Source code for spack.projections

# Copyright Spack Project Developers. See COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)

import spack.config



[docs]
def get_projection(projections, spec):
    """
    Get the projection for a spec from a projections dict.
    """
    all_projection = None
    for spec_like, projection in projections.items():
        # "all" is a catch-all, not a spec: satisfies("all") would trigger a package lookup
        # to check whether "all" is a virtual provided by the spec.
        if spec_like == "all":
            all_projection = spack.config.substitute_path_variables(projection)
        elif spec.satisfies(spec_like):
            return spack.config.substitute_path_variables(projection)
    return all_projection