Update the udev rules to tag devices as uaccess and seat

In order to be able to access the devices as the at-seat user, without having to
fiddle with distro-specific permissions and groups, we need to tag it both
`uaccess` and `seat`, and have the rule sorted before the one that applies
permissions based on these tags. As such, the file had to be renamed as well.

Signed-off-by: Gergely Nagy <algernon@keyboard.io>

bin/find-device-port-linux-udev

@@ -70,7 +70,7 @@ for my $path (@paths) {
     }
 
     if ( $devices{$path}{'ID_MM_CANDIDATE'}) {
-      my $rules = "$Bin/../etc/99-kaleidoscope.rules";
+      my $rules = "$Bin/../etc/60-kaleidoscope.rules";
       print_warning <<EOWARN
 
 WARNING: your udev rules are currently configured to suggest
@@ -90,4 +90,3 @@ EOWARN
 
 #debug("ERROR: I couldn't find a USB device matching the keyboard's USB Vendor and Device IDs\n");
 #print_warning(join("\n",@log));
-

docs/setup_toolchain.md

@@ -53,8 +53,8 @@ Next step: [Add keyboard support to Arduino](#add-keyboard-support-to-arduino)
 3. On Ubuntu, you will have to prevent ModemManager from attempting to grab the keyboard virtual serial port when it goes into bootloader mode:
 
     ```sh
-    $ wget https://raw.githubusercontent.com/keyboardio/Kaleidoscope/master/etc/99-kaleidoscope.rules
+    $ wget https://raw.githubusercontent.com/keyboardio/Kaleidoscope/master/etc/60-kaleidoscope.rules
-    $ sudo cp 99-kaleidoscope.rules /etc/udev/rules.d
+    $ sudo cp 60-kaleidoscope.rules /etc/udev/rules.d
     $ sudo /etc/init.d/udev reload
     ```
 

etc/60-kaleidoscope.rules

@@ -0,0 +1,16 @@
+## This file sets up a few things for selected Kaleidoscope-powered keyboards:
+## - We first symlink the device to a more friendly name, based on the product
+##   name.
+## - We then ask ModemManager to ignore the serial ports on the device, and not
+##   consider them a candidate.
+## - We also tell systemd to grant access to the device (via ACLs) to the user
+##   at-seat.
+##
+## For more information about the access part, see the following resources:
+##  - https://github.com/systemd/systemd/issues/4288
+##  - https://www.freedesktop.org/software/systemd/man/sd-login.html
+
+SUBSYSTEMS=="usb", ATTRS{idVendor}=="1209", ATTRS{idProduct}=="2300", SYMLINK+="model01", ENV{ID_MM_DEVICE_IGNORE}:="1", ENV{ID_MM_CANDIDATE}:="0", TAG+="uaccess", TAG+="seat"
+SUBSYSTEMS=="usb", ATTRS{idVendor}=="1209", ATTRS{idProduct}=="2301", SYMLINK+="model01", ENV{ID_MM_DEVICE_IGNORE}:="1", ENV{ID_MM_CANDIDATE}:="0", TAG+="uaccess", TAG+="seat"
+SUBSYSTEMS=="usb", ATTRS{idVendor}=="1209", ATTRS{idProduct}=="2302", SYMLINK+="Atreus2", ENV{ID_MM_DEVICE_IGNORE}:="1", ENV{ID_MM_CANDIDATE}:="0", TAG+="uaccess", TAG+="seat"
+SUBSYSTEMS=="usb", ATTRS{idVendor}=="1209", ATTRS{idProduct}=="2303", SYMLINK+="Atreus2", ENV{ID_MM_DEVICE_IGNORE}:="1", ENV{ID_MM_CANDIDATE}:="0", TAG+="uaccess", TAG+="seat"

etc/99-kaleidoscope.rules

@@ -1,4 +0,0 @@
-SUBSYSTEMS=="usb", ATTRS{idVendor}=="1209", ATTRS{idProduct}=="2300", SYMLINK+="model01", ENV{ID_MM_DEVICE_IGNORE}:="1", ENV{ID_MM_CANDIDATE}:="0"
-SUBSYSTEMS=="usb", ATTRS{idVendor}=="1209", ATTRS{idProduct}=="2301", SYMLINK+="model01", ENV{ID_MM_DEVICE_IGNORE}:="1", ENV{ID_MM_CANDIDATE}:="0"
-SUBSYSTEMS=="usb", ATTRS{idVendor}=="1209", ATTRS{idProduct}=="2302", SYMLINK+="Atreus2", ENV{ID_MM_DEVICE_IGNORE}:="1", ENV{ID_MM_CANDIDATE}:="0"
-SUBSYSTEMS=="usb", ATTRS{idVendor}=="1209", ATTRS{idProduct}=="2303", SYMLINK+="Atreus2", ENV{ID_MM_DEVICE_IGNORE}:="1", ENV{ID_MM_CANDIDATE}:="0"