anchor.diff:      # "ql-qlf"
       "sdc"
       "xdc"
  -    # "UHDM"
  +    "systemverilog"
     ];
   
     static_gtest = gtest.dev.overrideAttrs (old: {
  
positive.code:     maintainers = with maintainers; [ ollieB thoughtpolice ];
    };
  }))
  
  
  
negative.code: , yosys
  , zlib
  , yosys-symbiflow
  , uhdm
  , surelog
  }: let
  
    src = fetchFromGitHub {
      owner  = "chipsalliance";
      repo   = "yosys-f4pga-plugins";
      rev    = "aadd1735b2b7af0472e56dc23f1035d6e1904712";
      hash   = "sha256-gmpEx+8XDN7f+6e/YG25VKgdadwqApPqU3S6OB4AryA=";
    };
  
    version = "2022.05.13";
  
    # Supported symbiflow plugins.
    #
    # The following are disabled:
    #
    # "ql-qlf" builds but fails to load the plugin, so is not currently supported.
    plugins = [
      "design_introspection"
      "fasm"
  