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Handle dnf immutable mutable datatypes (#46176)

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In DNF < 3.0 are lists, and modifying them works
In DNF >= 3.0 < 3.6 are lists, but modifying them doesn't work
In DNF >= 3.6 have been turned into tuples, to communicate that
modifying them doesn't work

Further explanation of this is available via Adam Williamson from
the Fedora QA Team.

    https://www.happyassassin.net/2018/06/27/adams-debugging-adventures-the-immutable-mutable-object/

Signed-off-by: Adam Miller <admiller@redhat.com>
This commit is contained in:
Adam Miller 2018-09-27 02:45:58 -05:00 committed by ansibot
parent 382641ff24
commit 71280ee773
1 changed files with 16 additions and 3 deletions
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19
lib/ansible/modules/packaging/os/dnf.py
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@ -505,13 +505,26 @@ class DnfModule(YumDnf):
# Set installroot
conf.installroot = installroot
# Handle different DNF versions immutable mutable datatypes and
# dnf v1/v2/v3
#
# In DNF < 3.0 are lists, and modifying them works
# In DNF >= 3.0 < 3.6 are lists, but modifying them doesn't work
# In DNF >= 3.6 have been turned into tuples, to communicate that modifying them doesn't work
#
# https://www.happyassassin.net/2018/06/27/adams-debugging-adventures-the-immutable-mutable-object/
#
# Set excludes
if self.exclude:
conf.exclude(self.exclude)
_excludes = list(conf.exclude)
_excludes.extend(self.exclude)
conf.exclude = _excludes
# Set disable_excludes
if self.disable_excludes:
conf.disable_excludes.append(self.disable_excludes)
_disable_excludes = list(conf.disable_excludes)
if self.disable_excludes not in _disable_excludes:
_disable_excludes.append(self.disable_excludes)
conf.disable_excludes = _disable_excludes
# Set releasever
if self.releasever is not None: