anchor.diff:  
     makeWrapperArgs = [ "--set LOCALE_ARCHIVE ${glibcLocales}/lib/locale/locale-archive"
                         "--set CHARSET en_us.UTF-8" ];
  +
  +  postInstall = ''
  +    installShellCompletion --bash contrib/completion/bash/_todo
  +    substituteInPlace contrib/completion/zsh/_todo --replace "jq " "${jq}/bin/jq "
  +    installShellCompletion --zsh contrib/completion/zsh/_todo
  +  '';
   
     preCheck = ''
       # Remove one failing test that only checks whether the command line works
  
positive.code: { stdenv, python3, glibcLocales }:
  
  let
    inherit (python3.pkgs) buildPythonApplication fetchPypi;
  
negative.code:     LANG = "en_US.UTF-8";
      LC_TYPE = "en_US.UTF-8";
  
    nativeBuildInputs = [ installShellFiles ];
    buildInputs = [ glibcLocales ];
    propagatedBuildInputs = with python3.pkgs;
      [ atomicwrites click click-log click-repl configobj humanize icalendar parsedatetime
  