Use sops for private key distribution

nixos/modules/borgbackup.nix

@@ -132,18 +132,11 @@ in {
       };
     };
     environment.persistence.${config.impermanence.name} = {
-      users.fsaccount.files = [
+      users.fsaccount.directories = [
-        /*
+        {
-          {
+          directory = ".ssh"; # SSH Key with access to FS Account and known_hosts
-          file = ".ssh/known_hosts";
+          mode = "u=rwx,g=,o=";
-          parentDirectory = {
-            user = "fsaccount";
-            group = "users";
-            mode = "u=rwx,g=,o=";
-          };
         }
-        */
-        ".ssh/known_hosts"
       ];
     };
     sops.secrets.backupKey = {