anchor.diff:      inherit fetchurl stdenv;
     };
   
  -  curl = if stdenv ? curl then stdenv.curl else (assert false; null);
  +  curl = if stdenv ? curl then (lowPrio (stdenv.curl)) else (assert false; null);
   
     curlftpfs = import ../tools/networking/curlftpfs {
       inherit fetchurl stdenv fuse curl pkgconfig zlib;
  
positive.code:     inherit fetchurl stdenv ghc;
    };
  
    javafront = import ../development/compilers/java-front {
      inherit stdenv fetchurl pkgconfig;
      sdf = sdf24;
  
negative.code:     db4 = db45;
    };
  
    nixCustomFun = src: preConfigure: enableScripts: configureFlags:
      import ../tools/package-management/nix/custom.nix {
        inherit fetchurl stdenv perl curl bzip2 openssl src preConfigure automake 
          autoconf libtool configureFlags enableScripts lib;
        bison = bison23;
        flex = flex2533;
        aterm = aterm242fixes;
  