fix: Properly persist Straight.el dir

users/crumb/programs/emacs.nix

@@ -48,7 +48,10 @@ let
     '';
   };
 in {
-  sydnix.impermanence.cache.directories = [ straightBaseDir ];
+  sydnix.impermanence.cache.directories = [
+    # Impermanence expects the path to be relative to ~.
+    (lib.removePrefix config.home.homeDirectory straightBaseDir)
+  ];
   home.packages = [ emacsWrapper ];
 
   # TODO: Make sure this is using the right package for Emacs...