feat: add nix flake

Adds Nix flake that provides a devshell and package. flutter version dropped to 3.22.0 in pubspec.yaml to match what Nixpkgs 24.05 provides.

.envrc

@@ -0,0 +1,9 @@
+use flake
+flutter pub get
+flutter config --enable-linux-desktop
+dart pub global activate flutter_distributor
+echo "**********************************************************************"
+echo "* flutter build linux --release                                      *"
+echo "* flutter_distributor package --platform=linux --targets=zip         *"
+echo "* yq eval pubspec.lock -o=json -P > pubspec.lock.json                *"
+echo "**********************************************************************"

.gitignore

@@ -2,6 +2,7 @@
 
 # Files and directories created by pub
 .dart_tool/
+.direnv/
 .packages
 build/
 dist/

devshell.nix

@@ -0,0 +1,56 @@
+# https://manuelplavsic.ch/articles/flutter-environment-with-nix/
+{
+  lib,
+  mkShell,
+  pkgs,
+  stdenv,
+  appimagekit,
+  clang,
+  cmake,
+  dart,
+  dpkg,
+  flutter,
+  git,
+  gnome,
+  gtk3,
+  ninja,
+  patchelf,
+  pcre2,
+  plocate,
+  pkg-config,
+  quickemu,
+  rpm,
+}:
+mkShell rec {
+  FLUTTER_ROOT = flutter;
+  DART_ROOT = "${flutter}/bin/cache/dart-sdk";
+  buildInputs = [
+    appimagekit
+    clang
+    cmake
+    dart
+    dpkg
+    flutter
+    git
+    gnome.zenity
+    gtk3
+    ninja
+    patchelf
+    pcre2
+    plocate
+    pkg-config
+    quickemu
+    rpm
+  ];
+  # vulkan-loader and libGL shared libs are necessary for hardware decoding
+  LD_LIBRARY_PATH = "${pkgs.lib.makeLibraryPath [ pkgs.vulkan-loader pkgs.libGL ]}";
+  # Packages installed via `dart pub global activate package_name` are
+  # located in the `$PUB_CACHE/bin` directory.
+  shellHook = ''
+    if [ -z "$PUB_CACHE" ]; then
+      export PATH="$PATH":"$HOME/.pub-cache/bin"
+    else
+      export PATH="$PATH":"$PUB_CACHE/bin"
+    fi
+  '';
+}

flake.lock

@@ -0,0 +1,40 @@
+{
+  "nodes": {
+    "flake-schemas": {
+      "locked": {
+        "lastModified": 1697467827,
+        "narHash": "sha256-j8SR19V1SRysyJwpOBF4TLuAvAjF5t+gMiboN4gYQDU=",
+        "rev": "764932025c817d4e500a8d2a4d8c565563923d29",
+        "revCount": 29,
+        "type": "tarball",
+        "url": "https://api.flakehub.com/f/pinned/DeterminateSystems/flake-schemas/0.1.2/018b3da8-4cc3-7fbb-8ff7-1588413c53e2/source.tar.gz"
+      },
+      "original": {
+        "type": "tarball",
+        "url": "https://flakehub.com/f/DeterminateSystems/flake-schemas/%2A.tar.gz"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1719254875,
+        "narHash": "sha256-ECni+IkwXjusHsm9Sexdtq8weAq/yUyt1TWIemXt3Ko=",
+        "rev": "2893f56de08021cffd9b6b6dfc70fd9ccd51eb60",
+        "revCount": 643242,
+        "type": "tarball",
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.643242%2Brev-2893f56de08021cffd9b6b6dfc70fd9ccd51eb60/0190530b-f61b-7788-9601-b336b1caf671/source.tar.gz"
+      },
+      "original": {
+        "type": "tarball",
+        "url": "https://flakehub.com/f/NixOS/nixpkgs/0.1.%2A.tar.gz"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-schemas": "flake-schemas",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,38 @@
+{
+  description = "Quickemu flake";
+  inputs = {
+    flake-schemas.url = "https://flakehub.com/f/DeterminateSystems/flake-schemas/*.tar.gz";
+    nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1.*.tar.gz";
+  };
+
+  outputs = {
+    self,
+    flake-schemas,
+    nixpkgs,
+  }: let
+    forAllSystems = function:
+      nixpkgs.lib.genAttrs [
+        "x86_64-linux"
+        # TODO: Enable when upstream supports these platforms
+        #"aarch64-linux"
+        #"x86_64-darwin"
+        #"aarch64-darwin"
+      ] (system: function nixpkgs.legacyPackages.${system});
+  in {
+    # Schemas tell Nix about the structure of your flake's outputs
+    schemas = flake-schemas.schemas;
+
+    overlays.default = final: prev: {
+      quickgui = final.callPackage ./package.nix {};
+    };
+
+    packages = forAllSystems (pkgs: rec {
+      quickgui = pkgs.callPackage ./package.nix {};
+      default = quickgui;
+    });
+
+    devShells = forAllSystems (pkgs: {
+      default = pkgs.callPackage ./devshell.nix {};
+    });
+  };
+}

