Code etc., related to "Modern OCaml Development Setup"

brew-install-opam.txt

$ brew install opam
==> Installing dependencies for opam: ocaml, ocamlbuild, camlp4, gringo
==> Installing opam dependency: ocaml
==> Downloading https://homebrew.bintray.com/bottles/ocaml-4.03.0.yosemite.bottle.tar.gz
######################################################################## 100.0%
==> Pouring ocaml-4.03.0.yosemite.bottle.tar.gz
🍺  /usr/local/Cellar/ocaml/4.03.0: 1,641 files, 173.7M
==> Installing opam dependency: ocamlbuild
==> Downloading https://homebrew.bintray.com/bottles/ocamlbuild-0.9.2.yosemite.bottle.tar.gz
######################################################################## 100.0%
==> Pouring ocamlbuild-0.9.2.yosemite.bottle.tar.gz
🍺  /usr/local/Cellar/ocamlbuild/0.9.2: 26 files, 6.6M
==> Installing opam dependency: camlp4
==> Downloading https://homebrew.bintray.com/bottles/camlp4-4.03+1.yosemite.bottle.tar.gz
######################################################################## 100.0%
==> Pouring camlp4-4.03+1.yosemite.bottle.tar.gz
🍺  /usr/local/Cellar/camlp4/4.03+1: 164 files, 142.2M
==> Installing opam dependency: gringo
==> Downloading https://homebrew.bintray.com/bottles/gringo-4.5.3.yosemite.bottle.tar.gz
######################################################################## 100.0%
==> Pouring gringo-4.5.3.yosemite.bottle.tar.gz
🍺  /usr/local/Cellar/gringo/4.5.3: 7 files, 5.7M
==> Installing opam
==> Downloading https://homebrew.bintray.com/bottles/opam-1.2.2_2.yosemite.bottle.tar.gz
######################################################################## 100.0%
==> Pouring opam-1.2.2_2.yosemite.bottle.tar.gz
==> Caveats
OPAM uses ~/.opam by default for its package database, so you need to
initialize it first by running (as a normal user):

$  opam init

Run the following to initialize your environment variables:

$  eval `opam config env`

To export the needed variables every time, add them to your dotfiles.
  * On Bash, add them to `~/.bash_profile`.
  * On Zsh, add them to `~/.zprofile` or `~/.zshrc` instead.

Documentation and tutorials are available at https://opam.ocaml.org, or
via "man opam" and "opam --help".

Bash completion has been installed to:
  /usr/local/etc/bash_completion.d

zsh completion has been installed to:
  /usr/local/share/zsh/site-functions
==> Summary
🍺  /usr/local/Cellar/opam/1.2.2_2: 30 files, 14.9M

opam-init.txt

$ opam init
Checking for available remotes: rsync and local, git, mercurial, darcs. Perfect!

=-=- Fetching repository information =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=  🐫
[default] synchronized from https://opam.ocaml.org

=-=- Gathering sources =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=  🐫

=-=- Processing actions -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=  🐫
∗  installed base-bigarray.base
∗  installed base-threads.base
∗  installed base-unix.base
Done.

In normal operation, OPAM only alters files within ~/.opam.

During this initialisation, you can allow OPAM to add information to two
other files for best results. You can also make these additions manually
if you wish.

If you agree, OPAM will modify:

  - ~/.zshrc (or a file you specify) to set the right environment
    variables and to load the auto-completion scripts for your shell (zsh)
    on startup. Specifically, it checks for and appends the following line:

    . /Users/pgowda/.opam/opam-init/init.zsh > /dev/null 2> /dev/null || true


  - ~/.ocamlinit to ensure that non-system installations of `ocamlfind`
    (i.e. those installed by OPAM) will work correctly when running the
    OCaml toplevel. It does this by adding $OCAML_TOPLEVEL_PATH to the list
    of include directories.

If you choose to not configure your system now, you can either configure
OPAM manually (instructions will be displayed) or launch the automatic setup
later by running:

   opam config setup -a


Do you want OPAM to modify ~/.zshrc and ~/.ocamlinit?
(default is 'no', use 'f' to name a file other than ~/.zshrc)
    [N/y/f] Y

User configuration:
  ~/.ocamlinit is already up-to-date.
  ~/.zshrc is already up-to-date.
Global configuration:
  Updating ~/.opam/opam-init/init.sh
  Updating ~/.opam/opam-init/init.zsh
  Updating ~/.opam/opam-init/init.csh
  Updating ~/.opam/opam-init/init.fish
# To setup the new switch in the current shell, you need to run:
eval `opam config env`