Add a Store::addToStore() variant that accepts a NAR

As a side effect, this ensures that signatures are propagated when
copying paths between stores.

Also refactored import/export to make use of this.

1 files changed, 2 insertions, 4 deletions

diff --git a/src/nix-store/nix-store.cc b/src/nix-store/nix-store.cc
index d63adaff32db..99fee5c65fb7 100644
--- a/src/nix-store/nix-store.cc
+++ b/src/nix-store/nix-store.cc
@@ -503,7 +503,7 @@ static void opReadLog(Strings opFlags, Strings opArgs)
             }
 
             else if (pathExists(logBz2Path)) {
-                std::cout << *decompress("bzip2", make_ref<std::string>(readFile(logBz2Path)));
+                std::cout << *decompress("bzip2", readFile(logBz2Path));
                 found = true;
                 break;
             }
@@ -703,9 +703,7 @@ static void opExport(Strings opFlags, Strings opArgs)
         throw UsageError(format("unknown flag ‘%1%’") % i);
 
     FdSink sink(STDOUT_FILENO);
-    Paths sorted = store->topoSortPaths(PathSet(opArgs.begin(), opArgs.end()));
-    reverse(sorted.begin(), sorted.end());
-    store->exportPaths(sorted, sink);
+    store->exportPaths(opArgs, sink);
 }