Re: py-build dependency circular dependency

[Leonardo Taccari <leot%NetBSD.org@localhost>]

Hello Niclas,

Niclas Rosenvik writes:
> On Tue, 26 Jul 2022 01:33:26 +0200
> Leonardo Taccari <leot%NetBSD.org@localhost> wrote:
>
> > Hello folks,
> > When updating py-typing-extensions to latest version I had missed a
> > new circular dependency in Python 3.7 introduced probably both by
> > switch to wheel.mk and py-flit_core tool dependency, i.e.:
> > 
> >  py-build -> py-importlib-metadata -> py-typing-extensions -> py-build
> > 
> > 
> > Any idea how to possibly address that?
> > Thank you!
>
> py-typing-extensions are possible to install on any platform without
> building, deps leading up to py-build must be installed this way or
> built someway without py-build.
>
> wheel.mk supports downloading pre-built platform independent packages
> by doing the following:
>
> set MASTER_SITES to ${MASTER_SITE_WHEEL:=packagename/}
> set NO_BUILD to yes
> the compatible python versions controls the py2py3 parts (compatability
> tags) of the filename being downloaded so in your case set
> PYTHON_VERSIONS_INCOMPATIBLE to 27, typing-extensions only has py3 in
> the filename.
>
> see testproc/py-tomli/Makefile for an example of the above.
>
> I should document the above procedure better in wheel.mk .
> [...]

That was very useful and I have just adjusted py-typing-extensions in
that way and now we should hopefully get rid of that circular
dependency!


Thank you very much Niclas and sorry for the breakage!