Use pacman -Syu {package} instead of -S {package} to avoid updating when not installing

install.py

@@ -63,24 +63,22 @@ class Installer:
         this_stderr: Optional[int] = subprocess.DEVNULL if self.hide_commands else None
 
         if operating_system in ("arch", "manjaro"):
-            command = "sudo pacman -Syu"
             operating_system = "arch"
+            # On Arch-based systems, will update while installing packages
 
         elif operating_system in ("debian", "ubuntu"):
-            command = "sudo apt update"
             operating_system = "debian"
+            subprocess.run(
+                "sudo apt update",
+                check=True,
+                shell=True,
+                stdout=this_stdout,
+                stderr=this_stderr,
+            )
 
         else:
             raise AssertionError("The operating system should have been defined")
 
-        subprocess.run(
-            command,
-            check=True,
-            shell=True,
-            stdout=this_stdout,
-            stderr=this_stderr,
-        )
-
     def evaluate_condition(self, condition: str) -> bool:
         """Run a bash command. On success return True, else return False."""
 
@@ -215,7 +213,7 @@ class Installer:
         ui.info_2("Installing packages...")
         for i, package in enumerate(packages):
             if self.operating_system == "arch":
-                command = "sudo pacman -S --needed --noconfirm {}".format(package)
+                command = "sudo pacman -Syu --needed --noconfirm {}".format(package)
             elif self.operating_system == "debian":
                 command = "sudo apt install -y {}".format(package)