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-rw-r--r--lib/spack/spack/environment/environment.py7
1 files changed, 4 insertions, 3 deletions
diff --git a/lib/spack/spack/environment/environment.py b/lib/spack/spack/environment/environment.py
index 7366468f7a..1c16c708b3 100644
--- a/lib/spack/spack/environment/environment.py
+++ b/lib/spack/spack/environment/environment.py
@@ -1612,9 +1612,10 @@ class Environment(object):
# ensure specs already installed are marked explicit
all_specs = specs or [cs for _, cs in self.concretized_specs()]
specs_installed = [s for s in all_specs if s.installed]
- with spack.store.db.write_transaction(): # do all in one transaction
- for spec in specs_installed:
- spack.store.db.update_explicit(spec, True)
+ if specs_installed:
+ with spack.store.db.write_transaction(): # do all in one transaction
+ for spec in specs_installed:
+ spack.store.db.update_explicit(spec, True)
if not specs_to_install:
tty.msg('All of the packages are already installed')