set up impermanence configurations for applications

modules/home-manager-modules/programs/calibre.nix

@@ -17,7 +17,12 @@
     }
     (
       lib.mkIf osConfig.host.impermanence.enable {
-        # TODO: map impermanence for calibre
+        home.persistence."/persist${config.home.homeDirectory}" = {
+          directories = [
+            "~/.config/calibre"
+          ];
+          allowOther = true;
+        };
       }
     )
   ]);