Create BASE engine Nix derivation

.gitignore

@@ -139,3 +139,13 @@ gradle-app.setting
 
 # BASE sample data
 **/resources/project/
+
+# Gradle cache
+gcache/
+util/gradle
+util/gradlew*
+
+
+# Nix files
+result
+.direnv

base-editor.desktop

@@ -0,0 +1,9 @@
+[Desktop Entry]
+Categories=Game;Development
+Comment=Game designer for BASE engine
+Exec=base-editor
+Icon=base-editor
+Name=BASE Editor
+Terminal=false
+Type=Application
+Version=1.4

editor.nix

@@ -0,0 +1,44 @@
+{
+  pkgs,
+  gradle2nix,
+  system,
+  ...
+}:
+gradle2nix.builders.${system}.buildGradlePackage {
+  pname = "base-editor";
+  version = "0.0.1";
+
+  src = ./.;
+  lockFile = ./gradle.lock;
+
+  gradle = pkgs.gradle_7;
+
+  gradleBuildFlags = [":editor:bootJar"];
+
+  buildJdk = pkgs.jdk17;
+  nativeBuildInputs = [pkgs.desktop-file-utils pkgs.makeWrapper];
+
+  PROTOBUF_EXECUTABLE = "${pkgs.protobuf_21}/bin/protoc";
+
+  enableParallelBuilding = true;
+
+  installPhase = with pkgs; ''
+    mkdir -p  $out/bin                                  \
+              $out/share/java/                          \
+              $out/share/icons/hicolor/256x256/apps/    \
+              $out/share/applications/
+
+    cp editor/build/libs/editor.jar $out/share/java/base-editor.jar
+    cp $src/icon.png $out/share/icons/hicolor/256x256/apps/base-editor.png
+    cp $src/base-editor.desktop $out/share/applications/base-editor.desktop
+
+    makeWrapper "${jdk17}/bin/java" $out/bin/base-editor   \
+      --add-flags "-jar $out/share/java/base-editor.jar"   \
+      --prefix LD_LIBRARY_PATH : "${xorg.libXtst}/lib"     \
+      --prefix LD_LIBRARY_PATH : "${openjfx17}/lib"        \
+      --prefix LD_LIBRARY_PATH : "${glib.out}/lib"         \
+      --prefix LD_LIBRARY_PATH : "${alsa-lib}/lib"         \
+      --prefix LD_LIBRARY_PATH : "${libGL}/lib"            \
+      --prefix LD_LIBRARY_PATH : "${gtk3}/lib"
+  '';
+}

flake.lock

@@ -1,25 +1,83 @@
 {
   "nodes": {
-    "nixpkgs": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
       "locked": {
-        "lastModified": 1701952659,
-        "narHash": "sha256-TJv2srXt6fYPUjxgLAL0cy4nuf1OZD4KuA1TrCiQqg0=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "b4372c4924d9182034066c823df76d6eaf1f4ec4",
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
         "type": "github"
       },
       "original": {
-        "owner": "NixOS",
-        "ref": "nixos-23.11",
-        "repo": "nixpkgs",
+        "owner": "numtide",
+        "repo": "flake-utils",
         "type": "github"
       }
     },
+    "gradle2nix": {
+      "inputs": {
+        "flake-utils": [
+          "flake-utils"
+        ],
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1743629487,
+        "narHash": "sha256-MjnEgT9MhO2HknLhrx7GvBRVxdOzSKydIJMyzawe2Fk=",
+        "owner": "tadfisher",
+        "repo": "gradle2nix",
+        "rev": "293ecbdc10d32d9d4bdc2d23213b9be09ce247ee",
+        "type": "github"
+      },
+      "original": {
+        "owner": "tadfisher",
+        "ref": "v2",
+        "repo": "gradle2nix",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1751943650,
+        "narHash": "sha256-7orTnNqkGGru8Je6Un6mq1T8YVVU/O5kyW4+f9C1mZQ=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "88983d4b665fb491861005137ce2b11a9f89f203",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-25.05",
+        "type": "indirect"
+      }
+    },
     "root": {
       "inputs": {
+        "flake-utils": "flake-utils",
+        "gradle2nix": "gradle2nix",
         "nixpkgs": "nixpkgs"
       }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
     }
   },
   "root": "root",

flake.nix

@@ -1,42 +1,28 @@
 {
-  description = "BASE engine";
+  description = "The BASE engine";
 
   inputs = {
-    nixpkgs.url = github:NixOS/nixpkgs/nixos-23.11;
+    nixpkgs.url = "nixpkgs/nixos-25.05";
+
+    flake-utils.url = "github:numtide/flake-utils";
+
+    gradle2nix.url = "github:tadfisher/gradle2nix/v2";
+    gradle2nix.inputs.nixpkgs.follows = "nixpkgs";
+    gradle2nix.inputs.flake-utils.follows = "flake-utils";
   };
 
-  outputs = { self, nixpkgs }:
-  let
-    pkgs = import nixpkgs { inherit system; };
-    system = "x86_64-linux";
-    opengl = "/run/opengl-driver";
-  in {
-    devShells.${system}.default = with pkgs; mkShell {
-      name = "base-editor";
-
-      buildInputs = [
-        xorg.libXtst
-        alsa-lib
-        gradle_7
-        jdk17
-        protobuf
-      ];
-
-      shellHook = ''
-        echo
-        echo
-        echo "======================================================================================================"
-        echo "Welcome to BASE NixOS flake shell environment"
-        echo "Remember to provide following LD environment variable in order to run application outside this shell:"
-        echo
-        echo "LD_LIBRARY_PATH=$LD_LIBRARY_PATH"
-        echo "======================================================================================================"
-        echo
-        echo
-      '';
-
-      LD_LIBRARY_PATH = "${opengl}/lib:${xorg.libXtst}/lib:${alsa-lib}/lib";
-      PROTOBUF_EXECUTABLE = "${protobuf}/bin/protoc";
-    };
-  };
+  outputs = inputs @ {
+    self,
+    nixpkgs,
+    flake-utils,
+    ...
+  }:
+    flake-utils.lib.eachDefaultSystem (system: let
+      pkgs = import nixpkgs {inherit system;};
+    in {
+      packages = rec {
+        base = pkgs.callPackage ./editor.nix (inputs // {inherit system;});
+        default = base;
+      };
+    });
 }