curl https://nixos.org/nix/install | sh
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100  2358  100  2358    0     0   1566      0  0:00:01  0:00:01 --:--:--  1567
downloading Nix 1.11.15 binary tarball for x86_64-darwin from 'https://nixos.org/releases/nix/nix-1.11.15/nix-1.11.15-x86_64-darwin.tar.bz2' to '/var/folders/9s/l0ks1r093p786j3nkp5dzv080000gp/T/nix-binary-tarball-unpack.XXXXXXXXXX.hek3CNuE'...
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100 25.8M  100 25.8M    0     0  32735      0  0:13:48  0:13:48 --:--:-- 36612
Switching to the Multi-User Darwin Installer
Welcome to the Multi-User Nix Installation

This installation tool will set up your computer with the Nix package
manager. This will happen in a few stages:

1. Make sure your computer doesn't already have Nix. If it does, I
   will show you instructions on how to clean up your old one.

2. Show you what we are going to install and where. Then we will ask
   if you are ready to continue.

3. Create the system users and groups that the Nix daemon uses to run
   builds.

4. Perform the basic installation of the Nix files daemon.

5. Configure your shell to import special Nix Profile files, so you
   can use Nix.

6. Start the Nix daemon.

Would you like to see a more detailed list of what we will do?
No TTY, assuming you would say yes :)

We will:

 - make sure your computer doesn't already have Nix files
   (if it does, I  will tell you how to clean them up.)
 - create local users (see the list above for the users we'll make)
 - create a local group (nixbld)
 - install Nix in to /nix
 - create a configuration file in /etc/nix
 - set up the "default profile" by creating some Nix-related files in
   /var/root
 - back up /etc/profile to /etc/profile.backup-before-nix
 - update /etc/profile to include some Nix configuration
 - back up /etc/bashrc to /etc/bashrc.backup-before-nix
 - update /etc/bashrc to include some Nix configuration
 - back up /etc/zshrc to /etc/zshrc.backup-before-nix
 - update /etc/zshrc to include some Nix configuration
 - load and start a LaunchDaemon (at /Library/LaunchDaemons/org.nixos.nix-daemon.plist) for nix-daemon

Ready to continue?
No TTY, assuming you would say yes :)

---- let's talk about sudo -----------------------------------------------------
This script is going to call sudo a lot. Normally, it would show you
exactly what commands it is running and why. However, the script is
run in  a headless fashion, like this:

  $ curl https://nixos.org/nix/install | sh

or maybe in a CI pipeline. Because of that, we're going to skip the
verbose output in the interest of brevity.

If you would like to
see the output, try like this:

  $ curl -o install-nix https://nixos.org/nix/install
  $ sh ./install-nix


---- hardware report -----------------------------------------------------------
           Cores:	4

---- Nix config report ---------------------------------------------------------
        Temp Dir:	/var/folders/9s/l0ks1r093p786j3nkp5dzv080000gp/T/tmp.XXXXXXXXXX.vTd97nVc
        Nix Root:	/nix
     Build Users:	4
  Build Group ID:	30000
Build Group Name:	nixbld

build users:
    Username:	UID
     nixbld1:	30001
     nixbld2:	30002
     nixbld3:	30003
     nixbld4:	30004

Ready to continue?
No TTY, assuming you would say yes :)

~~> Setting up the build group nixbld
            Exists:	Yes

~~> Setting up the build user nixbld1
            Exists:	Yes
          IsHidden:	Yes
   Logins Disabled:	Yes
  Member of nixbld:	Yes
    PrimaryGroupID:	30000

~~> Setting up the build user nixbld2
            Exists:	Yes
          IsHidden:	Yes
   Logins Disabled:	Yes
  Member of nixbld:	Yes
    PrimaryGroupID:	30000

~~> Setting up the build user nixbld3
            Exists:	Yes
          IsHidden:	Yes
   Logins Disabled:	Yes
  Member of nixbld:	Yes
    PrimaryGroupID:	30000

~~> Setting up the build user nixbld4
            Exists:	Yes
          IsHidden:	Yes
   Logins Disabled:	Yes
  Member of nixbld:	Yes
    PrimaryGroupID:	30000

---- oh no! --------------------------------------------------------------------
Something went wrong, and I didn't find Nix installed at
/nix/store/dgwz3dxdzs2wwd7pg7cdhvl8rv0qpnbj-nix-1.11.15.

We'd love to help if you need it.

If you can, open an issue at https://github.com/nixos/nix/issues

Or feel free to contact the team,
 - on IRC #nixos on irc.freenode.net
 - on twitter @nixos_org

---- oh no! --------------------------------------------------------------------
Jeeze, something went wrong. If you can take all the output and open
an issue, we'd love to fix the problem so nobody else has this issue.

:(

We'd love to help if you need it.

If you can, open an issue at https://github.com/nixos/nix/issues

Or feel free to contact the team,
 - on IRC #nixos on irc.freenode.net
 - on twitter @nixos_org