Re: [gentoo-dev] News item review: python-exec 2.3 reclaims python* symlinks

[M. J. Everitt]

On 21/01/17 16:36, Kristian Fiskerstrand wrote:
> On 01/21/2017 10:49 AM, Michał Górny wrote:
>> Please review the following news item. It was requested by users.
>> Preferably I'd like to commit it today.
> ..
>
>> If you are using FEATURES=collision-protect, Portage will reject
>> the upgrade. If this is the case, please temporarily switch to
>> FEATURES=protect-owned for the upgrade.
>>
>> If you are using FEATURES=protect-owned, Portage will verbosely warn
>> about the file collisions but will proceed with the upgrade once
>> determining no replaced files are owned. Please disregard the warning.
> This change broke a stable system in my case without any of these features.
>
> world upgrade failed with  * ERROR: dev-python/pycairo-1.10.0-r5::gentoo
> failed (configure phase): due to
> /usr/bin/env: ‘python’: No such file or directory
>
> system ended up with a broken symlink
> lrwxrwxrwx 1 root root 14 Jan 21 13:55
>              /usr/bin/python -> python-wrapper
>
> additionally the original upgrade, after manually setting the updated
> symlink, ended up with a
> python-exec: Invalid impl in /etc/python-exec/python-exec.conf: python3.3
>
> How was this allowed into stable?
>
python3.3 has been long-gone no?

But otherwise, I think this is exactly what someone was trying to forestall.

How it got into the wild is another question......