Move substitution into Input::fetch()

Closes #3520.

1 files changed, 0 insertions, 30 deletions

diff --git a/src/libexpr/flake/flake.cc b/src/libexpr/flake/flake.cc
index 9741d98c5..54282d40f 100644
--- a/src/libexpr/flake/flake.cc
+++ b/src/libexpr/flake/flake.cc
@@ -52,36 +52,6 @@ static std::tuple<fetchers::Tree, FlakeRef, FlakeRef> fetchOrSubstituteTree(
     bool allowLookup,
     FlakeCache & flakeCache)
 {
-    /* The tree may already be in the Nix store, or it could be
-       substituted (which is often faster than fetching from the
-       original source). So check that. */
-    if (originalRef.input.isDirect() && originalRef.input.isImmutable() && originalRef.input.hasAllInfo()) {
-        try {
-            auto storePath = originalRef.input.computeStorePath(*state.store);
-
-            state.store->ensurePath(storePath);
-
-            debug("using substituted/cached input '%s' in '%s'",
-                originalRef, state.store->printStorePath(storePath));
-
-            auto actualPath = state.store->toRealPath(storePath);
-
-            if (state.allowedPaths)
-                state.allowedPaths->insert(actualPath);
-
-            return {
-                Tree {
-                    .actualPath = actualPath,
-                    .storePath = std::move(storePath),
-                },
-                originalRef,
-                originalRef
-            };
-        } catch (Error & e) {
-            debug("substitution of input '%s' failed: %s", originalRef, e.what());
-        }
-    }
-
     auto resolvedRef = lookupInFlakeCache(flakeCache,
         maybeLookupFlake(state.store,
             lookupInFlakeCache(flakeCache, originalRef), allowLookup));