load nix path in non-interactive fish shells too

home-manager/common.nix

@@ -47,13 +47,14 @@ inputs:
           src = inputs.bobthefish;
         }
       ];
-      interactiveShellInit = ''
-        set TERM xterm-256color
-
+      shellInit = ''
         # Load nix shit on non-NixOS computers (yea yea laugh it up we all have legacy machines somewhere)
         if not set -q NIX_PATH
           fenv source $HOME/.nix-profile/etc/profile.d/nix.sh
         end
+      '';
+      interactiveShellInit = ''
+        set TERM xterm-256color
 
         set -U __done_min_cmd_duration 2000