CS: Info: opam not initialized, running opam init
CS: Info: please follow the instructions
OPAM has already been initialized.
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:

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

    . /home/guillaume/tmp/opam.shell/opam-init/init.sh > /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 ~/.profile and ~/.ocamlinit?
(default is 'no', use 'f' to name a file other than ~/.profile)
    [N/y/f]