Disko-install still requires Internet in the offline installer

[candsastle]

I've always noticed that disko-install with the offline installer code (e.g. the one found in the documentation: https://github.com/nix-community/disko/blob/master/tests/disko-install/default.nix) still uses the Internet when starting up.

Basically, when I run the disko-install command in the installer image, it runs a bunch of "unpacking from [online cache] into cache" or something to that effect before it runs the rest of the disko instructions. It doesn't download literally every dependency, thankfully, but it apparently still needs the Internet for some things.

Is there a way I can make it fully offline?

Here's a screenshot of what I'm talking about after I run the disko-install command (setup is a wrapper script I made around disko-install)