tycho/tycho-use-custom-resolver.patch

From c6cfa4c4e6ce97cc634694987d9f87a032808e15 Mon Sep 17 00:00:00 2001
From: Roland Grunberg <rgrunber@redhat.com>
Date: Tue, 12 Jun 2012 10:38:51 -0400
Subject: [PATCH] Implement a custom resolver for Tycho in local mode.

When running in local mode, dependencies should be resolved by looking
on the local system. Remote repositories should be ignored unless
offline mode is disabled.

Automatically create a local p2 repository of all bundles on the system
so that they may be used for local dependency resolution. This is done
using a modified version of Eclipse's copy-platform script.

Since Fedora 17, we need an Execution Environment of at least JavaSE-1.6
for Eclipse bundles. Eclipse Juno platform bundles depend on
javax.annotation. In Fedora this is provided by geronimo-annotation, but
has a dependency on javax.lang.model (since 1.6).

Use the defined target environments in local mode when the property
tycho.local.keepTarget is set.

In situations where Tycho must resolve maven artifacts, upstream's
implementation only looks in the reactor cache. In Fedora, maven
artifacts may be located on the system using repository layouts
understood by XMvn. Therefore, when an artifact is not found in the
reactor cache, resolution should be attempted using the XMvn Resolver.

Change-Id: Ia1ece07ece2412bc4a88901631f3f651ad2b634b
---
 .../p2/remote/RemoteRepositoryCacheManager.java    | 14 +++++++
 .../tycho/p2/target/TargetDefinitionResolver.java  | 12 ++++--
 .../p2/target/TargetPlatformBundlePublisher.java   | 15 ++-----
 .../tycho/p2/target/TargetPlatformFactoryImpl.java | 45 ++++++++++++++++++--
 .../tycho/p2/repository/LocalRepositoryReader.java | 44 +++++++++++++++++++-
 .../facade/TargetPlatformConfigurationStub.java    |  6 ++-
 .../tycho-bundles-external.product                 |  1 +
 .../eclipse/tycho/core/locking/FileLockerImpl.java | 26 +++++++++---
 .../core/maven/TychoMavenLifecycleParticipant.java | 13 ++++++
 .../tycho/core/osgitools/AbstractTychoProject.java | 23 +++++++++++
 .../tycho/core/osgitools/OsgiBundleProject.java    | 29 ++++++++++++-
 .../DefaultTargetPlatformConfigurationReader.java  |  6 ++-
 .../tycho/p2/resolver/P2DependencyResolver.java    | 48 ++++++++++++++++++++++
 13 files changed, 253 insertions(+), 29 deletions(-)

diff --git a/tycho-bundles/org.eclipse.tycho.p2.resolver.impl/src/main/java/org/eclipse/tycho/p2/remote/RemoteRepositoryCacheManager.java b/tycho-bundles/org.eclipse.tycho.p2.resolver.impl/src/main/java/org/eclipse/tycho/p2/remote/RemoteRepositoryCacheManager.java
index 707b1c5..c8c4152 100644
--- a/tycho-bundles/org.eclipse.tycho.p2.resolver.impl/src/main/java/org/eclipse/tycho/p2/remote/RemoteRepositoryCacheManager.java
+++ b/tycho-bundles/org.eclipse.tycho.p2.resolver.impl/src/main/java/org/eclipse/tycho/p2/remote/RemoteRepositoryCacheManager.java
@@ -12,12 +12,19 @@ package org.eclipse.tycho.p2.remote;
 
 import java.io.File;
 import java.io.IOException;
+import java.net.MalformedURLException;
 import java.net.URI;
+import java.net.URL;
 
 import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.Status;
+import org.eclipse.equinox.internal.p2.repository.Activator;
 import org.eclipse.equinox.internal.p2.repository.CacheManager;
+import org.eclipse.equinox.internal.p2.repository.Messages;
 import org.eclipse.equinox.internal.p2.repository.Transport;
 import org.eclipse.equinox.p2.core.ProvisionException;
+import org.eclipse.osgi.util.NLS;
 import org.eclipse.tycho.core.facade.MavenContext;
 import org.eclipse.tycho.core.facade.MavenLogger;
 
