nix run nix-darwin -- switch --flake . -> error: unexpected files in /etc, aborting installation about nix-installer

[Hoverbear]

I think nix --extra-experimental-features "nix-command flakes" run nix-darwin -- switch --flake . might do it?

[byrongibson]

Thanks, same error though.

%> nix --extra-experimental-features "nix-command flakes" run nix-darwin -- switch --flake .
building the system configuration...
Password:
error: Unexpected files in /etc, aborting activation
The following files have unrecognized content and would be overwritten:

  /etc/nix/nix.conf
  /etc/zshenv

Please check there is nothing critical in these files, rename them by adding .before-nix-darwin to the end, and then try again.
%>

Any idea why isn't it recognizing its own nix.conf? Here are the contents btw, just the autogenerated defaults from the installer:

# Generated by https://github.com/DeterminateSystems/nix-installer.
# See `/nix/nix-installer --version` for the version details.

build-users-group = nixbld
experimental-features = nix-command flakes repl-flake
bash-prompt-prefix = (nix:$name)\040
max-jobs = auto
extra-nix-path = nixpkgs=flake:nixpkgs
upgrade-nix-store-path-url = https://install.determinate.systems/nix-upgrade/stable/universal
/etc/nix/nix.conf (END)

[byrongibson]

Oh wait, renaming /etc/nix/nix.conf back to /etc/nix/nix.conf.before-nix-darwin and then rerunning that command fixed it:

%> nix --extra-experimental-features "nix-command flakes" run nix-darwin -- switch --flake .
building the system configuration...
Password:
user defaults...
setting up user launchd services...
setting up /Applications/Nix Apps...
setting up pam...
applying patches...
setting up /etc...
system defaults...
setting up launchd ng service org.nixos.activate-system
reloading service org.nixos.nix-daemon
reloading nix-daemon...
waiting for nix-daemon
waiting for nix-daemon
configuring networking...
%> 

New /etc/nix/nix.conf:

# WARNING: this file is generated from the nix.* options in
# your nix-darwin configuration. Do not edit it!
allowed-users = *
auto-optimise-store = false
build-users-group = nixbld
builders =
cores = 0
experimental-features = nix-command flakes
extra-experimental-features = nix-command
extra-sandbox-paths =
max-jobs = auto
require-sigs = true
sandbox = false
sandbox-fallback = false
substituters = https://cache.nixos.org/
trusted-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=
trusted-substituters =
trusted-users = root

/etc/nix/nix.conf (END)

[janurskremer]

I have the same issue when I do darwin-rebuild switch --flake . each time after rebooting my system.