From bc081bcd816542d66f1578788b93df4d7e07b135 Mon Sep 17 00:00:00 2001
From: regnat <rg@regnat.ovh>
Date: Thu, 24 Sep 2020 10:11:58 +0200
Subject: Inline `unkownHashes`

See https://github.com/NixOS/nix/pull/4056#discussion_r493661632
---
 src/libstore/derivations.cc | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/libstore/derivations.cc b/src/libstore/derivations.cc
index 3b3a25391..517ecfaa2 100644
--- a/src/libstore/derivations.cc
+++ b/src/libstore/derivations.cc
@@ -475,8 +475,6 @@ static const DrvHashModulo & pathDerivationModulo(Store & store, const StorePath
     return h->second;
 }
 
-UnknownHashes unknownHashes;
-
 /* See the header for interface details. These are the implementation details.
 
    For fixed-output derivations, each hash in the map is not the
@@ -499,7 +497,7 @@ DrvHashModulo hashDerivationModulo(Store & store, const Derivation & drv, bool m
     /* Return a fixed hash for fixed-output derivations. */
     switch (drv.type()) {
     case DerivationType::CAFloating:
-        return unknownHashes;
+        return UnknownHashes {};
     case DerivationType::CAFixed: {
         std::map<std::string, Hash> outputHashes;
         for (const auto & i : drv.outputs) {
@@ -545,7 +543,7 @@ DrvHashModulo hashDerivationModulo(Store & store, const Derivation & drv, bool m
             },
         }, res);
         if (hasUnknownHash) {
-            return unknownHashes;
+            return UnknownHashes {};
         }
     }
 
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