@@ -48,6 +55,13 @@ class RemoteRepositoryCacheManager extends CacheManager {
     @Override
     public File createCache(URI repositoryLocation, String prefix, IProgressMonitor monitor) throws IOException,
             ProvisionException {
+        try {
+            new URL(repositoryLocation.toASCIIString());
+        } catch (MalformedURLException e) {
+            throw new ProvisionException(new Status(IStatus.ERROR, Activator.ID,
+                    ProvisionException.REPOSITORY_NOT_FOUND, NLS.bind(Messages.CacheManager_CannotLoadNonUrlLocation,
+                            repositoryLocation), null));
+        }
         File cacheFile = getCache(repositoryLocation, prefix);
         if (offline) {
             if (cacheFile != null) {
diff --git a/tycho-bundles/org.eclipse.tycho.p2.resolver.impl/src/main/java/org/eclipse/tycho/p2/target/TargetDefinitionResolver.java b/tycho-bundles/org.eclipse.tycho.p2.resolver.impl/src/main/java/org/eclipse/tycho/p2/target/TargetDefinitionResolver.java
index e8f7c3f..f4bb2d3 100644
--- a/tycho-bundles/org.eclipse.tycho.p2.resolver.impl/src/main/java/org/eclipse/tycho/p2/target/TargetDefinitionResolver.java
+++ b/tycho-bundles/org.eclipse.tycho.p2.resolver.impl/src/main/java/org/eclipse/tycho/p2/target/TargetDefinitionResolver.java
@@ -22,6 +22,7 @@ import java.util.Set;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.URIUtil;
 import org.eclipse.equinox.p2.core.IProvisioningAgent;
 import org.eclipse.equinox.p2.core.ProvisionException;
 import org.eclipse.equinox.p2.metadata.IInstallableUnit;
@@ -122,9 +123,14 @@ public class TargetDefinitionResolver {
 
                 List<IMetadataRepository> metadataRepositories = new ArrayList<IMetadataRepository>();
                 for (Repository repository : iuLocationDefinition.getRepositories()) {
-                    repositoryIdManager.addMapping(repository.getId(), repository.getLocation());
-                    artifactRepositories.add(repository.getLocation());
-                    metadataRepositories.add(loadRepository(repository));
+                    // We cannot resolve a non-file URI in local mode
+                    if ((System.getProperty("TYCHO_MVN_LOCAL") == null && System.getProperty("TYCHO_MVN_RPMBUILD") == null)
+                            || URIUtil.isFileURI(repository.getLocation())
+                            || "fedora".equals(repository.getLocation().getScheme())) {
+                        repositoryIdManager.addMapping(repository.getId(), repository.getLocation());
+                        artifactRepositories.add(repository.getLocation());
+                        metadataRepositories.add(loadRepository(repository));
+                    }
                 }
 
                 IQueryable<IInstallableUnit> locationUnits = new CompoundQueryable<IInstallableUnit>(
diff --git a/tycho-bundles/org.eclipse.tycho.p2.resolver.impl/src/main/java/org/eclipse/tycho/p2/target/TargetPlatformBundlePublisher.java b/tycho-bundles/org.eclipse.tycho.p2.resolver.impl/src/main/java/org/eclipse/tycho/p2/target/TargetPlatformBundlePublisher.java
index 5d6bc1f..8281167 100644
--- a/tycho-bundles/org.eclipse.tycho.p2.resolver.impl/src/main/java/org/eclipse/tycho/p2/target/TargetPlatformBundlePublisher.java
+++ b/tycho-bundles/org.eclipse.tycho.p2.resolver.impl/src/main/java/org/eclipse/tycho/p2/target/TargetPlatformBundlePublisher.java
@@ -28,6 +28,7 @@ import org.eclipse.tycho.core.facade.MavenLogger;
 import org.eclipse.tycho.p2.impl.publisher.MavenPropertiesAdvice;
 import org.eclipse.tycho.p2.impl.publisher.repo.TransientArtifactRepository;
 import org.eclipse.tycho.p2.metadata.IArtifactFacade;
+import org.eclipse.tycho.p2.repository.LocalRepositoryReader;
 import org.eclipse.tycho.p2.repository.MavenRepositoryCoordinates;
 import org.eclipse.tycho.repository.local.GAVArtifactDescriptor;
 import org.eclipse.tycho.repository.p2base.artifact.provider.IRawArtifactFileProvider;
@@ -218,15 +219,6 @@ public class TargetPlatformBundlePublisher {
             GAVArtifactDescriptor descriptorForRepository = new GAVArtifactDescriptor(baseDescriptor,
                     repositoryCoordinates);
 
