ripmime: reimplement using mkDerivation

pkgs/tools/networking/ripmime/default.nix

@@ -1,51 +1,29 @@
-x@{builderDefsPackage
-  
-  , ...}:
-builderDefsPackage
-(a :  
-let 
-  helperArgNames = ["stdenv" "fetchurl" "builderDefsPackage"] ++ 
-    [];
+{ stdenv, fetchurl }:
 
-  buildInputs = map (n: builtins.getAttr n x)
-    (builtins.attrNames (builtins.removeAttrs x helperArgNames));
-  sourceInfo = rec {
-    baseName="ripmime";
-    version="1.4.0.10";
-    name="${baseName}-${version}";
-    url="http://www.pldaniels.com/${baseName}/${name}.tar.gz";
-    hash="0sj06ibmlzy34n8v0mnlq2gwidy7n2aqcwgjh0xssz3vi941aqc9";
-  };
-in
-rec {
-  src = a.fetchurl {
-    url = sourceInfo.url;
-    sha256 = sourceInfo.hash;
+stdenv.mkDerivation rec {
+  name = "${pname}-${version}";
+  pname = "ripmime";
+  version = "1.4.0.10";
+  src = fetchurl {
+    url = "http://www.pldaniels.com/${pname}/${name}.tar.gz";
+    sha256 = "0sj06ibmlzy34n8v0mnlq2gwidy7n2aqcwgjh0xssz3vi941aqc9";
   };
 
-  inherit (sourceInfo) name version;
-  inherit buildInputs;
-
-  /* doConfigure should be removed if not needed */
-  phaseNames = ["fixTarget" "doMakeInstall"];
-  fixTarget = a.fullDepEntry (''
+  preInstall = ''
     sed -i Makefile -e "s@LOCATION=.*@LOCATION=$out@" -e "s@man/man1@share/&@"
     mkdir -p "$out/bin" "$out/share/man/man1"
-  '') ["doUnpack" "minInit" "defEnsureDir"];
-      
-  meta = {
+  '';
+
+  meta = with stdenv.lib; {
     description = "Attachment extractor for MIME messages";
-    maintainers = with a.lib.maintainers;
-    [
-      raskin
-    ];
-    platforms = with a.lib.platforms;
-      linux;
+    maintainers = with maintainers; [ raskin ];
+    homepage = http://www.pldaniels.com/ripmime/;
+    platforms = with platforms; linux;
   };
+
   passthru = {
     updateInfo = {
       downloadPage = "http://www.pldaniels.com/ripmime/";
     };
   };
-}) x
-
+}