From b40905670a3ac7ab17754c93bc99d0acd40d5228 Mon Sep 17 00:00:00 2001
From: Konrad Bucheli <konrad.bucheli@psi.ch>
Date: Tue, 21 Jun 2022 13:19:10 +0200
Subject: [PATCH] alternative OS differentiated package selection

---
 rhel8/packages.md | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/rhel8/packages.md b/rhel8/packages.md
index 0ef3ba01..29e77fc1 100644
--- a/rhel8/packages.md
+++ b/rhel8/packages.md
@@ -65,6 +65,17 @@ base::pkg_group::java:
     - 'java-11-openjdk'
     - 'java-17-openjdk:-redhat7'
 ```
+ **possible alternative**
+ 
+ Certain packages are only used on a given OS Version, so a `os=` with the OS name and the major version selects a package only for given OS, where as a `os!` will filter away given package on hosts with given OS, so they are not installed there.
+
+```
+base::pkg_group::java:
+    - 'java-1.8.0-openjdk:os=redhat7'
+    - 'java-11-openjdk'
+    - 'java-17-openjdk:os!redhat7'
+```
+
 Note that this tag can be combined with the `latest` and `absent` tag.
 
 ### Remove Packages