-            File requiredArtifactLocation = new File(getBaseDir(), descriptorForRepository.getMavenCoordinates()
-                    .getLocalRepositoryPath());
-            File actualArtifactLocation = mavenArtifact.getLocation();
-            if (!equivalentPaths(requiredArtifactLocation, actualArtifactLocation)) {
-                throw new AssertionFailedException(
-                        "The Maven artifact to be added to the target platform is not stored at the required location on disk: required \""
-                                + requiredArtifactLocation + "\" but was \"" + actualArtifactLocation + "\"");
-            }
-
             internalAddInternalDescriptor(descriptorForRepository);
         }
 
@@ -259,8 +251,9 @@ public class TargetPlatformBundlePublisher {
 
         @Override
         protected File internalGetArtifactStorageLocation(IArtifactDescriptor descriptor) {
-            String relativePath = toInternalDescriptor(descriptor).getMavenCoordinates().getLocalRepositoryPath();
-            return new File(getBaseDir(), relativePath);
+            MavenRepositoryCoordinates coord = toInternalDescriptor(descriptor).getMavenCoordinates();
+            LocalRepositoryReader reader = new LocalRepositoryReader(getBaseDir());
+            return reader.getLocalArtifactLocation(coord.getGav(), coord.getClassifier(), coord.getExtensionOrDefault());
         }
 
         private File getBaseDir() {
diff --git a/tycho-bundles/org.eclipse.tycho.p2.resolver.impl/src/main/java/org/eclipse/tycho/p2/target/TargetPlatformFactoryImpl.java b/tycho-bundles/org.eclipse.tycho.p2.resolver.impl/src/main/java/org/eclipse/tycho/p2/target/TargetPlatformFactoryImpl.java
index 6554f43..334c425 100644
--- a/tycho-bundles/org.eclipse.tycho.p2.resolver.impl/src/main/java/org/eclipse/tycho/p2/target/TargetPlatformFactoryImpl.java
+++ b/tycho-bundles/org.eclipse.tycho.p2.resolver.impl/src/main/java/org/eclipse/tycho/p2/target/TargetPlatformFactoryImpl.java
@@ -32,6 +32,9 @@ import org.eclipse.core.runtime.URIUtil;
 import org.eclipse.equinox.p2.core.IProvisioningAgent;
 import org.eclipse.equinox.p2.core.ProvisionException;
 import org.eclipse.equinox.p2.metadata.IInstallableUnit;
+import org.eclipse.equinox.p2.metadata.expression.ExpressionUtil;
+import org.eclipse.equinox.p2.metadata.expression.IExpression;
+import org.eclipse.equinox.p2.query.IQuery;
 import org.eclipse.equinox.p2.query.IQueryResult;
 import org.eclipse.equinox.p2.query.QueryUtil;
 import org.eclipse.equinox.p2.repository.artifact.IArtifactRepositoryManager;
@@ -272,9 +275,43 @@ public class TargetPlatformFactoryImpl implements TargetPlatformFactory {
             metadataRepositories.add(localMetadataRepository);
         }
 
-        for (IMetadataRepository repository : metadataRepositories) {
-            IQueryResult<IInstallableUnit> matches = repository.query(QueryUtil.ALL_UNITS, monitor);
-            result.addAll(matches.toUnmodifiableSet());
+        if (System.getProperty("TYCHO_MVN_LOCAL") != null) {
+            final IExpression notmatchIU_ID = ExpressionUtil.parse("id != $0");
+            Set<IMetadataRepository> fedoraRepos = new HashSet<IMetadataRepository> ();
+
+            // Sanity check even though the repo we want should be at index 1
+            for (IMetadataRepository repository : metadataRepositories) {
+                if ("fedora".equals(repository.getLocation().getScheme())) {
+                    fedoraRepos.add(repository);
+                }
+            }
+
+            IQuery<IInstallableUnit> noLocalIUs = QueryUtil.createIUAnyQuery();
+
+            // Create a conjunction query that negates all IUs on the local system
+            for (IMetadataRepository repo : fedoraRepos) {
+                for (IInstallableUnit unit : repo.query(QueryUtil.ALL_UNITS, null).toUnmodifiableSet()) {
+                    noLocalIUs = QueryUtil.createCompoundQuery(noLocalIUs,
+                            QueryUtil.createMatchQuery(notmatchIU_ID, unit.getId()), true);
+                }
+            }
+
+            for (IMetadataRepository repository : metadataRepositories) {
+                IQueryResult<IInstallableUnit> matches;
+                if ("fedora".equals(repository.getLocation().getScheme())) {
+                    matches = repository.query(QueryUtil.ALL_UNITS, monitor);
+                } else {
+                    // Don't collect any remote IUs that can be found on the system
+                    // This will favour IUs in the system local p2 repository
+                    matches = repository.query(noLocalIUs, monitor);
+                }
+                result.addAll(matches.toUnmodifiableSet());
+            }
+        } else {
+            for (IMetadataRepository repository : metadataRepositories) {
+                IQueryResult<IInstallableUnit> matches = repository.query(QueryUtil.ALL_UNITS, monitor);
+                result.addAll(matches.toUnmodifiableSet());
+            }
         }
 
         result.addAll(pomDependenciesContent.gatherMavenInstallableUnits());
@@ -322,7 +359,7 @@ public class TargetPlatformFactoryImpl implements TargetPlatformFactory {
         List<URI> allRemoteArtifactRepositories = new ArrayList<URI>();
 
         for (MavenRepositoryLocation location : completeRepositories) {
-            if (!offline || URIUtil.isFileURI(location.getURL())) {
+            if (!offline || URIUtil.isFileURI(location.getURL()) || "fedora".equals(location.getURL().getScheme())) {
                 allRemoteArtifactRepositories.add(location.getURL());
             }
         }
diff --git a/tycho-bundles/org.eclipse.tycho.p2.resolver.shared/src/main/java/org/eclipse/tycho/p2/repository/LocalRepositoryReader.java b/tycho-bundles/org.eclipse.tycho.p2.resolver.shared/src/main/java/org/eclipse/tycho/p2/repository/LocalRepositoryReader.java
index 8d36462..b5c8c55 100644
--- a/tycho-bundles/org.eclipse.tycho.p2.resolver.shared/src/main/java/org/eclipse/tycho/p2/repository/LocalRepositoryReader.java
+++ b/tycho-bundles/org.eclipse.tycho.p2.resolver.shared/src/main/java/org/eclipse/tycho/p2/repository/LocalRepositoryReader.java
@@ -11,6 +11,8 @@
 package org.eclipse.tycho.p2.repository;
 
 import java.io.File;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Method;
 
 public class LocalRepositoryReader implements RepositoryReader {
 
@@ -20,8 +22,46 @@ public class LocalRepositoryReader implements RepositoryReader {
         this.localMavenRepositoryRoot = localMavenRepositoryRoot;
     }
 
+    @SuppressWarnings({ "unchecked", "rawtypes" })
     public File getLocalArtifactLocation(GAV gav, String classifier, String extension) {
-        return new File(localMavenRepositoryRoot, RepositoryLayoutHelper.getRelativePath(gav, classifier, extension));
-    }
+        File file = new File(localMavenRepositoryRoot, RepositoryLayoutHelper.getRelativePath(gav, classifier,
+                extension));
+        // In Fedora the artifact may be in an XMvn-defined repository location (not in reactor cache)
+        if (!file.exists()) {
+            try {
+                // Create Plexus config
+                Class pcclazz = Class.forName("org.codehaus.plexus.ContainerConfiguration");
+                Object conf = Class.forName("org.codehaus.plexus.DefaultContainerConfiguration").newInstance();
+                pcclazz.getMethod("setAutoWiring", boolean.class).invoke(conf, true);
+                pcclazz.getMethod("setClassPathScanning", String.class).invoke(conf, "index");
+
+                // Use plexus container to lookup the reader
+                Class pclazz = Class.forName("org.codehaus.plexus.DefaultPlexusContainer");
+                Object plexus = pclazz.getConstructor(pcclazz).newInstance(conf);
+
+                // Retrieve the workspace reader from the plexus container
+                Method mLookup = pclazz.getMethod("lookup", String.class, String.class);
+                Object reader = mLookup.invoke(plexus, "org.eclipse.aether.repository.WorkspaceReader", "ide");
 
