I flashed rootfs, followed the guide, etc.
The phone shows up as:

dmesg -w:

[186414.384587] usb 1-9: USB disconnect, device number 105
[186414.510363] usb 1-9: new high-speed USB device number 106 using xhci_hcd
[186414.654782] usb 1-9: New USB device found, idVendor=18d1, idProduct=d001, bcdDevice= 2.32
[186414.654785] usb 1-9: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[186414.654787] usb 1-9: Product: Failed to boot
[186414.654788] usb 1-9: Manufacturer: Halium initrd
[186414.654790] usb 1-9: SerialNumber: Halium initrd Debug telnet on port 23 on rndis0 192.168.2.15 - also running udhcpd
[186414.658648] rndis_host 1-9:1.0 usb0: register 'rndis_host' at usb-0000:00:14.0-9, RNDIS device, d6:83:a8:c5:4d:b7

EDIT: the phone is an LG-G3 (D855) which uses armv7 and the rootfs i chose was armhf halium 9.

how about trying:

(halium 9)
huawei_kiwi.xml:

<?xml version="1.0" encoding="UTF-8"?>
<manifest>
    <remote name="LineageOS" fetch="https://github.com/LineageOS" revision="lineage-16.0"/>
    <remote name="TheMuppets" fetch="https://github.com/TheMuppets" revision="lineage-16.0" />
    <project path="device/huawei/kiwi" name="android_device_huawei_kiwi" remote="LineageOS" revision="lineage-16.0" />
    <project path="kernel/huawei/kiwi" name="android_kernel_huawei_kiwi" remote="LineageOS" revision="lineage-16.0" />
    <project path="vendor/huawei/" name="proprietary_vendor_huawei" remote="TheMuppets" revision="lineage-16.0" />
</manifest>