* Get rid of the substitutes database table (NIX-47). Instead, if we

  need any info on substitutable paths, we just call the substituters
  (such as download-using-manifests.pl) directly.  This means that
  it's no longer necessary for nix-pull to register substitutes or for
  nix-channel to clear them, which makes those operations much faster
  (NIX-95).  Also, we don't have to worry about keeping nix-pull
  manifests (in /nix/var/nix/manifests) and the database in sync with
  each other.

  The downside is that there is some overhead in calling an external
  program to get the substitutes info.  For instance, "nix-env -qas"
  takes a bit longer.

  Abolishing the substitutes table also makes the logic in
  local-store.cc simpler, as we don't need to store info for invalid
  paths.  On the downside, you cannot do things like "nix-store -qR"
  on a substitutable but invalid path (but nobody did that anyway).

* Never catch interrupts (the Interrupted exception).

1 files changed, 3 insertions, 4 deletions

diff --git a/src/libstore/misc.cc b/src/libstore/misc.cc
index 1319245c057c..25529d8bac67 100644
--- a/src/libstore/misc.cc
+++ b/src/libstore/misc.cc
@@ -63,8 +63,7 @@ void queryMissing(const PathSet & targets,
             bool mustBuild = false;
             for (DerivationOutputs::iterator i = drv.outputs.begin();
                  i != drv.outputs.end(); ++i)
-                if (!store->isValidPath(i->second.path) &&
-                    !store->hasSubstitutes(i->second.path))
+                if (!store->isValidPath(i->second.path) && !store->hasSubstitutes(i->second.path))
                     mustBuild = true;
 
             if (mustBuild) {
@@ -83,8 +82,8 @@ void queryMissing(const PathSet & targets,
             if (store->isValidPath(p)) continue;
             if (store->hasSubstitutes(p))
                 willSubstitute.insert(p);
-            PathSet refs;
-            store->queryReferences(p, todo);
+            // XXX call the substituters
+            // store->queryReferences(p, todo);
         }
     }
 }