# update config
home-manager switch

# update nixpkgs in flake
nix flake update
# run home-manager switch after

# nixfmt (from hm base directory)
nixfmt $(find . -name "*.nix")

 sudo su
 nix-env --install --file '<nixpkgs>' --attr nix cacert -I nixpkgs=channel:nixpkgs-unstable
 systemctl daemon-reload
 systemctl restart nix-daemon