anchor.diff:  }:
   
   stdenv.mkDerivation rec {
  -  name = "plan9port-2015-11-10";
  +  name = "plan9port-2016-04-18";
   
     src = fetchgit {
       # Latest, same as on github, google code is old
       url = "https://plan9port.googlesource.com/plan9";
  -    rev = "0d2dfbc";
  -    sha256 = "1h16wvps4rfkjim2ihkmniw8wzl7yill5910larci1c70x6zcicf";
  +    rev = "35d43924484b88b9816e40d2f6bff4547f3eec47";
  +    sha256 = "1dvg580rkav09fra2gnrzh271b4fw6bgqfv4ib7ds5k3j55ahcdc";
     };
   
     patches = [
  
positive.code:     homepage = "http://swtch.com/plan9port/";
      description = "Plan 9 from User Space";
      license = licenses.lpl-102;
      maintainers = with stdenv.lib.maintainers; [ ftrvxmtrx kovirobi ];
      platforms = platforms.unix;
    };
  
  
negative.code:     find . -type f \
        -exec sed -i -e 's/_SVID_SOURCE/_DEFAULT_SOURCE/g' {} \; \
        -exec sed -i -e 's/_BSD_SOURCE/_DEFAULT_SOURCE/g' {} \;
    '' + stdenv.lib.optionalString (!stdenv.isDarwin) ''
      #add missing ctrl+c\z\x\v keybind for non-Darwin
      substituteInPlace src/cmd/acme/text.c \
        --replace "case Kcmd+'c':" "case 0x03: case Kcmd+'c':" \
        --replace "case Kcmd+'z':" "case 0x1a: case Kcmd+'z':" \
        --replace "case Kcmd+'x':" "case 0x18: case Kcmd+'x':" \
        --replace "case Kcmd+'v':" "case 0x16: case Kcmd+'v':"
    '';
  
    builder = ./builder.sh;
  
    NIX_LDFLAGS="-lgcc_s";
    buildInputs = stdenv.lib.optionals (!stdenv.isDarwin) [
      which
      perl
      libX11
      fontconfig
      xproto
      libXt
      xextproto
      libXext
      freetype #fontsrv wants ft2build.h. provides system fonts for acme and sam.
    ];
  
    enableParallelBuilding = true;
  
  