diff --git a/pkgs/development/interpreters/j/default.nix b/pkgs/development/interpreters/j/default.nix
index 3668fedf0518..4c064a42ebf8 100644
--- a/pkgs/development/interpreters/j/default.nix
+++ b/pkgs/development/interpreters/j/default.nix
@@ -1,42 +1,16 @@
-x@{builderDefsPackage
-  , readline
-  , ...}:
-builderDefsPackage
-(a :  
-let 
-  helperArgNames = ["stdenv" "fetchurl" "builderDefsPackage"] ++ 
-    [];
+{ stdenv, fetchurl, readline }:
 
-  buildInputs = map (n: builtins.getAttr n x)
-    (builtins.attrNames (builtins.removeAttrs x helperArgNames));
-  sourceInfo = rec {
-    baseName="j";
-    version="701_b";
-    name="${baseName}-${version}";
-    url="http://www.jsoftware.com/download/${baseName}${version}_source.tar.gz";
-    hash="1gmjlpxcd647x690c4dxnf8h6ays8ndir6cib70h3zfnkrc34cys";
-  };
-in
-rec {
-  src = a.fetchurl {
-    url = sourceInfo.url;
-    sha256 = sourceInfo.hash;
+stdenv.mkDerivation rec {
+  name = "j-${version}";
+  version = "701_b";
+  src = fetchurl {
+    url = "http://www.jsoftware.com/download/j${version}_source.tar.gz";
+    sha256 = "1gmjlpxcd647x690c4dxnf8h6ays8ndir6cib70h3zfnkrc34cys";
   };
+  buildInputs = [ readline ];
+  bits = if stdenv.is64bit then "64" else "32";
 
-  inherit (sourceInfo) name version;
-  inherit buildInputs;
-
-  /* doConfigure should be removed if not needed */
-  phaseNames = ["doUnpack" "doBuildJ" "doDeploy"];
-
-  bits = if a.stdenv.is64bit then
-    "64"
-  else if a.stdenv.isi686 then
-    "32"
-  else
-    builtins.trace "assuming ${a.stdenv.system} is 32 bits" "32";
-
-  doBuildJ = a.fullDepEntry ''
+  buildPhase = ''
     sed -i bin/jconfig -e '
         s@bits=32@bits=${bits}@g;
         s@readline=0@readline=1@;
@@ -51,36 +25,28 @@ rec {
     sh -o errexit bin/build_defs
     sh -o errexit bin/build_tsdll
 
-    sed -i j/bin/profile.ijs -e "s@userx=[.] *'.j'@userx=. '/.j'@; 
+    sed -i j/bin/profile.ijs -e "
+        s@userx=[.] *'.j'@userx=. '/.j'@;
         s@bin,'/profilex.ijs'@user,'/profilex.ijs'@ ;
 	/install=./ainstall=. install,'/share/j'
-	"
-  '' ["doUnpack" "addInputs" "minInit"];
+        "
+  '';
 
-  doDeploy = a.fullDepEntry ''
+  installPhase = ''
     mkdir -p "$out"
     cp -r j/bin "$out/bin"
     rm "$out/bin/profilex_template.ijs"
-    
+
     mkdir -p "$out/share/j"
 
     cp -r docs j/addons j/system "$out/share/j"
-  '' ["doUnpack" "doBuildJ" "minInit" "defEnsureDir"];
-      
-  meta = {
-    description = "J programming language, an ASCII-based APL successor";
-    maintainers = with a.lib.maintainers;
-    [
-      raskin
-    ];
-    platforms = with a.lib.platforms;
-      unix;
-    license = a.lib.licenses.gpl3Plus;
-  };
-  passthru = {
-    updateInfo = {
-      downloadPage = "http://jsoftware.com/source.htm";
-    };
-  };
-}) x
+  '';
 
+  meta = with stdenv.lib; {
+    description = "J programming language, an ASCII-based APL successor";
+    maintainers = with maintainers; [ raskin ];
+    platforms = platforms.unix;
+    license = licenses.gpl3Plus;
+    homepage = http://jsoftware.com/;
+  };
+}