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Re: [HEADSUP] Let's start a Cygwin 1.7 release area
- From: Corinna Vinschen <corinna-cygwin at cygwin dot com>
- To: cygwin-apps at cygwin dot com
- Date: Tue, 22 Apr 2008 18:00:52 +0200
- Subject: Re: [HEADSUP] Let's start a Cygwin 1.7 release area
- References: <1208879483.2504.1249265081@webmail.messagingengine.com>
- Reply-to: cygwin-apps at cygwin dot com
On Apr 22 11:51, Charles Wilson wrote:
> Brian Dessent wrote:
> > the DLL already supports
> > parallel installs by the fact that it uses /etc/fstab.
>
> Only in very limited cases:
>
> (1) we're talking about cygwin-1.7.x
> (2) Either
> (a) only one of those parallel instances is in use at a time,
> including installed services,
> or
> (b) all of those parallel instances have exactly the same version of
> the DLL
> (3) Even so, doing this is not officially supported (the current
> dual-installation "support" vis-a-vis cygwin-1.5.x and cygwin-1.7.x is
> (a) temporary and
> (b) intended for package maintainers only, in order to prepare the
> cygwin-1.7 packages -- and package maintainers generally know what
> they are doing and what the pitfalls of a dual/multiple installation
> are.
>
> Right? You still have to worry about the shared memory region name, and
> its format which may vary with DLL version. Plus there still might be
> other stuff that prevents parallel cygwin installs from running
> simultaneously. And I don't think supporting simultaneous use of
> multiple cygwin installations is one of our goals, is it?
In theory, the latest incarnation of the Cygwin DLL should work
in parallel with a 1.5.x DLL. In theory. I didn't actually test it.
Corinna
--
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Project Co-Leader cygwin AT cygwin DOT com
Red Hat