From 6e518633f340b8281f032ed47d07f61b4d91fe59 Mon Sep 17 00:00:00 2001
From: Stanislas Lange <stanislas.lange@pm.me>
Date: Wed, 29 Jul 2020 12:20:51 +0200
Subject: [PATCH] Fix Debian installation: use backports

And limit to Debian 10. Fix #101
---
 wireguard-install.sh | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

diff --git a/wireguard-install.sh b/wireguard-install.sh
index 40c08ce..93c755d 100644
--- a/wireguard-install.sh
+++ b/wireguard-install.sh
@@ -98,6 +98,14 @@ fi
 if [[ -e /etc/debian_version ]]; then
 	source /etc/os-release
 	OS=$ID # debian or ubuntu
+	if [[ -e /etc/debian_version ]]; then
+		if [[ $ID == "debian" || $ID == "raspbian" ]]; then
+			if [[ $VERSION_ID -ne 10 ]]; then
+				echo "Your version of Debian ($VERSION_ID) is not supported. Please use Debian 10 Buster"
+				exit 1
+			fi
+		fi
+	fi
 elif [[ -e /etc/fedora-release ]]; then
 	source /etc/os-release
 	OS=$ID
@@ -139,12 +147,13 @@ if [[ $OS == 'ubuntu' ]]; then
 	apt-get install -y "linux-headers-$(uname -r)"
 	apt-get install -y wireguard iptables resolvconf qrencode
 elif [[ $OS == 'debian' ]]; then
-	echo "deb http://deb.debian.org/debian/ unstable main" >/etc/apt/sources.list.d/unstable.list
-	printf 'Package: *\nPin: release a=unstable\nPin-Priority: 90\n' >/etc/apt/preferences.d/limit-unstable
+	if ! grep -rqs "^deb .* buster-backports" /etc/apt/; then
+		echo "deb http://deb.debian.org/debian buster-backports main" >/etc/apt/sources.list.d/backports.list
+		apt-get update
+	fi
 	apt update
-	apt-get install -y "linux-headers-$(uname -r)"
-	apt-get install -y wireguard iptables resolvconf qrencode
-	apt-get install -y bc # mitigate https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=956869
+	apt-get install -y iptables resolvconf qrencode
+	apt-get install -y -t buster-backports wireguard
 elif [[ $OS == 'fedora' ]]; then
 	if [[ $VERSION_ID -lt 32 ]]; then
 		dnf install -y dnf-plugins-core