+                // Create an Aether Artifact based on GAV, classifier, and extension
+                Class iartclazz = Class.forName("org.eclipse.aether.artifact.Artifact");
+                Class artclazz = Class.forName("org.eclipse.aether.artifact.DefaultArtifact");
+                Constructor cNew = artclazz.getConstructor(String.class, String.class, String.class, String.class,
+                        String.class);
+                Object artifact = cNew.newInstance(gav.getGroupId(), gav.getArtifactId(), classifier, extension,
+                        gav.getVersion());
+
+                // Invoke "findArtifact" method of the workspace reader on the artifact
+                Method mfindArtifact = reader.getClass().getMethod("findArtifact", iartclazz);
+                File newFile = (File) mfindArtifact.invoke(reader, artifact);
+                if (newFile != null) {
+                    file = newFile;
+                }
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
+        return file;
+
+    }
 }
diff --git a/tycho-bundles/org.eclipse.tycho.p2.resolver.shared/src/main/java/org/eclipse/tycho/p2/target/facade/TargetPlatformConfigurationStub.java b/tycho-bundles/org.eclipse.tycho.p2.resolver.shared/src/main/java/org/eclipse/tycho/p2/target/facade/TargetPlatformConfigurationStub.java
index 9505cb5..41bd9ad 100644
--- a/tycho-bundles/org.eclipse.tycho.p2.resolver.shared/src/main/java/org/eclipse/tycho/p2/target/facade/TargetPlatformConfigurationStub.java
+++ b/tycho-bundles/org.eclipse.tycho.p2.resolver.shared/src/main/java/org/eclipse/tycho/p2/target/facade/TargetPlatformConfigurationStub.java
@@ -56,7 +56,11 @@ public class TargetPlatformConfigurationStub {
     }
 
     public void addP2Repository(MavenRepositoryLocation location) {
-        this.repositories.add(location);
+        // We cannot resolve a non-file URI in local mode while offline
+        if (System.getProperty("TYCHO_MVN_RPMBUILD") == null || "file".equalsIgnoreCase(location.getURL().getScheme())
+                || "fedora".equalsIgnoreCase(location.getURL().getScheme())) {
+            this.repositories.add(location);
+        }
     }
 
     // convenience method for tests
diff --git a/tycho-bundles/tycho-bundles-external/tycho-bundles-external.product b/tycho-bundles/tycho-bundles-external/tycho-bundles-external.product
index 41705c5..c7399cb 100644
--- a/tycho-bundles/tycho-bundles-external/tycho-bundles-external.product
+++ b/tycho-bundles/tycho-bundles-external/tycho-bundles-external.product
@@ -76,6 +76,7 @@
       <plugin id="org.eclipse.tycho.noopsecurity"/>
       <plugin id="org.sat4j.core"/>
       <plugin id="org.sat4j.pb"/>
+      <plugin id="org.fedoraproject.p2"/>
    </plugins>
 
    <configurations>
diff --git a/tycho-core/src/main/java/org/eclipse/tycho/core/locking/FileLockerImpl.java b/tycho-core/src/main/java/org/eclipse/tycho/core/locking/FileLockerImpl.java
index 86253bd..cef15d2 100644
--- a/tycho-core/src/main/java/org/eclipse/tycho/core/locking/FileLockerImpl.java
+++ b/tycho-core/src/main/java/org/eclipse/tycho/core/locking/FileLockerImpl.java
@@ -27,22 +27,36 @@ public class FileLockerImpl implements FileLocker {
     final File lockMarkerFile;
 
     public FileLockerImpl(File file, Location anyLocation) {
+        File lockFileCandidate = null;
         try {
             if (file.isDirectory()) {
-                this.lockMarkerFile = new File(file, LOCKFILE_SUFFIX).getCanonicalFile();
+                lockFileCandidate = new File(file, LOCKFILE_SUFFIX).getCanonicalFile();
             } else {
-                this.lockMarkerFile = new File(file.getParentFile(), file.getName() + LOCKFILE_SUFFIX)
-                        .getCanonicalFile();
+                lockFileCandidate = new File(file.getParentFile(), file.getName() + LOCKFILE_SUFFIX).getCanonicalFile();
             }
-            if (lockMarkerFile.isDirectory()) {
-                throw new RuntimeException("Lock marker file " + lockMarkerFile + " already exists and is a directory");
+
+            if (lockFileCandidate.isDirectory()) {
+                throw new RuntimeException("Lock marker file " + lockFileCandidate + " already exists and is a directory");
             }
-            File parentDir = lockMarkerFile.getParentFile();
+            File parentDir = lockFileCandidate.getParentFile();
             if (!parentDir.isDirectory() && !parentDir.mkdirs()) {
                 throw new RuntimeException("Could not create parent directory " + parentDir + " of lock marker file");
             }
+
+            String baseDir = System.getProperty("user.dir");
+            String reactorCache = baseDir + "/.m2/";
+            // In Fedora we can only assume reactor cache is safe for read/write.
+            if (!lockFileCandidate.getAbsolutePath().startsWith(reactorCache)) {
+                String lockFileDir = reactorCache + LOCKFILE_SUFFIX;
+                // If the file is located within baseDir, no need to repeat
+                String lockFileName = file.getAbsolutePath().replace(baseDir, "").replace("/", "-").replaceFirst("-", "/") + LOCKFILE_SUFFIX;
+                lockFileCandidate = new File(lockFileDir, lockFileName);
+            }
+
+            this.lockMarkerFile = lockFileCandidate;
             this.lockFileLocation = anyLocation.createLocation(null, null, false);
             this.lockFileLocation.set(lockMarkerFile.toURL(), false, lockMarkerFile.getAbsolutePath());
+
         } catch (MalformedURLException e) {
             throw new RuntimeException(e);
         } catch (IOException e) {
diff --git a/tycho-core/src/main/java/org/eclipse/tycho/core/maven/TychoMavenLifecycleParticipant.java b/tycho-core/src/main/java/org/eclipse/tycho/core/maven/TychoMavenLifecycleParticipant.java
index 59335b9..77e7c7e 100644
--- a/tycho-core/src/main/java/org/eclipse/tycho/core/maven/TychoMavenLifecycleParticipant.java
+++ b/tycho-core/src/main/java/org/eclipse/tycho/core/maven/TychoMavenLifecycleParticipant.java
@@ -29,6 +29,7 @@ import org.apache.maven.project.MavenProject;
 import org.codehaus.plexus.PlexusContainer;
 import org.codehaus.plexus.component.annotations.Component;
 import org.codehaus.plexus.component.annotations.Requirement;
+import org.codehaus.plexus.component.repository.exception.ComponentLookupException;
 import org.codehaus.plexus.logging.Logger;
 import org.eclipse.tycho.ReactorProject;
 import org.eclipse.tycho.core.osgitools.BundleReader;
@@ -66,6 +67,18 @@ public class TychoMavenLifecycleParticipant extends AbstractMavenLifecyclePartic
         validate(projects);
         configureComponents(session);
 
+        try {
+            if (plexus.lookup("org.fedoraproject.xmvn.resolver.Resolver") != null) {
+                if (session.isOffline()) {
+                    System.setProperty("TYCHO_MVN_RPMBUILD", "");
+                } else {
+                    System.setProperty("TYCHO_MVN_LOCAL", "");
+                }
+            }
+        } catch (ComponentLookupException e) {
+            // No XMvn (Upstream Maven in use)
+        }
+
         for (MavenProject project : projects) {
             resolver.setupProject(session, project, DefaultReactorProject.adapt(project));
         }
diff --git a/tycho-core/src/main/java/org/eclipse/tycho/core/osgitools/AbstractTychoProject.java b/tycho-core/src/main/java/org/eclipse/tycho/core/osgitools/AbstractTychoProject.java
index f2602ec..c5755a0 100644
--- a/tycho-core/src/main/java/org/eclipse/tycho/core/osgitools/AbstractTychoProject.java
+++ b/tycho-core/src/main/java/org/eclipse/tycho/core/osgitools/AbstractTychoProject.java
@@ -19,6 +19,9 @@ import org.eclipse.tycho.artifacts.DependencyArtifacts;
 import org.eclipse.tycho.core.TargetPlatformConfiguration;
 import org.eclipse.tycho.core.TychoConstants;
 import org.eclipse.tycho.core.TychoProject;
+import org.eclipse.tycho.core.ee.ExecutionEnvironmentUtils;
+import org.eclipse.tycho.core.ee.UnknownEnvironmentException;
+import org.eclipse.tycho.core.ee.shared.ExecutionEnvironment;
 import org.eclipse.tycho.core.ee.shared.ExecutionEnvironmentConfiguration;
 import org.eclipse.tycho.core.facade.TargetEnvironment;
 import org.eclipse.tycho.core.osgitools.targetplatform.LocalDependencyResolver;
@@ -91,15 +94,35 @@ public abstract class AbstractTychoProject extends AbstractLogEnabled implements
 
         String configuredForcedProfile = tpConfiguration.getExecutionEnvironment();
         if (configuredForcedProfile != null) {
+            configuredForcedProfile = overrideToAtLeastJavaSE16(configuredForcedProfile);
             sink.overrideProfileConfiguration(configuredForcedProfile,
                     "target-platform-configuration <executionEnvironment>");
         }
 
         String configuredDefaultProfile = tpConfiguration.getExecutionEnvironmentDefault();
         if (configuredDefaultProfile != null) {
+            configuredDefaultProfile = overrideToAtLeastJavaSE16(configuredDefaultProfile);
             sink.setProfileConfiguration(configuredDefaultProfile,
                     "target-platform-configuration <executionEnvironmentDefault>");
         }
     }
 
+    public String overrideToAtLeastJavaSE16 (String profile) {
+        try {
+            ExecutionEnvironment ee = ExecutionEnvironmentUtils.getExecutionEnvironment(profile);
+
+            if (System.getProperty("TYCHO_MVN_LOCAL") != null || System.getProperty("TYCHO_MVN_RPMBUILD") != null) {
+                // EE must be at least JavaSE-1.6
+                final ExecutionEnvironment javaSE16 = ExecutionEnvironmentUtils.getExecutionEnvironment("JavaSE-1.6");
+                if (! ee.isCompatibleCompilerTargetLevel(javaSE16.getCompilerTargetLevelDefault())) {
+                    ee = javaSE16;
+                }
+            }
+
+            return ee.getProfileName();
+        } catch (UnknownEnvironmentException e) {
+            // can't happen, ee is validated during configuration parsing
+            return null;
+        }
+    }
 }
diff --git a/tycho-core/src/main/java/org/eclipse/tycho/core/osgitools/OsgiBundleProject.java b/tycho-core/src/main/java/org/eclipse/tycho/core/osgitools/OsgiBundleProject.java
index f7f5df1..710c8a9 100644
--- a/tycho-core/src/main/java/org/eclipse/tycho/core/osgitools/OsgiBundleProject.java
+++ b/tycho-core/src/main/java/org/eclipse/tycho/core/osgitools/OsgiBundleProject.java
@@ -47,7 +47,9 @@ import org.eclipse.tycho.core.BundleProject;
 import org.eclipse.tycho.core.PluginDescription;
 import org.eclipse.tycho.core.TychoConstants;
 import org.eclipse.tycho.core.TychoProject;
+import org.eclipse.tycho.core.ee.ExecutionEnvironmentUtils;
 import org.eclipse.tycho.core.ee.StandardExecutionEnvironment;
+import org.eclipse.tycho.core.ee.UnknownEnvironmentException;
 import org.eclipse.tycho.core.ee.shared.ExecutionEnvironment;
 import org.eclipse.tycho.core.ee.shared.ExecutionEnvironmentConfiguration;
 import org.eclipse.tycho.core.facade.BuildPropertiesParser;
@@ -489,6 +491,7 @@ public class OsgiBundleProject extends AbstractTychoProject implements BundlePro
         String pdeProfile = getEclipsePluginProject(DefaultReactorProject.adapt(project)).getBuildProperties()
                 .getJreCompilationProfile();
         if (pdeProfile != null) {
+            pdeProfile = overrideToAtLeastJavaSE16(pdeProfile);
             sink.setProfileConfiguration(pdeProfile.trim(), "build.properties");
 
         } else {
@@ -506,7 +509,31 @@ public class OsgiBundleProject extends AbstractTychoProject implements BundlePro
         if (envs.isEmpty()) {
             return null;
         }
-        return Collections.min(envs);
+
+        ExecutionEnvironment manifestMinimalEE = Collections.min(envs);
+        ExecutionEnvironment tmp;
+
+        if (System.getProperty("TYCHO_MVN_LOCAL") != null || System.getProperty("TYCHO_MVN_RPMBUILD") != null) {
+            try {
+                // EE must be at least JavaSE-1.6
+                final ExecutionEnvironment javaSE16 = ExecutionEnvironmentUtils.getExecutionEnvironment("JavaSE-1.6");
+                while (!envs.isEmpty()) {
+                    tmp = Collections.min(envs);
+                    if (tmp.isCompatibleCompilerTargetLevel(javaSE16.getCompilerTargetLevelDefault())) {
+                        manifestMinimalEE = tmp;
+                        break;
+                    }
+                    envs.remove(tmp);
+                }
+
+                if (envs.isEmpty()) {
+                    return javaSE16;
+                }
+            } catch (UnknownEnvironmentException e) {
+                // Continue
+            }
+        }
+        return manifestMinimalEE;
     }
 
