Hadrian

[Simon Peyton Jones]

Very confusingly
https://github.com/snowleopard/hadrian/blob/master/doc/user-settings.md#verbose-command-lines

speaks about verboseCommmands PLURAL, whereas it should say verboseCommand SINGLUAR.

Moreover, what is the language things you can say (i.e. where is it documented).  The "//" business, and what patterns can occur. What things other than "//" can you have?  What about 'input' etc?

Simon

|  -----Original Message-----
|  From: Andrey Mokhov <andrey.mokhov at newcastle.ac.uk>
|  Sent: 30 August 2018 12:26
|  To: Simon Peyton Jones <simonpj at microsoft.com>; Alp Mestanogullari
|  <alp at well-typed.com>
|  Cc: ghc-devs <ghc-devs at haskell.org>
|  Subject: RE: Hadrian
|  
|  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://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.c
|  om%2Fsnowleopard%2Fhadrian%2Fblob%2Fmaster%2Fdoc%2Fuser-
|  settings.md%23verbose-command-
|  lines&data=02%7C01%7Csimonpj%40microsoft.com%7C0c6118a504f74269efd508
|  d60e6b4fe7%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C63671225140342623
|  1&sdata=tMYhmIGMeVbBYjAtxWQTY5%2F4Kyfc4m981N4OTowGkbQ%3D&reserved
|  =0
|  
|  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://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.c
|  om%2Fsnowleopard%2Fhadrian%2Fblob%2Fmaster%2FREADME.md&data=02%7C01%7
|  Csimonpj%40microsoft.com%7C0c6118a504f74269efd508d60e6b4fe7%7C72f988bf86f
|  141af91ab2d7cd011db47%7C1%7C0%7C636712251403426231&sdata=7WigmQG7lbDd
|  eyhYCSaKOQEb0eeZcn0iXAbAKdwZ5A4%3D&reserved=0
|  How to use UserSettings:
|  https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.c
|  om%2Fsnowleopard%2Fhadrian%2Fblob%2Fmaster%2Fdoc%2Fuser-
|  settings.md&data=02%7C01%7Csimonpj%40microsoft.com%7C0c6118a504f74269
|  efd508d60e6b4fe7%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C63671225140
|  3426231&sdata=tRu2lO%2F6TNV3ao5tzNKO%2FAHJMWsxKX%2BqExHn78nuCvU%3D&am
|  p;reserved=0
|  An overview of build flavours:
|  https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.c
|  om%2Fsnowleopard%2Fhadrian%2Fblob%2Fmaster%2Fdoc%2Fflavours.md&data=0
|  2%7C01%7Csimonpj%40microsoft.com%7C0c6118a504f74269efd508d60e6b4fe7%7C72f
|  988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636712251403426231&sdata=Esye
|  DdAKLV9DC3PUwkqsuQ4zGoOYKcaJeEov1BAH8lU%3D&reserved=0
|  
|  I hope the more Hadrian gets used, the more complete the documentation
|  will become.
|  
|  Cheers,
|  Andrey
|  
|  From: Simon Peyton Jones [mailto:simonpj at microsoft.com]
|  Sent: 30 August 2018 12:19
|  To: Simon Peyton Jones <simonpj at microsoft.com>; Alp Mestanogullari
|  <alp at well-typed.com>; Andrey Mokhov <andrey.mokhov at newcastle.ac.uk>
|  Cc: ghc-devs <ghc-devs at haskell.org>
|  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 <ghc-devs-bounces at haskell.org> On Behalf Of Simon Peyton
|  Jones via ghc-devs
|  Sent: 30 August 2018 12:12
|  To: Alp Mestanogullari <alp at well-typed.com>; Andrey Mokhov
|  <andrey.mokhov at newcastle.ac.uk>
|  Cc: ghc-devs <ghc-devs at 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