anchor.diff:      seqminer = [ pkgs.zlib.dev pkgs.bzip2 ];
       showtext = [ pkgs.zlib pkgs.libpng pkgs.icu pkgs.freetype.dev ];
       simplexreg = [ pkgs.gsl_1 ];
  -    SOD = [ pkgs.cudatoolkit ]; # requres CL/cl.h
  +    SOD = [ pkgs.opencl-headers ];
       spate = [ pkgs.fftw.dev ];
       sprint = [ pkgs.openmpi ];
       ssanv = [ pkgs.proj ];
  
positive.code:     affyio = [ pkgs.zlib.dev ];
      VariantAnnotation = [ pkgs.zlib.dev ];
      snpStats = [ pkgs.zlib.dev ];
    };
  
    packagesWithBuildInputs = {
  
negative.code:       PKG_LIBS = "-L${pkgs.openblasCompat}/lib -lopenblas";
      });
  
      EMCluster = old.EMCluster.overrideDerivation (attrs: {
        patches = [ ./patches/EMCluster.patch ];
      });
  