#1545: Fixed Yarn installation (#1546)

Author: jan-vcapgemini

CHANGELOG.adoc

@@ -2,6 +2,14 @@
 
 This file documents all notable changes to https://github.com/devonfw/IDEasy[IDEasy].
 
+== 2025.10.002
+
+Release with new features and bugfixes:
+
+* https://github.com/devonfw/IDEasy/issues/1545[#1545]: Yarn can not be installed after corepack
+
+The full list of changes for this release can be found in https://github.com/devonfw/IDEasy/milestone/36?closed=1[milestone 2025.10.002].
+
 == 2025.10.001
 
 Release with new features and bugfixes:

cli/src/main/java/com/devonfw/tools/ide/tool/node/NodeBasedCommandlet.java

@@ -134,7 +134,7 @@ protected void runPackageUninstall(String npmPackage) {
    */
   protected void runPackageInstall(String npmPackage) {
 
-    runPackageManager("install", "-g", npmPackage).failOnError();
+    runPackageManager("install", "-gf", npmPackage).failOnError();
   }
 
   /**

cli/src/test/java/com/devonfw/tools/ide/tool/corepack/CorepackTest.java

@@ -87,7 +87,7 @@ public void testCorepackRun(WireMockRuntimeInfo wireMockRuntimeInfo) {
 
   private void checkInstallation(IdeTestContext context) {
 
-    assertThat(context).logAtInfo().hasMessageContaining("npm install -g corepack@0.34.0");
+    assertThat(context).logAtInfo().hasMessageContaining("npm install -gf corepack@0.34.0");
     assertThat(context).logAtSuccess().hasMessageContaining("Setting npm config prefix to: " + context.getSoftwarePath().resolve("node") + " was successful");
     assertThat(context).logAtSuccess().hasMessage("Successfully installed corepack in version 0.34.0");
   }

cli/src/test/java/com/devonfw/tools/ide/tool/ng/NgTest.java

@@ -4,8 +4,6 @@
 
 import com.devonfw.tools.ide.context.AbstractIdeContextTest;
 import com.devonfw.tools.ide.context.IdeTestContext;
-import com.devonfw.tools.ide.os.SystemInfo;
-import com.devonfw.tools.ide.os.SystemInfoMock;
 import com.github.tomakehurst.wiremock.junit5.WireMockRuntimeInfo;
 import com.github.tomakehurst.wiremock.junit5.WireMockTest;
 
@@ -85,7 +83,7 @@ public void testNgRun(WireMockRuntimeInfo wireMockRuntimeInfo) {
 
   private void checkInstallation(IdeTestContext context) {
 
-    assertThat(context).logAtInfo().hasMessageContaining("npm install -g @angular/cli@18.0.1");
+    assertThat(context).logAtInfo().hasMessageContaining("npm install -gf @angular/cli@18.0.1");
 
     assertThat(context).logAtSuccess().hasMessage("Successfully installed ng in version 18.0.1");
   }

cli/src/test/java/com/devonfw/tools/ide/tool/yarn/YarnTest.java

@@ -84,7 +84,7 @@ public void testYarnRun(WireMockRuntimeInfo wireMockRuntimeInfo) {
 
   private void checkInstallation(IdeTestContext context) {
 
-    assertThat(context).logAtInfo().hasMessageContaining("npm install -g yarn@2.4.3");
+    assertThat(context).logAtInfo().hasMessageContaining("npm install -gf yarn@2.4.3");
     assertThat(context).logAtSuccess().hasMessageContaining("Setting npm config prefix to: " + context.getSoftwarePath().resolve("node") + " was successful");
     assertThat(context).logAtSuccess().hasMessage("Successfully installed yarn in version 2.4.3");
   }