feat: Manage secrets w/ sops-nix

Closes #1

flake.nix

@@ -11,6 +11,8 @@
     home-manager.url = "github:nix-community/home-manager";
 
     niri.url = "github:sodiboo/niri-flake";
+
+    sops-nix.url = "github:Mic92/sops-nix";
   };
 
   outputs = { nixpkgs, ... }@inputs:
@@ -47,8 +49,9 @@
                 inputs.self.nixosModules.default
         
                 inputs.disko.nixosModules.disko
+                inputs.sops-nix.nixosModules.sops
                 inputs.impermanence.nixosModules.impermanence
-        
+
                 # Directory name should always match host name.
                 ({ ... }: { networking.hostName = k; })
         
@@ -125,6 +128,7 @@
                   };
                 })
 
+                inputs.sops-nix.homeManagerModules.sops
                 inputs.impermanence.homeManagerModules.impermanence
               ];
             };