Use lib.makeScope for consistent package resolution

nix/gradle2nix.nix

@@ -0,0 +1,51 @@
+{
+  lib,
+  buildGradlePackage,
+  buildMavenRepo,
+  gradle,
+  gradleSetupHook,
+}:
+
+buildGradlePackage {
+  pname = "gradle2nix";
+  version = "2.0.0";
+  lockFile = ../gradle.lock;
+
+  src = lib.cleanSourceWith {
+    filter = lib.cleanSourceFilter;
+    src = lib.cleanSourceWith {
+      filter =
+        path: type:
+        let
+          baseName = baseNameOf path;
+        in
+        !(
+          (type == "directory" && (baseName == "build" || baseName == ".idea" || baseName == ".gradle"))
+          || (lib.hasSuffix ".iml" baseName)
+        );
+      src = ../.;
+    };
+  };
+
+  gradleInstallFlags = [ ":app:installDist" ];
+
+  postInstall = ''
+    mkdir -p $out/{bin,/lib/gradle2nix}
+    cp -r app/build/install/gradle2nix/* $out/lib/gradle2nix/
+    rm $out/lib/gradle2nix/bin/gradle2nix.bat
+    ln -sf $out/lib/gradle2nix/bin/gradle2nix $out/bin
+  '';
+
+  passthru = {
+    inherit buildGradlePackage buildMavenRepo gradleSetupHook;
+  };
+
+  meta = with lib; {
+    inherit (gradle.meta) platforms;
+    description = "Wrap Gradle builds with Nix";
+    homepage = "https://github.com/tadfisher/gradle2nix";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ tadfisher ];
+    mainProgram = "gradle2nix";
+  };
+}