I'm trying to run Arch Linux on an M3 iMac, but it doesn't appear to be supported yet. Are there any Linux distributions or setups that provide a similar Arch-like experience on this hardware, either directly on the machine or through a virtual machine?
3 Answers
If you mainly want the Arch workflow rather than native performance, try running Arch Linux in a virtual machine. That can give you the same package manager, repositories, and desktop experience, although hardware integration and performance won’t be identical to a bare-metal installation.
At the moment, M3-based Macs are generally a poor choice for native Linux because driver and kernel support is still incomplete. Waiting for compatibility to improve—or using hardware with established Linux support—will be less frustrating than trying to force an unsupported installation.
Bare-metal Linux support for M3 Macs isn’t available yet, so there isn’t currently a true Arch-based replacement that will install and work normally. The Asahi Linux project and its Arch-based userspace are possibilities for supported Apple Silicon models, but M3 compatibility still needs more development.

So it sounds like I’ll need to wait for M3 support, or use a virtual machine in the meantime.