Hello, I'm trying to create my first KSP and it's ...

# ksp

[António Bastião]

Hello, I'm trying to create my first KSP and it's pretty much a learning project.
Everything works quite well except for this.
If I use Dagger 2 or Hilt my generated classes are deleted.
Then, if I change the processor class, the project generates the files again.
That's probably a feature, because I noticed that the files are generated only the first time I compile the project.
How can I understand what's happening?
And how can I make it work with Dagger 2?
Thanks in advance and sorry if my questions are too noob.

[Jiaxiang]

what do you mean by changing the processor class?

[António Bastião]

It's difficult to explain.
Like I mentioned, it's my first try.
But let's say that I change how a function is written, by fixing the indentation.
Because something has changed, the processor generates the file.
Same if I change the interface that I'm trying to implement with the KSP.
I think that this is related with incremental build.
Maybe a fix is to try multi run with a deferred function.
This is a hunch and I’m lacking some knowledge here.

[Jiaxiang]

a sample project would be great for us to investigate.

[António Bastião]

I believe that if I cause some “dirtiness” the processor is triggered.
Sure, I’ll push this ASAP tomorrow or Friday.
It's 22:06 here and I’m burnout.
I’ll have to work in some priorities in the next days.
If my hunch is correct and my understanding of multi runs is correct, I should be able to check if the class was generated and retry if not, right?

[Jiaxiang]

no hurries 🙂 as this is running with a KAPT processor there might be other issues.

[António Bastião]

Hi, I’ve been trying to understand the problem, but I’ve no clue unfortunately.
The repo is this https://github.com/CurtesMalteser/ksp-preferences.
What I learnt so far is that the file is generated when I build the project, but it’s deleted when I try to run the app.
If I keep building the project and trying to execute it, it will work after some tries.
This only happens if I try to use Dagger or Hilt.
But I definitely need to use it with Dagger.
It might be a noob mistake and all the help is welcome.

Is there any resources available where I can learn how the processor is triggered and how the code is generated?

Right now I’m just following the official tutorials and not really understanding what’s happening.

[António Bastião]

Hi @Jiaxiang would you be able to help me?
I’m still stuck with this.
There’s another branch https://github.com/CurtesMalteser/ksp-preferences/tree/implement_proto
This is the most recent one, and every time I try to use dagger or hilt, it doesn’t work.
What I noticed is that dagger compiles first and is what’s throwing non existent class exception.
So, my deferred logic didn’t work and I didn’t commit it.

[António Bastião]

@Jiaxiang thanks a lot.
It’s solved.
It was a couple newbie mistakes.