`nix flake check` for current system only

What’s the idiomatic way to run nix flake check such that only the current system checks are run?

I use the following hack currently:

          check =
            pkgs.runCommand "combined-checks"
                checksss = builtins.attrValues self.checks.${system};
              } ''
              echo $checksss
              touch $out

Then, run: nix build .#check.x86_64-linux.

But surely there must be a better way, so I don’t have to hardcode it in CI.

Looks like it already does, but since Haskell projects use IFD - evaluating other system attributes causes builds and breaks.