 }
diff --git a/tycho-core/src/main/java/org/eclipse/tycho/core/resolver/DefaultTargetPlatformConfigurationReader.java b/tycho-core/src/main/java/org/eclipse/tycho/core/resolver/DefaultTargetPlatformConfigurationReader.java
index 4a1f157..65cbf47 100644
--- a/tycho-core/src/main/java/org/eclipse/tycho/core/resolver/DefaultTargetPlatformConfigurationReader.java
+++ b/tycho-core/src/main/java/org/eclipse/tycho/core/resolver/DefaultTargetPlatformConfigurationReader.java
@@ -64,7 +64,11 @@ public class DefaultTargetPlatformConfigurationReader {
                             + configuration.toString());
                 }
 
-                addTargetEnvironments(result, project, configuration);
+                // Use the defined environments only in local mode with tycho.local.keepTarget
+                if ((System.getProperty("TYCHO_MVN_LOCAL") == null && System.getProperty("TYCHO_MVN_RPMBUILD") == null)
+                        || System.getProperty("tycho.local.keepTarget") != null) {
+                    addTargetEnvironments(result, project, configuration);
+                }
 
                 setTargetPlatformResolver(result, configuration);
 
diff --git a/tycho-p2/tycho-p2-facade/src/main/java/org/eclipse/tycho/p2/resolver/P2DependencyResolver.java b/tycho-p2/tycho-p2-facade/src/main/java/org/eclipse/tycho/p2/resolver/P2DependencyResolver.java
index 255df24..554702d 100644
--- a/tycho-p2/tycho-p2-facade/src/main/java/org/eclipse/tycho/p2/resolver/P2DependencyResolver.java
+++ b/tycho-p2/tycho-p2-facade/src/main/java/org/eclipse/tycho/p2/resolver/P2DependencyResolver.java
@@ -15,6 +15,7 @@ import java.net.MalformedURLException;
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.net.URL;
+import java.nio.file.Paths;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
@@ -201,6 +202,53 @@ public class P2DependencyResolver extends AbstractLogEnabled implements Dependen
             pomDependencies.setProjectLocation(project.getBasedir());
         }
 
+        // Add Fedora Local P2 Repository when running in local mode
+        if (System.getProperty("TYCHO_MVN_LOCAL") != null || System.getProperty("TYCHO_MVN_RPMBUILD") != null) {
+
+            // Find all SCL roots
+            String jconfdirs = System.getProperty("JAVACONFDIRS");
+            List<String> roots = new ArrayList<String>();
+            roots.add("/");
+            if (jconfdirs != null && !jconfdirs.isEmpty()) {
+                String[] jconfRoots = jconfdirs.split(":");
+                for (String jconfRoot : jconfRoots) {
+                    roots.add(jconfRoot.replace("etc/java", ""));
+                }
+            }
+
+            String is64 = System.getProperty("os.arch").contains("64") ? "64" : "";
+            // Locations for all OSGi bundles
+            final String[] locations = new String[] { "usr/lib" + is64 + "/eclipse/plugins",
+                    "usr/share/eclipse/dropins/", "usr/lib" + is64 + "/eclipse/dropins/", "usr/share/java/",
+                    "usr/lib/java/" };
+
+            List<String> uris = new ArrayList<String>();
+            for (String root : roots) {
+                for (String loc : locations) {
+                    if (Paths.get(root, loc).toFile().exists()) {
+                        uris.add("fedora:" + root + loc);
+                    }
+                }
+            }
+            String value = System.getProperty("fedora.p2.repos");
+            if (value != null) {
+                String[] paths = value.split(",");
+                for (String path : paths) {
+                    if (Paths.get(path).toFile().exists()) {
+                        uris.add("fedora:" + path);
+                    }
+                }
+            }
+
+            for (String uri : uris) {
+                try {
+                    tpConfiguration.addP2Repository(new MavenRepositoryLocation(uri, new URI(uri)));
+                } catch (URISyntaxException e) {
+                    getLogger().warn("Unable to resolve repository URI : " + uri, e);
+                }
+            }
+        }
+
         for (ArtifactRepository repository : project.getRemoteArtifactRepositories()) {
             addEntireP2RepositoryToTargetPlatform(repository, tpConfiguration);
         }
-- 
1.9.3