readme: update determinate installer instructions (#1642)

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Michael Hoang 2025-11-18 19:02:47 +00:00 committed by GitHub
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@ -18,9 +18,9 @@ As the official Nix installer does not include an automated uninstaller, and man
* The [Nix installer from Determinate Systems](https://github.com/DeterminateSystems/nix-installer?tab=readme-ov-file#determinate-nix-installer) is only recommended for use with flake-based setups.
It can install one of two distributions of Nix:
* To install the **recommended** vanilla upstream [Nix](https://nixos.org), you will need to explicitly say `no` when prompted to install `Determinate Nix`.
* To install the **recommended** vanilla upstream [Nix](https://nixos.org), you will need to explicitly pass the `--prefer-upstream-nix` flag to the installer.
* When run with the `--determinate` flag, it will install the [Determinate](https://docs.determinate.systems/) distribution.
* When run without the `--prefer-upstream-nix` flag, it will install the [Determinate](https://docs.determinate.systems/) distribution.
As Determinate manages the Nix installation itself, you will need to set `nix.enable = false;` in your configuration to disable nix-darwins own Nix management.
Some nix-darwin functionality that relies on managing the Nix installation, like the `nix.*` options to adjust Nix settings or configure a Linux builder, will be unavailable.