Re: Hadrian

Hello Simon, Andrey, For “How to use Hadrian wikipage”, maybe Simon wanted this one from the GHC Wiki: https://ghc.haskell.org/trac/ghc/wiki/Building/Hadrian/QuickStart It does mention the verbose flag, but does not really explain that you can get what Simon wants, I believe. -- Best wishes, Artem чт, 30 авг. 2018 г. в 7:25, Andrey Mokhov :

Simon,

If you want to see all command lines, you can pass '--verbose' or '-V' flag to Hadrian and it will then print out everything it does.

But you can also choose which particular command lines to print in UserSettings, see:

https://github.com/snowleopard/hadrian/blob/master/doc/user-settings.md#verb...

So, you can do:

verboseCommand = input "//GHC/Real.hs"

Or, alternatively,

verboseCommand = output "//GHC/Real.hi"

Both should produce the same result (in theory).

In general, we have the following documents on Hadrian:

The README: https://github.com/snowleopard/hadrian/blob/master/README.md How to use UserSettings: https://github.com/snowleopard/hadrian/blob/master/doc/user-settings.md An overview of build flavours: https://github.com/snowleopard/hadrian/blob/master/doc/flavours.md

I hope the more Hadrian gets used, the more complete the documentation will become.

Cheers, Andrey

From: Simon Peyton Jones [mailto:simonpj@microsoft.com] Sent: 30 August 2018 12:19 To: Simon Peyton Jones ; Alp Mestanogullari < alp@well-typed.com>; Andrey Mokhov Cc: ghc-devs Subject: RE: Hadrian

Sigh. As an inconvenient workaround, I tried adding {-# OPTIONS_GHC -dverbose-core2core #-} to GHC.Real, and then doing cabal new-run hadrian -- -c -j4 --flavour=quick --directory=".." in hadrian/ That did recompile GHC.Real - but all the debug output disappeared! I tried adding {-# OPTIONS_GHC -ddebug-output #-} as well, but that didn't work. I'm stuck - any ideas? Simon

From: ghc-devs On Behalf Of Simon Peyton Jones via ghc-devs Sent: 30 August 2018 12:12 To: Alp Mestanogullari ; Andrey Mokhov < andrey.mokhov@newcastle.ac.uk> Cc: ghc-devs Subject: Hadrian

Alp, Andrey The old build system printed out every command line; and I often copy-paste that info to build single modules. Eg currently, when trying to understand #15570 I see a suspicious GHC.Real.hi. So I want to manually recompile GHC.Real (from base), adding some debug flags. How can I get the right command line to do that from the build log? Where is the "how to use Hadrian" wiki page? I know you've been writing one. Simon _______________________________________________ ghc-devs mailing list ghc-devs@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs