Ask for symlink overwrite, add pacman -Syu at OS determination

install.py

@@ -234,8 +234,11 @@ class Installer:
             p_dest.parent.makedirs_p()
 
         if p_dest.exists() and not self.force:
-            ui.info_2("Skipping", pretty_dest)
-            return
+            if not ui.ask_yes_no(f"{pretty_dest} already exists. Overwrite?"):
+                ui.info_2("Skipping", pretty_dest)
+                return
+            ui.info_2("Deleting", pretty_dest)
+            p_dest.remove()
 
         if p_dest.islink():
             p_dest.remove()
@@ -333,6 +336,12 @@ def define_os() -> str:
             ui.info_3("Found", operating_system)
 
             if operating_system in ("arch", "manjaro"):
+                subprocess.run(
+                    "sudo pacman -Syu",
+                    check=True,
+                    shell=True,
+                    stdout=subprocess.DEVNULL,
+                )
                 return "arch based"
 
             if operating_system in ("debian", "ubuntu"):