anchor.diff:  , at-spi2-core
   , cairo
   , dbus
  +, eigen
   , freetype
   , fontconfig
   , glew
  
positive.code:     libpng
      libselinux
      libsepol
      libthai
      libxkbcommon
      pangomm
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "solvespace";
    version = "3.1";
  
    src = fetchFromGitHub {
      owner = pname;
      repo = pname;
      rev = "v${version}";
      hash = "sha256-sSDht8pBrOG1YpsWfC/CLTTWh2cI5pn2PXGH900Z0yA=";
      fetchSubmodules = true;
    };
  
  