Get rid of TychoProjectUtils entirely

tycho-core/src/main/java/org/eclipse/tycho/core/osgitools/EquinoxResolver.java

@@ -71,7 +71,6 @@
 import org.eclipse.tycho.core.ee.ExecutionEnvironmentUtils;
 import org.eclipse.tycho.core.ee.StandardExecutionEnvironment;
 import org.eclipse.tycho.core.osgitools.DependencyComputer.DependencyEntry;
-import org.eclipse.tycho.core.utils.TychoProjectUtils;
 import org.osgi.framework.Bundle;
 import org.osgi.framework.BundleException;
 import org.osgi.framework.Constants;
@@ -215,8 +214,7 @@ protected Properties getPlatformProperties(ReactorProject project, MavenSession
         //FIXME formally we should resolve the configuration for ALL declared environments!
         TargetEnvironment environment = configuration.getEnvironments().get(0);
         logger.debug("Using TargetEnvironment " + environment.toFilterExpression() + " to create resolver properties");
-        Properties properties = new Properties();
-        properties.putAll(TychoProjectUtils.getMergedProperties(project.adapt(MavenProject.class), mavenSession));
+        Properties properties = computeMergedProperties(project.adapt(MavenProject.class), mavenSession);
         return getPlatformProperties(properties, mavenSession, environment, ee);
     }
 
@@ -578,4 +576,15 @@ public List<AccessRule> getBootClasspathExtraAccessRules() {
         };
     }
 
+    public static Properties computeMergedProperties(MavenProject mavenProject, MavenSession mavenSession) {
+        Properties properties = new Properties();
+        properties.putAll(mavenProject.getProperties());
+        if (mavenSession != null) {
+            properties.putAll(mavenSession.getSystemProperties()); // session wins
+            properties.putAll(mavenSession.getUserProperties());
+        } else {
+            properties.putAll(System.getProperties());
+        }
+        return properties;
+    }
 }

tycho-core/src/main/java/org/eclipse/tycho/core/resolver/DefaultTychoResolver.java

@@ -15,6 +15,7 @@
 package org.eclipse.tycho.core.resolver;
 
 import java.util.Optional;
+import java.util.Properties;
 
 import org.apache.maven.execution.MavenSession;
 import org.apache.maven.model.Dependency;
@@ -23,20 +24,25 @@
 import org.codehaus.plexus.component.annotations.Requirement;
 import org.codehaus.plexus.logging.Logger;
 import org.eclipse.tycho.DependencyArtifacts;
+import org.eclipse.tycho.PlatformPropertiesUtils;
 import org.eclipse.tycho.ReactorProject;
 import org.eclipse.tycho.core.DependencyResolver;
 import org.eclipse.tycho.core.TychoProject;
 import org.eclipse.tycho.core.TychoProjectManager;
 import org.eclipse.tycho.core.osgitools.AbstractTychoProject;
 import org.eclipse.tycho.core.osgitools.DebugUtils;
 import org.eclipse.tycho.core.osgitools.DefaultReactorProject;
+import org.eclipse.tycho.core.osgitools.EquinoxResolver;
 import org.eclipse.tycho.resolver.TychoResolver;
 
 @Component(role = TychoResolver.class)
 public class DefaultTychoResolver implements TychoResolver {
 
     private static final String SETUP_MARKER = "DefaultTychoResolver/Setup";
     private static final String RESOLVE_MARKER = "DefaultTychoResolver/Resolve";
+    private static final String TYCHO_ENV_OSGI_WS = "tycho.env.osgi.ws";
+    private static final String TYCHO_ENV_OSGI_OS = "tycho.env.osgi.os";
+    private static final String TYCHO_ENV_OSGI_ARCH = "tycho.env.osgi.arch";
 
     @Requirement
     private Logger logger;
@@ -58,6 +64,17 @@ public void setupProject(MavenSession session, MavenProject project) {
                     return;
                 }
                 reactorProject.setContextValue(SETUP_MARKER, true);
+
+                //enhance the current project properties with the currently used environment
+                Properties properties = EquinoxResolver.computeMergedProperties(project, session);
+                String arch = PlatformPropertiesUtils.getArch(properties);
+                String os = PlatformPropertiesUtils.getOS(properties);
+                String ws = PlatformPropertiesUtils.getWS(properties);
+                Properties projectProperties = project.getProperties();
+                projectProperties.put(TYCHO_ENV_OSGI_WS, ws);
+                projectProperties.put(TYCHO_ENV_OSGI_OS, os);
+                projectProperties.put(TYCHO_ENV_OSGI_ARCH, arch);
+
                 //FIXME this should actually happen lazy on first access so we do not require more here than bootstrap the project with a session above 
                 dr.setupProject(session, project);
                 dependencyResolver.setupProjects(session, project, reactorProject);

tycho-core/src/test/java/org/eclipse/tycho/core/test/DependencyComputerTest.java

@@ -47,8 +47,8 @@
 import org.eclipse.tycho.core.osgitools.DependenciesResolver;
 import org.eclipse.tycho.core.osgitools.DependencyComputer;
 import org.eclipse.tycho.core.osgitools.DependencyComputer.DependencyEntry;
+import org.eclipse.tycho.test.util.MavenSessionUtils;
 import org.eclipse.tycho.core.osgitools.EquinoxResolver;
-import org.eclipse.tycho.core.utils.MavenSessionUtils;
 import org.eclipse.tycho.testing.AbstractTychoMojoTestCase;
 import org.eclipse.tycho.version.TychoVersion;
 import org.junit.Assert;

tycho-core/src/main/java/org/eclipse/tycho/core/utils/MavenSessionUtils.java → tycho-core/src/test/java/org/eclipse/tycho/test/util/MavenSessionUtils.java

@@ -10,7 +10,7 @@
  * Contributors:
  *    Sonatype Inc. - initial API and implementation
  *******************************************************************************/
-package org.eclipse.tycho.core.utils;
+package org.eclipse.tycho.test.util;
 
 import java.io.File;
 import java.util.HashMap;

tycho-surefire/tycho-surefire-plugin/src/main/java/org/eclipse/tycho/surefire/AbstractEclipseTestMojo.java

@@ -85,7 +85,6 @@
 import org.eclipse.tycho.core.TychoProject;
 import org.eclipse.tycho.core.osgitools.DefaultReactorProject;
 import org.eclipse.tycho.core.osgitools.project.BuildOutputJar;
-import org.eclipse.tycho.core.utils.TychoProjectUtils;
 import org.eclipse.tycho.dev.DevBundleInfo;
 import org.eclipse.tycho.dev.DevWorkspaceResolver;
 import org.eclipse.tycho.p2.tools.RepositoryReferences;
@@ -1046,11 +1045,10 @@ private EquinoxLaunchConfiguration createCommandLine(EquinoxInstallation testRun
         }
 
         cli.addVMArguments("-Dosgi.noShutdown=false");
-
-        Properties properties = TychoProjectUtils.getMergedProperties(project, session);
-        cli.addVMArguments("-Dosgi.os=" + PlatformPropertiesUtils.getOS(properties), //
-                "-Dosgi.ws=" + PlatformPropertiesUtils.getWS(properties), //
-                "-Dosgi.arch=" + PlatformPropertiesUtils.getArch(properties));
+        TargetEnvironment environment = TargetEnvironment.getRunningEnvironment();
+        cli.addVMArguments("-Dosgi.os=" + environment.getOs(), //
+                "-Dosgi.ws=" + environment.getWs(), //
+                "-Dosgi.arch=" + environment.getArch());
         addCustomProfileArg(cli);
         cli.addVMArguments(splitArgLine(argLine));