anchor.diff:  
     postInstall = ''
       ln -s $out/bin/task $out/bin/go-task
  +
  +    installShellCompletion completion/{bash,fish,zsh}/*
     '';
   
     meta = with lib; {
  
positive.code: { lib, buildGoModule, fetchFromGitHub }:
  
  buildGoModule rec {
    pname = "go-task";
  
negative.code: 
    doCheck = false;
  
    nativeBuildInputs = [ installShellFiles ];
  
    subPackages = [ "cmd/task" ];
  
    ldflags = [
  