diff --git a/pkgs/test/cross/default.nix b/pkgs/test/cross/default.nix
index 8daa03c56222..b13c41a19053 100644
--- a/pkgs/test/cross/default.nix
+++ b/pkgs/test/cross/default.nix
@@ -145,6 +145,12 @@ let
     pkgs.pkgsCross.mips64el-linux-gnuabi64.stdenv
     pkgs.pkgsCross.mips64el-linux-gnuabin32.stdenv
     pkgs.pkgsCross.mingwW64.stdenv
+
+  ] ++ lib.optionals (with pkgs.stdenv.buildPlatform; isx86_64 && isLinux) [
+    # Musl-to-glibc cross on the same architecture tends to turn up
+    # lots of interesting corner cases.  Only expected to work for
+    # x86_64-linux buildPlatform.
+    pkgs.pkgsMusl.pkgsCross.gnu64.hello
   ];
 
 in {