GHC API question: resolving dependencies for modules

[Matthew Pickering]

This doesn't answer your question directly but if you want to gather
information about a module then using a source plugin would probably
be easier and more robust than using the GHC API.

You need to write a function of type:

```
ModSummary -> TcGblEnv -> TcM TcGblEnv
```

In `TcGblEnv` you will find `tcg_rdr_env` which contains all top-level
things and describes how they came to be in scope.

Source plugins will be in GHC 8.6.

Cheers,

Matt


On Thu, Jun 21, 2018 at 10:06 AM, Dmitriy Kovanikov <kovanikov at gmail.com> wrote:
> Hello!
>
> I’m trying to use GHC as a library. And my goal is to be able to gather
> information about where each function or data type came from. I’ve started
> by simply calling `getNamesInScope` function and observing its result. Here
> is my code:
>
> * Main.hs: https://lpaste.net/9026688686753841152
>
> And here is the code for my test modules:
>
> * test/X.hs: https://lpaste.net/6844657232357883904
> * test/Y.hs: https://lpaste.net/8673289058127970304
>
> Unfortunately, my implementation doesn't work since I’m not very familiar
> with GHC API.
> And I see the following errors after executing my `Main.hs` file (I’m using
> ghc-8.2.2):
>
> * error messages: https://lpaste.net/3316737208131518464
>
> Could you please point me to places or parts of GHC API or some
> documentation about module dependencies and how to make ghc see imports of
> other modules? I can’t find simple and small enough usage example of this
> part of the library.
>
> Thanks in advance,
> Dmitrii Kovanikov
>
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