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-rw-r--r--third_party/nix/default.nix2
1 files changed, 2 insertions, 0 deletions
diff --git a/third_party/nix/default.nix b/third_party/nix/default.nix
index 54e77ec50d..cceb6b4f1b 100644
--- a/third_party/nix/default.nix
+++ b/third_party/nix/default.nix
@@ -89,6 +89,7 @@ in pkgs.llvmPackages.libcxxStdenv.mkDerivation {
 
   installCheckPhase = ''
     export NIX_DATA_DIR=$out/share
+    export NIX_TEST_VAR=foo # this is required by a language test
     make test
   '';
 
@@ -124,6 +125,7 @@ in pkgs.llvmPackages.libcxxStdenv.mkDerivation {
 
   shellHook = ''
     export NIX_DATA_DIR="${toString depotPath}/third_party"
+    export NIX_TEST_VAR=foo
   '';
 
   # TODO(tazjin): integration test setup?