anchor.diff:  , yosys-symbiflow
   , uhdm
   , surelog
  +, flatbuffers
   }: let
   
     src = fetchFromGitHub {
       owner  = "chipsalliance";
       repo   = "yosys-f4pga-plugins";
  -    rev    = "27208ce08200a5e89e3bd4f466bc68824df38c32";
  -    hash   = "sha256-S7txjzlIp+idWIfp/DDOznluA3aMFfosMUt5dvi+g44=";
  +    rev    = "e23ff6db487da9ceea576c53ac33853566c3a84e";
  +    hash   = "sha256-HJ4br6lQwRrcnkLgV3aecr3T3zcPzA11MfxhRjwIb0I=";
     };
   
  -  version = "2022.09.27";
  +  version = "2022.11.07";
   
     # Supported symbiflow plugins.
     #
  
positive.code: 
    # Providing a symlink avoids the need for patching the test makefile
    postUnpack = ''
      mkdir -p source/third_party/googletest/googletest/build/
      ln -s ${static_gtest}/lib source/third_party/googletest/googletest/build/lib
    '';
  
    makeFlags = [
  
negative.code:   patches = lib.optional ( plugin == "ql-qlf" ) ./symbiflow-pmgen.patch;
  
    preBuild = ''
      export LDFLAGS="-L${flatbuffers}/lib"
      mkdir -p ql-qlf-plugin/pmgen
    ''
    + lib.optionalString ( plugin == "ql-qlf" ) ''
  