anchor.diff:  { lib
  -, python3Packages
  +, python38
   , fetchFromGitHub
  -, python3
   , fetchpatch
   }:
   
  
positive.code: # For now, for deployment check the systemd unit in the pull request:
  #   https://github.com/NixOS/nixpkgs/pull/103851#issue-521121136
  
  python3Packages.buildPythonApplication rec {
    pname = "tts";
    version = "0.0.15.1";
  
    src = fetchFromGitHub {
      owner = "coqui-ai";
  
negative.code:     sed -i -e 's!umap-learn==[^"]*!umap-learn!' requirements.txt
    '';
  
    nativeBuildInputs = with python3.pkgs; [
      cython
    ];
  
    propagatedBuildInputs = with python3.pkgs; [
      anyascii
      coqpit
      flask
  