Hi there! Thanks for the efforts. I have been through that (migration to Android 14) recently so if you face any issues, I may be able to help.
Also, please consider joining https://aosp-devs.org and its discord server, if you would like more people to contribute :)

Oh, hi @khvMX. Maybe you can help me. Were you able to migrate and compile the sdk-addon?
I'am facing some troubles running the make sdk_addon command here. Looks like the java_sdk_library is trying to find the modules helloworldservice.api.public.latest, helloworldservice-removed.api.public.latest, helloworldservice.api.system.latest and helloworldservice-removed.api.system.latest, but this modules aren't being generated (or I don't know how to link then in the Android.bp). Have you faced something like that?

It should also spit out a command to generate missing api interfaces. I did not need any versioning, so I am ok with unsafe_ignore_missing_latest_api: true, in java_sdk_library target. Strangely enough it still made me generate a bunch of empty files in api/ directory.

I didn't really see this flag in the documentation, it's exactly what I need, thanks. I'll follow here, if there's any problem I'll ping you again

@khvMX did you have an idea of how can I fix this error?

build/make/core/tasks/sdk-addon.mk:83: error: overriding commands for target `out/host/linux-x86/obj/SDK_ADDON/profusion_sdk_addon_intermediates/profusion_sdk_addon--img/', previously defined at build/make/core/tasks/sdk-addon.mk:83
18:35:47 ckati failed with: exit status 1

@MaironLucas I didn't have "overriding" problems, I usually had missing files because I was not building an emulator.
My understanding is that profusion_sdk_addon--img is the emulator package which you can create an AVD with and add to Android Studio. So you may be overriding/duplicating some of its targets, possibly by including something twice via call inherit-product.

Btw., if you want to have e.g., profusion_sdk_addon-linux-img instead of profusion_sdk_addon--img, you can add this to your sdk_addon makefile:

INTERNAL_SDK_HOST_OS_NAME := $(HOST_OS)

I have spent most of the time in the build/make/core/tasks/sdk-addon.mk, often that was the only source of answers.

@khvMX I thinked that "call inherit-product" can be trying to create the img twice, but I can't find where this is happening. Honestly, this is my first time working with AOSP and SDK-Addon, so I don't understand exactly how the things work and connect yet.
I already tried to remove the $(call inherit-product, device/profusion/profusion_sdk_addon/profusion_sdk_addon.mk) line from aosp_x86_64.mk and the $(call inherit-product, device/profusion/common/profusion-packages.mk) line from mainline_system.mk. But this way compilation failed on the begining.
I created a draft for the branch I'm working on, can you take a quick look and see if you spot something that I am doing wrong?