cntb: fix darwin (#342036)

    owner = "contabo";

    repo = "cntb";

    rev = "v${version}";

    hash = "sha256-clDIrZdvEy4oO0ZvqDNLJbr4Ij8D5dcyZPxey6zLV6Q=";

    hash = "sha256-5JOO9tWMjy81wSB9Vq/gBYZ0xfrhES0dm/cTqXP8HiI";

    # docs contains two files with the same name but different cases,

    # this leads to a different hash on case insensitive filesystems (e.g. darwin)

    # https://github.com/contabo/cntb/issues/34

    postFetch = ''

      rm -rf $out/openapi/docs

    '';

  };

  subPackages = [ "." ];