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====== Opam ======
OPAM is a source-based package manager for OCaml. It supports multiple simultaneous compiler installations, flexible package constraints, and a Git-friendly development workflow.

==== v1.2.0 ====
  * Version: 1.2.0
  * Added: November, 2014
  * Link: https://opam.ocaml.org/

=== Usage ===
  * Show all available versions of opam<code>module avail opam</code>
  * Load opam module: <code>module load opam/1.2.0</code>
  * get quick help:<code>man opam</code>


=== Installation ===
  * Clone opam git repo, compile & install it to /export/apps/<code>
git clone https://github.com/ocaml/opam.git
cd opam
sudo mkdir -p /export/apps/opam/1.2.0/
sudo chown -R joguya:joguya /export/apps/opam/1.2.0/
git checkout rebuild
./configure --prefix=/export/apps/opam/1.2.0/
make lib-ext
make
make install
sudo chown -R root:root /export/apps/opam/1.2.0/</code>
  * opam module file<code>#%Module1.0
#####################################################################
##
## Opam Modulefile
## By James Oguya, j.oguya@cgiar.org
## November, 2014
##

set appname         opam
set version         1.2.0
set prefix          /export/apps/${appname}/${version}
set exec_prefix     ${prefix}/bin
set url "https://opam.ocaml.org/"
set msg "OPAM is a source-based package manager for OCaml. It supports multiple simultaneous compiler installations, flexible package constraints, and a Git-friendly development workflow.\nOpam Official Site: $url\n"

module-whatis $msg

proc ModulesHelp { } {
    puts stderr "$msg"
}

conflict        opam

prepend-path    PATH    ${exec_prefix}

# opam depends on ocaml module
if { ![is-loaded ocaml] } {
    module load ocaml
}</code>
  * deploy the new module using ansible<code>ansible-playbook site.yml -u joguya -K -s --limit=compute --tags=module</code>