Fix home manager dotfiles

home/fish/default.nix

@@ -19,5 +19,6 @@
     };
 
     shellInit = builtins.readFile ./config.fish;
+    interactiveShellInit = builtins.readFile ./interactive.fish;
   };
 }

home/fish/interactive.fish

@@ -0,0 +1,3 @@
+if test "$KITTY_STR" -eq 1
+  fastfetch
+end