From: John Jolly <john.jolly@gmail.com>
Date: Wed Sep 12 09:30:59 2018 -0600
Subject: common/functions: When checking for RPM package check '--whatprovides' (#134)
Patch-mainline: Upstream
Git-repo: https://github.com/warewulf/warewulf3
Git-commit: 4c2f2016511641b5becc3f03a769ab24dab6a4b2
References: 

This allows one to check a package by its capability as well.
Package names are not affected: a package provides its own
capability.

Signed-off-by: Egbert Eich <eich@suse.com>---
 common/etc/functions | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/common/etc/functions b/common/etc/functions
index 2370e2a..a0cfd83 100644
--- a/common/etc/functions
+++ b/common/etc/functions
@@ -210,8 +210,8 @@ wwreqroot() {
 wwpackage_check() {
     for PACKAGE in "$@"; do
         if [ -x /bin/rpm ]; then
-            wwprint "Checking to see if RPM '$PACKAGE' is installed "
-            if wwtest rpm -q $PACKAGE; then
+            wwprint "Checking to see if RPM or capability '$PACKAGE' is installed "
+            if wwtest rpm -q --whatprovides "$PACKAGE"; then
                 return 0
             fi
         elif [ -x /bin/dpkg ] || [ -x /usr/bin/dpkg ]; then