diff options
Diffstat (limited to 'lib/spack/spack/spec.py')
| -rw-r--r-- | lib/spack/spack/spec.py | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/lib/spack/spack/spec.py b/lib/spack/spack/spec.py index ff71662a03..8b13374430 100644 --- a/lib/spack/spack/spec.py +++ b/lib/spack/spack/spec.py @@ -4433,6 +4433,34 @@ class Spec(object): return _spec_from_dict, (self.to_dict(hash=ht.build_hash),) +def merge_abstract_anonymous_specs(*abstract_specs): + """Merge the abstracts specs passed as input and return the result. + + The root specs must be anonymous, and it's duty of the caller to ensure that. + + This function merge the abstract specs based on package names. In particular + it doesn't try to resolve virtual dependencies. + + Args: + *abstract_specs (list of Specs): abstract specs to be merged + """ + merged_spec = spack.spec.Spec() + for current_spec_constraint in abstract_specs: + merged_spec.constrain(current_spec_constraint, deps=False) + + for name in merged_spec.common_dependencies(current_spec_constraint): + merged_spec[name].constrain( + current_spec_constraint[name], deps=False + ) + + # Update with additional constraints from other spec + for name in current_spec_constraint.dep_difference(merged_spec): + edge = current_spec_constraint.get_dependency(name) + merged_spec._add_dependency(edge.spec.copy(), edge.deptypes) + + return merged_spec + + def _spec_from_old_dict(data): """Construct a spec from JSON/YAML using the format version 1. Note: Version 1 format has no notion of a build_spec, and names are |