Automatic garbage collection

[Tommixe]

Hello,
does the option "--delete-older-than +3" (with the +3 argument) work for you in the garbage collection service?(hosts/common/global/nix.nix file)

gc = {
automatic = true;
dates = "weekly";
# Keep the last 3 generations
options = "--delete-older-than +3";
};

I get an error since the command nix-collect-garbage expect a period, like 14d, and not a number of generations to keep.

gen 08 15:51:56 ws02 nix-gc-start[5075]: removing old generations of profile /nix/var/nix/profiles/system
gen 08 15:51:56 ws02 nix-gc-start[5075]: error: invalid number of days specifier '+3', expected something like '14d'
gen 08 15:51:56 ws02 nix-gc-start[5075]: Try '/nix/store/yskyk1xf37fzf525xdppblg0qlji2nrf-nix-2.24.11/bin/nix-collect-garbage --help' for more information.
gen 08 15:51:56 ws02 systemd[1]: nix-gc.service: Main process exited, code=exited, status=1/FAILURE

Looking at the documentation it seems that only the command nix-env --delete-generations accept + argument.

Thanks for your amazing work!
Tommaso