Use file from fetchurl in systemd service

Help
1

I want to use a single file from the internet as a parameter for the command in a systemd service.
Can I use fetchurl to do that? I.e.:

let
  myFile = fetchurl { url = "foo.com/file.conf"; };
in systemd.services.foo = {
    script = ''
        foo -i ${file}
    '';
}

But that returns a .drv file. How do I get to the file from the URL?

2

The answer seems to be file.outPath

3

Uhh no. "${foo}" is exactly the same as foo.outPath or "${foo.outPath}". But note that you used file while your variable was named myFile, and file is in fact the name of a package in pkgs, in case you’ve used with pkgs;

4

Whoops thats right. I meant to write myFile there. The entire thing is supposed to be entirely hypothetical.