Change all write paths to /var/run/python-validity

This is to ensure functionality of the python-validity
on systems who restrict write access to the /usr directory,
like Fedora Silverblue.

bin/validity-sensors-firmware

@@ -32,7 +32,7 @@ from usb import core as usb_core
 from validitysensor.firmware_tables import FIRMWARE_NAMES, FIRMWARE_URIS
 from validitysensor.usb import SupportedDevices
 
-python_validity_data = '/usr/share/python-validity/'
+python_validity_data = '/var/run/python-validity/'
 
 
 def download_and_extract_fw(dev_type, fwdir, fwuri=None):

dbus_service/dbus-service

@@ -191,7 +191,7 @@ class Device(dbus.service.Object):
         return hexlify(tls.app(unhexlify(cmd))).decode()
 
 
-backoff_file = '/usr/share/python-validity/backoff'
+backoff_file = '/var/run/python-validity/backoff'
 
 
 # I don't know how to tell systemd to backoff in case of multiple instance of the same template service, help!

validitysensor/sensor.py

@@ -20,7 +20,7 @@ from .usb import usb, CancelledException
 from .util import assert_status, unhex
 
 # TODO: this should be specific to an individual device (system may have more than one sensor)
-calib_data_path = '/usr/share/python-validity/calib-data.bin'
+calib_data_path = '/var/run/python-validity/calib-data.bin'
 
 line_update_type1_devices = [
     0xB5, 0x885, 0xB3, 0x143B, 0x1055, 0xE1, 0x8B1, 0xEA, 0xE4, 0xED, 0x1825, 0x1FF5, 0x199

validitysensor/upload_fwext.py

@@ -8,7 +8,7 @@ from .flash import write_flash_all, write_fw_signature, get_fw_info
 from .sensor import reboot, write_hw_reg32, read_hw_reg32, identify_sensor
 from .usb import usb, SupportedDevices
 
-firmware_home = '/usr/share/python-validity'
+firmware_home = '/var/run/python-validity'
 
 
 def default_fwext_name():