Reorganise sops.

modules/core/sops.nix

@@ -0,0 +1,19 @@
+{
+  inputs,
+  ...
+}:
+let
+  secretsPath = builtins.toString inputs.mysecrets;
+in
+{
+  sops = {
+    defaultSopsFile = "${secretsPath}/secrets.yaml";
+    age = {
+      sshKeyPaths = [
+        "/etc/ssh/ssh_host_ed25519_key"
+      ];
+      keyFile = "/var/lib/sops-nix/key.txt";
+      generateKey = true;
+    };
+  };
+}