sops-nix: basic key setup

flake.nix

@@ -29,6 +29,10 @@
       flake = false;
       url = "git+ssh://gitea@git.orlives.de:2342/schmittlauch/home-manager_secrets.git";
     };
+    sops-nix = {
+      url = "github:Mic92/sops-nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
     nix-direnv = {
       url = "github:nix-community/nix-direnv";
       inputs.nixpkgs.follows = "nixpkgs";
@@ -51,6 +55,7 @@
       treefmt-nix,
       nix-darwin,
       angrr,
+      sops-nix,
       ...
     }@inputs:
     let
@@ -81,6 +86,7 @@
         };
       defaultModules = system: [
         inputInjection
+        sops-nix.nixosModules.sops
 
         # for some reason, `imports`-ing the home-manager module via inputInjection
         # from a sub-module causes infinite recursion, so importing it here instead
@@ -99,6 +105,7 @@
           modules = [
             {
               imports = [
+                sops-nix.homeManagerModules.sops
                 ./home/common.nix
                 ./home/${confName}.nix
               ];