/icons/hicolor/scalable/apps/page.kramo.Sly.svg
+    install -Dm0644 ./packaging/linux/page.kramo.Sly.desktop $out/share/applications/page.kramo.Sly.desktop
+  '';
+
+  meta = {
+    description = "Friendly image editor";
+    homepage = "https://github.com/kra-mo/sly";
+    mainProgram = "sly";
+    license = with lib.licenses; [ gpl3Plus ];
+    maintainers = with lib.maintainers; [ aucub ];
+    platforms = lib.platforms.linux;
+  };
+}