What happened?

On launch the fabric menu pops up and throws an Iris version mismatch for Distant Horizons <2.2.0 despite having 2.2.0a installed

Screenshots

No response

Log output

[16:00:06] [main/INFO]: Loading Minecraft 1.21 with Fabric Loader 0.16.2
[16:00:06] [main/WARN]: Mod resolution failed
[16:00:06] [main/INFO]: Immediate reason: [NEG_HARD_DEP iris 1.8.0-beta.2+mc1.21.1 {breaks distanthorizons @ [<=2.2.0]}, ROOT_FORCELOAD_SINGLE distanthorizons 2.2.0-a, ROOT_FORCELOAD_SINGLE iris 1.8.0-beta.2+mc1.21.1]
[16:00:06] [main/INFO]: Reason: [NEG_HARD_DEP iris 1.8.0-beta.2+mc1.21.1 {breaks distanthorizons @ [<=2.2.0]}]
[16:00:06] [main/INFO]: Fix: add [], remove [distanthorizons 2.2.0-a, distanthorizons 2.2.0-a], replace []
[16:00:06] [main/ERROR]: Incompatible mods found!
net.fabricmc.loader.impl.FormattedException: Some of your mods are incompatible with the game or each other!
A potential solution has been determined, this may resolve your problem:
- Remove mod 'Distant Horizons' (distanthorizons) 2.2.0-a (/Users/tom/Library/Application Support/PrismLauncher/instances/Vanilla-/.minecraft/mods/DistantHorizons-2.2.0-a-1.21.1-neo-fabric.jar).
- Remove mod 'Distant Horizons' (distanthorizons) 2.2.0-a (/Users/tom/Library/Application Support/PrismLauncher/instances/Vanilla-/.minecraft/mods/DistantHorizons-2.2.0-a-1.21.1-neo-fabric.jar).
More details:
- Mod 'Iris' (iris) 1.8.0-beta.2+mc1.21.1 is incompatible with version 2.2.0 or earlier of mod 'Distant Horizons' (distanthorizons), but a matching version is present: 2.2.0-a!
at net.fabricmc.loader.impl.FormattedException.ofLocalized(FormattedException.java:51) ~[fabric-loader-0.16.2.jar:?]
at net.fabricmc.loader.impl.FabricLoaderImpl.load(FabricLoaderImpl.java:196) ~[fabric-loader-0.16.2.jar:?]
at net.fabricmc.loader.impl.launch.knot.Knot.init(Knot.java:146) ~[fabric-loader-0.16.2.jar:?]
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:68) [fabric-loader-0.16.2.jar:?]
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) [fabric-loader-0.16.2.jar:?]
at org.prismlauncher.launcher.impl.StandardLauncher.launch(StandardLauncher.java:87) [NewLaunch.jar:?]
at org.prismlauncher.EntryPoint.listen(EntryPoint.java:129) [NewLaunch.jar:?]
at org.prismlauncher.EntryPoint.main(EntryPoint.java:70) [NewLaunch.jar:?]
Process exited with code 1.

Minecraft Version

Minecraft 1.21

Iris Version

iris 1.8.0-beta.2+mc1.21.1

Operating System

MacOS

What is your GPU?

Apple M1

Additional context

No response

from the logs it looks like the incompatibility is set to ≤2.2.0 instead of <2.2.0 or ≤2.1.x

i checked the fabric.mod.json in all the multiloader branches
multiloader-1.21, multiloader-1.20.6 and multiloader-1.20.1 all set the incompatibility to <=2.0.1
but multiloader-new, which i assume was the one distributed for 1.21 and above (since it's marked as compatible with these versions), set the incompatibility to <=2.2.0
EDIT: it multiloader-new was just corrected to <=2.1.99 so i guess we just have to wait until it's rolled out

the new release has been rolled out, you can close the issue @TeeJayBaker