From 389efd25635fe3e2e1d7cd67f904c45f8a9043af Mon Sep 17 00:00:00 2001
From: Hannes Wellmann <wellmann.hannes1@gmx.net>
Date: Mon, 28 Aug 2023 21:26:28 +0200
Subject: [PATCH] Unconfigure slf4j.simple when m2e.logback.feature is
 installed

Disable slf4j.simple when present during the installation of the
m2e.logback feature.
This prevents warnings about multiple slf4j providers found in the
runtime and the potential to have slf4j.simple being selected as
provider in use.
---
 org.eclipse.m2e.logback.feature/p2.inf | 26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/org.eclipse.m2e.logback.feature/p2.inf b/org.eclipse.m2e.logback.feature/p2.inf
index dd3a7fb627..7532b3cf62 100644
--- a/org.eclipse.m2e.logback.feature/p2.inf
+++ b/org.eclipse.m2e.logback.feature/p2.inf
@@ -4,6 +4,11 @@ requires.0.namespace=org.eclipse.equinox.p2.iu
 requires.0.name=configure.logback.classic
 requires.0.range=[$version$,$version$]
 requires.0.greedy=true
+requires.1.namespace=org.eclipse.equinox.p2.iu
+requires.1.name=unconfigure.slf4j.simple
+requires.1.range=[$version$,$version$]
+requires.1.greedy=true
+requires.1.optional=true
 
 #Create a IU fragment named configure.logback.classic
 units.0.id=configure.logback.classic
@@ -21,5 +26,24 @@ units.0.instructions.unconfigure= \
   org.eclipse.equinox.p2.touchpoint.eclipse.markStarted(started:false);
 units.0.hostRequirements.0.namespace=osgi.bundle
 units.0.hostRequirements.0.name=ch.qos.logback.classic
-units.0.hostRequirements.0.range=[1.3,1.5]
+units.0.hostRequirements.0.range=[1.3,1.5)
 units.0.hostRequirements.0.greedy=false
+
+#Create a IU fragment named unconfigure.slf4j.simple
+units.1.id=unconfigure.slf4j.simple
+units.1.version=$version$
+units.1.provides.0.namespace=org.eclipse.equinox.p2.iu
+units.1.provides.0.name=unconfigure.slf4j.simple
+units.1.provides.0.version=$version$
+units.1.instructions.install=org.eclipse.equinox.p2.touchpoint.eclipse.installBundle(bundle:${artifact});
+units.1.instructions.uninstall=org.eclipse.equinox.p2.touchpoint.eclipse.uninstallBundle(bundle:${artifact});
+units.1.instructions.configure= \
+  org.eclipse.equinox.p2.touchpoint.eclipse.setStartLevel(startLevel:-1); \
+  org.eclipse.equinox.p2.touchpoint.eclipse.markStarted(started:false);
+units.1.instructions.unconfigure= \
+  org.eclipse.equinox.p2.touchpoint.eclipse.setStartLevel(startLevel:2); \
+  org.eclipse.equinox.p2.touchpoint.eclipse.markStarted(started:true);
+units.1.hostRequirements.0.namespace=osgi.bundle
+units.1.hostRequirements.0.name=slf4j.simple
+units.1.hostRequirements.0.range=[2.0,3.0)
+units.1.hostRequirements.0.greedy=false