[Caml-list] how do you develop multiple dependent projects simultaneously?

[Caml-list] how do you develop multiple dependent projects simultaneously?

[Martin DeMello]

I have a project that depends on two other libraries, both pinned to
local git repos in opam. However I find it quite annoying to have to
run opam update && opam install every time I make a change in the
libraries, especially when I'm making small changes to all three
projects at the same time. Is there any smoother workflow that people
use?

martin

Re: [Caml-list] how do you develop multiple dependent projects simultaneously?

[Nicolás Ojeda Bär]

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Hi Martin,

Other people will be able to give you a more extensive answer, but my
understanding is that jbuilder supports this workflow directly.
So if your project and both libraries use jbuilder you can just drop both
local git repos somewhere in your tree and everything will work
automatically.

See
http://jbuilder.readthedocs.io/en/latest/project-layout-specification.html
for the details.

Best wishes,
Nicolas


On Mon, Jul 31, 2017 at 10:33 PM, Martin DeMello <martindemello@gmail.com>
wrote:

> I have a project that depends on two other libraries, both pinned to
> local git repos in opam. However I find it quite annoying to have to
> run opam update && opam install every time I make a change in the
> libraries, especially when I'm making small changes to all three
> projects at the same time. Is there any smoother workflow that people
> use?
>
> martin
>
> --
> Caml-list mailing list.  Subscription management and archives:
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Re: [Caml-list] how do you develop multiple dependent projects simultaneously?

[David Allsopp]

Martin DeMello wrote:
> I have a project that depends on two other libraries, both pinned to
> local git repos in opam. However I find it quite annoying to have to
> run opam update && opam install every time I make a change in the
> libraries, especially when I'm making small changes to all three
> projects at the same time. Is there any smoother workflow that people
> use?

This is something jbuilder handles really easily, as long as your dependent libraries also use jbuilder - all you have to do is checkout the dependent libraries in subdirectories of your project and jbuilder will build and use them instead of the opam packages. Once you're done working on the libraries, you do whatever's necessary to push your changes, update your opam package/pin and then delete the library's sub-directory and on your next build, jbuilder will automatically return to using the opam package.


David

Re: [Caml-list] how do you develop multiple dependent projects simultaneously?

[Gerd Stolpmann]

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What I usually do is that I set the OCAMLPATH variable so that ocamlfind
can find the not-yet packaged or installed version of the just compiled
library. Of course, this requires that you structure your source
repository so that this is possible, e.g. I often use

src/library-name/<folder for library incl. META>

and then OCAMLPATH=<dir>/src works (use a colon-separated path if you
have several of such locations).

Still, this means that you have to clean and rebuild often, but you are
at least skipping the installation part.

Gerd


On 31.07.17 22:33, Martin DeMello wrote:
> I have a project that depends on two other libraries, both pinned to
> local git repos in opam. However I find it quite annoying to have to
> run opam update && opam install every time I make a change in the
> libraries, especially when I'm making small changes to all three
> projects at the same time. Is there any smoother workflow that people
> use?
>
> martin
>

-- 
------------------------------------------------------------
Gerd Stolpmann, Darmstadt, Germany    gerd@gerd-stolpmann.de
My OCaml site:          http://www.camlcity.org
Contact details:        http://www.camlcity.org/contact.html
Company homepage:       http://www.gerd-stolpmann.de
------------------------------------------------------------



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Re: [Caml-list] how do you develop multiple dependent projects simultaneously?

[rixed]

-[ Mon, Jul 31, 2017 at 01:33:45PM -0700, Martin DeMello ]----
> I have a project that depends on two other libraries, both pinned to
> local git repos in opam. However I find it quite annoying to have to
> run opam update && opam install every time I make a change in the
> libraries, especially when I'm making small changes to all three
> projects at the same time. Is there any smoother workflow that people
> use?

You do not have to; "opam upgrade $name_of_the_lib" is all that should
be required.  that's how I work and it's ok, but I do not change those
lib very often anyway.