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-rw-r--r--third_party/nix/src/libstore/derivations.hh4
1 files changed, 1 insertions, 3 deletions
diff --git a/third_party/nix/src/libstore/derivations.hh b/third_party/nix/src/libstore/derivations.hh
index 63527149d8..dfdebdd01e 100644
--- a/third_party/nix/src/libstore/derivations.hh
+++ b/third_party/nix/src/libstore/derivations.hh
@@ -42,10 +42,8 @@ using DerivationOutputs = absl::btree_map<std::string, DerivationOutput>;
 
 /* For inputs that are sub-derivations, we specify exactly which
    output IDs we are interested in. */
-// TODO(grfn): change to absl::flat_hash_map
-using DerivationInputs = std::map<Path, StringSet>;
+using DerivationInputs = absl::btree_map<Path, StringSet>;
 
-// TODO(grfn): change to absl::flat_hash_map
 using StringPairs = std::map<std::string, std::string>;
 
 struct BasicDerivation {