anchor.diff:  { config, lib, stdenv, fetchFromGitHub, pkg-config, cmake
   
   # dependencies
  -, glib, libXinerama
  +, glib, libXinerama, catch2
   
   # optional features without extra dependencies
   , mpdSupport          ? true
  
positive.code:     sed -i 's/ Example: .*$//' doc/config_settings.xml
  
      substituteInPlace cmake/Conky.cmake --replace "# set(RELEASE true)" "set(RELEASE true)"
    '';
  
    NIX_LDFLAGS = "-lgcc_s";
  
negative.code:   # src/conky.cc:137:23: fatal error: defconfig.h: No such file or directory
    enableParallelBuilding = false;
  
    doCheck = true;
  
    meta = with lib; {
      homepage = "http://conky.sourceforge.net/";
      description = "Advanced, highly configurable system monitor based on torsmo";
  