How to fix Axiom on arm Macs
You need 3 terminal commands. First, make sure you have Axiom downloaded, and also the Imgui-Java natives https://github.com/SpaiR/imgui-java/actions/runs/5554721970?pr=190 (requires a github account (there is a section "Artifacts" at the bottom. Inside of there, click on "native-libraries". That should start the download. It is a zip, and this one should be unpacked by double clicking it)). Make sure both downloads are in the same folder, and open a Terminal in that folder (type cd and drag the folder into terminal (and click enter)).
Then, run the following commands:
Recreate a part of the folder structure as in the Axiom jar (needed for editing the zip later)
mkdir -p io/imgui/java/native-bin
Then, copy over the Imgui-Java ARM natives and rename it
cp native-libraries/libimgui-javaarm64.dylib io/imgui/java/native-bin/libimgui-java64.dylib
Lastly, update the Axiom jar. It'll give a few warnings, but it works so you can ignore them.
zip -u Axiom-b1.0.4-for-MC1.20.1.jar io/imgui/java/native-bin/libimgui-java64.dylib (make sure the filename for axiom is correct, the latest version is posted in #announcements)
Now you can put the Axiom jar in your mods folder and it should work. Any other files and folders created can be deleted.
Here is a video you can follow along with: https://cdn.discordapp.com/attachments/1139191845457506375/1139740572555411567/axiom_m1_fix.mp4
credit to myokan, twirre.me, ic22487 and seththecat