Add infra for experimental store implemenations

This is analogous to that for experimental settings and flags that we
have also added as of late.

1 files changed, 4 insertions, 2 deletions

diff --git a/src/nix/main.cc b/src/nix/main.cc
index df66beb8c..c5a9c8b33 100644
--- a/src/nix/main.cc
+++ b/src/nix/main.cc
@@ -180,8 +180,10 @@ struct NixArgs : virtual MultiCommand, virtual MixCommonArgs
         for (auto & implem : *Implementations::registered) {
             auto storeConfig = implem.getConfig();
             auto storeName = storeConfig->name();
-            stores[storeName]["doc"] = storeConfig->doc();
-            stores[storeName]["settings"] = storeConfig->toJSON();
+            auto & j = stores[storeName];
+            j["doc"] = storeConfig->doc();
+            j["settings"] = storeConfig->toJSON();
+            j["experimentalFeature"] = storeConfig->experimentalFeature();
         }
         res["stores"] = std::move(stores);