translatelocally: add buildArch flag

pkgs/by-name/tr/translatelocally/package.nix

@@ -12,6 +12,7 @@
   runCommand,
   translatelocally,
   translatelocally-models,
+  buildArch ? "x86-64",
 }:
 
 let
@@ -65,6 +66,10 @@ stdenv.mkDerivation (finalAttrs: {
   cmakeFlags = [
     "-DBLAS_LIBRARIES=-lblas"
     "-DCBLAS_LIBRARIES=-lcblas"
+
+    # See the following for context:
+    # https://github.com/NixOS/nixpkgs/pull/385549
+    (lib.optionalString stdenv.hostPlatform.isx86_64 "-DBUILD_ARCH=${buildArch}")
   ];
 
   passthru.tests = {