moved /dev/null usage to a separate function

setup.py

@@ -18,6 +18,13 @@ tmp_dir = "/tmp/com.developomp.setup"
 #
 # Util
 #
+# These commands are from `src/util.py`.
+# Comments can only be found over there.
+#
+
+
+def silent_system(command: str) -> None:
+    system(f"{command} &> /dev/null")
 
 
 def command_exits(command: str) -> bool:
@@ -72,7 +79,7 @@ def exit_if_no_internet():
     Pings archlinux.org for testing."""
 
     print("Checking if there's internet connection")
-    if system("ping -c 1 archlinux.org &> /dev/null"):
+    if silent_system("ping -c 1 archlinux.org"):
         print("Failed to connect to internet.", file=sys.stderr)
         exit(1)
 
@@ -100,8 +107,8 @@ def clone_repository():
     cleanup()
 
     # clone repository
-    if system(
-        f"git clone --depth 1 https://github.com/developomp/setup.git {tmp_dir} &> /dev/null"
+    if silent_system(
+        f"git clone --depth 1 https://github.com/developomp/setup.git {tmp_dir}"
     ):
         print("Failed to clone repository", file=sys.stderr)
         exit(1)

src/initialize.py

@@ -1,5 +1,4 @@
-import os
-
+from src.util import silent_system, paru_install
 from src import log
 
 
@@ -9,29 +8,29 @@ def initialize():
     """
 
     log.log("Initializing flatpak")
-    if os.system("sudo pacman -S --noconfirm --needed flatpak &> /dev/null"):
+    if paru_install("flatpak"):
         log.error("Failed to install flatpak via pacman")
         exit(1)
 
     log.log("Initializing pip")
-    if os.system("sudo pacman -S --noconfirm --needed python-pip &> /dev/null"):
+    if paru_install("python-pip"):
         log.error("Failed to install pip via pacman")
         exit(1)
 
     # https://pypi.org/project/requests
     log.log("Initializing requests")
-    if os.system("pip install requests &> /dev/null"):
+    if silent_system("pip install requests"):
         log.error("Failed to install requests via pip")
         exit(1)
 
     # https://pypi.org/project/PyYAML
     log.log("Initializing PyYAML")
-    if os.system("pip install PyYAML &> /dev/null"):
+    if silent_system("pip install PyYAML"):
         log.error("Failed to install PyYAML via pip")
         exit(1)
 
     # https://github.com/magmax/python-inquirer
     log.log("Initializing inquirer")
-    if os.system("pip install inquirer &> /dev/null"):
+    if silent_system("pip install inquirer"):
         log.error("Failed to install inquirer via pip")
         exit(1)

src/util.py

@@ -115,6 +115,12 @@ def zsh_system(command: str) -> None:
     system(f"/usr/bin/zsh -c '{command}'")
 
 
+def silent_system(command: str) -> None:
+    """os.system but does not show its log and error to the terminal."""
+
+    system(f"{command} &> /dev/null")
+
+
 def run(command: str) -> list[str]:
     """Runs command in system shell and return the result.
     This is a blocking function.