anchor.diff: -{ lib, stdenv, fetchFromGitHub, fetchpatch, cmake
  -, cli11, nlohmann_json, curl, libarchive, libyamlcpp, libsolv, reproc, spdlog, termcolor, ghc_filesystem
  +{ lib
  +, stdenv
  +, fetchFromGitHub
  +, fetchpatch
  +, cli11
  +, cmake
  +, curl
  +, ghc_filesystem
  +, libarchive
  +, libsolv
  +, libyamlcpp
  +, nlohmann_json
  +, python3
  +, reproc
  +, spdlog
  +, termcolor
  +, tl-expected
   }:
   
   let
  
positive.code:     spdlog'
      termcolor
      ghc_filesystem
    ];
  
    cmakeFlags = [
  
negative.code:     ];
  
      patches = [
        # Apply the same patch as in the "official" boa-forge build:
        # https://github.com/mamba-org/boa-forge/tree/master/libsolv
        (fetchpatch {
          url = "https://raw.githubusercontent.com/mamba-org/boa-forge/20530f80e2e15012078d058803b6e2c75ed54224/libsolv/conda_variant_priorization.patch";
          sha256 = "1iic0yx7h8s662hi2jqx68w5kpyrab4fr017vxd4wyxb6wyk35dd";
  