Sops modules not found

1

I’m trying to use sops-nix according to the instructions at GitHub - Mic92/sops-nix: Atomic secret provisioning for NixOS based on sops. All goes well until step 5. When I add <sops-nix/modules/sops> to the import, it complains upon rebuild with file 'sops-nix/modules/sops' was not found in the Nix search path.

I went over the instructions a few times and don’t think I
missed anything. I have, in my flake.nix inputs section

sops-nix.url = "github:Mic92/sops-nix";

and the outputs

  outputs = { self, nixpkgs, home-manager, sops-nix, ... } @inputs: 
    let
      system = "x86_64-linux";
      lib = nixpkgs.lib;
      pkgs = nixpkgs.legacyPackages.${system};
    in {
    nixosConfigurations."nixos" = lib.nixosSystem {
        inherit system;
        specialArgs = { inherit inputs; };
        modules = [ 
          ./configuration.nix
          sops-nix.nixosModules.sops
        ];
      };

I’d appreciate some help. Thanks.

Edit: In the vimjoyer video referenced by the sops-nix instructions, it suggests using inputs.sops-nix.nixosModules.sops in the imports section. That failed with a different error:

The option `sops.gnupg.home' in `/nix/store/asymc3nsl739p1wwr0w6xbjnqs3qb94p-source/flake.nix' is already declared in `/nix/store/za3nda9aii5vdryyl9v38idldwxpjcaq-source/configuration.nix'
1 Like
2

The <...> syntax in Nix is for “find this in the Nix search path”. That snippet is intended for if you install sops-nix using a nix-channel (not using flakes).

The modules = [ ... sops-nix.nixosModules.sops ] should already be sufficient for adding the module to your configuration.

3

Thanks. If I try as use suggest I get a sops-nix undefined variable error. If I change it to inputs.sops-nix.nixosModules.sops, I get the error

The option `sops.gnupg.home' in `/nix/store/asymc3nsl739p1wwr0w6xbjnqs3qb94p-source/flake.nix' is already declared in `/nix/store/za3nda9aii5vdryyl9v38idldwxpjcaq-source/configuration.nix'
4

To discuss the Nix code a bit, the line:

outputs = { self, nixpkgs, home-manager, sops-nix, ... } @inputs:

The { self, sops-nix, ... }@inputs part means that both sops-nix and inputs.sops-nix refer to the same value.

“The option … is already declared” suggests to me that you’re importing sops-nix.nixosModules.sops twice. – You should import it either in the modules that you’re passing to lib.nixosSystem, or in your configuration.nix, but not in both.

5

It suggests that to me as well, but this is everything I have related to sops in my configs.

flake.nix
8:    sops-nix.url = "github:Mic92/sops-nix";
9:    sops-nix.inputs.nixpkgs.follows = "nixpkgs";
25:  outputs = { self, nixpkgs, home-manager, sops-nix, ... } @inputs:
36:          sops-nix.nixosModules.sops

configuration.nix
12:      inputs.sops-nix.nixosModules.sops
28:      #keyFile = "/var/lib/sops-nix/key.txt";
6

Right, so delete one of those.

Either remove sops-nix.nixosModules.sops from your flake.nix, or remove the inputs.sops-nix.nixosModules.sops from your configuration.nix.

7

I had misunderstood the language then. I thought the output in the flake.nix was passed as input to the configuration.nix file.

8

Thank you so much. I removed the line from configuration.nix and it built fine. Onward to the next step :slight_smile: