From 9b81c116fc3c67ab882da98c572e7e10a1ce33c0 Mon Sep 17 00:00:00 2001
From: mmews <marcus.mews@numberfour.eu>
Date: Thu, 4 Jan 2024 11:27:31 +0100
Subject: [PATCH] respect pnpm-workspaces.yaml

---
 .../eclipse/n4js/utils/ProjectDescriptionLoader.java  | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/plugins/org.eclipse.n4js/src/org/eclipse/n4js/utils/ProjectDescriptionLoader.java b/plugins/org.eclipse.n4js/src/org/eclipse/n4js/utils/ProjectDescriptionLoader.java
index 0e1ed3f551..ca9ddd160d 100644
--- a/plugins/org.eclipse.n4js/src/org/eclipse/n4js/utils/ProjectDescriptionLoader.java
+++ b/plugins/org.eclipse.n4js/src/org/eclipse/n4js/utils/ProjectDescriptionLoader.java
@@ -293,8 +293,15 @@ private void setInformationFromPnpmWorkspace(FileURI location, ProjectDescriptio
 		Multimap<String, String> pnpmWorkspacesYaml = YamlUtil.loadYamlAtLocation(path);
 		Collection<String> packagesEntries = pnpmWorkspacesYaml.get("packages");
 		if (!packagesEntries.isEmpty()) {
-			target.setPnpmWorkspaceRoot(true);
-			target.getWorkspaces().addAll(packagesEntries);
+			// check for property discussed here: https://github.com/pnpm/pnpm/issues/2255#issuecomment-576866891
+			Collection<String> useYarnConfigEntries = pnpmWorkspacesYaml.get("useYarnConfig");
+			if (useYarnConfigEntries.isEmpty()
+					|| !"true".equals(useYarnConfigEntries.iterator().next().toString().toLowerCase())) {
+
+				target.setPnpmWorkspaceRoot(true);
+				target.getWorkspaces().clear();
+				target.getWorkspaces().addAll(packagesEntries);
+			}
 		}
 	}