feat: Manage secrets w/ sops-nix

Closes #1

users/crumb/default.nix

@@ -4,18 +4,28 @@
     # TODO: Don't hard-code `persist`.  Use
     # config.sydnix.impermanence.persistGroupName.
     extraGroups = [ "wheel" "persist" ];
-    # Change this immediately after installation!
-    initialPassword = "password123";
+    initialHashedPassword =
+      "$y$j9T$aEFDDwdTZbAc6VQRXrkBJ0$K8wxTGTWDihyX1wxJ.ZMH//wmQFfrGGUkLkxIU0Lyq8";
   };
 
   homeConfiguration = { config, lib, pkgs, ... }: {
     imports = [ ./programs.nix ];
+
+    sydnix = {
+      sops = {
+        enable = true;
+        secrets = {
+          example-user-key = {};
+        };
+      };
+    };
+
     home = {
-      stateVersion = "18.09";
       packages = [
-        pkgs.hello
-        # pkgs.wezterm
       ];
+
+      # Don't touch!
+      stateVersion = "18.09";
     };
   };
 }