Re: [gtk-osx-users] [Gramps-devel] python version mismatch while attempting clean build.

[Ronan Waide <waider gmail com>]

On 08/01/2013 03:48 PM, John Ralls wrote:
> On Aug 1, 2013, at 12:07 AM, Ronan Waide <waider gmail com> wrote:
>
> > On 30 Jul 2013, at 17:17, Ronan Waide <waider gmail com> wrote:
> >
> > > On 07/30/2013 05:03 PM, Ronan Waide wrote:
> > > > On 07/30/2013 03:08 PM, John Ralls wrote:
> > > > > On Jul 30, 2013, at 6:39 AM, John Ralls <jralls ceridwen us> wrote:
> > > > >
> > > > > > On Jul 30, 2013, at 1:02 AM, Ronan Waide <waider gmail com> wrote:
> > > > > >
> > > > > > > Hi,
> > > > > > >
> > > > > > > running in my usual clean-build environment, the build is failing in
> > > > > > > rsvg with the following:
> > > > > > >
> > > > > > > GISCAN Rsvg-2.0.gir
> > > > > > > Traceback (most recent call last):
> > > > > > > File "/Users/waider/gtk/inst/bin/g-ir-scanner", line 44, in <module>
> > > > > > >    from giscanner.scannermain import scanner_main
> > > > > > > File
> > > > > > > "/Users/waider/gtk/inst/lib/gobject-introspection/giscanner/scannermain.py",
> > > > > > > line 29, in <module>
> > > > > > >    import tempfile
> > > > > > > File "/Users/waider/gtk/inst/lib/python2.7/tempfile.py", line 34, in
> > > > > > > <module>
> > > > > > >    from random import Random as _Random
> > > > > > > File "/Users/waider/gtk/inst/lib/python2.7/random.py", line 47, in
> > > > > > > <module>
> > > > > > >    from os import urandom as _urandom
> > > > > > > ImportError: cannot import name urandom
> > > > > > > make[2]: *** [Rsvg-2.0.gir] Error 1
> > > > > > >
> > > > > > > This is basically down to the fact that the system python is 2.7.2 and
> > > > > > > the jhbuild python is 2.7.3. jhbuild used have an option to ignore the
> > > > > > > system-provided tools, but that appears to have vanished with the recent
> > > > > > > upgrade to jhbuild 3.x; however, I've managed a clean build since that
> > > > > > > update, so something else has triggered this failure. I can investigate
> > > > > > > hacking around this (seems like the problem is the g-ir-scanner
> > > > > > > script/build rather than Rsvg) but wanted to bring it up here in case
> > > > > > > there's already a known fix.
> > > > > > Thanks for bringing it up, but this is the wrong list. Please use gtk-osx-users-list gnome org for build 
> > > > > > issues not
> > > > > > related directly to Gramps code
> > > > > I think I bumped up against this yesterday; it was just as my wife called me to dinner, so I didn't have time 
> > > > > to investigate. I suspect that a search path is getting whacked.
> > > > >
> > > > > The only option in jhbuild to ignore system-provided tools that I know about is the --ignore-system option to 
> > > > > jhbuild bootstrap, which tells jhbuild to build a program even if it's already available on the path. Was 
> > > > > there something else that I've missed?
> > > > Hi John,
> > > >
> > > > that's the option I was referring to - it seems like it's no longer available in jhbuild since you upgraded 
> > > > it:
> > > >
> > > > lumpy:gramps waider$ jhbuild bootstrap --ignore-system
> > > > Usage: jhbuild bootstrap [ options ... ] [ modules ... ]
> > > >
> > > > jhbuild: error: no such option: --ignore-system
> > > >
> > > > cheers,
> > > > Waider
> > > I edited the #! line for the installed g-ir-scanner and the build now seems to be working again (I say 'seems 
> > > to be' as it's running, and will continue to run for quite some time before I know if it worked or not!)
> > Realising this morning that this is not a sustainable hack, as the jhbuild-built python binary that I 
> > modified g-ir-scanner to use might not have been built by the time I need it :) So, I've two ideas for how 
> > this should be fixed: if the script is using /usr/bin/python, make sure that there's no element in sys.path 
> > that points to the jhbuild-built core python library directory, or (verified this overnight) use 'defaults 
> > write com.apple.versioner.python Version 2.6' to force /usr/bin/python to have a different minor version from 
> > the jhbuild-built one, which prevents this issue from happening.
> Ah! You must have set versioner.python to 2.7 at some point. The default is 2.6, even in 10.8. I've never 
> changed it on my system, which is probably why I've never seen that problem. I should have realized that from 
> your original, where you said that the system python is 2.7.2.

This makes sense, since when I looked at the Apple manpage for python, 
it indicated that 2.6 is the default. However:

c82a14542fe4:~ waider$ defaults read com.apple.versioner.python
2013-08-01 15:51:07.778 defaults[2763:707]
Domain com.apple.versioner.python does not exist
c82a14542fe4:~ waider$ python --version
Python 2.7.2
c82a14542fe4:~ waider$ defaults write com.apple.versioner.python Version 2.6
c82a14542fe4:~ waider$ defaults read com.apple.versioner.python
2013-08-01 15:51:07.778 defaults[2763:707]
{
    Version = "2.6";
}
c82a14542fe4:~ waider$ python --version
Python 2.6.7

...and just to be sure...

c82a14542fe4:~ waider$ defaults delete com.apple.versioner.python
c82a14542fe4:~ waider$ python --version
Python 2.7.2

This seems to suggest that the manual page is not accurate, and 2.7 is 
now the default.
> If you're going to build python, you should do so early, before or at the same time as 
> meta-gtk-osx-bootstrap. Otherwise you'll get some modules building their python stuff for the Apple version 
> and others building for the version you built, and much pain will ensue, as you've discovered.
>
> I reiterate my recommendation that you build all the modules you want in a single invocation of jhbuild: That 
> affords jhbuild the best opportunity to sequence the building correctly to satisfy all of the soft 
> dependencies.

Oh but I do :) my build script, cleaning of existing builds aside, 
reduces to this:

fetch gtk-osx setup script and run it
jhbuild bootstrap
jhbuild --modules gramps.modules all_the_things_including_python

I am thinking at this point I'll set this up to continuously build and 
post build errors on my website somewhere - as an RSS feed, even - to 
highlight these things when they happen.

Cheers,
Waider.

--
waider gmail com / It's about as impersonal as you can get.