Re: [HEADSUP] Let's start a Cygwin 1.7 release area

[Corinna Vinschen <corinna-cygwin at cygwin dot com>]

On Apr 22 18:00, Corinna Vinschen wrote:
> 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:
> > [...]
> > 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.

Now I did.  I installed the 1.7 release first, a few days ago, into
C:\cygwin.  My first step installing 1.5 was to rename C:\cygwin to
C:\somethingelse.  Then I removed the registry keys
"HKCU\Software\Cygnus Solutions" and "HKLM\SOFTWARE\Cygnus Solutions"
and installed 1.5 into a directory called C:\cygwin-1.5.  Finally I
renamed C:\somethingelse back to  C:\cygwin.

I'm just running a 1.5 and a 1.7 shell concurrently and both are alive
and healthy.  None of them know from each other, they have separate
process lists, separate /proc dirs, separate everything.

Just this note: Don't mix processes started from the 1.5 and 1.7
installations within the same shell.  Keep 1.5 and 1.7 process trees
separate.  You have been warned.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat