CODEWITHSUNDEEP
macoshaskellcabal
mb14
mb14

Reputation: 22616

Can't install diagrams/arithmoi on Mac

I'm trying to install diagrams (in a cabal sandbox) and it fails during arithmoi installation, giving the following message :

Preprocessing library arithmoi-0.4.1.1...

no location info>:
    Warning: Couldn't figure out LLVM version!
         Make sure you have installed LLVM
ghc: could not execute: opt
Failed to install arithmoi-0.4.1.1
cabal: Error: some packages failed to install:
arithmoi-0.4.1.1 failed during the building phase. The exception was:
ExitFailure 1
diagrams-1.2 depends on arithmoi-0.4.1.1 which failed to install.
diagrams-contrib-1.1.2 depends on arithmoi-0.4.1.1 which failed to install.

I'm not sure why I don't have LLVM backend installed or why It could execute opt. Any idea ? (I'm using GHC 7.6.3 on OS 10.8)

Upvotes: 13

Views: 1094

Answers (3)

谷口昂平
谷口昂平

Reputation: 268

cabal install diagrams --constraint "arithmoi -llvm"

There is a way without specifying the range of version. This worked for me.

Upvotes: 9

mb14
mb14

Reputation: 22616

(own answer: I case someone has the same problem) I solved it by downgrading arithmoi to 4.0.4 by adding the following line in may cabal file :

build-depend: arithmoi >= 0.4 < 0.4.1.1

Had to delete the sandbox and reinstall everything from scratch but worked at the end.

Upvotes: 2

tempestadept
tempestadept

Reputation: 835

You can build arithmoi without LLVM by using cabal install arithmoi -f -llvm.

Upvotes: 12

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