make regeneration of tmenu_run cache better

builds/utils.nix

@@ -38,7 +38,6 @@ stdenv.mkDerivation rec {
 
     for i in $(ls $src/); do
       cp $src/$i $out/bin
-      ln -sf $out/bin/tmenu_run $out/bin/regenerate
       wrapProgram $out/bin/$i --prefix PATH : ${lib.makeBinPath [ sxhkd bash feh xrandr jq figlet curl fzy xkbset ytfzf sshuttle svkbd scrcpy xrectsel ffcast xmessage imagemagick ]}
     done
   '';

builds/utils/tmenu_run

@@ -10,8 +10,8 @@ tmenu_path () {
 }
 
 export IS_RUNNING_IN_TMENU="yes"
-choice=$(cat $HOME/.local/share/tmenu_cache | tmenu)
-if [ -z "$choice" ]; then
+choice=$(echo regenerate | cat $HOME/.local/share/tmenu_cache - | tmenu)
+if [ "$choice" = "regenerate" ]; then
 	mkdir -p $HOME/.local/share
 	tmenu_path | sort > $HOME/.local/share/tmenu_cache
 else