CODEWITHSUNDEEP
haskellcabal
Vlad K.
Vlad K.

Reputation: 320

I have trouble installing a library with cabal

What I want to install is scalpel library.

When I try:

cabal install -p scalpel

I have following output:

Microsoft Windows [Version 6.3.9600]
(c) 2013 Microsoft Corporation. All rights reserved.

C:\Users\maion_000>cabal install -p scalpel
Resolving dependencies...
In order, the following would be installed:
curl-1.3.8 +new-base (new package)
regex-base-0.93.2 (reinstall) changes: bytestring-0.10.0.2 -> 0.10.6.0,
mtl-2.1.2 -> 2.2.1
regex-tdfa-1.2.2 (new package)
tagsoup-0.13.10 (new package)
scalpel-0.3.0.1 (new package)
cabal: The following packages are likely to be broken by the reinstalls:
regex-posix-0.95.2
regex-compat-0.95.1
haskell-platform-2013.2.0.0
Use --force-reinstalls if you want to install anyway.

What should I do? I tried --force-reinstalls and it gives more errors.

Upvotes: 0

Views: 300

Answers (1)

ForestPhoenix
ForestPhoenix

Reputation: 155

Cabal can become very problematic with dependencies blocking each other.

If you can, use stack or cabal sandbox. This isolates creates isolated environments that can prevent the 'dependency hell'.

stack automaticall creates a new sandbox for each project, while cabal sandbox has to be triggered manually.

You can try to delete .cabal and maybe .ghc from your home directory to fix the current situation, but that fix will be temporary if you do not use sandboxing (which is exactly what stack or cabal sandbox do)

Upvotes: 1

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