Add repository override option

RELNOTES: Adds a --override_repository option that takes a repository
name and path. This forces Bazel to use the directory at that path
for the repository. Example usage:
`--override_repository=foo=/home/user/gitroot/foo`.

Fixes #1266

PiperOrigin-RevId: 153599291

3 files changed, 13 insertions, 2 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/PrecomputedValue.java b/src/main/java/com/google/devtools/build/lib/skyframe/PrecomputedValue.java
index f0d06e0be8..2619af2b39 100644
--- a/src/main/java/com/google/devtools/build/lib/skyframe/PrecomputedValue.java
+++ b/src/main/java/com/google/devtools/build/lib/skyframe/PrecomputedValue.java
@@ -60,6 +60,11 @@ public final class PrecomputedValue implements SkyValue {
     void inject(Injectable injectable) {
       injectable.inject(precomputed.key, new PrecomputedValue(supplier.get()));
     }
+
+    @Override
+    public String toString() {
+      return precomputed + ": " + supplier.get();
+    }
   }
 
   public static <T> Injected injected(Precomputed<T> precomputed, Supplier<T> value) {
diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/SkyframeExecutor.java b/src/main/java/com/google/devtools/build/lib/skyframe/SkyframeExecutor.java
index fe5b1d4513..dfc2657aa7 100644
--- a/src/main/java/com/google/devtools/build/lib/skyframe/SkyframeExecutor.java
+++ b/src/main/java/com/google/devtools/build/lib/skyframe/SkyframeExecutor.java
@@ -701,12 +701,13 @@ public abstract class SkyframeExecutor implements WalkableGraphFactory {
       PrecomputedValue.BLAZE_DIRECTORIES.set(injectable(), directories);
       PrecomputedValue.PRODUCT_NAME.set(injectable(), productName);
       injectBuildInfoFactories();
-      injectExtraPrecomputedValues();
+      injectExtraPrecomputedValues(extraPrecomputedValues);
       needToInjectPrecomputedValuesForAnalysis = false;
     }
   }
 
-  private void injectExtraPrecomputedValues() {
+  public void injectExtraPrecomputedValues(
+      List<PrecomputedValue.Injected> extraPrecomputedValues) {
     for (PrecomputedValue.Injected injected : extraPrecomputedValues) {
       injected.inject(injectable());
     }
diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/WorkspaceNameValue.java b/src/main/java/com/google/devtools/build/lib/skyframe/WorkspaceNameValue.java
index 1fccf6d4da..c752d5829d 100644
--- a/src/main/java/com/google/devtools/build/lib/skyframe/WorkspaceNameValue.java
+++ b/src/main/java/com/google/devtools/build/lib/skyframe/WorkspaceNameValue.java
@@ -98,5 +98,10 @@ public class WorkspaceNameValue implements SkyValue {
     public int hashCode() {
       return HASHCODE;
     }
+
+    @Override
+    public String toString() {
+      return "#";
+    }
   }
 }