"login" and "su" have "auth sufficient pam_self.so" but a screen
locker is supposed to ask for password regardless.

pam_unix(8) requires root priveleges to access master.passwd(5),
so try authenticating via setuid helper first.

--- pam/hyprlock.orig	2024-03-01 23:49:44 UTC
+++ pam/hyprlock
@@ -1,5 +1,4 @@
-# PAM configuration file for hyprlock
-# the 'login' configuration file (see /etc/pam.d/login)
+# PAM configuration for hyprlock. Only uses auth facilities.
 
-auth        include     login
+auth        include     unix-selfauth
 
--- src/auth/Pam.cpp.orig	2024-12-18 15:03:04 UTC
+++ src/auth/Pam.cpp
@@ -64,11 +64,6 @@ CPam::CPam() {
     static auto* const PPAMMODULE = (Hyprlang::STRING*)(g_pConfigManager->getValuePtr("auth:pam:module"));
     m_sPamModule                  = *PPAMMODULE;
 
-    if (!std::filesystem::exists(std::filesystem::path("/etc/pam.d/") / m_sPamModule)) {
-        Debug::log(ERR, "Pam module \"/etc/pam.d/{}\" does not exist! Falling back to \"/etc/pam.d/su\"", m_sPamModule);
-        m_sPamModule = "su";
-    }
-
     m_sConversationState.waitForInput = [this]() { this->waitForInput(); };
 }