3.3.0: Possible regression in cygwin DLL (Win10); fixed in snapshot

Brian Koontz brianko@gmail.com
Mon Nov 8 23:18:04 GMT 2021

Unfortunately, users don’t always have the time or chops to write wrappers for missing Cygwin packages or functionality. By its very nature, a Cygwin environment will always involve non-Cygwin components . In this case, the GCM-Core devs are actively working on a Cygwin solution and were able to pinpoint the cause.

I’m a developer too, just not a Cygwin dev. I know what it’s like being forced to work in a mixed environment. Whenever possible, I prefer Cygwin packages if they are available. Even then, the environment will always remain mixed. I wouldn’t report a bug I suspected was caused by the mixed environment. This wasn’t one of those situations.

Thanks for all the work you all do with Cygwin. My work would be exponentially more inefficient without Cygwin.


> On Nov 8, 2021, at 2:50 PM, Adam Dinwoodie <adam@dinwoodie.org> wrote:
> Cygwin Git is not inherently an appropriate wrapper to allow Cygwin
> applications to seamlessly communicate with non-Cygwin Windows
> applications. Naively mixing the two will work sometimes, but it's
> reasonable to expect problems due to, for example, the fact that a
> native Windows application and a Cygwin application will have very
> different ideas about the absolute path to a given file.
> In this case, it looks like the change of behaviour was an unintended
> side-effect of changes made to the Cygwin DLL, and the folk working on
> the DLL have found a way to get things working as expected for Brian.
> Nonetheless I agree with Achim, and in general I wouldn't expect the
> steps Brian was taking to work reliably anyway. I would expect that,
> to get things working within Cygwin's design paradigms, one would need
> to either (a) compile GCM as a Cygwin application, (b) not use Cygwin
> at all and instead swap to Git for Windows, or (c) write a shim
> application that uses native Windows APIs to talk to GCM and
> *nix-style Cygwin APIs to talk to Cygwin Git.
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