diff --git a/pkgs/tools/networking/philter/default.nix b/pkgs/tools/networking/philter/default.nix
index af5b9aacffcc..3d5ed7b34cae 100644
--- a/pkgs/tools/networking/philter/default.nix
+++ b/pkgs/tools/networking/philter/default.nix
@@ -1,57 +1,30 @@
-x@{builderDefsPackage
-  , python, makeWrapper
-  , ...}:
-builderDefsPackage
-(a :  
-let 
-  helperArgNames = ["stdenv" "fetchurl" "builderDefsPackage"] ++ 
-    [];
+{ stdenv, fetchurl, python }:
 
-  buildInputs = map (n: builtins.getAttr n x)
-    (builtins.attrNames (builtins.removeAttrs x helperArgNames));
-  sourceInfo = rec {
-    baseName="philter";
-    version="1.1";
-    name="${baseName}-${version}";
-    url="mirror://sourceforge/${baseName}/${name}.tar.gz";
-    hash="177pqfflhdn2mw9lc1wv9ik32ji69rjqr6dw83hfndwlsva5151l";
-  };
-in
-rec {
-  src = a.fetchurl {
-    url = sourceInfo.url;
-    sha256 = sourceInfo.hash;
+stdenv.mkDerivation rec {
+  name = "philter-${version}";
+  version = "1.1";
+  src = fetchurl {
+    url = "mirror://sourceforge/philter/${name}.tar.gz";
+    sha256 = "177pqfflhdn2mw9lc1wv9ik32ji69rjqr6dw83hfndwlsva5151l";
   };
 
-  inherit (sourceInfo) name version;
-  inherit buildInputs;
+  installPhase = ''
+    mkdir -p "$out"/{bin,share/philter}
+    cp .philterrc "$out"/share/philter/philterrc
+    sed -i 's@/usr/local/bin@${python}/bin@' src/philter.py
+    cp src/philter.py "$out"/bin/philter
+    chmod +x "$out"/bin/philter
+  '';
 
-  /* doConfigure should be removed if not needed */
-  phaseNames = ["installProgram" "patchShebangs" "wrapBinContentsPython"];
-  patchShebangs = (a.doPatchShebangs "$out/bin");
-
-  installProgram = a.fullDepEntry(''
-    mv "$out/share/philter/".*rc "$out/share/philter/philterrc"
-    mkdir -p "$out/bin"
-    cp "$out/share/philter/src/philter.py" "$out/bin/philter"
-    chmod a+x "$out/bin/philter"
-  '') ["addInputs" "copyToShare" "minInit"];
-
-  copyToShare = (a.simplyShare "philter");
-      
-  meta = {
+  meta = with stdenv.lib; {
     description = "Mail sorter for Maildirs";
-    maintainers = with a.lib.maintainers;
-    [
-      raskin
-    ];
-    platforms = with a.lib.platforms;
-      linux;
+    maintainers = with maintainers; [ raskin ];
+    platforms = with platforms; linux;
   };
+
   passthru = {
     updateInfo = {
       downloadPage = "http://philter.sourceforge.net/";
     };
   };
-}) x
-
+}