Hi. Is there a guide out there for cross-compiling

pex_binary

for ARM from

x86_64

machines? I'm trying to setup a

docker_environment

for arm64, but am seeing the error:

NoFallbackEnvironmentError: The Docker environment `linux_arm` is specified in the `environment` field from the target <target>, but it cannot be used because the local host has the platform `linux_x86_64` and the Docker environment has the platform Platform.linux_arm64.

Consider setting the field `fallback_environment` for the target //:linux-py12-arm, such as to a `docker_environment` target that sets `platform` to `linux_x86_64`. Alternatively, consider not explicitly setting the field `platform` for the target //:linux-py12-arm because the default behavior is to use the CPU architecture of the current host for the platform (although this requires that the docker image supports that CPU architecture).

Using pants 2.24.1

I've done it with the (older)

complete_platforms

option: https://www.pantsbuild.org/dev/docs/python/overview/pex#setting-the-target-platforms-for-a-pex

Thanks. I'll try that next. Hopefully, it's more reliable