these changes were generated with nixq 0.0.2, by running
nixq ">> lib.mdDoc[remove] Argument[keep]" --batchmode nixos/**.nix
nixq ">> mdDoc[remove] Argument[keep]" --batchmode nixos/**.nix
nixq ">> Inherit >> mdDoc[remove]" --batchmode nixos/**.nix
two mentions of the mdDoc function remain in nixos/, both of which
are inside of comments.
Since lib.mdDoc is already defined as just id, this commit is a no-op as
far as Nix (and the built manual) is concerned.
this commit removes the static assignments for the ntfy-sh user and
group. furthermore, it removes some tmpfiles.d rules which where
initially put in place by https://github.com/NixOS/nixpkgs/pull/234811.
these are however not required, as ntfy-sh will automatically create the
required files and systemd automatically handles the migration process.
A nixosTest is added to demonstrate that the migration is working
reliably.
This also fixes an issue with where systemd would sometimes not start
ntfy-sh. The tmpfiles rules in combination with impermanence caused `/
var/lib/ntfy-sh` to be a directory when it should have been a symlink.
