Thanks to Lachlan Donald, there is now a Packer Builder for Anka. The Anka Packer builder is able to create macOS Anka VMs starting from a macOS installer app.
The builder builds a fully functional macOS VM from scratch, provisioned with Anka PV network and block drivers for near-native build and test performance. You can configure CPU cores, RAM and disk size. Quickly set up your Anka VM and then use ‘anka run’ to configure it with your dependencies.
Download it from GitHub.