Simplify do_install greatly

install.py

@@ -63,11 +63,10 @@ class Installer:
         this_stderr: Optional[int] = subprocess.DEVNULL if self.hide_commands else None
 
         if operating_system in ("arch", "manjaro"):
-            operating_system = "arch"
             # On Arch-based systems, will update while installing packages
+            pass
 
         elif operating_system in ("debian", "ubuntu"):
-            operating_system = "debian"
             subprocess.run(
                 "sudo apt update",
                 check=True,
@@ -204,14 +203,13 @@ class Installer:
             except KeyError:
                 ui.warning("No packages for {}".format(self.operating_system))
 
-        failed_installs = []
-
         # defaults for subprocess.run()
         this_stdout: Optional[int] = subprocess.DEVNULL if self.hide_commands else None
         this_stderr: Optional[int] = subprocess.DEVNULL if self.hide_commands else None
 
         ui.info_2("Installing packages...")
 
+        # On Arch-based OS, update the system first
         if self.operating_system == "arch":
             subprocess.run(
                 "sudo pacman -Syu",
@@ -221,37 +219,21 @@ class Installer:
                 stderr=this_stderr,
             )
 
-        for i, package in enumerate(packages):
-            if self.operating_system == "arch":
-                command = "sudo pacman -S --needed --noconfirm {}".format(package)
-            elif self.operating_system == "debian":
-                command = "sudo apt install -y {}".format(package)
-
-            ui.info_count(i, len(packages), package, end="... ")
-
-            install = subprocess.run(
-                command,
-                check=False,
-                shell=True,
-                stdout=this_stdout,
-                stderr=this_stderr,
+        if self.operating_system == "arch":
+            command = "sudo pacman -S --needed --noconfirm {}".format(
+                " ".join(packages)
             )
+        elif self.operating_system == "debian":
+            command = "sudo apt install -y {}".format(" ".join(packages))
 
-            if install.returncode != 0:
-                ui.info(ui.cross)
-                failed_installs.append(package)
-            else:
-                ui.info(ui.check)
-
-        if len(failed_installs) > 0:
-            ui.warning("These packages failed to install:")
-
-            for failed in failed_installs:
-                ui.info(" ", failed)
-
-            ui.warning(
-                f"Are the packages really meant for {self.operating_system} systems?"
-            )
+        assert command
+        subprocess.run(
+            command,
+            check=False,
+            shell=True,
+            stdout=this_stdout,
+            stderr=this_stderr,
+        )
 
     def do_include(self, yml_file: str) -> None:
         """Include an additional config file."""