diff --git a/pkgs/development/haskell-modules/generic-builder.nix b/pkgs/development/haskell-modules/generic-builder.nix
index f1495422edbc..73851786f830 100644
--- a/pkgs/development/haskell-modules/generic-builder.nix
+++ b/pkgs/development/haskell-modules/generic-builder.nix
@@ -120,7 +120,6 @@ stdenv.mkDerivation ({
   propagatedNativeBuildInputs = optionals hasActiveLibrary propagatedBuildInputs;
 
   LANG = "en_US.UTF-8";         # GHC needs the locale configured during the Haddock phase.
-  LOCALE_ARCHIVE = optionalString stdenv.isLinux "${glibcLocales}/lib/locale/locale-archive";
 
   setupCompilerEnvironmentPhase = ''
     runHook preSetupCompilerEnvironment
@@ -298,4 +297,5 @@ stdenv.mkDerivation ({
 // optionalAttrs (postInstall != "")    { inherit postInstall; }
 // optionalAttrs (preFixup != "")       { inherit preFixup; }
 // optionalAttrs (postFixup != "")      { inherit postFixup; }
+// optionalAttrs (stdenv.isLinux)       { LOCALE_ARCHIVE = "${glibcLocales}/lib/locale/locale-archive"; }
 )