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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">Sigh. As an inconvenient workaround, I tried adding {-# OPTIONS_GHC -dverbose-core2core #-} to GHC.Real, and then doing<o:p></o:p></span></p>
<p class="MsoNormal" style="margin:0cm;margin-bottom:.0001pt"><span style="font-size:10.0pt;font-family:"Courier New""> cabal new-run hadrian -- -c -j4 --flavour=quick --directory=".."<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">in hadrian/<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">That did recompile GHC.Real – but all the debug output disappeared!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">I tried adding {-# OPTIONS_GHC -ddebug-output #-} as well, but that didn’t work.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">I’m stuck – any ideas?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">Simon<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin:0cm;margin-bottom:.0001pt"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> ghc-devs <ghc-devs-bounces@haskell.org>
<b>On Behalf Of </b>Simon Peyton Jones via ghc-devs<br>
<b>Sent:</b> 30 August 2018 12:12<br>
<b>To:</b> Alp Mestanogullari <alp@well-typed.com>; Andrey Mokhov <andrey.mokhov@newcastle.ac.uk><br>
<b>Cc:</b> ghc-devs <ghc-devs@haskell.org><br>
<b>Subject:</b> Hadrian<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">Alp, Andrey<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">The old build system printed out every command line; and I often copy-paste that info to build single modules.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">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?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">Where is the “how to use Hadrian” wiki page? I know you’ve been writing one.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">Simon<o:p></o:p></span></p>
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