Cutelyst misses `pcre.h` to compile, adding `pkgs.pcre` as build input fixes the compilation. This unbreaks `virtlyst` and the corresponding module as well. See also https://hydra.nixos.org/build/86293236
Co-authored-by: Maximilian Bosch <maximilian@mbosch.me> Co-authored-by: elseym <elseym@me.com>