Fixing install-nix-action once again based on a something @fumieval noted in #140. Apparently upgrading to install-nix-action@v22 should fix the following issue for OSX:
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Nix won't work in active shell sessions until you restart them.
Could not set environment: 150: Operation not permitted while System Integrity Protection is engaged
Error: Process completed with exit code 150.
Fixing
install-nix-actiononce again based on a something @fumieval noted in #140. Apparently upgrading toinstall-nix-action@v22should fix the following issue for OSX: