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Fix pacman: "IndexError: list index out of range" #63077 (#65750)

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* Fix #63077

If the package is already installed the stdout is not as expected by this function. Either remove `--needed` or just noop if we detect pacman returning. We cannot match the stdout string, as that is most likely localized.

```
[root@archBook user]# /usr/bin/pacman --upgrade --noconfirm --noprogressbar --needed  /srv/aur/src/i3cat-git/i3cat-git-r38.c6d29dd-1-x86_64.pkg.tar.xz
loading packages...
warning: i3cat-git-r38.c6d29dd-1 is up to date -- skipping
 there is nothing to do
```

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* Add changelog fragment.

Co-authored-by: Felix Fontein <felix@fontein.de>
This commit is contained in:
Klaus Frank 2020-02-01 14:37:27 +01:00 committed by GitHub
parent 3baea92ec9
commit 14b1febf64
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2 changed files with 22 additions and 14 deletions
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2
changelogs/fragments/65750-pacman.yml Normal file
View file

@ -0,0 +1,2 @@
bugfixes:
- "pacman - fix module crash with ``IndexError: list index out of range`` (https://github.com/ansible/ansible/issues/63077)"

6
lib/ansible/modules/packaging/os/pacman.py
View file

@ -329,6 +329,9 @@ def install_packages(module, pacman_path, state, packages, package_files):
if rc != 0:
module.fail_json(msg="failed to install %s: %s" % (" ".join(to_install_repos), stderr))
# As we pass `--needed` to pacman returns a single line of ` there is nothing to do` if no change is performed.
# The check for > 3 is here because we pick the 4th line in normal operation.
if len(stdout.split('\n')) > 3:
data = stdout.split('\n')[3].split(' ')[2:]
data = [i for i in data if i != '']
for i, pkg in enumerate(data):
@ -345,6 +348,9 @@ def install_packages(module, pacman_path, state, packages, package_files):
if rc != 0:
module.fail_json(msg="failed to install %s: %s" % (" ".join(to_install_files), stderr))
# As we pass `--needed` to pacman returns a single line of ` there is nothing to do` if no change is performed.
# The check for > 3 is here because we pick the 4th line in normal operation.
if len(stdout.split('\n')) > 3:
data = stdout.split('\n')[3].split(' ')[2:]
data = [i for i in data if i != '']
for i, pkg in enumerate(data):