From 8597ee543a7d1d61450542c61512295f9da4fec4 Mon Sep 17 00:00:00 2001
From: David Kalnischkies <david@kalnischkies.de>
Date: Thu, 10 Sep 2015 10:03:40 +0200
Subject: [PATCH] include debug information in the autoremove-kernels file
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Figuring out after the fact what went wrong in the kernel hook is kinda
hart, also as the bugreports are usually very lacking on the details
front. Collecting the internal variables in the debug output we attach
to the generated file might help shine some light on the matter.
It's at least not going to hurt…
---
 debian/apt.auto-removal.sh | 26 +++++++++++++++++++++++---
 1 file changed, 23 insertions(+), 3 deletions(-)

diff --git a/debian/apt.auto-removal.sh b/debian/apt.auto-removal.sh
index f615fa677..6af5da987 100644
--- a/debian/apt.auto-removal.sh
+++ b/debian/apt.auto-removal.sh
@@ -47,13 +47,33 @@ generateconfig() {
 APT::NeverAutoRemove
 {
 EOF
-	apt-config dump --no-empty --format '%v%n' 'APT::VersionedKernelPackages' | while read package; do
+	for package in $(apt-config dump --no-empty --format '%v%n' 'APT::VersionedKernelPackages'); do
 		for kernel in $kernels; do
 			echo "   \"^${package}-${kernel}$\";"
 		done
 	done
 	echo '};'
+	if [ "${APT_AUTO_REMOVAL_KERNELS_DEBUG:-true}" = 'true' ]; then
+		cat <<EOF
+/* Debug information:
+# dpkg list:
+$(dpkg -l | grep '\(linux\|kfreebsd\|gnumach\)-image-')
+# list of installed kernel packages:
+$list
+# list of different kernel versions:
+$debverlist
+# Installing kernel: $installed_version ($1)
+# Running kernel: $running_version ($unamer)
+# Last kernel: $latest_version
+# Previous kernel: $previous_version
+# Kernel versions list to keep:
+$debkernels
+# Kernel packages (version part) to protect:
+$kernels
+*/
+EOF
+	fi
 }
-generateconfig > "${config_file}.dpkg-new"
-mv "${config_file}.dpkg-new" "$config_file"
+generateconfig "$@" > "${config_file}.dpkg-new"
+mv -f "${config_file}.dpkg-new" "$config_file"
 chmod 444 "$config_file"
-- 
2.45.2