grails: new package

Grails is an Open Source, full stack, web application framework for the
JVM. It takes advantage of the Groovy programming language and
convention over configuration to provide a productive and stream-lined
development experience.

http://grails.org/

pkgs/development/web/grails/default.nix

@@ -0,0 +1,52 @@
+{ stdenv, fetchurl, unzip
+# If jdkPath is null, require JAVA_HOME in runtime environment, else store
+# JAVA_HOME=${jdkPath} into grails.
+, jdkPath ? null
+, coreutils, ncurses, gnused, gnugrep  # for purity
+}:
+
+let
+  binpath = stdenv.lib.makeSearchPath "bin"
+    ([ coreutils ncurses gnused gnugrep ]
+    ++ stdenv.lib.optional (jdkPath != null) jdkPath);
+in
+stdenv.mkDerivation rec {
+  name = "grails-2.4.3";
+
+  src = fetchurl {
+    url = "http://dist.springframework.org.s3.amazonaws.com/release/GRAILS/${name}.zip";
+    sha256 = "0lqkv0hsiiqa36pfnq5wv7s7nsp9xadmh1ri039bn0llpfck4742";
+  };
+
+  buildInputs = [ unzip ];
+
+  buildPhase = "true";
+
+  installPhase = ''
+    mkdir -p "$out"
+    cp -vr . "$out"
+    # Remove (for now) uneeded Windows .bat files
+    rm -f "$out"/bin/*.bat
+    # Improve purity
+    sed -i -e '2iPATH=${binpath}:\$PATH' "$out"/bin/grails
+  '' + stdenv.lib.optionalString (jdkPath != null) ''
+    # Inject JDK path into grails
+    sed -i -e '2iJAVA_HOME=${jdkPath}' "$out"/bin/grails
+  '';
+
+  preferLocalBuild = true;
+
+  meta = with stdenv.lib; {
+    description = "Full stack, web application framework for the JVM";
+    longDescription = ''
+      Grails is an Open Source, full stack, web application framework for the
+      JVM. It takes advantage of the Groovy programming language and convention
+      over configuration to provide a productive and stream-lined development
+      experience.
+    '';
+    homepage = http://grails.org/;
+    license = licenses.asl20;
+    platforms = platforms.linux;
+    maintainers = [ maintainers.bjornfor ];
+  };
+}

pkgs/top-level/all-packages.nix

@@ -1240,6 +1240,10 @@ let
 
   grafx2 = callPackage ../applications/graphics/grafx2 {};
 
+  grails = callPackage ../development/web/grails {
+    jdkPath = "${openjdk}/lib/openjdk";
+  };
+
   graphviz = callPackage ../tools/graphics/graphviz { };
 
   /* Readded by Michael Raskin. There are programs in the wild