Working with null modem

Reference of the cable:

• Product: USB to USB Null Modem Cable
• Part number: USB NMC-2.5M
• Brand: FTDI Chip

Drivers for MacOS:

• USB serial on MacOS
• FTDI Chip drivers

On the host side:

sudo picocom -b 115200 /dev/tty.usbserial-1

On the guest VM side:

  boot.kernelParams = [
    "console=ttyUSB0,115200" "earlyprintk=ttyUSB0,115200"
  ];

  systemd.services."serial-getty@ttyUSB0" = {
    enable = true;
    wantedBy = [ "getty.target" ]; # to start at boot
    serviceConfig.Restart =  "always"; # restart when session is closed
  };