Merge branch '342-build-system-check-type-of-variants-block' into 'master'
Resolve "build-system: check type of variants block"
Closes #342 (closed)
See merge request !330 (merged)
(cherry picked from commit b19c038f)
8b80ec9c build-system: check type of variants added
Co-authored-by: gsell achim.gsell@psi.ch