I have prepared 9 gadgets that only contain styles for templates, as can be seen at https://sv.wikipedia.org/wiki/MediaWiki-diskussion:Gadgets-definition#TemplateStyles

The idea is to convert them to TemplateStyles as soon as the extension is depolyed to svwiki. I would start with sparsely used stuff like https://sv.wikipedia.org/wiki/MediaWiki:Gadget-transborder.css (used by https://sv.wikipedia.org/wiki/Mall:Cirkeldiagram/t%C3%A5rtbit) and if that works, maybe migrate styles for more widely used templates as well.

But maybe you want a smaller project than svwiki for this task?

@Nirmos No, I think Swedish Wikipedia is about the right size – it's not e.g. German, English or French Wikipedia, but big enough to actually get some feedback. (:

Engineers of Russian Wikipedia are ready to switch on TemplateStyles ext on ruwiki if you will fix T168333 :)

@Nirmos, @Iniquity at the moment we don't have TemplateStyles incorporated in VE or - maybe less of a concern, not sure of the exact config on svwiki or ruwiki - Flow. You'd want that stuff in place before deployment, right?

I'm fairly certain Swedish Wikipedia would definitely want that, yes.

(Flow is not a concern for us at the moment.)

In T168808#3436018, @dr0ptp4kt wrote:

@Nirmos, @Iniquity at the moment we don't have TemplateStyles incorporated in VE or - maybe less of a concern, not sure of the exact config on svwiki or ruwiki - Flow. You'd want that stuff in place before deployment, right?

Note that VE should now be done (see T164790), and Flow is partially done (see T164791, currently Flow comments are done but summaries and the board header aren't yet).

@dr0ptp4kt yes, you are right. But only after T168333.

Is there anything blocking deployment to svwiki? Is there anything I can do to speed up the process? Would it help if I were to explain on svwiki's village pump what it is and why it's good?

@Nirmos I thought an editor asked T168333 to be treated as a blocker (or am I confusing different wikis)?

That was ruwiki. I don't think T168333 is very important at all for svwiki. We don't have articles with 22 navboxes (https://ru.wikipedia.org/wiki/Загалло,_Марио). The Swedish equivalent (https://sv.wikipedia.org/wiki/Mário_Zagallo) actually has 8 navboxes, which surprises me, so maybe I'll wait with migrating navbox styles in particular, but that does not stop me from migrating other styles.

I have now evangelized about TemplateStyles at https://sv.wikipedia.org/wiki/Wikipedia:Bybrunnen#TemplateStyles

What needs to still happen in order to decide these two wikis?

+ @Deskana is taking over product owner duties for rollout. There are a few details about near-term and medium term blocking tasks, and I defer to him about those.

I suggested we approach Swedish and then possibly Russian given the conversation. See T164927#3726517 for more information.

@CKoerner_WMF, do you need any help with this task? Is there anything I can do to speed things up?

@Nirmos I need to write up a draft post to take to the Swedish community. A sort of, "Hello, we'd like to turn this thing on. Does anyone object?" sort of thing. I'll have some time today to do that and I'l update this task with a link. :)

Ok, draft written! Please edit and critique!

https://meta.wikimedia.org/wiki/User:CKoerner_(WMF)/TemplateStyles_approach

@Deskana I'd like to provide a rough date for folks if they agree to turning it on. Since we're really close to the holiday I'd love your input on what's realistic. :)

Overall, very good. I am a little (just a little) bit worried about the word "complex" that you use twice. When I hear "complex", I think "complicated". Some people reading this might think we're complicating things, when what we really mean is that TemplateStyles allows non-administrators to write CSS that cannot be written inline.

...But maybe that necessitates explaining what "inline" means in this case, which to the average person actually might be complicated. Can't win :D

Great feedback @Nirmos, thank you. @Elitre also spoke to some clarifying points on the talk page. I gave it another review. If you have a moment, please let me know what you think.

https://meta.wikimedia.org/w/index.php?title=User%3ACKoerner_%28WMF%29%2FTemplateStyles_approach&type=revision&diff=17497797&oldid=17491573

Perfect. It's good to go as far as I'm concerned.

I have the page marked for translation. I now need a time to deploy it. A gentle nudge to Mr. @Deskana for help there.

Translated.

@Nirmos Thank you for the translations! We have a few technical things the team needs to discuss (as mentioned). That will happen early in the new year. I'll get back to you then and let you know where we're at!

@Nirmos, the team is getting ready to deploy the feature to Swedish Wikipedia. (See T176082).

I just posted our message to the Village Pump!

https://sv.wikipedia.org/wiki/Wikipedia:Bybrunnen#Ett_användbart_verktyg_för_mallredigerare

I do want to suggest that we could split this in two so the part about sv.wp can go in this month's column.

I don't know if this helps, but T176082 is/was the task for svwiki deployment.

ruwiki is T188198.