On 14 Aug 2014, at 17:02, Louis Gesbert <[email protected]> wrote:

> Yes, the option on `opam install` is still there. It differs in that it won't 
> list depexts of already installed packages (it resolves the installation 
> first, then extracts depexts).
>  
> The `--external` option on `opam list` also accepts the same tag arguments, 
> but will list everything by tags if none are given:
>  
> $ opam install -e ubuntu google-drive-ocamlfuse
> libcurl4-gnutls-dev libfuse-dev libsqlite3-dev
>  
> $ opam list -e ubuntu google-drive-ocamlfuse   
> # Known external dependencies for google-drive-ocamlfuse.0.5.3 on ubuntu
> libcurl4-gnutls-dev
>  
> $ opam list -e ubuntu --required-by google-drive-ocamlfuse --rec
> # Known external dependencies for biniou.1.0.9, camlidl.1.05, camlp4.4.01.0, 
> cppo.0.9.4, cryptokit.1.9, cryptokit-sha512.1.6.3, easy-format.1.0.2, 
> extlib.1.6.1, extlib-compat.1.6.1, gapi-ocaml.0.2.1, 
> google-drive-ocamlfuse.0.5.3, ocamlfind.1.5.1, ocamlfuse.2.7.1-cvs2, 
> ocamlnet.3.7.4, ocurl.0.7.1, sqlite3-ocaml.2.0.6, xmlm.1.2.0 and yojson.1.1.8 
> on ubuntu
> libcurl4-gnutls-dev
> libfuse-dev
> libsqlite3-dev
> zlib1g-dev

Is there any way to drop the '# Known <...>' text in the output?  That'll stop 
it from working properly in a shell script.

-anil

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