[GHC] #13255: aws package fails to build with master

[GHC]

#13255: aws package fails to build with master
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        Reporter:  bgamari           |                Owner:  bgamari
            Type:  bug               |               Status:  new
        Priority:  highest           |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash or panic                     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by simonpj):

 How do I reproduce this?  I get
 {{{
 cabal install --with-ghc=/home/simonpj/5builds/HEAD-4/inplace/bin/ghc-
 stage2
 Resolving dependencies...
 cabal: Could not resolve dependencies:
 trying: base-4.10.0.0/installed-4.1... (dependency of aws-0.15)
 next goal: vector (dependency of aws-0.15)
 rejecting: vector-0.12.0.0 (conflict: base==4.10.0.0/installed-4.1...,
 vector
 => base>=4.5 && <4.10)
 rejecting: vector-0.11.0.0 (conflict: base==4.10.0.0/installed-4.1...,
 vector
 => base>=4.3 && <4.10)
 trying: vector-0.10.12.3
 next goal: primitive (dependency of vector-0.10.12.3)
 rejecting: primitive-0.6.2.0 (conflict: vector => primitive>=0.5.0.1 &&
 <0.6.2)
 rejecting: primitive-0.6.1.0 (conflict: base==4.10.0.0/installed-4.1...,
 primitive => base>=4.3 && <4.10)
 rejecting: primitive-0.5.4.0 (conflict: base==4.10.0.0/installed-4.1...,
 primitive => base>=4.3 && <4.9)
 rejecting: primitive-0.5.3.0, primitive-0.5.2.1 (conflict:
 base==4.10.0.0/installed-4.1..., primitive => base>=4.3 && <4.8)
 rejecting: primitive-0.5.1.0 (conflict: base==4.10.0.0/installed-4.1...,
 primitive => base>=4 && <4.8)
 rejecting: primitive-0.5.0.1 (conflict: base==4.10.0.0/installed-4.1...,
 primitive => base>=4 && <4.7)
 rejecting: primitive-0.5, primitive-0.4.1, primitive-0.4.0.1,
 primitive-0.4,
 primitive-0.3.1, primitive-0.3, primitive-0.2.1, primitive-0.2,
 primitive-0.1
 (conflict: vector => primitive>=0.5.0.1 && <0.6.2)
 rejecting: primitive-0.6 (conflict: base==4.10.0.0/installed-4.1...,
 primitive
 => base>=4.3 && <4.9)
 Dependency tree exhaustively searched.
 simonpj at cam-05-unx:~/tmp/aws-0.15$
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13255#comment:2>
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