replace int with string for env variable

modules/common/default.nix

@@ -87,7 +87,7 @@
   environment.variables = {
     EDITOR = "vim";
     HIGHLIGHT_STYLE = "solarized-light";
-    NIXPKGS_ALLOW_UNFREE = 1;
+    NIXPKGS_ALLOW_UNFREE = "1";
   };
 
   security.sudo = {

modules/scripts/default.nix

@@ -0,0 +1,7 @@
+{ pkgs, ... }:
+let
+  remove-special-characters = pkgs.writeShellScriptBin "${builtins.readFile ./remove_special_characters.sh}";
+in
+{
+  environment.systemPackages = [ remove-special-characters ];
+}

modules/scripts/remove_special_characters.sh

@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+find . -print | while read file
+do
+  file_clean=${file//[ ()&\'\,]/_}
+  mv "$file" "$file_clean"
+done