New concretizer picks random variant #20171
Description
Steps to reproduce the issue
The new concretizer picks a non-deterministic value for api in hdf5, where none is the default:
$ spack spec hdf5
[email protected]%[email protected]~cxx~debug~fortran~hl~java+mpi+pic+shared~szip~threadsafe api=v18 arch=linux-ubuntu20.04-zen2
$ spack spec hdf5
[email protected]%[email protected]~cxx~debug~fortran~hl~java+mpi+pic+shared~szip~threadsafe api=v110 arch=linux-ubuntu20.04-zen2Information on your system
- Spack: 0.16.0-102-623caf85a9
- Python: 3.8.6
- Platform: linux-ubuntu20.04-zen2
- Concretizer: clingo