nix-store -q --roots: Respect the gc-keep-outputs/gc-keep-derivations settings

So if a path is not garbage solely because it's reachable from a root
due to the gc-keep-outputs or gc-keep-derivations settings, ‘nix-store
-q --roots’ now shows that root.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/nix-daemon/nix-daemon.cc b/src/nix-daemon/nix-daemon.cc
index 9b3c5bda19..35e5c546e9 100644
--- a/src/nix-daemon/nix-daemon.cc
+++ b/src/nix-daemon/nix-daemon.cc
@@ -334,6 +334,7 @@ static void performOp(unsigned int clientVersion,
 
     case wopQueryReferences:
     case wopQueryReferrers:
+    case wopQueryValidDerivers:
     case wopQueryDerivationOutputs: {
         Path path = readStorePath(from);
         startWork();
@@ -342,6 +343,8 @@ static void performOp(unsigned int clientVersion,
             store->queryReferences(path, paths);
         else if (op == wopQueryReferrers)
             store->queryReferrers(path, paths);
+        else if (op == wopQueryValidDerivers)
+            paths = store->queryValidDerivers(path);
         else paths = store->queryDerivationOutputs(path);
         stopWork();
         writeStrings(paths, to);