anchor.diff:                   -I${libxc}/include -I${libxsmm}/include \
                    -I${libint2}/include
       LIBS       = -lfftw3 -lfftw3_threads \
  -                 -lscalapack -lmkl_gf_lp64 -lmkl_gnu_thread -lmkl_core \
  +                 -lscalapack -lblas -llapack \
                    -lxcf03 -lxc -lxsmmf -lxsmm -lsymspg \
                    -lint2 -lstdc++ -lvori \
                    -lgomp -lpthread -lm \
  
positive.code:     libxsmm
      spglib
      scalapack
      mkl
    ];
  
    propagatedBuildInputs = [ mpi ];
  
negative.code: { lib, stdenv, fetchFromGitHub, python3, gfortran, blas, lapack
  , fftw, libint2, libvori, libxc, mpi, gsl, scalapack, openssh, makeWrapper
  , libxsmm, spglib, which
  , optAVX ? false
  