package.nix

@@ -0,0 +1,64 @@
+{ fetchFromGitHub
+, makeDesktopItem
+, copyDesktopItems
+, lib
+, flutter
+, gnome
+, quickemu
+}:
+let
+  runtimeBinDependencies = [ gnome.zenity ];
+  versionMatches =
+    builtins.match ''
+      .*
+      version:[[:blank:]]"([[:digit:]]+\.[[:digit:]]+\.[[:digit:]]+)"
+      .*
+    '' (builtins.readFile ./pubspec.yaml);
+in
+flutter.buildFlutterApplication rec {
+  pname = "quickgui";
+  version = builtins.concatStringsSep "" versionMatches;
+  src = fetchFromGitHub {
+    owner = "quickemu-project";
+    repo = "quickgui";
+    #rev = version;
+    rev = "d4893b5d2cb2e7ef271e4c2d66683e30d70352e2";
+    hash = "sha256-V9wSENva/5Khqzor+Umj7BooWecDqn91Bj+waDMMPyY=";
+  };
+  pubspecLock = lib.importJSON ./pubspec.lock.json;
+
+  gitHashes = {
+    window_size = "sha256-mn1UFA4Vqh3f5MqlTy9LueWr6qvCOHLujVoEQi0KMNw=";
+  };
+
+  # These things are added to LD_LIBRARY_PATH, but not PATH
+  runtimeDependencies = [ quickemu ];
+  extraWrapProgramArgs = "--prefix PATH : ${lib.makeBinPath runtimeBinDependencies}";
+
+  nativeBuildInputs = [ copyDesktopItems ];
+
+  postFixup = ''
+    mkdir -p $out/share/pixmaps
+    cp $out/app/data/flutter_assets/assets/images/logo_pink.png $out/share/pixmaps/quickemu.png
+  '';
+
+  desktopItems = [
+    (makeDesktopItem {
+      name = "quickgui";
+      exec = "quickgui";
+      icon = "quickgui";
+      desktopName = "Quickgui";
+      categories = [ "Development" "System" ];
+    })
+  ];
+
+  meta = with lib; {
+    description = "Flutter frontend for quickemu";
+    homepage = "https://github.com/quickemu-project/quickgui";
+    changelog = "https://github.com/quickemu-project/quickgui/releases/";
+    license = licenses.mit;
+    maintainers = with maintainers; [ flexiondotorg heyimnova ];
+    platforms = [ "x86_64-linux" ];
+    mainProgram = "quickgui";
+  };
+}

pubspec.yaml

@@ -5,7 +5,7 @@ version: 1.2.8+1
 
 environment:
   sdk: ">=3.2.0 <4.0.0"
-  flutter: "3.22.2"
+  flutter: "3.22.0"
 
 dependencies:
   flutter: