Avoid collisions between parallel installations of Cygwin

Charles Wilson cygwin@cwilson.fastmail.fm
Thu Oct 15 16:37:00 GMT 2009


cgf wrote:
> On Thu, Oct 15, 2009 at 06:17:33PM +0200, Corinna Vinschen wrote:
>>On Oct 15 16:03, Earnie Boyd wrote:
>>> Quoting Corinna Vinschen <corinna-cygwin@cygwin.com>:
>>>
>>>>
>>>> Does it hurt?  No.  There's only one such entry per installation path.
>>>> Your thumb drive, typically using the same drive letter every time
>>>> it's used on a machine, will result in one entry.
>>>>
>>>
>>> Too bad.  Really I want to leave zero dust when the thumb drive is removed.
>>
>>No way, right now, given the "Program Options".  I think the trade-off
>>of adding a single entry to the registry to know a path were a DLL has
>>been installed once is worth its money if it helps to track down
>>potential problems in the long run.  It's just one grain of dust in the
>>big picture ;)
> 
> As Chuck said, this is an argument for being able to tune the DLL itself
> via the resource section or whereever.  But I don't think it's something
> that must go in 1.7.1.

Certainly not. We might think about addressing all of the registry
'grains' at once, later on (but I believe 'Program Options' are treated
specially by windows itself; there may not be anything we can do to
achieve the current behavior seen with a non-empty Program Options key
[*], /without/ actually using Program Options).

[*] on my system, the Program Options key is empty for all of my various
cygwin installations, both in HKCU and HKLM

But that's something to worry about for 1.7.large_number.

--
Chuck



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