ggz_base_libs: reimplement using mkDerivation

pkgs/development/libraries/ggz_base_libs/default.nix

@@ -1,53 +1,30 @@
-x@{builderDefsPackage
-  , intltool, openssl, expat, libgcrypt
-  , ...}:
-builderDefsPackage
-(a :  
-let 
-  helperArgNames = ["stdenv" "fetchurl" "builderDefsPackage"] ++ 
-    [];
+{ stdenv, fetchurl, intltool, openssl, expat, libgcrypt }:
 
-  buildInputs = map (n: builtins.getAttr n x)
-    (builtins.attrNames (builtins.removeAttrs x helperArgNames));
-  sourceInfo = rec {
-    baseName="ggz-base-libs";
-    version="0.99.5";
-    name="${baseName}-snapshot-${version}";
-    url="http://mirrors.ibiblio.org/pub/mirrors/ggzgamingzone/ggz/snapshots/${name}.tar.gz";
-    hash="1cw1vg0fbj36zyggnzidx9cbjwfc1yr4zqmsipxnvns7xa2awbdk";
-  };
-in
-rec {
-  src = a.fetchurl {
-    url = sourceInfo.url;
-    sha256 = sourceInfo.hash;
+stdenv.mkDerivation rec {
+  version = "0.99.5";
+  baseName = "ggz-base-libs";
+  name = "${baseName}-snapshot-${version}";
+
+  src = fetchurl {
+    url = "http://mirrors.ibiblio.org/pub/mirrors/ggzgamingzone/ggz/snapshots/${name}.tar.gz";
+    sha256 = "1cw1vg0fbj36zyggnzidx9cbjwfc1yr4zqmsipxnvns7xa2awbdk";
   };
 
-  inherit (sourceInfo) name version;
-  inherit buildInputs;
-
-  /* doConfigure should be removed if not needed */
-  phaseNames = ["doConfigure" "doMakeInstall"];
+  buildInputs = [ intltool openssl expat libgcrypt ];
 
   configureFlags = [
-    "--with-ssl-dir=${a.openssl}/"
+    "--with-ssl-dir=${openssl}/"
     "--with-tls"
   ];
 
-  meta = {
+  meta = with stdenv.lib; {
     description = "GGZ Gaming zone libraries";
-    maintainers = with a.lib.maintainers;
+    maintainers = with maintainers;
     [
       raskin
     ];
-    platforms = with a.lib.platforms;
-      linux;
-    license = a.lib.licenses.gpl2;
+    platforms = platforms.linux;
+    license = licenses.gpl2;
+    downloadPage = "http://www.ggzgamingzone.org/releases/";
   };
-  passthru = {
-    updateInfo = {
-      downloadPage = "http://www.ggzgamingzone.org/releases/";
-    };
-  };
-}) x
-
+}