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-rw-r--r--pym/portage/dbapi/vartree.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/pym/portage/dbapi/vartree.py b/pym/portage/dbapi/vartree.py
index 76a9034eb..4eee0cf05 100644
--- a/pym/portage/dbapi/vartree.py
+++ b/pym/portage/dbapi/vartree.py
@@ -4343,6 +4343,9 @@ class dblink(object):
if self.myroot == "/" and \
match_from_list(PORTAGE_PACKAGE_ATOM, [self.mycpv]) and \
not self.vartree.dbapi.cpv_exists(self.mycpv):
+ # Load lazily referenced portage submodules into memory,
+ # so imports won't fail during portage upgrade/downgrade.
+ portage.proxy.lazyimport._preload_portage_submodules()
settings = self.settings
base_path_orig = os.path.dirname(settings["PORTAGE_BIN_PATH"])
from tempfile import mkdtemp