CODEWITHSUNDEEP
windowshaskellcabal
Doug McClean
Doug McClean

Reputation: 14485

Strange errors building the data-default package

I'm getting a number of strange error messages while trying to cabal install data-default. The same basic phenomenon happens for that package even in a fresh sandbox. I can install other packages with no problem.

The error messages are of the following form, but occur for each of the 4 data-default-instances- packages:

[1 of 1] Compiling Data.Default.Instances.OldLocale ( Data\Default\Instances\OldLocale.hs, dist\dist-sandbox-6a114df1\build\Data\Default\Instances\OldLocale.o ) C:\Program Files (x86)\MinGHC-7.10.1\ghc-7.10.1\mingw\bin\ar.exe: dist/dist-sandbox-6a114df1\build\libHSdata-default-instances-old-locale-0.0.1-6jcjjaR25tK4x3nJhHHjFM.a-8696\libHSdata-default-instances-old-locale-0.0.1-6jcjjaR25tK4x3nJhHHjFM.a: No such file or directory

Any idea what's going on?

Output from ghc-pkg check

C:\Users\Doug\Documents\GitHub\bird-brain [estimator]> ghc-pkg check
WARNING: cache is out of date: C:/Program Files (x86)/MinGHC-7.10.1/ghc-7.10.1\lib\package.conf.d\pa
ckage.cache
ghc will see an old view of this package db. Use 'ghc-pkg recache' to fix.
Warning: haddock-interfaces: C:\Users\Doug\AppData\Roaming\cabal\doc\i386-windows-ghc-7.10.1\QuickCh
eck-2.8\html\QuickCheck.haddock doesn't exist or isn't a file
Warning: haddock-html: C:\Users\Doug\AppData\Roaming\cabal\doc\i386-windows-ghc-7.10.1\QuickCheck-2.
8\html doesn't exist or isn't a directory
Warning: haddock-interfaces: C:\Users\Doug\AppData\Roaming\cabal\doc\i386-windows-ghc-7.10.1\tf-rand
om-0.5\html\tf-random.haddock doesn't exist or isn't a file
Warning: haddock-html: C:\Users\Doug\AppData\Roaming\cabal\doc\i386-windows-ghc-7.10.1\tf-random-0.5
\html doesn't exist or isn't a directory
Warning: haddock-interfaces: C:\Users\Doug\AppData\Roaming\cabal\doc\i386-windows-ghc-7.10.1\random-
1.1\html\random.haddock doesn't exist or isn't a file
Warning: haddock-html: C:\Users\Doug\AppData\Roaming\cabal\doc\i386-windows-ghc-7.10.1\random-1.1\ht
ml doesn't exist or isn't a directory
Warning: haddock-interfaces: C:\Users\Doug\AppData\Roaming\cabal\doc\i386-windows-ghc-7.10.1\primiti
ve-0.5.4.0\html\primitive.haddock doesn't exist or isn't a file
Warning: haddock-html: C:\Users\Doug\AppData\Roaming\cabal\doc\i386-windows-ghc-7.10.1\primitive-0.5
.4.0\html doesn't exist or isn't a directory
Warning: haddock-interfaces: C:\Users\Doug\AppData\Roaming\cabal\doc\i386-windows-ghc-7.10.1\mtl-2.2
.1\html\mtl.haddock doesn't exist or isn't a file
Warning: haddock-html: C:\Users\Doug\AppData\Roaming\cabal\doc\i386-windows-ghc-7.10.1\mtl-2.2.1\htm
l doesn't exist or isn't a directory

Upvotes: 2

Views: 123

Answers (1)

Doug McClean
Doug McClean

Reputation: 14485

Using the strategy at https://github.com/haskell/cabal/issues/2502 it is possible to fix this problem, which ultimately has to do with the Windows limit on overall path length.

Using stack is another solution, probably one to try first, because it internally uses a folder that is likely to be close enough to the root for the path to work.

Upvotes: 1

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