Can not install on OS X Yosemite

[miktam]

OS X Yosemite, Version 10.10.2

$ ghc --version                                          
The Glorious Glasgow Haskell Compilation System, version 7.10.1
$ ./bin/setup-koans 
Writing a default package environment file to
/Users/akarpushonak/APPS/HASKELL/HaskellKoans/cabal.sandbox.config
Using an existing sandbox located at
/Users/akarpushonak/APPS/HASKELL/HaskellKoans/.cabal-sandbox
Resolving dependencies...
cabal: Could not resolve dependencies:
trying: HaskellKoans-0.1 (user goal)
trying: base-4.8.0.0/installed-901... (dependency of HaskellKoans-0.1)
trying: testloop-0.1.1.0 (dependency of HaskellKoans-0.1)
next goal: unix (dependency of testloop-0.1.1.0)
rejecting: unix-2.7.1.0/installed-457..., 2.7.1.0, 2.7.0.1, 2.7.0.0 (conflict:
testloop => unix>=2.2.0.0 && <2.7)
rejecting: unix-2.6.0.1, 2.6.0.0 (conflict: base==4.8.0.0/installed-901...,
unix => base>=4.5 && <4.7)
rejecting: unix-2.5.1.1, 2.5.1.0 (conflict: base==4.8.0.0/installed-901...,
unix => base>=4.5 && <4.6)
rejecting: unix-2.5.0.0 (conflict: base==4.8.0.0/installed-901..., unix =>
base>=4.2 && <4.5)
rejecting: unix-2.4.2.0, 2.4.1.0 (conflict: base==4.8.0.0/installed-901...,
unix => base>=4.2 && <4.4)
rejecting: unix-2.4.0.2, 2.4.0.1 (conflict: base==4.8.0.0/installed-901...,
unix => base>=4.2 && <4.3)
rejecting: unix-2.4.0.0 (conflict: base==4.8.0.0/installed-901..., unix =>
base>=4.1 && <4.3)
rejecting: unix-2.3.2.0, 2.3.1.0, 2.3.0.0, 2.2.0.0 (conflict:
base==4.8.0.0/installed-901..., unix => base<4.3)
rejecting: unix-2.0 (conflict: testloop => unix>=2.2.0.0 && <2.7)
Dependency tree exhaustively searched.

Note: when using a sandbox, all packages are required to have consistent
dependencies. Try reinstalling/unregistering the offending packages or
recreating the sandbox.
setup-koans: [ERROR]cabal install --only-dependencies failed.

Looks similar to already merged #9

[charleskorn]

I'm seeing the same issue.

[robert-baldwin]

Same thing here. Is there a fix?

[rafaqz]

Same here on Arch linux. Seems to caused by roman/testloop#2

[rafaqz]

testloop has strict dependencies, but seems to work if you change them.

git clone https://github.com/roman/testloop.git testloop
vim testloop/testloop.cabal`

and change these dependencies:

    filepath        >= 1.3,
    mtl             >= 2.1,
    time            >= 1.4
-
    unix >= 2.2.0.0

then

cabal sandbox init
cabal install testloop
cabal install

And it works fine.

[ikle-tiskok]

same error

[gregberns]

Any updates? This is my first foray into Haskell and I can't even get the project running... (very sad face)