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Maniphest T402666

[PCS] Fix/improve fetching of site-specific CSS.
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Description

One of the CSS bundles provided by PCS is site-specific CSS: /data/css/mobile/site, as defined by each language wiki.

However, it looks like the service is currently fetching desktop-specific site CSS (from Common.css) instead of the more-desirable mobile-specific CSS (Mobile.css and/or Minerva.css).

This hasn't necessarily caused any issues so far, since desktop and mobile CSS likely overlaps quite a bit, but updating the service to return the proper CSS will surely align it more with the expected mobile presentation.

Details

Related Changes in Gerrit:
SubjectRepoBranchLines +/-
[WIP] Improve fetching of site-specific styles.mediawiki/services/mobileappsmaster+10 -4
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Event Timeline

Dbrant created this task.Aug 22 2025, 4:36 PM
Restricted Application added a subscriber: Aklapper. · View Herald TranscriptAug 22 2025, 4:36 PM
gerritbot added a comment.Aug 22 2025, 6:24 PM

Change #1181174 had a related patch set uploaded (by Dbrant; author: Dbrant):

[mediawiki/services/mobileapps@master] Improve fetching of site-specific styles.

https://gerrit.wikimedia.org/r/1181174

gerritbot added a project: Patch-For-Review.Aug 22 2025, 6:24 PM
Dbrant added a subtask: T269385: References in Spanish Wikipedia shouldn't have columns.Aug 22 2025, 6:30 PM
Izno subscribed.EditedAug 22 2025, 9:14 PM

A couple things about that patch.

  1. The mobile domain sunsetting (accepted) RFC needs review (and perhaps the attached tasks). Introducing a dependency on the m. website seems like an error at this time.
  2. There's probably merit to reviewing how MobileFrontend decides what CSS/JS to load, since there are configuration options in that context which stop loading the mobile web resources and which perhaps more importantly for this task start loading the common.X ones. The relevant config is already enabled on MediaWiki wiki and en.wp presently has a task open that should be going through SoonTM (T375538 with some other perhaps-interesting links). See here, here, and possibly here.
Dbrant added a comment.Aug 22 2025, 9:24 PM
In T402666#11112025, @Izno wrote:

A couple things about that patch.

Thanks for that context! Will keep an eye on these developments, and adjust the PCS-side logic accordingly.

Dbrant added a subtask: T407308: Long titles cause horizontal scroll on Wikipedia's android app.Oct 15 2025, 1:18 PM
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