Keep me updated as I was away for a while doing some other activities..

@joe
I managed to make the manifist from the but it gives me

# breakfast kagura
including vendor/lineage/vendorsetup.sh
build/core/product_config.mk:243: *** _nic.PRODUCTS.[[device/sony/kagura/lineage.mk]]: "device/sony/tone/platform.mk" does not exist.  Stop.
Device kagura not found. Attempting to retrieve device repository from LineageOS Github (http://github.com/LineageOS).
Repository for kagura not found in the LineageOS Github repository list. If this is in error, you may need to manually add it to your local_manifests/roomservice.xml.
build/core/product_config.mk:243: *** _nic.PRODUCTS.[[device/sony/kagura/lineage.mk]]: "device/sony/tone/platform.mk" does not exist.  Stop.
build/core/product_config.mk:243: *** _nic.PRODUCTS.[[device/sony/kagura/lineage.mk]]: "device/sony/tone/platform.mk" does not exist.  Stop.

** Don't have a product spec for: 'lineage_kagura'
** Do you have the right repo manifest?

here is my xml file

<?xml version="1.0" encoding="UTF-8"?>
<manifest>
    <remote name="beidl" fetch="git://github.com/fredldotme" />
    <remote name="tone" fetch="git://github.com/Tone-keep-on-4-4" />
    <remote name="sony" fetch="git://github.com/sonyxperiadev" />
    <remote name="nxp" fetch="git://github.com/NXPNFCProject/" />
    <project path="device/sony/kagura" name="device-sony-kagura" revision="lineage-15.1" remote="tone" />
    <project path="device/sony/common" name="device-sony-common" revision="lineage-15.1" remote="tone" />
    <project path="device/sony/common-init" name="device-sony-common-init" revision="n-mr1-ubports" remote="beidl" />

    <project path="external/gpg" name="android_external_gpg" revision="halium-7.1" remote="beidl" />
    <project path="external/libnfc-nci" name="platform/external/libnfc-nci" groups="pdk" remote="aosp" />

    <project path="external/toybox" name="android_external_toybox" revision="halium-7.1" remote="beidl" />

    <project path="hardware/qcom/audio" name="android_hardware_qcom_audio_aosp" groups="qcom,qcom_audio" revision="halium-7.1" remote="beidl" />


    <project path="kernel/sony/kagura" name="Kernel" remote="tone" />



    <project path="vendor/nxp/" name="vendor-nxp" groups="device" remote="sony" revision="master" />
    <project path="vendor/nxp/NXPNFCC_FW" name="NXPNFCC_FW" groups="device" remote="nxp" revision="master" />
    <project path="vendor/broadcom/bt-fm" name="vendor-broadcom-bt-fm" groups="device" remote="sony" revision="master" />
    <project path="vendor/broadcom/wlan" name="vendor-broadcom-wlan" groups="device" remote="sony" revision="master" />
    <project path="vendor/qcom/opensource/fm" name="vendor-qcom-opensource-fm" groups="device" remote="sony" revision="master" />
    <project path="vendor/qcom/opensource/location" name="vendor-qcom-opensource-location" groups="device" remote="sony" revision="master" />
    <project path="vendor/qcom/opensource/time-services" name="vendor-qcom-opensource-time-services" groups="device" remote="sony" revision="master" />
    <project path="vendor/qcom/opensource/wlan" name="hardware-qcom-wlan" groups="device" remote="sony" revision="master" />

    <project path="vendor/oss/fingerprint"  name="vendor-sony-oss-fingerprint" groups="device" remote="sony" revision="android-7.1.1_r55" />
    <project path="vendor/oss/macaddrsetup" name="macaddrsetup" groups="device" remote="sony" revision="master" />
    <project path="vendor/oss/thermanager" name="thermanager" groups="device" remote="sony" revision="master" />
    <project path="vendor/oss/timekeep" name="timekeep" groups="device" remote="sony" revision="master" />
    <project path="vendor/oss/transpower" name="transpower" groups="device" remote="sony" revision="android-7.1.1_r55" />
    <project path="vendor/oss/json-c" name="json-c" groups="device" remote="sony" revision="master" />
</manifest>

hope this helps I'll continue tomorrow cuz now it's kind of late have a nice day

Greetings joe,
I'm trying to build something similar for my F8331 but I don't know where to start as there is no official lineageos for it ?
don't know if I can build lineage OS first then port it to ubuntu ...... thanks for sharing .