Why does my flake keep trying to access cuda-maintainers.cachix

I know that the cuda-maintainers cache is now cache.nixos-cuda.org, and I’ve modified my configuration accordingly. There is literally no reference on my filesystem to cuda-mainters. Never-the-less, when I enter a flake with cuda stuff, it still tries to access cuda-maintainers, resulting in:

arning: unable to download 'https://cuda-maintainers.cachix.org/nix-cache-info': HTTP error 401

         response body:

         Binary cache cuda-maintainers doesn't exist or you're not authorized to access it. Check the name for typos and/or provide an auth token. Contact support on https://cachix.org if you're stuck.

Here is a flake with most bits removed. If I try nix develop it results in the above error.

{
  inputs = {
    nixpkgs = {
      url = "github:nixos/nixpkgs/nixos-unstable";
    };
    flake-utils = {
      url = "github:numtide/flake-utils";
    };
  };
  outputs =
    { nixpkgs, flake-utils, ... }:
    flake-utils.lib.eachDefaultSystem (
      system:
      let
        pkgs = import nixpkgs {
          inherit system;
          config = {
            allowUnfree = true;
            cudaSupport = true;
            cudaVersion = "12";
          };
        };
        nvidiaPackage = pkgs.linuxPackages.nvidiaPackages.stable;
      in
      {
        devShell = pkgs.mkShell {
          name = "graphics";
          packages = builtins.attrValues {
            inherit (pkgs)
              cudatoolkit
              ;
            inherit (pkgs.linuxPackages) nvidia_x11;
            inherit (pkgs.fmt) dev;
            inherit (pkgs.cudaPackages) cuda_cudart cudnn;
            inherit (pkgs.stdenv) cc;
          };

          shellHook = ''
            export CUDA_PATH=${pkgs.cudatoolkit}
            export LD_LIBRARY_PATH=${pkgs.linuxPackages.nvidia_x11}/lib:${pkgs.ncurses5}/lib
            export EXTRA_LDFLAGS="-L/lib -L${pkgs.linuxPackages.nvidia_x11}/lib"
            export EXTRA_CCFLAGS="-I/usr/include"
          '';

          postShellHook = "";
        };
      }
    );
}

And this is my cachix.nix

{
  nix.settings = {
    substituters = [
      "https://cache.nixos.org"
      "https://cache.iog.io"
      "https://cache.nixos.org/"
      "https://cache.nixos-cuda.org/"
      "https://nix-community.cachix.org"
    ];
    trusted-public-keys = [
      "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
      "hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ="
      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
      "cache.nixos-cuda.org:74DUi4Ye579gUqzH4ziL9IyiJBlDpMRn9MBN8oNan9M="
    ];
    extra-substituters = [ "https://yazi.cachix.org" ];
    extra-trusted-public-keys = [ "yazi.cachix.org-1:Dcdz63NZKfvUCbDGngQDAZq6kOroIrFoyO064uvLh8k=" ];
  };
}

How do your /etc/nix/nix conf and ~/.config/nix/nix.conf look like?

Thank you. It was lurking in ~/.config/nix/nix.conf. I don’t know where this file comes from, I must have created it in the dawns of time. I also was unaware of the -. flag in ripgrep, which is why I wasn’t finding the files.