anchor.diff:  in
   stdenv.mkDerivation rec {
     pname = "micromamba";
  -  version = "0.22.0";
  +  version = "0.24.0";
   
     src = fetchFromGitHub {
       owner = "mamba-org";
       repo = "mamba";
       rev = "micromamba-" + version;
  -    sha256 = "sha256-9/vkn8wks2nyzIn5hnK+zvX18Du2B8YZ3/ugrmEGVH8=";
  +    sha256 = "sha256-CszDmt3SElHo1D2sNy2tPhZ43YD3pDjT8+fp2PVk+7Y=";
     };
   
     nativeBuildInputs = [ cmake ];
  
positive.code: { lib, stdenv, fetchFromGitHub, fetchpatch, cmake
  , cli11, nlohmann_json, curl, libarchive, libyamlcpp, libsolv, reproc, spdlog, termcolor, ghc_filesystem
  }:
  
  let
  
negative.code:     spdlog'
      termcolor
      ghc_filesystem
      python3
      tl-expected
    ];
  
    cmakeFlags = [
  