get source code by module name

[Csaba Hruska]

Hi,

I am experimenting with a tool and I need some help or advice.
Assuming a stack based project what is the simplest way to retrieve the source code for a module from the module name?
The module source code should be the same that GHC used when compiled the project.
I'd like to retrieve the source code for both local and stackage modules.

Thanks,
Csaba Hruska

[Michael Snoyman]

I can't think of an easy way to do it. It will come down to:

* Looking up which package the module came from (likely in the GHC package database)

* Figuring out if it's in the snapshot or local (the `stack query` command may help here)

* Finding the relevant source code, checking hs-source-dirs in the cabal file, and looking for the file in question

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[Dan Burton]

Does Intero not have a feature like this already?

It seems like we have all the info available to at least provide this as a web service for in-snapshot packages. The module-to-package relation is 1 to 1 most of the time.

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[Michael Sloan]

Hey!

Digging up this thread to mention that I've just merged this PR which has the side effect of making mappings from ModuleName to filepath available in stack's API https://github.com/commercialhaskell/stack/pull/3779/files

-Michael

[Csaba Hruska]

Excellent!

On Tue, Jan 16, 2018 at 3:29 AM, Michael Sloan <sl...@fpcomplete.com> wrote:

Hey!

I've just merged this PR which has the side effect of making mappings from ModuleName to filepath available in stack's API https://github.com/commercialhaskell/stack/pull/3779/files

-Michael

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