locale: Fixed locale

yeah, the timezone link should of never been ran on the host system as
that means your timezone wont work as /mnt/usr/share/zoneinfo won't
exist on the installed system

and i fixed up the set_locale function so it actually uses the locale
you gave to it instead of using the hardcoded en_US.UTF-8 value

src/functions/locale.rs

@@ -3,12 +3,15 @@ use crate::internal::*;
 
 pub fn set_timezone(timezone: &str) {
     exec_eval(
-        exec(
+        // Remember this should run in a chroot
+        // not on the host, as linking to /mnt/usr/share/zoneinfo
+        // is a bad idea as your timezone wont work
+        exec_chroot(
             "ln",
             vec![
                 "-sf".to_string(),
-                format!("/mnt/usr/share/zoneinfo/{}", timezone),
-                "/mnt/etc/localtime".to_string(),
+                format!("/usr/share/zoneinfo/{}", timezone),
+                "/etc/localtime".to_string(),
             ],
         ),
         "Set timezone",
@@ -20,29 +23,26 @@ pub fn set_timezone(timezone: &str) {
 }
 
 pub fn set_locale(locale: String) {
-    files_eval(
-        files::append_file("/mnt/etc/locale.gen", "en_US.UTF-8 UTF-8\n"),
-        "add en_US.UTF-8 UTF-8 to locale.gen",
-    );
-    // TODO: Refactor this
     for i in (0..locale.split(' ').count()).step_by(2) {
         files_eval(
             files::append_file(
                 "/mnt/etc/locale.gen",
-                format!(
+                &format!(
                     "{} {}\n",
                     locale.split(' ').collect::<Vec<&str>>()[i],
                     locale.split(' ').collect::<Vec<&str>>()[i + 1]
-                )
-                .as_str(),
+                ),
             ),
             "add locales to locale.gen",
         );
     }
     exec_eval(exec_chroot("locale-gen", vec![]), "generate locales");
     files::create_file("/mnt/etc/locale.conf");
     files_eval(
-        files::append_file("/mnt/etc/locale.conf", "LANG=en_US.UTF-8"),
+        files::append_file(
+            "/mnt/etc/locale.conf",
+            &format!("LANG={}", locale.split(' ').collect::<Vec<&str>>()[0]),
+        ),
         "edit locale.conf",
     );
 }