The already concrete specs in an environment are now among the reusable specs for the concretizer.
This includes concrete specs from all include_concrete environments.
In addition to this change to the default reuse, `environment` is added as a reuse type for
the concretizer config. This allows users to specify:
spack:
concretizer:
# Reuse from this environment (including included concrete) but not elsewhere
reuse:
from:
- type: environment
# or reuse from only my_env included environment
reuse:
from:
- type:
environment: my_env
# or reuse from everywhere
reuse: true
If reuse is specified from a specific environment, only specs from that environment will be reused.
If the reused environment is not specified via include_concrete, the concrete specs will be retried
at concretization time to be reused.
Signed-off-by: Ryan Krattiger <ryan.krattiger@kitware.com>
Co-authored-by: Gregory Becker <becker33@llnl.gov>
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