diff --git a/pkgs/development/compilers/ghc/common-hadrian.nix b/pkgs/development/compilers/ghc/common-hadrian.nix
index 0cb9ea8b866e..0b22b1ff3812 100644
--- a/pkgs/development/compilers/ghc/common-hadrian.nix
+++ b/pkgs/development/compilers/ghc/common-hadrian.nix
@@ -36,7 +36,6 @@
 
   libiconv ? null,
   ncurses,
-  glibcLocales ? null,
 
   # GHC can be built with system libffi or a bundled one.
   libffi ? null,
@@ -549,8 +548,8 @@ stdenv.mkDerivation (
           "${buildTargetLlvmPackages.clang}/bin/${buildTargetLlvmPackages.clang.targetPrefix}clang"
       }"
     ''
-    + lib.optionalString (stdenv.hostPlatform.isLinux && hostPlatform.libc == "glibc") ''
-      export LOCALE_ARCHIVE="${glibcLocales}/lib/locale/locale-archive"
+    + lib.optionalString (stdenv.buildPlatform.libc == "glibc") ''
+      export LOCALE_ARCHIVE="${buildPackages.glibcLocales}/lib/locale/locale-archive"
     ''
     + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
       export NIX_LDFLAGS+=" -rpath $out/lib/ghc-${version}"
diff --git a/pkgs/development/compilers/ghc/common-make-native-bignum.nix b/pkgs/development/compilers/ghc/common-make-native-bignum.nix
index 3840ddda57db..8cde6f42148c 100644
--- a/pkgs/development/compilers/ghc/common-make-native-bignum.nix
+++ b/pkgs/development/compilers/ghc/common-make-native-bignum.nix
@@ -29,7 +29,6 @@
 
   libiconv ? null,
   ncurses,
-  glibcLocales ? null,
 
   # GHC can be built with system libffi or a bundled one.
   libffi ? null,
@@ -436,8 +435,8 @@ stdenv.mkDerivation (
       echo -n "${buildMK}" > mk/build.mk
       sed -i -e 's|-isysroot /Developer/SDKs/MacOSX10.5.sdk||' configure
     ''
-    + lib.optionalString (stdenv.hostPlatform.isLinux && hostPlatform.libc == "glibc") ''
-      export LOCALE_ARCHIVE="${glibcLocales}/lib/locale/locale-archive"
+    + lib.optionalString (stdenv.buildPlatform.libc == "glibc") ''
+      export LOCALE_ARCHIVE="${buildPackages.glibcLocales}/lib/locale/locale-archive"
     ''
     + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
       export NIX_LDFLAGS+=" -rpath $out/lib/ghc-${version}"