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bug#14513: Fwd: bug#14513: 24.3.50; Site load-path pieces differ in MSYS


From: Richard Copley
Subject: bug#14513: Fwd: bug#14513: 24.3.50; Site load-path pieces differ in MSYS build
Date: Thu, 30 May 2013 20:49:40 +0100

Damn damn damn. I meant to forward this message to this bug, but
instead I sent it to address@hidden. Sorry.

Eli, I didn't mean to reply by private email, and I re-sent my reply
to the list shortly afterwards, as you will have seen by now. I hope
you don't mind me forwarding your reply, which is below, with my
comments inline.

Sorry again for causing extra confusion. I've done similar things on
this list several times before. It's entirely unintentional.  The
Google mail interface makes it very easy to hit reply and slightly
annoying to hit reply-all.

---------- Forwarded message ----------
From: Richard Copley <address@hidden>
Date: 30 May 2013 20:29
Subject: Fwd: bug#14513: 24.3.50; Site load-path pieces differ in MSYS build
To: "address@hidden" <address@hidden>


On 30 May 2013 20:28, Eli Zaretskii <address@hidden> wrote:
[Why private email?]
> Date: Thu, 30 May 2013 20:14:35 +0100
> From: Richard Copley <address@hidden>
>
> > >   c:\>dir /B c:\emacs
> > >   emacs-111818
> > >   emacs-112125
> > >   emacs-112416
> > >   site-lisp
> >
> > You can still have separate directories like that, unless I'm missing
> > something.  The directory structure below emacs-NNNNNN directories
> > will be different, but that's all.
> >
>
> Also the site-lisp directory will not be on the load-path.

Your site-lisp won't, but the one in ROOT/share/emacs will.

Yes.
 

> I'm not actively using more than one build.

Then why do you need separate trees?  That's the only reason why you
need the site-lisp outside of the Emacs tree.

I don't need separate trees. I find separate trees convenient.
 
Use the Posix-standard
structure and one root for all the Emacs installations, and the
problem is gone, because you have the common site-lisp directory in
ROOT/share/emacs.

That has its own disadvantages. Are we going round in circles?
 
> > it should be easy to create a simple script that, given a root
> > directory and a version, will delete the subdirectories that belong to
> > that version only.  There aren't too many directories to delete,
> > basically libexec/emacs/VERSION and share/emacs/VERSION.  That, and
> > the emacs-VERSION*.exe executables in bin/.
> >
> > Did I miss something?
> >
>
> With the uninstallation? No idea. It's ok, there's no way I'll be doing
> that.

You mean, you will never uninstall?  Then why do you keep the versions
separate?

No that's not what I mean.

> > The new structure has advantages which I described in that mail in
> > March.
>
> (1) You're the first one I know about who thinks that's important.

Well, maybe I'm the only one who works on so many platforms.
> (2) is wrong.

It's not wrong as long as you keep all the installations under the
same root, like /usr/local on Unix.
 
That's true.

> (3) I don't follow. Other platforms, really?

Yes.  Imagine that your --prefix is on a networked volume that can be
accessed from Windows and Unix systems alike.  Then only the
architecture-dependent files (binaries) need to be separate;
everything under %emacs_dir%/share/emacs/ can be installed only once
and used by Emacs from any OS.

No, you've lost me ... Do you actually do that? Where do the binaries go?


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