[phobos] Update on Importing Packages [Was Re: install targets]

[Daniel Murphy]

Ok.  It's on the list and hopefully have time to work on it in a couple of
weeks.


On Mon, Jun 3, 2013 at 2:45 AM, Jonathan M Davis <jmdavisProg at gmx.com>wrote:

> On Monday, June 03, 2013 02:38:33 Daniel Murphy wrote:
> > IIRC this is the "import blah;" vs "import blah : *" that we discussed at
> > the conference.
>
> It's not. It works just fine when importing something like std.datetime.all
> which publicly imports the package, but with your changes, the public
> imports
> in package.d don't allow std.datetime.DosFileTime to work, unlike with
> std.datetime.all. To quote my comment in the pull request:
>
> -----------------
> I don't think that this is a problem with the proposal that this is trying
> to
> implement. I think that the problem is in the implementation. Note that
> using
> a public selective import didn't work either, and both aliasing and
> selective
> importing std.datetime.common.DosFileTime in std.datetime.package should
> have
> worked, even if simply publicly importing std.datetime.common didn't.
> Also, if
> I create three modules like so:
>
> a.d
>
> int i = 7;
> b.d
>
> public import a;
> c.d
>
> import std.stdio;
> import b;
>
> void main()
> {
>     writeln(b.i);
> }
> the code compiles and prints 7. Module c is able to use b.i as if i were
> in b
> when in fact it's in a. So, the public importing itself does what we want
> for
> this proposal.
>
> I don't think that there's necessarily anything wrong with the proposal
> that
> this pull request is trying to implement. It would work if you were trying
> to
> import std.datetime.all. and then use std.datetime.all.DosFileTime. I think
> that the problem has to be in how the implementation translates
> std.datetime.package into std.datetime. Clearly, specifying the full import
> path doesn't work with it even though it works with public imports
> normally.
> -----------------
>
> > I can't remember what our resolution for that is, so I'll
> > have another go when I do.  And when I'm done with DAC.  And I finish
> > exams.  And I finish the DMD -> D port. etc  Haven't given up, just no
> time.
>
> Well, life happens. I'm plenty busy as well. I just figured that I'd ask,
> since
> you never responded to my comment in the pull request, and I wasn't sure
> whether you'd read it or not.
>
> - Jonathan M Davis
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