anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "liblinphone";
  -  version = "4.4.35";
  +  version = "4.5.1";
   
     src = fetchFromGitLab {
       domain = "gitlab.linphone.org";
  
positive.code: , ortp
  , pango
  , pkg-config
  , python
  , readline
  , soci
  , speex
  
negative.code:     group = "BC";
      repo = pname;
      rev = version;
      sha256 = "05ybbxq2yqzy3f3vzq8c3szs3qr0zl64la53icpqnmfakwnps5gs";
    };
  
    # Do not build static libraries
  