gradle: refactor

pkgs/development/tools/build-managers/gradle/default.nix

@@ -1,39 +1,54 @@
 { stdenv, fetchurl, unzip, jdk, makeWrapper }:
 
-stdenv.mkDerivation rec {
-  name = "gradle-2.8";
+rec {
+  gradleGen = {name, src} : stdenv.mkDerivation rec {
+    inherit name src;
 
-  src = fetchurl {
-    url = "http://services.gradle.org/distributions/${name}-bin.zip";
-    sha256 = "1jq3m6ihvcxyp37mwsg3i8li9hd6rpv8ri8ih2mgvph4y71bk3d8";
+    installPhase = ''
+      mkdir -pv $out/lib/gradle/
+      cp -rv lib/ $out/lib/gradle/
+
+      gradle_launcher_jar=$(echo $out/gradle/lib/gradle-launcher-*.jar)
+      test -f $gradle_launcher_jar
+      makeWrapper ${jdk}/bin/java $out/bin/gradle \
+        --set JAVA_HOME ${jdk} \
+        --add-flags "-classpath $gradle_launcher_jar org.gradle.launcher.GradleMain"
+    '';
+
+    phases = "unpackPhase installPhase";
+
+    buildInputs = [ unzip jdk makeWrapper ];
+
+    meta = {
+      description = "Enterprise-grade build system";
+      longDescription = ''
+        Gradle is a build system which offers you ease, power and freedom.
+        You can choose the balance for yourself. It has powerful multi-project
+        build support. It has a layer on top of Ivy that provides a
+        build-by-convention integration for Ivy. It gives you always the choice
+        between the flexibility of Ant and the convenience of a
+        build-by-convention behavior.
+      '';
+      homepage = http://www.gradle.org/;
+      license = stdenv.lib.licenses.asl20;
+    };
   };
 
-  installPhase = ''
-    mkdir -pv $out/gradle
-    cp -rv lib $out/gradle
+  gradle28 = gradleGen rec {
+    name = "gradle-2.8";
 
-    gradle_launcher_jar=$(echo $out/gradle/lib/gradle-launcher-*.jar)
-    test -f $gradle_launcher_jar
-    makeWrapper ${jdk}/bin/java $out/bin/gradle \
-      --set JAVA_HOME ${jdk} \
-      --add-flags "-classpath $gradle_launcher_jar org.gradle.launcher.GradleMain"
-  '';
+    src = fetchurl {
+      url = "http://services.gradle.org/distributions/${name}-bin.zip";
+      sha256 = "1jq3m6ihvcxyp37mwsg3i8li9hd6rpv8ri8ih2mgvph4y71bk3d8";
+    };
+  };
 
-  phases = "unpackPhase installPhase";
+  gradle25 = gradleGen rec {
+    name = "gradle-2.5";
 
-  buildInputs = [ unzip jdk makeWrapper ];
-
-  meta = {
-    description = "Enterprise-grade build system";
-    longDescription = ''
-      Gradle is a build system which offers you ease, power and freedom.
-      You can choose the balance for yourself. It has powerful multi-project
-      build support. It has a layer on top of Ivy that provides a 
-      build-by-convention integration for Ivy. It gives you always the choice
-      between the flexibility of Ant and the convenience of a 
-      build-by-convention behavior.
-    '';
-    homepage = http://www.gradle.org/;
-    license = stdenv.lib.licenses.asl20;
+    src = fetchurl {
+      url = "http://services.gradle.org/distributions/${name}-bin.zip";
+      sha256 = "0mc5lf6phkncx77r0papzmfvyiqm0y26x50ipvmzkcsbn463x59z";
+    };
   };
 }

pkgs/top-level/all-packages.nix

@@ -5648,9 +5648,9 @@ let
 
   gotty = goPackages.gotty.bin // { outputs = [ "bin" ]; };
 
-  gradle = callPackage ../development/tools/build-managers/gradle { };
-
-  gradle25 = callPackage ../development/tools/build-managers/gradle/2.5.nix { };
+  gradleGen = callPackage ../development/tools/build-managers/gradle { };
+  gradle = self.gradleGen.gradle28;
+  gradle25 = self.gradleGen.gradle25;
 
   gperf = callPackage ../development/tools/misc/gperf { };