I rebased the patch onto today's Guix commits, and Flatpak 1.12.1 and 1.12.2 passes the tests on my machine. But I'm currently running Guix on Arch and don't have a Guix system available to test further.

All dependent packages except wpewebkit build successfully. wpewebkit build log complains during cmake configuration that a required package is not found, but it seems unrelated to bubblewrap, and it won't build on master anyways.

Jan 11, 2022, 17:52 by ludo@gnu.org:

> Hi,
>
> kiasoc5@tutanota.com skribis:
>
>> Fixed locale in tests, thanks Ludo for the suggestion via email. Also fixed more test substitutions and simplified inputs.
>>
> >>From f5c56100d62d315c3ed860898998a7c8afc78d50 Mon Sep 17 00:00:00 2001
>
>> From: kiasoc5 <kiasoc5@tutanota.com>
>> Date: Mon, 10 Jan 2022 17:58:35 -0500
>> Subject: [PATCH] gnu: bubblewrap: Update to 0.5.0.
>>
>> * gnu/packages/patches/bubblewrap-fix-locale-in-tests.patch: Add it.
>> * gnu/local.mk (dist_patch_DATA): Add it.
>> * gnu/packages/virtualization.scm (bubblewrap): Update to 0.5.0.
>> [source]: Add patch.
>> [arguments]: Adjust test substitutions.
>> [inputs]: Remove labels.
>> [native-inputs]: Remove labels.
>>
>
> That LGTM.  I tested direct dependents as shown by:
>
> ./pre-inst-env guix graph -M1 -t reverse-package bubblewrap | xdot -f fdp -
>
> Unfortunately, the update breaks flatpak (both 1.12.1 and 1.12.2):
>
> --8<---------------cut here---------------start------------->8---
> make[3]: Nothing to be done for 'tests/org.flatpak.Authenticator.test.service.in'.
> rm -rf tests/runtime-repo
> PATH=/tmp/guix-build-flatpak-1.12.2.drv-0/flatpak-1.12.2:${PATH} ./tests/make-test-runtime.sh tests/runtime-repo org.test.Platform master "" ""
> guix
> error: Writing content object: min-free-space-percent '3%' would be exceeded, at least 36.9 kB requested
> make[3]: *** [Makefile:7804: tests/runtime-repo] Error 1
> make[3]: Leaving directory '/tmp/guix-build-flatpak-1.12.2.drv-0/flatpak-1.12.2'
> make[2]: *** [Makefile:7063: check-am] Error 2
> make[2]: Leaving directory '/tmp/guix-build-flatpak-1.12.2.drv-0/flatpak-1.12.2'
> make[1]: *** [Makefile:6255: check-recursive] Error 1
> make[1]: Leaving directory '/tmp/guix-build-flatpak-1.12.2.drv-0/flatpak-1.12.2'
> make: *** [Makefile:7067: check] Error 2
> error: in phase 'check': uncaught exception:
> %exception #<&invoke-error program: "make" arguments: ("check" "TESTS=tests/test-basic.sh tests/test-config.sh testcommon") exit-status: 2 term-signal: #f stop-signal: #f> 
> phase `check' failed after 17.2 seconds
> command "make" "check" "TESTS=tests/test-basic.sh tests/test-config.sh testcommon" failed with status 2
> --8<---------------cut here---------------end--------------->8---
>
> Could you take a look?
>
> Apologies for the extra work!
>
> Thanks,
> Ludo’.
>