Can a project that uses stable coroutines (`1.1.1`...

# coroutines

[zak.taccardi]

Can a project that uses stable coroutines (1.1.1) include a library that uses experimental coroutines (0.30.2)?

[bdawg.io]

You need to choose which one will be included (I’d recommend stable). Any 1.1.1 APIs should work with 0.30.2 if there’s still binary compatibility (the method wasn’t removed or changed in a backwards-incompatible way)

[zak.taccardi]

I'm getting a runtime error of Failed resolution of a kotlinx.coroutines.experimental.CompletableDeferredKt from the 3rd party library that internally uses 0.30.2 coroutines

[bdawg.io]

Oh right. Yeah, kotlinx.coroutines.experimental.* was moved to just kotlinx.coroutines.* which is not binary-compatible

[louiscad]

So the simple answer is no. Is that library open source? Maybe you can link it?

[zak.taccardi]

https://github.com/RedApparat/Fotoapparat

[zak.taccardi]

Currently on 2.3.1, which depends on pre-stable coroutines

[zak.taccardi]

2.6.1 brings along Kotlin 1.3 and stable coroutines, but also AndroidX which we're not ready to bring in yet

[zak.taccardi]

https://github.com/RedApparat/Fotoapparat/issues/340

[zak.taccardi]

Ideally we'd be able to temporarily run stable and pre-release coroutines alongside each other, but I guess that isn't possible

[zak.taccardi]

My team works on an internal company SDK, and we can't force our clients to upgrade to AndroidX yet

[louiscad]

@zak.taccardi Here's a working way to migrate to AndroidX in minutes: https://github.com/LouisCAD/Splitties/blob/61e9f223219f0c1c894be77c334d826413ed720c/CHANGELOG.md#migration-to-androidx

[louiscad]

And also, for the longer term, here's a WIP project to have the Camera2 API with coroutines without technical debt: https://github.com/Beepiz/CameraCoroutines
I'll work on it in the coming weeks/months and hopefully release a version that properly implements structured concurrency, has a nice API (it's currently a prototype, started before structured concurrency) and redirects all errors correctly. Watch releases on it if you're interested.

[zak.taccardi]

Can AndroidX and the support library live side by side in the same app? I'm on an SDK team inside my company, and we can't force my company's main app to upgrade to AndroidX before they're ready

[louiscad]

An app that uses AndroidX dependent dependencies needs to be migrated to AndroidX itself. It can also use libraries dependent on support libraries with jetifier. So you need to first migrate the apps, then migrate all the libraries. You should not wait to do so IMHO.

[louiscad]

The script instructions I linked above for AndroidX migration (as an alternative to IDE's slow option) rely on a script made in Kotlin that you're likely to understand yourself. Worked perfectly for several projects in my case, and for some other persons which gave positive feedback too.

[elizarov]

You can include both stable & experimental coroutines, but you’ll need some gradle trickery. The simplest approach would be to download the old experimental coroutines .jar and include it via a file dependency.