Mac APFS volume cannot be unmounted (script)

[shriharip]

Error

Error: 
   0: Error reverting
   0: Action `create_or_merge_nix_config` errored
      Remove file `/etc/nix/nix.conf`

      Action `create_apfs_volume` errored
      Failed to execute command with status 1 `"/usr/sbin/diskutil" "apfs" "deleteVolume" "Nix Store"`, stdout: Started APFS operation
      Deleting APFS Volume from its APFS Container
      Unmounting disk1s7
      The volume "Nix Store" on disk1s7 couldn't be unmounted because it is in use by process 1310 (script)

      stderr: Error: -69888: Couldn't unmount disk

Metadata

key	value
version	0.16.1
os	macos
arch	x86_64

[Hoverbear]

Similar to https://github.com/DeterminateSystems/nix-installer/issues/836