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Failed to install preliminaries-0.1.0.0
Build log ( /home/builder/.cabal/logs/preliminaries-0.1.0.0.log ):
cabal: Entering directory '/tmp/cabal-tmp-6872/preliminaries-0.1.0.0'
Configuring preliminaries-0.1.0.0...
Building preliminaries-0.1.0.0...
Preprocessing library preliminaries-0.1.0.0...
[1 of 1] Compiling Preliminaries    ( source/Preliminaries.hs, dist/build/Preliminaries.o )

source/Preliminaries.hs:63:3: error:
    Conflicting exports for ‘.|’:
       ‘module Control.Parallel.Strategies’ exports ‘Control.Parallel.Strategies..|’
         imported from ‘Control.Parallel.Strategies’ at source/Preliminaries.hs:85:18-21
       ‘module ClassyPrelude.Conduit’ exports ‘ClassyPrelude.Conduit..|’
         imported from ‘ClassyPrelude.Conduit’ at source/Preliminaries.hs:88:1-28
         (and originally defined in ‘conduit-1.2.8:Data.Conduit’)
cabal: Leaving directory '/tmp/cabal-tmp-6872/preliminaries-0.1.0.0'
cabal: Error: some packages failed to install:
preliminaries-0.1.0.0 failed during the building phase. The exception was:
ExitFailure 1