How Do I Get Linux Drivers for Epson Es-50 Scanner

I got a new Document scanner the Epson ES-50. Epson doesn't provide official Linux drivers. So I was looking into scanners imported by the SANE project.

The ES-50 is listed here: as supported but unmaintained. So If I just install the basic Repos which are provided sane sane-utils libsane-common I end up not being able to use the scanner, although it gets recognized.

➜  ~ sane-find-scanner

  # sane-find-scanner will now attempt to detect your scanner. If the
  # result is different from what you expected, first make sure your
  # scanner is powered up and properly connected to your computer.

  # No SCSI scanners found. If you expected something different, make sure that
  # you have loaded a kernel SCSI driver for your SCSI adapter.

could not fetch string descriptor: Pipe error
found USB scanner (vendor=0x04b8, product=0x016c [Epson ES-50]) at libusb:001:004
  # Your USB scanner was (probably) detected. It may or may not be supported by
  # SANE. Try scanimage -L and read the backend's manpage.

  # Not checking for parallel port scanners.

  # Most Scanners connected to the parallel port or other proprietary ports
  # can't be detected by this program.

But the list provides this unmaintained backend.

My Question now is; How do I install this package to test this out?