Re: [RFC] Version numbers outside of releases

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On Thu, Jun 01, 2017 at 02:05:04PM +0200, Andrea Bolognani wrote:
> On Thu, 2017-06-01 at 12:21 +0100, Daniel P. Berrange wrote:
> > This is not that attractive from POV the language bindings.
> > 
> > eg in the Go code, I need to make usage of the new APIs
> > conditional at compile time. For example for the new APIs
> > added in 3.4.0 I have code like
> > 
> >   func (v *Stream) RecvFlags(p []byte, flags StreamRecvFlagsValues) (int, error) {
> >         if C.LIBVIR_VERSION_NUMBER < 3004000 {
> >                 return 0, GetNotImplementedError("virStreamRecvFlags")
> >         }
> > 
> >         n := C.virStreamRecvFlagsCompat(v.ptr, (*C.char)(unsafe.Pointer(&p[0])), C.size_t(len(p)), C.uint(flags))
> > 
> >         ...snip...
> >   }
> > 
> > and 
> > 
> >   int virStreamRecvFlagsCompat(virStreamPtr st,
> >                                char *data,
> >                                size_t nbytes,
> >                                unsigned int flags)
> >   {
> >   #if LIBVIR_VERSION_NUMBER < 3004000
> >       assert(0); // Caller should have checked version
> >   #else
> >       return virStreamRecvFlags(st, data, nbytes, flags);
> >   #endif
> >   }
> > 
> > The suggested versioning scheme would require changing all these version
> > numbers checks to 3003090 is rather unpleasant IMHO.
> 
> Well, that shouldn't be needed for released versions of the
> bindings as they would of course depend on a released version
> of libvirt, but I see how it would make it more difficult
> than necessary to develop the bindings in parallel to the new
> libvirt version.
> 
> So I guess disregard my proposal :)

We should none the less fix 'make rpm' to use the best practice release
numbering scheme for pre-releases

Regards,
Daniel
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