If you're on Windows install development environments outside the Programs Folder which has special protections on it.
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Sent from an expensive device which will be obsolete in a few months! :D
Casey
On Fri, 30 Jan 2015 14:54:36 +0100, Gregory Guthrie <guthrie@mum.edu> wrote:
Doing a cabal update, it notes a new version of cabal -install, so trying that fails, and now it looks like cabal itself is broken (no installs work).
Any short-term \remedies, and/or long term better approaches?
A method that usually works is as follows:
md CabalInstall
cd CabalInstall
cabal sandbox init
cabal install cabal-install
Then copy CabalInstall\.cabal-sandbox\bin\cabal.exe to the location of the old cabal.exe (probably something like "C:\Program Files\Haskell Platform\2014.2.0.0\lib\extralibs\bin\"
(Maybe rename the old cabal.exe to cabal-1.20.0.4.exe (or something similar) first)
Check with
cabal --version
if the correct version of cabal.exe is run.
If you are using a sandbox, all locally installed packages are ignored, so there is less chance of dependency problems.
Regards,
Henk-Jan van Tuyl
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