Images don't work on macos with podman

[freezeboy]

I tried to run different images on a macbook and got errors about a problem with the Exec format.

I didn't inspect the image layout so I don't know if the binaries are not put in the correct directory or if docker and podman understand differently the CMD instruction

Even a basic podman run -ti --rm nixpkgs/bash bash doesn't work

[freezeboy]

In fact the error is about the architecture.
My computer is using m1 so an aarch64 architecture and the versions published on docker hub is only on x86-64

[daniels]

It works for me, but you need to tell podman machine the architecture of the image with --arch amd64:

podman run --arch amd64 -ti --rm nixpkgs/bash
#=> bash-5.1# 

It might be that this is a recent addition to podman. Podman machine is still running aarch64 but emulates amd64 when asked to.

That said, it would actually be great to have these docker-nixpkgs images generated for aarch64-linux too, so they could run virtualized rather than emulated on Apple Silicon. I've managed to create a nix remote-builder using docker.io/nixpkgs/nix-flakes as a base and running it on podman on my M1, but it's of course terribly slow. While I do need to produce images for x86_64-linux eventually, being able to produce them for aarch64-linux in development and testing, and only build them for x86_64 when it's time to ship, would make an acceptable workflow. And for that I need a aarch64-linux remote-builder as well.

[zimbatm]

Opened #46 to track the aarch64 requirement