From bbea99747966d9da09c7a9ff60df1379f281d1b4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
 <marmarek@invisiblethingslab.com>
Date: Mon, 14 Apr 2025 02:16:28 +0200
Subject: [PATCH] Simplify logging apt-get update output

The 'apt_get_update_output' variable is unused, so avoid complexity with
saving apt-get update output and printing it at the same time. This
fixes checking updates on Debian, as 'tee /proc/self/fd/2' fails when
the script is called from systemd service (via systemd timer).

Fixes QubesOS/qubes-issues#9895
---
 package-managers/upgrades-installed-check | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/package-managers/upgrades-installed-check b/package-managers/upgrades-installed-check
index b9b80a576..028d96332 100755
--- a/package-managers/upgrades-installed-check
+++ b/package-managers/upgrades-installed-check
@@ -32,8 +32,7 @@ elif [ -e /etc/debian_version ]; then
     set -e
     set -o pipefail
     if ! $skip_refresh; then
-        # shellcheck disable=SC2034
-        apt_get_update_output="$(apt-get -q update 2>&1 | tee /proc/self/fd/2)"
+        apt-get -q update >&2
     fi
     apt_get_upgrade_output="$(LANG="C" apt-get -s upgrade 2>&1)"
     exit_code="$?"