Does anyone have the recommended nix.conf file to use for macOS Monterey i7?

Following a few different tutorials, my current .conf file looks like:

build-users-group = nixbld
substituters        = https://hydra.iohk.io https://iohk.cachix.org https://cache.nixos.org/
trusted-public-keys = hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ= iohk.cachix.org-1:DpRUyj7h7V830dp/i6Nti+NEO2/nhblbov/8MW7Rqoo= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=volume

However, https://github.com/input-output-hk/plutus-apps#nix-1 for macOS also recommends adding:

sandbox = true
extra-sandbox-paths = /System/Library/Frameworks /System/Library/PrivateFrameworks /usr/lib /private/tmp /private/var/tmp /usr/bin/env

Any other working steps are appreciated. I wouldn't follow tutorials for the M1 i'm assuming too. Thanks!

Ref: [https://www.punkbit.com/hacking/plutus-developer-environment-setup-on-macos-monterey/]

1 Answer 1


macOS nix setup on x86_64 (Intel, AMD) and aarch64 (Apple Silicon) should be identical. Running the installer from the official website, should get you a proper install.

You do want to add the iohk substituter to get access to the cached builds:


I'm fairly sure that the iohk.cachix.org instance is defunct (or not updated anymore really). So it should be fairly safe to remove the following


Please don't enable sanboxing on macOS, while that is in principle a good idea, it will lead to crashes with complex nix expressions. See Status of macOS | nixos/nixpkgs#116341


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