How To Install Haskell on MacOS

HaskellOnMacOS.md

How To Install Haskell on MacOS

Install Homebrew

First lets check if we have the xcode developers tools with:

$ xcode-select -p

If the command above dont give you a path then you should do:

$ xcode-select --install

After installing developers tools you can finally install the Homebrew with:

$ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

Install GHC (Haskell compiler)

Let's install GHC with Homebrew using the following command:

$ brew install ghc

Now we can verify if it was installed with:

$ ghci                                                      
GHCi, version 8.10.1: https://www.haskell.org/ghc/  :? for help
Loaded package environment from /Users/frederick/.ghc/x86_64-darwin-8.10.1/environments/default
Prelude> :q
Leaving GHCi.

At the moment we have installed the compiler but we should install Cabal to allow us to download all dependencies for our codes, this can be done with:

$ brew install cabal-install
$ cabal update

Let's install one dependency: Numbers

$ cabal install numbers
$ cabal install --lib numbers

That's all folks, now we have installed Haskell, enjoy it and code carefully!

Optional: Install VS Code Extensions

In order to use Haskell on VS Code, I personally installed the following extensions:

1. Haskell
2. Haskell Syntax Highlighting
3. haskell-linter

Hope you find this Gist useful!
Thank you for read it!