anchor.diff:      libpng
       libselinux
       libsepol
  +    libspnav
       libthai
       libxkbcommon
       pangomm
  
positive.code: 
  stdenv.mkDerivation rec {
    pname = "solvespace";
    version = "3.0";
  
    src = fetchFromGitHub {
      owner = pname;
      repo = pname;
      rev = "v${version}";
      hash = "sha256-aaYqUZ0c1lCL91fmxtKFAAE2uUWrjnDB3WdcqdutXhE=";
      fetchSubmodules = true;
    };
  
  
negative.code: , libpng
  , libselinux
  , libsepol
  , libspnav
  , libthai
  , libxkbcommon
  , pangomm
  