Allow --pause argument

tools/setup_buildenv_msys2_stage1.sh

@@ -3,8 +3,27 @@
 ## Bash script to setup EdgeTX development environment first stage.
 ## Let it run as normal user in MSYS2 MSYS console (violet icon).
 
-pacman -Su --noconfirm
+PAUSEAFTEREACHLINE="false"
+STEP=1
+# Parse argument(s)
+for arg in "$@"
+do
+	if [[ $arg == "--pause" ]]; then
+		PAUSEAFTEREACHLINE="true"
+	fi
+done
 
+echo "=== Step $((STEP++)): Updating MSYS2 base packages ==="
+pacman -Su --noconfirm
+if [[ $PAUSEAFTEREACHLINE == "true" ]]; then
+  echo "Step finished. Please check the output above and press Enter to continue or Ctrl+C to stop."
+  read
+fi
+
+echo "=== Step $((STEP++)): Installing system wide packages ==="
 pacman -S --noconfirm git make mingw-w64-x86_64-toolchain
+if [[ $PAUSEAFTEREACHLINE == "true" ]]; then
+  echo "Step finished. Please check the output above and press Enter to continue or Ctrl+C to stop."
+fi
 
 echo "This stage has finished. Please close the MSYS console and continue to stage 2 in MinGW 64-bit console (blue icon)."