[GHC] #16056: Hadrian failure: Values have changed since being depended upon

[GHC]

#16056: Hadrian failure: Values have changed since being depended upon
-------------------------------------+-------------------------------------
           Reporter:  bgamari        |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  high           |         Milestone:  8.8.1
          Component:  Build System   |           Version:  8.7
  (Hadrian)                          |
           Keywords:                 |  Operating System:  Windows
       Architecture:                 |   Type of failure:  Building GHC
  Unknown/Multiple                   |  failed
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
-------------------------------------+-------------------------------------
 The Hadrian build on Windows appears to fail with:
 {{{
 /--------------------------------------------------------------------------\
 | Successfully built program 'haddock' (Stage2).
 |
 | Executable: _build/stage2/bin/haddock.exe
 |
 | Program synopsis: A documentation-generation tool for Haskell libraries.
 |
 \--------------------------------------------------------------------------/
 shakeArgsWith                        0.002s    0%
 Function shake                       0.035s    0%
 Database read                        0.003s    0%
 With database                        0.001s    0%
 Running rules                     2815.075s   99%
 =========================
 Pool finished (9025 threads, 8 max)  0.001s    0%
 Lint checking                        0.641s    0%
 Total                             2815.758s  100%
 Lint checking error - 520 values have changed since being depended upon:
   Key:  _build/stage1/gmp/objs/zero_p.o
   Old:  (Just File {mod=0x88773CC6,size=0x2EA,digest=0xACFF03E6},"")
   New:  File {mod=0x8C6CE092,size=0x2EA,digest=0xACFF03E6}

   Key:  _build/stage1/gmp/objs/zero.o
   Old:  (Just File {mod=0x88DC1816,size=0x2F8,digest=0x586B32DC},"")
   New:  File {mod=0x8CA46DC3,size=0x2F8,digest=0x586B32DC}

   Key:  _build/stage1/gmp/objs/xor_n.o
   Old:  (Just File {mod=0x88D86EC7,size=0x1DF,digest=0xFBB5353},"")
   New:  File {mod=0x8CA1D672,size=0x1DF,digest=0xFBB5353}

 ...
 }}}

 All paths listed are in `_build/stage1/gmp` and all changed only in their
 mtime.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16056>
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