diff --git a/pkgs/by-name/gl/glusterfs/package.nix b/pkgs/by-name/gl/glusterfs/package.nix
index ebd42589a28e..b8bae4bc7c0f 100644
--- a/pkgs/by-name/gl/glusterfs/package.nix
+++ b/pkgs/by-name/gl/glusterfs/package.nix
@@ -225,15 +225,17 @@ stdenv.mkDerivation (finalAttrs: {
 
   doInstallCheck = true;
 
-  # Below we run Python programs. That generates .pyc/.pyo files.
-  # By default they are indeterministic because such files contain time stamps
-  # (see https://nedbatchelder.com/blog/200804/the_structure_of_pyc_files.html).
-  # So we use the same environment variables as in
-  #   https://github.com/NixOS/nixpkgs/blob/249b34aadca7038207492f29142a3456d0cecec3/pkgs/development/interpreters/python/mk-python-derivation.nix#L61
-  # to make these files deterministic.
-  # A general solution to this problem might be brought by #25707.
-  DETERMINISTIC_BUILD = 1;
-  PYTHONHASHSEED = 0;
+  env = {
+    # Below we run Python programs. That generates .pyc/.pyo files.
+    # By default they are indeterministic because such files contain time stamps
+    # (see https://nedbatchelder.com/blog/200804/the_structure_of_pyc_files.html).
+    # So we use the same environment variables as in
+    #   https://github.com/NixOS/nixpkgs/blob/249b34aadca7038207492f29142a3456d0cecec3/pkgs/development/interpreters/python/mk-python-derivation.nix#L61
+    # to make these files deterministic.
+    # A general solution to this problem might be brought by #25707.
+    DETERMINISTIC_BUILD = 1;
+    PYTHONHASHSEED = 0;
+  };
 
   installCheckPhase = ''
     # Tests that the above programs work without import errors.