removed mkbackup script, refactored all script files to use pkgs.writeShellApplication rather than pkgs.writeShellScriptBin

modules/home/scripts/commands/splash.nix

@@ -1,13 +1,18 @@
 {
-  self,
-  pkgs,
+  pkgs
 }:
-pkgs.writeShellScriptBin "splash" ''
-   #!/bin/bash
-
-   echo "NixOS kernel ver. $(uname -a | awk '{print $3}') x86_64 GNU/Linux"
-   date +"%A %B %-d %Y"
-  echo
-  echo " NixOS" | toilet -f 3d | lolcat -S 25
-   echo
-''
+pkgs.writeShellApplication {
+  name = "splash";
+  runtimeInputs = with pkgs; [
+    lolcat
+    toilet
+    coreutils
+  ];
+  text = ''
+    echo "NixOS kernel ver. $(uname -a | awk '{print $3}') x86_64 GNU/Linux"
+    date +"%A %B %-d %Y"
+    echo
+    echo " NixOS" | toilet -f 3d | lolcat -S 25
+    echo
+  '';
+}