[Question] Can I run the task with macos_instance VMs but run on the github runner ubuntu-latest?

[littleGnAl]

Say that I have a GitHub action file .github/workflows/cirrus.yml like:

name: Run Cirrus Tasks

on: [push, pull_request]

jobs:
  cirrus:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    - uses: cirruslabs/cirrus-action@master

And a .cirrus.yml like:

macos_instance:
  image: ghcr.io/cirruslabs/macos-ventura-base:latest

task:
  script: echo "Hello World from macOS!"

When the action run, is the script: echo "Hello World from macOS!" actually run on ubuntu-latest or ghcr.io/cirruslabs/macos-ventura-base:latest?

[fkorotkov]

Unfortunately, in order to run macos_instances you need a macOS host. Cirrus CLI uses Tart which only works on macOS hosts with M1/M2 chips.