From ecb9787a2bbdbfc8076dd96af47946e21142ffb3 Mon Sep 17 00:00:00 2001 From: Barry Warsaw Date: Thu, 13 Aug 2015 18:21:53 -0400 Subject: Work around Debian's devendorizing of pkg_resource dependencies. Forwarded: not-needed Patch-Name: handle-pkg_resources-devendorization.patch --- pex/pex_bootstrapper.py | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/pex/pex_bootstrapper.py b/pex/pex_bootstrapper.py index 137757f..f2aaa45 100644 --- a/pex/pex_bootstrapper.py +++ b/pex/pex_bootstrapper.py @@ -94,6 +94,20 @@ def bootstrap_pex(entry_point): register_finders() maybe_reexec_pex() + # 2015-03-24 BAW (Debian/Ubuntu): This will make grown Pythonistas weep. In + # Debian, we devendorize pkg_resources by removing all its bundled + # dependencies and making it use the system versions. This plays havoc with + # pex though, because pex messes with sys.path and sys.modules and ends up + # double importing sub-modules from pkg_resources. This confuses Python + # deeply, resulting in AttributeError tracebacks when pkg_resources itself + # tries to dig sub-modules out of its own namespace. Yes, AttributeErrors, + # not ImportErrors. By pure trial and error, this seems to work around the + # problem. + import sys + for modname in list(sys.modules): + if modname.startswith('pkg_resources.'): + del sys.modules[modname] + from . import pex pex.PEX(entry_point).execute()