anchor.diff:    postInstall = ''
       mkdir -p $doc/share/doc/httpd
       mv $out/manual $doc/share/doc/httpd
  -    mkdir -p $out/share # FIXME, hack
  +    mkdir -p $dev/bin
  +    mv $out/sbin/apxs $dev/bin/apxs
     '';
   
     passthru = {
  
positive.code:     sha256 = "1b165zi7jrrlz5wmyy3b34lcs3dl4g0dymfb0qxwdnimylcrsbzk";
    };
  
    outputs = [ "dev" "out" "doc" ];
  
    buildInputs = [ pkgconfig perl apr aprutil pcre zlib ] ++
  
negative.code: 
    # Required for ‘pthread_cancel’.
    NIX_LDFLAGS = (if stdenv.isDarwin then "" else "-lgcc_s");
  
    patchPhase = ''
      sed -i config.layout -e "s|installbuilddir:.*|installbuilddir: $dev/share/build|"
    '';
  
    configureFlags = ''
      --with-z=${zlib}
  