On Tue, 17 Oct 2017, Jared McNeill wrote:
3. Finally, patch wpa_supplicant's driver_bsd.c to conditionally set the WPA_DRIVER_FLAGS_4WAY_HANDSHAKE capability flag and when set and a psk is present, use/abuse IEEE80211_IOC_WPAKEY to push the WPA PMK into the kernel for use by the device driver.
Missed the patch URL for this one: https://github.com/jaredmcneill/src/commit/b762c7a91f805a6ac6df5c3a132f7d7f1f6023c3