Hi Mark,

Mark H Weaver <mhw@netris.org> skribis:

> guix-commits@gnu.org writes:
>
>> civodul pushed a commit to branch master
>> in repository guix.
>>
>> commit 50a93adc05b611836e740c4b55571890f4c6770a
>> Merge: 722ac64 69fb26d
>> Author: Ludovic Courtès <ludo@gnu.org>
>> Date:   Sat Feb 9 15:14:59 2019 +0100
>>
>>     Merge branch 'staging'
>
> I asked Hydra to evaluate 'master' after this commit, and it failed.
> See below for the evaluator.log output.

[...]

> evaluator hydra-eval-guile-jobs
> hydra-eval-guile-jobs returned exit code 1:
> adding `/gnu/store/1mkv0pa3yfgb8zvyc8lv3rgbppa313xw-git-export' to the load path
> WARNING: (gnu packages emacs-xyz): `python-sphinx' imported from both (gnu packages python) and (gnu packages python-xyz)
> WARNING: (gnu packages emacs-xyz): `python-autopep8' imported from both (gnu packages python) and (gnu packages python-xyz)

[...]

> Throw to key `srfi-34' with args `(#<condition &message [message: "ghostscript-CVE-2018-16509.patch: patch not found"] 42fd960>)'.

The problem is that ‘hydra-eval-guile-jobs’ would systematically add its
inputs to ‘%load-path’.  Chaos ensues, because we end up loading a
mixture of modules from the checkout and modules from the installed Guix
(that’s why we used to force auto-compilation, before commit
b5f8c2c88543158e8aca76aa98f9009f6b9e743a.)

To address this, I locally modified ‘hydra-eval-guile-jobs’ along these
lines: