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-rw-r--r--pkgs/development/python-modules/generic/default.nix1
1 files changed, 1 insertions, 0 deletions
diff --git a/pkgs/development/python-modules/generic/default.nix b/pkgs/development/python-modules/generic/default.nix
index f72fbff1806a..d32c6818bb26 100644
--- a/pkgs/development/python-modules/generic/default.nix
+++ b/pkgs/development/python-modules/generic/default.nix
@@ -68,6 +68,7 @@ python.stdenv.mkDerivation (attrs // {
   pythonPath = [ setuptools ] ++ pythonPath;
 
   preConfigure = ''
+    export DETERMINISTIC_BUILD=1
     PYTHONPATH="${offlineDistutils}/lib/${python.libPrefix}/site-packages:$PYTHONPATH"
     ${preConfigure}
   '';