* Unify exportReferencesGraph and exportBuildReferencesGraph, and make

  sure that it works as expected when you pass it a derivation.  That
  is, we have to make sure that all build-time dependencies are built,
  and that they are all in the input closure (otherwise remote builds
  might fail, for example).  This is ensured at instantiation time by
  adding all derivations and their sources to inputDrvs and inputSrcs.

1 files changed, 18 insertions, 48 deletions

diff --git a/src/libstore/build.cc b/src/libstore/build.cc
index 6a62345f745d..b275c9008eb0 100644
--- a/src/libstore/build.cc
+++ b/src/libstore/build.cc
@@ -935,8 +935,6 @@ void DerivationGoal::inputsRealised()
     /* Second, the input sources. */
     foreach (PathSet::iterator, i, drv.inputSrcs)
         computeFSClosure(*i, inputPaths);
-        /* !!! if `*i' is a derivation, then add the closure of every
-           output in the dependency graph to `inputPaths'. */
 
     debug(format("added input paths %1%") % showPaths(inputPaths));
 
@@ -1534,55 +1532,27 @@ void DerivationGoal::startBuilder()
             throw BuildError(format("`exportReferencesGraph' contains an invalid path `%1%'")
                 % storePath);
 
-        /* Write closure info to `fileName'. */
-        PathSet refs;
-        computeFSClosure(storePath, refs);
-        /* !!! in secure Nix, the writing should be done on the
-           build uid for security (maybe). */
-        writeStringToFile(tmpDir + "/" + fileName,
-            makeValidityRegistration(refs, false, false));
-    }
-
-    // The same for derivations
-    // !!! urgh, cut&paste duplication
-    s = drv.env["exportBuildReferencesGraph"];
-    ss = tokenizeString(s);
-    if (ss.size() % 2 != 0)
-        throw BuildError(format("odd number of tokens in `exportBuildReferencesGraph': `%1%'") % s);
-    for (Strings::iterator i = ss.begin(); i != ss.end(); ) {
-        string fileName = *i++;
-        checkStoreName(fileName); /* !!! abuse of this function */
-
-        /* Check that the store path is valid. */
-        Path storePath = *i++;
-        if (!isInStore(storePath))
-            throw BuildError(format("`exportBuildReferencesGraph' contains a non-store path `%1%'")
-                % storePath);
-        storePath = toStorePath(storePath);
-        if (!worker.store.isValidPath(storePath))
-            throw BuildError(format("`exportBuildReferencesGraph' contains an invalid path `%1%'")
-                % storePath);
+        /* If there are derivations in the graph, then include their
+           outputs as well.  This is useful if you want to do things
+           like passing all build-time dependencies of some path to a
+           derivation that builds a NixOS DVD image. */
+        PathSet paths, paths2;
+        computeFSClosure(storePath, paths);
+        paths2 = paths;
+
+        foreach (PathSet::iterator, j, paths2) {
+            if (isDerivation(*j)) {
+                Derivation drv = derivationFromPath(*j);
+                foreach (DerivationOutputs::iterator, k, drv.outputs)
+                    computeFSClosure(k->second.path, paths);
+            }
+        }
 
         /* Write closure info to `fileName'. */
-        PathSet refs1,refs;
-        computeFSClosure(storePath, refs1);
-	for (PathSet::iterator j = refs1.begin(); j != refs1.end() ; j++) {
-		refs.insert (*j);
-		if (isDerivation (*j)) {
-			Derivation deriv = derivationFromPath (*j);
-			for (DerivationOutputs::iterator k=deriv.outputs.begin(); 
-			    k != deriv.outputs.end(); k++) {
-				refs.insert(k->second.path);
-				
-			}
-		}
-	}
-        /* !!! in secure Nix, the writing should be done on the
-           build uid for security (maybe). */
         writeStringToFile(tmpDir + "/" + fileName,
-            makeValidityRegistration(refs, false, false));
+            makeValidityRegistration(paths, false, false));
     }
-    
+
     
     /* If `build-users-group' is not empty, then we have to build as
        one of the members of that group. */
@@ -2167,7 +2137,7 @@ SubstitutionGoal::SubstitutionGoal(const Path & storePath, Worker & worker)
 SubstitutionGoal::~SubstitutionGoal()
 {
     /* !!! Once we let substitution goals run under a build user, we
-       need to do use the setuid helper just as in ~DerivationGoal().
+       need to use the setuid helper just as in ~DerivationGoal().
        Idem for cancel. */
     if (pid != -1) worker.childTerminated(pid);
 }