hidapi: make hid_parser optional, but add it to setup

lib/hidapi/udev.py

@@ -38,7 +38,6 @@ from time import time as _timestamp
 
 import gi
 
-from hid_parser import ReportDescriptor as _ReportDescriptor
 from pyudev import Context as _Context
 from pyudev import Device as _Device
 from pyudev import DeviceNotFoundError
@@ -115,6 +114,8 @@ def _match(action, device, filterfn):
         return  # these are devices connected through a receiver so don't pick them up here
 
     try:  # if report descriptor does not indicate HID++ capabilities then this device is not of interest to Solaar
+        from hid_parser import ReportDescriptor as _ReportDescriptor
+
         hidpp_short = hidpp_long = False
         devfile = "/sys" + hid_device.get("DEVPATH") + "/report_descriptor"
         with fileopen(devfile, "rb") as fd:

setup.py

@@ -76,6 +76,7 @@ For instructions on installing Solaar see https://pwr-solaar.github.io/Solaar/in
     python_requires=">=3.7",
     install_requires=[
         'evdev (>= 1.1.2) ; platform_system=="Linux"',
+        'hid_parser (>= 0.0.3) ; platform_system=="Linux"',
         "pyudev (>= 0.13)",
         "PyYAML (>= 3.12)",
         "python-xlib (>= 0.27)",