Spack version 0.20.0.dev0
Python 3.8.10, Linux x86_64
>>> from spack.spec import Spec
>>> s = Spec("cp2k ^intel-oneapi-mkl")
>>> c = s.concretized()
>>> "intel-oneapi-mkl" in c
True
>>> "^intel-oneapi-mkl" in c
False
>>> c["blas"]
intel-oneapi-mkl@2023.0.0%gcc@9.4.0~cluster+envmods~ilp64+shared build_system=generic arch=linux-ubuntu20.04-icelake ^intel-oneapi-tbb@2021.8.0%gcc@9.4.0+envmods build_system=generic arch=linux-ubuntu20.04-icelake
>>> c["lapack"]
intel-oneapi-mkl@2023.0.0%gcc@9.4.0~cluster+envmods~ilp64+shared build_system=generic arch=linux-ubuntu20.04-icelake ^intel-oneapi-tbb@2021.8.0%gcc@9.4.0+envmods build_system=generic arch=linux-ubuntu20.04-icelake

>>> "^intel-oneapi-mkl" in c
False