* 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, 6 insertions, 6 deletions

diff --git a/src/libstore/remote-store.cc b/src/libstore/remote-store.cc
index 820bf66ad9..c5d13bf494 100644
--- a/src/libstore/remote-store.cc
+++ b/src/libstore/remote-store.cc
@@ -164,12 +164,6 @@ bool RemoteStore::isValidPath(const Path & path)
 }
 
 
-Substitutes RemoteStore::querySubstitutes(const Path & path)
-{
-    throw Error("not implemented 2");
-}
-
-
 bool RemoteStore::hasSubstitutes(const Path & path)
 {
     writeInt(wopHasSubstitutes, to);
@@ -221,6 +215,12 @@ Path RemoteStore::queryDeriver(const Path & path)
 }
 
 
+PathSet RemoteStore::querySubstitutablePaths()
+{
+    throw Error("not implemented");
+}
+
+
 Path RemoteStore::addToStore(const Path & _srcPath, bool fixed,
     bool recursive, string hashAlgo, PathFilter & filter)
 {