Add nix-index. I am indecisive

modules/home/programs/terminal/default.nix

@@ -8,7 +8,7 @@
     ./ncmpcpp
     ./neovim
     ./nh
-    ./not-found
+    ./nix-index
     ./ranger
     ./spotdl
     ./tmux

modules/home/programs/terminal/nix-index/default.nix

@@ -0,0 +1,4 @@
+{ ... }:
+{
+  programs.nix-index.enable = true;
+}

modules/home/programs/terminal/not-found/default.nix

@@ -1,4 +0,0 @@
-{ ... }:
-{
-  programs.command-not-found.enable = true;
-}

modules/system/devices/disks/impermanence/main/default.nix

@@ -28,9 +28,10 @@
         ".local/share/PrismLauncher"
         ".local/share/Steam"
         ".local/share/TelegramDesktop"
-
         ".local/state/wireplumber"
 
+        ".cache/nix-index"
+
         { directory = ".ssh"; mode = "0700"; }
         { directory = ".gnupg"; mode = "0700"; }
         { directory = ".local/share/keyrings"; mode = "0700"; }