I use a shell script. It's really useful, surely there's some
official way to do this?
#!/bin/zsh
package=$1
if ! ghc-pkg describe $package >/dev/null; then
echo no such package: $package
exit 1
fi
ghcdir=$(ghc --print-libdir)
function field() {
ghc-pkg field $package $1 | cut -d' ' -f2-
return $?
}
libdir=$(field library-dirs)
hidir=$(field import-dirs)
html=$(dirname $(field haddock-html))
echo rm -rf $libdir $hidir $html
echo -n 'remove? '
read response
if [[ $response = y ]]; then
# ghc-pkg unregister will complain if this will break other packages
if ! ghc-pkg unregister $package; then
exit 1
fi
rm -rf $libdir $hidir $html
fi
On Wed, Jan 21, 2015 at 11:36 PM, Volker Wysk <vertei...@volker-wysk.de> wrote:
> Hi!
>
> I have installed/registered a new version of a package with cabal by accident.
> How can I remove it again?
>
> There is something in ~/.cabal/packages/hackage.haskell.org, but the defective
> version isn't included.
>
> bye
> V.W.
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> Glasgow-haskell-users mailing list
> Glasgow-haskell-users@haskell.org
> http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
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