Commit cc9d4195 authored by Reinout van Rees's avatar Reinout van Rees

Removed version-unconstrained ws.by_key.get(), this finds too many

non-matching versions.

Ignoring version conflicts for buildout and setuptools, this enables
buildout/setuptools upgrades/downgrades after a bootstrap.
parent 44a4557a
......@@ -650,13 +650,17 @@ class Installer:
logger.debug("Processing requirement %s (constrained to %s)",
current_requirement, req)
dist = best.get(req.key)
if dist is None:
# Find the best distribution and add it to the map.
dist = ws.by_key.get(req.key)
if dist is None:
try:
dist = env.best_match(req, ws)
except pkg_resources.VersionConflict as err:
if req.key in ['zc.buildout', 'setuptools']:
# We're bootstrapping zc.buildout with a different
# version than the one we specified in our versions
# list. Ignore the error it and we'll grab the right
# one below.
dist = None
else:
raise VersionConflict(err, ws)
if dist is None:
if dest:
......
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