[GHC] #15576: Hadrian puts its build tree in the wrong place

[GHC]

#15576: Hadrian puts its build tree in the wrong place
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        Reporter:  simonpj           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.6.1
       Component:  Compiler          |              Version:  8.4.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by snowleopard):

 Ah, now I'm confused.

 If you run Hadrian from `/playpen/ghc` I don't understand why build
 results appear in `/home/simonpj/ghc`.

 > Is it difficult to achieve for some reason?

 Actually, I would say achieving the current behaviour seems difficult!

 I think the magic symlink-traversal code in `build.sh` and
 `build.cabal.sh` has something to do with it. I believe it was added by
 Herbert, but I don't recall why.

 Can you try building and running Hadrian directly using Cabal?

 {{{
 cd hadrian
 cabal new-build --disable-profiling --disable-documentation -j exe:hadrian
 cabal new-run hadrian -- -c -j4 --flavour=quick --directory=".."
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15576#comment:3>
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