Cats-effect: Ecosystem upgrade megathread

[kubukoz]

Here, we can track the progress of major libraries upgrading to CE3.

That should be a nice way of finding out whether any of them are going to be late with the upgrade, or straight-up impossible to migrate in a relatively source-compatible fashion.

From our readme and some libs I randomly remembered for now:

• Ciris - work being done on the ce3 branch
• Eff
• Fs2 - work being done on the develop branch, already integrated Dispatcher from #1303 snapshots
• Doobie - in progress, looks like Async[ConnectionIO] can't be implemented anymore
• Finch
• Http4s - GitHub project
• Monix / Monix BIO
• Pure Config
• Scala Cache
• Sttp
• ZIO
• Decline - I opened a PR, no obstacles foreseen
• meow-mtl - I think it'll be straightforward, only Ref is used and its API doesn't change much
• fs2-kafka
• fs2-grpc has a CE/FS2 3.0 branch with all tests green :)
• https://github.com/typelevel/scalacheck-effect
• https://github.com/satabin/fs2-data
• https://github.com/circe/circe-fs2
• https://github.com/ovotech/http4s-micrometer-metrics
• Davenportverse (all the cool libraries by @ChristopherDavenport)
• fs2-rabbit has a CE/FS2 3.0 branch with all tests green
• https://github.com/kubukoz/slick-effect - WIP PR
• streamz - WIP at https://github.com/krasserm/streamz/pull/80/files
• https://github.com/typelevel/munit-cats-effect
• catbird - draft is open
• redis4cats - no progress yet

If you have edit rights, feel free to add more details / libraries or change the presentation (I'm thinking a table might be useful at some point).

[benkio]

I came here from your tweet 😅
In cats, I did the following doc PR to collect the libs/projects related to the typelevel ecosystem

https://github.com/typelevel/cats/pull/3609

It may be relevant to this thread I guess
Cheers 😉

[Daenyth]

Are you using cats-effect in production? Let us know what libraries from the ecosystem you're using

In addition to the things mentioned in the above comment;

• https://github.com/typelevel/scalacheck-effect
• https://github.com/satabin/fs2-data
• https://github.com/circe/circe-fs2
• https://github.com/ovotech/http4s-micrometer-metrics
• https://github.com/ChristopherDavenport/log4cats
• https://github.com/ChristopherDavenport/fuuid / fuuid-doobie
• https://github.com/profunktor/fs2-rabbit/
• https://github.com/ChristopherDavenport/cormorant
• https://github.com/kubukoz/slick-effect
• streamz - WIP at https://github.com/krasserm/streamz/pull/80/files

[kubukoz]

@Daenyth added. @ChristopherDavenport -verse is a vital part of it!

btw. you have edit rights, feel free to add them to OP

[mpilquist]

Can we roll fuuid in to cats-effect-std module?

[kubukoz]

Can we roll fuuid in to cats-effect-std module?

I'm all for it. Also a small Random[F], Chris's unique and https://github.com/ChristopherDavenport/system-effect/blob/master/src/main/scala/io/chrisdavenport/system/effect/Environment.scala

[ahjohannessen]

• fs2-grpc has a CE/FS2 3.0 branch with all tests green :)

[kubukoz]

Added, thanks!

[RaasAhsan]

Can we open issues for each library/class we'd like to port to std?

[ChristopherDavenport]

Random - https://github.com/christopherdavenport/random
Cats-Effect-Time - https://github.com/ChristopherDavenport/cats-effect-time (scalajs artifact size complications)

[kubukoz]

@RaasAhsan I like the idea, I can create some later on, unless someone beats me to it

[ghostdogpr]

For ZIO interop, the repo is this one https://github.com/zio/interop-cats

[jbwheatley]

fs2-rabbit has a CE/FS2 3.0 branch with all tests green

[felixbr]

catbird seems to be missing from the list (Finch is using it for example).

I tried to implement the new typeclasses but I'm again blocked by cancelation requirements. My thoughts are here: https://github.com/travisbrown/catbird/pull/267

[felixbr]

redis4cats - no progress so far it seems