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-rw-r--r--etc/spack/defaults/concretizer.yaml5
1 files changed, 3 insertions, 2 deletions
diff --git a/etc/spack/defaults/concretizer.yaml b/etc/spack/defaults/concretizer.yaml
index df846c523a..caf500eb1f 100644
--- a/etc/spack/defaults/concretizer.yaml
+++ b/etc/spack/defaults/concretizer.yaml
@@ -13,8 +13,9 @@ concretizer:
# Whether to consider installed packages or packages from buildcaches when
# concretizing specs. If `true`, we'll try to use as many installs/binaries
# as possible, rather than building. If `false`, we'll always give you a fresh
- # concretization.
- reuse: true
+ # concretization. If `dependencies`, we'll only reuse dependencies but
+ # give you a fresh concretization for your root specs.
+ reuse: dependencies
# Options that tune which targets are considered for concretization. The
# concretization process is very sensitive to the number targets, and the time
# needed to reach a solution increases noticeably with the number of targets