I can't seem to import GHC modules

[mwotton]

I have the line

import GHC(parseStaticFlags, noLoc)

and flymake is choking on it, because it's in the hidden package ghc-6.12.1. Is there a place I can customise the packages flymake sees? It's in the cabal file for the package..

[kazu-yamamoto]

This problem can be fixed if we can specify "-package ghc", right?
If so, I can hack so that the option is automatically specifiedy if "import GHC" is found.
But it seems to me that linking the ghc library is very slow. Is it OK for you?

[mwotton]

I think it's better to be slow than to just fail.
does ghc-mod keep a server process around, or is a new one started each time? you might be able to avoid the cost by keeping a pre-loaded server around.

[kazu-yamamoto]

A new one started each time.
Just a question. Can we use GHC as a server?

[mwotton]

I think so - scion http://code.google.com/p/scion-lib/ starts up a scion-server process.

[kazu-yamamoto]

OK, I will look. Thank you for the information.
Since I'm very busy right now, I will come back to this issue on 23 April or so.

[kazu-yamamoto]

Current ghc-mod does not choke any lines if GHC module is used (not check any errors/warnings). Even if GHC API is used, checking a file with GHC modules is very slow. We need to consider special UI for the files using GHC modules so that only manual check is allowed.

[kazu-yamamoto]

Preventing linking results in confortable speed for -package ghc!

[mwotton]

Heh. Great. you're using the ghc-API? I think there's an -fno-code option if you're just calling ghc.

[kazu-yamamoto]

Ah! I remember the option! I set the option in GHC API.

[mwotton]

working great.