Please accept ownership of diagrams-gi-cairo

[AshleyYakeley]

I've created diagrams-gi-cairo, a fork of the diagrams-cairo repository to work with haskell-gi instead of gtk2hs. As you might expect, the actual code changes are quite minor, mostly it's wrangling packages and modules.

It seems to work with the one diagram I tried.

Please accept ownership of the project. Think of this as a PR for the addition of an entire repository.

• Copy the repository into the diagrams team
• Review the changes I've made
• Adjust the documentation, etc.
• Probably, put back the version bounds in the .cabal file
• Make a release to Hackage

[byorgey]

Thanks! Hope to take a look soon.

[byorgey]

I've forked diagrams-gi-cairo into the diagrams organization. It might take me a bit longer to get a chance to look through it, make any adjustments, and release it. (Though it doesn't have to be me.)

[YellowOnion]

Pretty sure the cairo package is somewhat dead as it only supports the gtk3 only gtk2hs project, and with everything moving to gtk4, the only way get diagrams working, and future proof is to use the gi-cairo package.

Can you look at getting this fixed up and merged? I want to try diagrams in my gtk4 app, but this is a blocker.

[leftaroundabout]

@YellowOnion well, you can already use diagrams-gi-cairo... what exactly are you requesting here?

There is a point to be made that diagrams-cairo should not be the recommended backend anymore, and that the documentation ought to defer to diagrams-gi-cairo instead.

Also, last time I tried the GI version (about a year ago) there were problems in particular for text. Haven't gotten around to looking closer into that (not sure if it's actually the fault of gi-cairo or I was just doing something nonstandard that just happened to work in diagrams-cairo). Quite possible there are some things to be fixed in diagrams-gi-cairo, but then you should open concrete issues for those.

[YellowOnion]

@YellowOnion well, you can already use diagrams-gi-cairo... what exactly are you requesting here?

Oh sorry, I see no references to this sub project in the main documentation, and somehow missed that it's on hackage, saw this thread, so I assumed the sub project was abandoned based on this open bug report...I guess I was getting tired.

I'll have test of that, Still brain storming ways to get variable width strokes (trying to do some calligraphic rendering from a graphics tablet).

[AshleyYakeley]

Can this issue be closed, if the diagrams group has taken ownership?

[byorgey]

Yes, I think I just forgot to close this issue. And good point about updating documentation to refer to diagrams-gi-cairo instead of diagrams-cairo, I will keep that in mind as I update things going forward.