Re: py-gobject3, meson, and python versioning

[Patrick Welche <prlw1%cam.ac.uk@localhost>]

On Mon, Sep 30, 2019 at 08:08:18AM +0000, maya%NetBSD.org@localhost wrote:
> On Sun, Sep 29, 2019 at 12:58:03PM +0000, nia wrote:
> > I should add that something needs to be done right now. This is causing
> > scan failures and means a number of important packages (e.g. mate) can't
> > build.
> > 
> > On Sun, Sep 29, 2019 at 10:41:36AM +0000, nia wrote:
> > > The latest py-gobject3 update broke the py27 version and a bunch of
> > > dependent packages. This is because it now needs meson and pkgsrc can't
> > > invoke meson when python2 is in use by the package - it's python3 only.
> > > 
> > > Non-pkgsrc projects can still successfully build the py27 version of
> > > py-gobject3 by invoking a python3-using meson with
> > > -Dpython=${PREFIX}/bin/python2. 
> > > 
> > > This seems like a problem with how meson is used in pkgsrc. It should
> > > be treated like a tool rather than a normal python module, probably
> > > not be version prefixed, and not set PYTHON_VERSIONS_INCOMPATIBLE for
> > > packages using it.
> > > 
> > > Basically, meson's use of python3 shouldn't be affecting packages using
> > > it as a build system.
> > > 
> > > Alternatively: we keep the pre-meson py-gobject3, or we delete all the
> > > Python 2 packages using py-gobject3.
> 
> Let's revert the two broken commits for the pkgsrc freeze (nothing too
> critical in the updates, and it buys us time).
> 
> As I understand, that's:
> http://mail-index.netbsd.org/pkgsrc-changes/2019/09/26/msg198046.html
> http://mail-index.netbsd.org/pkgsrc-changes/2019/09/22/msg197947.html
> 
> Also pinging prlw1 in case that helps.

I'm all for reverting 

  http://mail-index.netbsd.org/pkgsrc-changes/2019/09/26/msg198046.html

which would effectively allow python 2.7 via a mistake.

I only "fixed" that after seeing:

http://www.ki.nu/pkgsrc/reports/current/NetBSD-9.0_BETA/20190925.2337/py27-gobject3-3.34.0/checksum.log

  => Bootstrap dependency digest>=20010302: NOT found
  => Verifying /nonexistent for ../../pkgtools/digest
  make[1]: don't know how to make /nonexistent. Stop

  make[1]: stopped in /amd/pkgsrc/CHROOT/P/pkgsrc/pkgtools/digest
  *** Error code 2

  Stop.
  make: stopped in /amd/pkgsrc/CHROOT/P/pkgsrc/devel/py-gobject3

which I don't understand, and took the view that py27-gobject3 shouldn't
be being built anyway.

Any idea on the source of that error?


Cheers,

Patrick