Unable to build flatpaks due to resolving host issues

Infrastructure
1

I’m trying to build flatpaks using GNOME GitLab’s CI, but appstream fails to resolve theevilskeleton.gitlab.io. The CI job link is at flatpak (#2845897) · Jobs · gregorni / Upscaler · GitLab

stdout:
data/io.gitlab.theevilskeleton.Upscaler.metainfo.xml: FAILED:
• url-not-found         : <screenshot> url not valid [https://theevilskeleton.gitlab.io/assets/upscaler.png]: Could not resolve host: theevilskeleton.gitlab.io
• style-invalid         : <caption> is too short [Overview];shortest allowed is 10 chars
• style-invalid         : <ul> cannot start a description [(null)]
• style-invalid         : Not enough <p> tags for a good description [0/1]
stderr:
Validation of files failed
――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――
Summary of Failures:
3/3 Validate appstream file FAIL            0.14s   exit status 1
Ok:                 2   
Expected Fail:      0   
Fail:               1   
Unexpected Pass:    0   
Skipped:            0   
Timeout:            0   
Full log written to /run/build/upscaler/_flatpak_build/meson-logs/testlog.txt
FAILED: meson-internal__test 
/usr/bin/meson test --no-rebuild --print-errorlogs
ninja: build stopped: subcommand failed.
Error: Running ninja test failed: module upscaler: Child process exited with code 1

https://theevilskeleton.gitlab.io/assets/upscaler.png is a valid image link. Running org.freedesktop.appstream-glib runs fine too:

❯ org.freedesktop.appstream-glib validate data/io.gitlab.theevilskeleton.Upscaler.metainfo.xml.in
data/io.gitlab.theevilskeleton.Upscaler.metainfo.xml.in: OK

Is there a way to fix that? I’m not really sure how it works. Some guidance would be appreciated.

Here’s the link of the merge request: Draft: Attempt building flatpaks in CI (!8) · Merge requests · World / Upscaler · GitLab

2

When running tests the sandbox has no access to the network now. You will need to add "build-options" : { "test-args": [ "--share=network"]}" in your manifest, along with any other permission you might need, like x11/wayland permissions, very similar to how we use finish-args.

Here’s an example from Nautilus.

2 Likes
3

Flatpak-builder only allows network access in the download phase, not the build phase.

You can pass the --no-net flag when validating the appstream data to skip downloading the screenshots.

3 Likes
4

Thank you! Out of curiosity, how come Nautilus doesn’t come with --share=network? I looked at the manifest and couldn’t find any occurrences of network access (or maybe I missed it).

5

Thank you! I used the code from GNOME Builder: data/appdata/meson.build · main · GNOME / gnome-builder · GitLab as I’m unfamiliar with Meson and had no idea how to pass flags. GNOME Builder seems to pass --nonet and not --no-net, so I went with the former. After incorporating your suggestion with @alatiera’s, it now works! flatpak (#2845940) · Jobs · World / Upscaler · GitLab