codegen test suite hangs with no output...

Latest test suite hangs with no output on Ubuntu 22.04.

$ stack test

Final messages:

2022-05-02 23:16:16.928939: [debug] Run process within /home/m/src/xml-typelift/: /home/m/src/xml-typelift/.stack-work/dist/x86_64-linux-tinfo6/Cabal-2.4.0.1/build/unit-tests/unit-tests

Tests.Codegen
  codegen
    compiling