From ed9ac4338b9c4e7327954e71a9da4855224e4f1a Mon Sep 17 00:00:00 2001
From: parazyd <parazyd@dyne.org>
Date: Sat, 15 Apr 2017 17:29:36 +0200
Subject: [PATCH] safety check for unavailable packages when installing
 $extra_packages

---
 zlibs/bootstrap | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/zlibs/bootstrap b/zlibs/bootstrap
index ff294eb..a2ef358 100644
--- a/zlibs/bootstrap
+++ b/zlibs/bootstrap
@@ -151,6 +151,19 @@ bootstrap_tar_unpack() {
 	cat <<EOF | sudo tee ${strapdir}/postunpack >/dev/null
 #!/bin/sh
 apt-get update
+
+## check if all our extra_packages exist
+allpkgs="\$(apt-cache search '.' | cut -d' ' -f1)"
+for i in ${extra_packages} ; do
+	printf "%s" "\$allpkgs" | grep -q "^\$i$" || missing="\$missing \$i"
+done
+
+[ -n "\$missing" ] && {
+	printf "\033[1;31m[!!] some extra packages don't exist\033[0m\n"
+	printf "%s\n" "\$missing"
+	exit 1
+}
+
 apt-get --yes --force-yes upgrade
 apt-get --yes --force-yes install ${extra_packages}
 apt-get --yes --force-yes autoremove