Nix on MacOS catalina workaround

workaround.sh

# taken from https://github.com/NixOS/nix/issues/2925#issuecomment-539570232

#1. Check if /nix exists.

#	If not, run 

echo 'nix' | sudo tee -a /etc/synthetic.conf

 #then reboot.

#2. Create an APFS volume for Nix:
	
	sudo diskutil apfs addVolume disk1 APFSX Nix -mountpoint /nix
	sudo diskutil enableOwnership /nix
	sudo chflags hidden /nix  # Don't show the Nix volume on the desktop
	echo "LABEL=Nix /nix apfs rw" | sudo tee -a /etc/fstab


#3. Install Nix:

sh <(curl https://nixos.org/nix/install)

#4. configure nix

# ensure that the following line is in your bashrc or zshrc, depending on which you use
if [ -e /Users/YOURUSERNAME/.nix-profile/etc/profile.d/nix.sh ]; then . /Users/YOURUSERNAME/.nix-profile/etc/profile.d/nix.sh; fi # added by Nix installer

# open a new terminal window and run these commands
nix-channel --add https://nixos.org/channels/nixos-20.03 nixos
nix-channel --add https://nixos.org/channels/nixos-20.03 nixpkgs
nix-channel --update