java: Add home passthru

pkgs/development/compilers/icedtea/default.nix

@@ -34,9 +34,7 @@ let
   bundleFun = name: "--with-${name}-src-zip=" + builtins.getAttr name sources;
   bundleFlags = map bundleFun bundleNames;
 
-in
-
-with srcInfo; stdenv.mkDerivation {
+  icedtea = stdenv.mkDerivation (with srcInfo; {
     name = pkgName;
 
     src = fetchurl {
@@ -176,5 +174,9 @@ with srcInfo; stdenv.mkDerivation {
       platforms = stdenv.lib.platforms.linux;
     };
 
-  passthru = { inherit architecture; };
-}
+    passthru = {
+      inherit architecture;
+      home = "${icedtea}/lib/icedtea";
+    };
+  });
+in icedtea

pkgs/development/compilers/openjdk-darwin/default.nix

@@ -31,7 +31,7 @@ let
       EOF
     '';
 
-    passthru.jre = jdk;
+    passthru = { jre = jdk; };
 
   };
 in jdk

pkgs/development/compilers/openjdk/default.nix

@@ -27,9 +27,7 @@ let
     md5 = "de3006e5cf1ee78a9c6145ce62c4e982";
   };
 
-in
-
-stdenv.mkDerivation rec {
+  openjdk = stdenv.mkDerivation rec {
     name = "openjdk-7u${update}b${build}";
 
     src = fetchurl {
@@ -177,5 +175,9 @@ stdenv.mkDerivation rec {
       platforms = stdenv.lib.platforms.linux;
     };
 
-  passthru = { inherit architecture; };
-}
+    passthru = {
+      inherit architecture;
+      home = "${openjdk}/lib/openjdk";
+    };
+  };
+in openjdk

pkgs/development/compilers/oraclejdk/jdk-linux-base.nix

@@ -180,6 +180,8 @@ let result = stdenv.mkDerivation rec {
 
   passthru.jre = result; # FIXME: use multiple outputs or return actual JRE package
 
+  passthru.home = result;
+
   meta.license = stdenv.lib.licenses.unfree;
 
 }; in result