diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 896dc4e8e5e2..4081fad4ffb7 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1427,10 +1427,11 @@ with pkgs;
 
     m17n = callPackage ../tools/inputmethods/ibus-engines/ibus-m17n { };
 
-    mozc = callPackage ../tools/inputmethods/ibus-engines/ibus-mozc {
+    mozc = callPackage ../tools/inputmethods/ibus-engines/ibus-mozc rec {
+      clangStdenv = libcxxStdenv; # workaround for https://github.com/NixOS/nixpkgs/issues/28223
       python = python2;
       inherit (python2Packages) gyp;
-      protobuf = protobuf3_2.override { stdenv = clangStdenv; };
+      protobuf = protobuf3_2.overrideDerivation (oldAttrs: { stdenv = clangStdenv; });
     };
 
     table = callPackage ../tools/inputmethods/ibus-engines/ibus-table {
@@ -1900,10 +1901,11 @@ with pkgs;
 
     m17n = callPackage ../tools/inputmethods/fcitx-engines/fcitx-m17n { };
 
-    mozc = callPackage ../tools/inputmethods/fcitx-engines/fcitx-mozc {
+    mozc = callPackage ../tools/inputmethods/fcitx-engines/fcitx-mozc rec {
+      clangStdenv = libcxxStdenv; # workaround for https://github.com/NixOS/nixpkgs/issues/28223
       python = python2;
       inherit (python2Packages) gyp;
-      protobuf = protobuf3_2.override { stdenv = clangStdenv; };
+      protobuf = protobuf3_2.overrideDerivation (oldAttrs: { stdenv = clangStdenv; });
     };
 
     table-other = callPackage ../tools/inputmethods/fcitx-engines/fcitx-table-other { };