• Add options:
  • enable
  • davUser (default: "davfs2")
  • davGroup (default: "davfs2)
• Add davfs2 user or group if they are not specified in the
  configuration

Motivation for this change

cc @peti

pkgs.davfs2 does not work out-of-the-box because I need to add manually the user davfs2 and the group davfs2 for the daemon.
With this change, if the option davUser and davGroup are not specified, it will add the default required user and group.

I tested every possible configuration of davUser/davGroup and their impacts on the /etc/passwd and /etc/group.

Things done

• Tested using sandboxing (nix.useSandbox on NixOS, or option build-use-sandbox in nix.conf on non-NixOS)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nox --run "nox-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Fits CONTRIBUTING.md.