[GHC] #16250: Make it easy to invoke Hadrian

[GHC]

#16250: Make it easy to invoke Hadrian
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           Reporter:  goldfire       |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Build System   |           Version:  8.6.3
  (Hadrian)                          |
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 Right now, invoking Hadrian requires running `hadrian/build.sh`. That's a
 small mouthful (when using it regularly), and it crucially depends on
 being in the root directory of GHC. It would be very convenient to have
 some command (say, `build`) which would work ''anywhere'' within the GHC
 tree, e.g. by searching for the root and then running the local Hadrian
 build script. Doing this would require devs to install something locally
 (so that it's in the PATH always), but that something can be small and
 light.

 Shall we fix? Thanks.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16250>
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