update installation for OCaml

diff --git a/how_to_get_the_programming_languages_running_on_your_computer.mdwn b/how_to_get_the_programming_languages_running_on_your_computer.mdwn
index 848bd52..6fab52a 100644 (file)
--- a/how_to_get_the_programming_languages_running_on_your_computer.mdwn
+++ b/how_to_get_the_programming_languages_running_on_your_computer.mdwn
@@ -310,7 +310,7 @@ The current version of OCaml is 4.02.1 (released October 2014).
     You can install the current version of OCaml (4.02.1, from October 2014),
     together with the Findlib add-on and OPAM package manager, by opening a Terminal and typing:
 
     You can install the current version of OCaml (4.02.1, from October 2014),
     together with the Findlib add-on and OPAM package manager, by opening a Terminal and typing:
 

-        sudo port install ocaml caml-findlib opam
+        sudo port install ocaml ocaml-findlib opam

 
     As with Scheme, it's helpful to also have rlwrap installed, and to start OCaml as `rlwrap ocaml`. This gives
     you a nice history of the commands you've already typed, which you can scroll up and down in with your
 
     As with Scheme, it's helpful to also have rlwrap installed, and to start OCaml as `rlwrap ocaml`. This gives
     you a nice history of the commands you've already typed, which you can scroll up and down in with your


@@ -321,10 +321,18 @@ The current version of OCaml is 4.02.1 (released October 2014).
     Use your packaging system, for example, open a Terminal and
     type:
 
     Use your packaging system, for example, open a Terminal and
     type:
 

-        sudo apt-get install ocaml ocaml-findlib opam
+        sudo apt-get install ocaml opam camlp4-extra ocaml-findlib

 
     That will install a version of OCaml and the Findlib add-on and OPAM package manager.
 
 
     That will install a version of OCaml and the Findlib add-on and OPAM package manager.
 

+    If you're using Ubuntu "Utopic" (14.10), there's [a note on the OPAM home page](https://github.com/ocaml/opam)
+    warning that its version of OPAM is broken, and not to use it. Here's how you can get (OCaml and) OPAM from a newer repository:
+
+        sudo apt-get install -y software-properties-common
+        sudo apt-apt-repository -y ppa:avsm/ppa
+        sudo apt-get update
+        sudo apt-get install ocaml opam
+

     If for some reason you can't get OCaml through your
     packaging system, you can go to
     <http://caml.inria.fr/download.en.html>.
     If for some reason you can't get OCaml through your
     packaging system, you can go to
     <http://caml.inria.fr/download.en.html>.