Feat: Nix Flake install method with ci (#146)

.github/workflows/nix.yml

@@ -0,0 +1,38 @@
+name: Nix
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  id-token: write
+
+concurrency:
+  group: nix-${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: DeterminateSystems/nix-installer-action@main
+
+      - uses: DeterminateSystems/magic-nix-cache-action@main
+
+      - name: Build package
+        run: nix build .#default --print-build-logs
+
+      - name: Flake check
+        run: nix flake check --print-build-logs
+
+      - name: Verify outputs
+        run: |
+          test -x ./result/bin/emerald-legacy-launcher
+          nix path-info -Sh ./result
+          ls -la ./result/bin/
+          ls -la ./result/share/applications/ || true

.gitignore

@@ -24,6 +24,10 @@
 .DS_Store
 Thumbs.db
 
+# Nix
+/result
+/result-*
+
 # Log files
 *.log
 

README.md

@@ -108,6 +108,7 @@ Multiple distribution formats available:
 | `.rpm` | RHEL, Fedora, openSUSE |
 | `.AppImage` | Universal (no installation required) |
 | `.flatpak` | Universal with sandboxing (recommended over AppImage) |
+| Nix flake | NixOS and any Linux with [Nix](https://nixos.org/download/) installed |
 
 **AUR:**
 Special thanks to [AntiApple4life](https://aur.archlinux.org/packages?O=0&SeB=m&K=AntiApple4life) for the AUR packages!
@@ -122,6 +123,18 @@ paru -S emerald-legacy-launcher # or yay
 paru -S emerald-legacy-launcher-bin # or yay
 ```
 
+**Nix:**
+Requires [Nix](https://nixos.org/download/) with flakes enabled (`experimental-features = nix-command flakes` in `nix.conf`).
+```bash
+# Run without installing
+nix run github:LCE-Hub/LCE-Emerald-Launcher
+
+# Install to your user profile
+nix profile install github:LCE-Hub/LCE-Emerald-Launcher
+```
+
+On NixOS, add the flake as an input and install `packages.<system>.default` (or `emerald-legacy-launcher`) from it.
+
 **Flatpak Installation:**
 ```bash
 flatpak install emerald.flatpak

flake.lock

@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1784120854,
+        "narHash": "sha256-KesHgItiZPgGX740axSiQLcIQ8D24MDqNpkKYWIek8k=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "753cc8a3a87467296ddd1fa93f0cc3e81120ee46",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,83 @@
+{
+  description = "LCE Emerald Launcher — FOSS cross-platform launcher for Minecraft Legacy Console Edition";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+  };
+
+  outputs =
+    { self, nixpkgs }:
+    let
+      inherit (nixpkgs) lib;
+      systems = [
+        "x86_64-linux"
+        "aarch64-linux"
+        "x86_64-darwin"
+        "aarch64-darwin"
+      ];
+      forAllSystems = lib.genAttrs systems;
+      pkgsFor =
+        system:
+        import nixpkgs {
+          inherit system;
+          overlays = [ self.overlays.default ];
+        };
+    in
+    {
+      overlays.default = final: _prev: {
+        emerald-legacy-launcher = final.callPackage ./nix/package.nix {
+          src = self;
+        };
+      };
+
+      packages = forAllSystems (
+        system:
+        let
+          pkgs = pkgsFor system;
+        in
+        {
+          default = pkgs.emerald-legacy-launcher;
+          emerald-legacy-launcher = pkgs.emerald-legacy-launcher;
+        }
+      );
+
+      apps = forAllSystems (system: {
+        default = {
+          type = "app";
+          program = lib.getExe self.packages.${system}.default;
+        };
+      });
+
+      checks = forAllSystems (system: {
+        package = self.packages.${system}.default;
+      });
+
+      devShells = forAllSystems (
+        system:
+        let
+          pkgs = pkgsFor system;
+        in
+        {
+          default = pkgs.mkShell {
+            inputsFrom = [ pkgs.emerald-legacy-launcher ];
+            packages = with pkgs; [
+              cargo
+              rustc
+              rustfmt
+              clippy
+              cargo-tauri
+              nodejs
+              pnpm_10
+              pkg-config
+            ];
+            shellHook = ''
+              echo "Emerald Legacy Launcher dev shell"
+              echo "  pnpm install && pnpm tauri dev"
+            '';
+          };
+        }
+      );
+
+      formatter = forAllSystems (system: (pkgsFor system).nixfmt);
+    };
+}

