nixpkgs/pkgs/misc/vim-plugins/vim2nix/additional-nix-code/youcompleteme

    buildPhase = ''
      substituteInPlace plugin/youcompleteme.vim \
        --replace "'ycm_path_to_python_interpreter', '''" \
                  "'ycm_path_to_python_interpreter', '${python}/bin/python'"

      rm -r third_party/ycmd
      ln -s ${ycmd}/lib/ycmd third_party
    '';

    meta = {
      description = "Fastest non utf-8 aware word and C completion engine for Vim";
      homepage = https://github.com/Valloric/YouCompleteMe;
      license = stdenv.lib.licenses.gpl3;
      maintainers = with stdenv.lib.maintainers; [marcweber jagajaga];
      platforms = stdenv.lib.platforms.unix;
    };