[Haskell-beginners] Cabal reset/restart

[Gregory Guthrie]

I did a complete reset and restart of Haskell & Cabal, and trying to re-install my former packages on a new clean system, most went easily but there are already a number which would not install. (Deleted .ghc, .cabal, and .sandbox; reinstalled Platform).



1) "ghc-pkg check" indicates a lot of issues (although most seemed to be warnings about missing .hi or haddock html files).



Many seem to be related to looking for older versions, e.g. it complains that:

  There are problems in package Win32-2.2.2.0:

  Warning: library-dirs: E:\Plang\Haskell Platform\lib\Win32-2.2.2.0 doesn't exist or isn't a directory

  Warning: include-dirs: E:\Plang\Haskell Platform\lib\Win32-2.2.2.0\include doesn't exist or isn't a directory

  import-dirs: E:\Plang\Haskell Platform\lib\Win32-2.2.2.0 doesn't exist or isn't a directory

  cannot find any of ["libHSWin32-2.2.2.0.a","libHSWin32-2.2.2.0.p_a","libHSWin32-2.2.2.0-ghc7.8.3.so","libHSWin32-2.2.2.0- ghc7.8.3.dylib","HSWin32-2.2.2.0-ghc7.8.3.dll"] on library path



And indeed it is not there, but Win32-2.3.0.2 is present, and similarly for most all others that I see.

So why are these being reported as problems, and what to do?



2) cabal install of several of my previous packages fails; is there just some intrinsic incompatibility of these packages, or some other error?



An example:

    C:\Users\myUser\.cabal-sandbox>cabal install cgi

    Resolving dependencies...

    In order, the following would be installed:

    exceptions-0.6.1 (reinstall) changes: mtl-2.1.3.1 -> 2.2.1,

    transformers-0.3.0.0 -> 0.4.2.0

    network-2.6.0.2 (new version)

    cgi-3001.2.2.0 (new version)

    cabal: The following packages are likely to be broken by the reinstalls:

    temporary-1.2.0.3

    ghc-mod-5.2.1.2

    either-4.3.3

    monad-journal-0.7

    Use --force-reinstalls if you want to install anyway.



3) ghc-pkg check indicates a lot of broken packages for a new installation, Although all those that I checked of these are from old versioning as above, and there really is a good and more current version installed:



The following packages are broken, either because they have a problem listed above, or because they depend on a broken package.

Win32-2.2.2.0

time-1.4

template-haskell-2.7.0.0

regex-base-0.93.2

process-1.1.0.1

pretty-1.1.1.0

parsec-3.1.3

old-time-1.1.0.0

old-locale-1.0.0.4

integer-gmp-0.4.0.0

HTTP-4000.2.5

hpc-0.5.1.1

hoopl-3.8.7.3

haskell98-2.0.0.1

haskell2010-1.1.0.1

haskell-platform-2012.4.0.0

ghc-prim-0.2.0.0

ghc-7.4.2

filepath-1.3.0.0

fgl-5.4.2.4

extensible-exceptions-0.1.1.4

directory-1.1.0.2

deepseq-1.3.0.0

containers-0.4.2.1

cgi-3001.1.7.4

Cabal-1.14.0

bytestring-0.9.2.1

binary-0.5.1.0

base-4.5.1.0

array-0.4.0.0

zlib-0.5.4.0

xhtml-3000.2.1

vector-0.10.0.1

transformers-0.3.0.0

text-0.11.2.3

syb-0.3.7

stm-2.4

split-0.2.1.1

regex-posix-0.95.2

regex-posix-0.95.2

regex-compat-0.95.1

regex-compat-0.95.1

random-1.0.1.1

QuickCheck-2.5.1.1

primitive-0.5.0.1

parallel-3.2.0.3

OpenGL-2.2.3.1

network-2.3.1.0

HUnit-1.2.5.1

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