{ fetchgit
, stdenv
, callPackage
}:

stdenv.lib.overrideDerivation (callPackage ./trivmix.nix {}) (attrs : {
  src = fetchgit {
    url = git://git.yggdrasil.li/trivmix;
    # nix-shell -p nix-prefetch-scripts --command 'nix-prefetch-git git://git.yggdrasil.li/beuteltier' 2>&1 | grep -E '(git revision|hash) is ' | sed -r 's/git revision is /rev = "/' | sed -r 's/hash is /sha256 = "/' | sed -r 's/$/";/'
    rev = "f13bdd71f3cf4c3d3d1f58fbd0c75d66b0eb3e23";
    sha256 = "1ayz5s0z66bdg7g1jy47hl069swzpy7rfkfcr3mhl44mh4ap0ycr";
  };
})