parconc build fails on mac #30
Description
I'm currently looking to run the ping.hs program example under the distrib-ping directory and to that end im trying to build the executables with cabal.
on building parconc as directed in the book by the following (as stated on the book)
The sample code is collected together in the package parconc-examples on Hackage.
To download and unpack it, run:
$ cabal unpack parconc-examples
Then, install the dependent packages:
$ cd parconc-examples
$ cabal install --only-dependencies
Next, build all the sample programs:
$ cabal build
The parconc-examples package will be updated as necessary to follow future changes
in the Haskell Platform or other APIs.
I have downloaded stack from the official site
and cable from here
on building I get the following error
sanjitkumar@Sanjits-MacBook-Air parconc-examples-0.4.8 % cabal install --only-dependencies
cabal: Could not resolve dependencies:
[__0] trying: parconc-examples-0.4.8 (user goal)
[__1] next goal: base (dependency of parconc-examples)
[__1] rejecting: base-4.14.1.0/installed-4.14.1.0 (conflict: parconc-examples
=> base>=4.5 && <4.14)
[__1] skipping: base-4.15.0.0, base-4.14.1.0, base-4.14.0.0 (has the same
characteristics that caused the previous version to fail: excluded by
constraint '>=4.5 && <4.14' from 'parconc-examples')
[__1] rejecting: base-4.13.0.0, base-4.12.0.0, base-4.11.1.0, base-4.11.0.0,
base-4.10.1.0, base-4.10.0.0, base-4.9.1.0, base-4.9.0.0, base-4.8.2.0,
base-4.8.1.0, base-4.8.0.0, base-4.7.0.2, base-4.7.0.1, base-4.7.0.0,
base-4.6.0.1, base-4.6.0.0, base-4.5.1.0, base-4.5.0.0, base-4.4.1.0,
base-4.4.0.0, base-4.3.1.0, base-4.3.0.0, base-4.2.0.2, base-4.2.0.1,
base-4.2.0.0, base-4.1.0.0, base-4.0.0.0, base-3.0.3.2, base-3.0.3.1
(constraint from non-upgradeable package requires installed instance)
[__1] fail (backjumping, conflict set: base, parconc-examples)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: base, parconc-examples