hooks/post-install: new hook (pkglint) to abort if pkg contains forbidden dirs.

common/hooks/post-install/99-pkglint.sh

@@ -0,0 +1,21 @@
+# This hook checks for common issues related to void.
+
+hook() {
+	local error=0
+
+	for f in bin sbin lib lib32; do
+		if [ -d ${PKGDESTDIR}/${f} ]; then
+			msg_red "${pkgver}: /${f} directory is not allowed, use /usr/${f}.\n"
+			error=1
+		fi
+	done
+	for f in sys dev home root run var/run tmp usr/lib64 usr/local; do
+		if [ -d ${PKGDESTDIR}/${f} ]; then
+			msg_red "${pkgver}: /${f} directory is not allowed, remove it!\n"
+			error=1
+		fi
+	done
+	if [ $error -gt 0 ]; then
+		msg_error "${pkgver}: cannot continue with installation!\n"
+	fi
+}