home-manager flake fails to update when --impure is required

[worldofgeese]

What did you expect to happen?

When using a home-manager flake, the flake should fully update without user intervention

What actually happened?

The flake update fails:

―― 16:25:24 - home-manager ―――――――――――――――――――――――――――――――――――――――――――――――――――――
error: access to absolute path '/home/taohansen/doom.d' is forbidden in pure eval mode (use '--impure' to override)

Additional Details

• Which operating system or Linux distribution are you using?
  Arch Linux
• How did you install Topgrade?
  Nix
• Which version are you running?
  9.0.1