#5890: Illegal instance declaration for `Show Doc'
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Reporter: mcandre | Owner:
Type: bug | Status: new
Priority: normal | Component: Template Haskell
Version: 7.4.1 | Keywords:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: None/Unknown | Testcase:
Blockedby: | Blocking:
Related: |
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I can't install hmatrix-syntax because template-haskell has errors.
{{{
$ cabal install hmatrix-syntax
Resolving dependencies...
Downloading template-haskell-2.7.0.0...
Configuring template-haskell-2.7.0.0...
Preprocessing library template-haskell-2.7.0.0...
Building template-haskell-2.7.0.0...
[1 of 7] Compiling Language.Haskell.TH.Syntax.Internals (
Language/Haskell/TH/Syntax/Internals.hs,
dist/build/Language/Haskell/TH/Syntax/Internals.o )
[2 of 7] Compiling Language.Haskell.TH.Syntax (
Language/Haskell/TH/Syntax.hs, dist/build/Language/Haskell/TH/Syntax.o )
[3 of 7] Compiling Language.Haskell.TH.PprLib (
Language/Haskell/TH/PprLib.hs, dist/build/Language/Haskell/TH/PprLib.o )
Language/Haskell/TH/PprLib.hs:55:10:
Illegal instance declaration for `Show Doc'
(All instance types must be of the form (T t1 ... tn)
where T is not a synonym.
Use -XTypeSynonymInstances if you want to disable this.)
In the instance declaration for `Show Doc'
cabal: Error: some packages failed to install:
haskell-src-meta-0.5.1 depends on template-haskell-2.7.0.0 which failed to
install.
hmatrix-syntax-0.1 depends on template-haskell-2.7.0.0 which failed to
install.
template-haskell-2.7.0.0 failed during the building phase. The exception
was:
ExitFailure 1
th-lift-0.5.5 depends on template-haskell-2.7.0.0 which failed to install.
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5890>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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