nix/package.nix

@@ -0,0 +1,131 @@
+{
+  lib,
+  stdenv,
+  rustPlatform,
+  cargo-tauri,
+  nodejs,
+  pkg-config,
+  pnpm_10,
+  fetchPnpmDeps,
+  pnpmConfigHook,
+  wrapGAppsHook4,
+  openssl,
+  webkitgtk_4_1,
+  glib-networking,
+  libayatana-appindicator,
+  librsvg,
+  udev,
+  src ? null,
+}:
+
+# Disable updater artifact signing — Nix builds have no Tauri signing key.
+let
+  tauriConfOverride = builtins.toFile "tauri-nix.conf.json" ''
+    {
+      "bundle": {
+        "createUpdaterArtifacts": false
+      }
+    }
+  '';
+
+  defaultSrc = lib.cleanSourceWith {
+    src = ../.;
+    filter =
+      path: _type:
+      let
+        baseName = baseNameOf path;
+      in
+      !(builtins.elem baseName [
+        ".git"
+        "node_modules"
+        "target"
+        "dist"
+        "build-flatpak"
+        "emerald-repo"
+        "result"
+        "result-dev"
+      ]);
+  };
+in
+rustPlatform.buildRustPackage (finalAttrs: {
+  pname = "emerald-legacy-launcher";
+  version = "1.5.1";
+
+  src = if src != null then src else defaultSrc;
+
+  cargoRoot = "src-tauri";
+  buildAndTestSubdir = finalAttrs.cargoRoot;
+
+  cargoHash = "sha256-tSbFyle2eQ5Dw9fTXloIepOZU1UxhkF6/KZBRXehm4w=";
+
+  pnpmDeps = fetchPnpmDeps {
+    inherit (finalAttrs) pname version src;
+    pnpm = pnpm_10;
+    fetcherVersion = 3;
+    hash = "sha256-6na8YlSTkdnSse8DQjBnTBpfmKSYj3+1FLWVyyfUx1g=";
+  };
+
+  nativeBuildInputs = [
+    cargo-tauri.hook
+    nodejs
+    pkg-config
+    pnpmConfigHook
+    pnpm_10
+  ]
+  ++ lib.optionals stdenv.hostPlatform.isLinux [ wrapGAppsHook4 ];
+
+  buildInputs = [
+    openssl
+  ]
+  ++ lib.optionals stdenv.hostPlatform.isLinux [
+    glib-networking
+    libayatana-appindicator
+    librsvg
+    udev
+    webkitgtk_4_1
+  ];
+
+  tauriBuildFlags = [
+    "-c"
+    tauriConfOverride
+  ];
+
+  postPatch = lib.optionalString stdenv.hostPlatform.isLinux ''
+    substituteInPlace "$cargoDepsCopy"/*/libappindicator-sys-*/src/lib.rs \
+      --replace-fail "libayatana-appindicator3.so.1" \
+      "${libayatana-appindicator}/lib/libayatana-appindicator3.so.1"
+  '';
+
+  # Prefer the project's pnpm frontend build over the npm beforeBuildCommand.
+  preBuild = ''
+    substituteInPlace src-tauri/tauri.conf.json \
+      --replace-fail '"beforeBuildCommand": "npm run build"' \
+      '"beforeBuildCommand": "pnpm run build"'
+  '';
+
+  preFixup = lib.optionalString stdenv.hostPlatform.isLinux ''
+    gappsWrapperArgs+=(
+      --prefix LD_LIBRARY_PATH : ${
+        lib.makeLibraryPath [
+          libayatana-appindicator
+          udev
+        ]
+      }
+    )
+  '';
+
+  doCheck = false;
+
+  env = {
+    CI = "true";
+  };
+
+  meta = {
+    description = "FOSS cross-platform launcher for Minecraft Legacy Console Edition";
+    homepage = "https://github.com/LCE-Hub/LCE-Emerald-Launcher";
+    license = lib.licenses.gpl3Only;
+    mainProgram = "emerald-legacy-launcher";
+    platforms = lib.platforms.linux ++ lib.platforms.darwin;
+    maintainers = [ ];
+  };
+})