+board_reqs = []
+if os.path.exists('/proc/device-tree/compatible'):
+    with open('/proc/device-tree/compatible', 'rb') as f:
+        compat = f.read()
+    if b'nvidia,tegra' in compat:
+        board_reqs = ['Jetson.GPIO']
+    if b'brcm,bcm2835' in compat or \
+       b'brcm,bcm2836' in compat or \
+       b'brcm,bcm2837' in compat or \
+       b'brcm,bcm2838' in compat:
+        board_reqs = ['RPi.GPIO', 'rpi_ws281x>=4.0.0']
+