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 <ghc-devs-boun...@haskell.org> On Behalf Of Simon Peyton Jones
via ghc-devs
Sent: 30 August 2018 12:12
To: Alp Mestanogullari <a...@well-typed.com>; Andrey Mokhov
<andrey.mok...@newcastle.ac.uk>
Cc: ghc-devs <ghc-devs@haskell.org>
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
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