buildInputs = [ which ];

    buildPhase = ''
      substituteInPlace autoload/vimproc.vim \
        --replace vimproc_mac.so vimproc_unix.so \
        --replace vimproc_linux64.so vimproc_unix.so \
        --replace vimproc_linux32.so vimproc_unix.so
      make -f make_unix.mak
    '';