12:48 p.m.
Hi,
I've made a google document, that describes the changes that come with
the patches and the rationale behind them:
https://docs.google.com/document/d/1XBf9eP0lh3IeRzkQ3X-c191rMpOwsTTkX-eao...
Please note, that the patches do not reflect 100% what's described in
the doc - while writing the doc I came to conclusions, that some things
should be improved.
Since Milan told, that Python 3 packaging is very high priority for him
(even if the packages don't actually work yet), I would like to ask you
to get involved in reviewing the document.
After we establish a common ground, I will align my patches to reflect
what's in the doc.
P.S. Previous Markdown version was a pain to use so I just rewrote the
thing as a simple doc.
Thanks, Marcin
On 3/18/19 12:19 PM, Marcin Sobczyk wrote:
> Hi,
>
> it took a while... after trying to grasp "the big picture", I came up
> with these:
>
>
https://gerrit.ovirt.org/#/q/status:open+project:vdsm+branch:master+topic...
>
>
> The old topic:
>
>
https://gerrit.ovirt.org/#/q/status:open+project:vdsm+branch:master+topic...
>
>
> was rebased (not yet 100%) on top of 'build-system-overhaul'.
>
> I've tried to implement a solution, that would clean up our
> configure.ac/Makefiles, make Python 3 packaging possible, make running
> tests with multiple interpreter versions possible for the developers,
> etc.
> I know, that I will get "crazy looks" for writing m4 macros, but I
> really believe having stuff like 'VDSM_PY_SUPPORTED_MAJOR_VERSION' et
> al. will make developers' lives easier.
> I'm currently trying to address issues and comments raised by Milan, I
> would definitely like to get others opinions on these.
>
> Regards, Marcin
>
> On 3/4/19 3:46 PM, Marcin Sobczyk wrote:
>> On 3/1/19 2:39 PM, Milan Zamazal wrote:
>>> Marcin Sobczyk <msobczyk(a)redhat.com> writes:
>>>
>>>> I've posted a series of patches:
>>>>
https://gerrit.ovirt.org/#/q/topic:py3-rpm-packages+(status:open+OR+statu...
>>>>
>>>>
>>>> They do a couple of things:
>>>>
>>>> * add an '--enable-python3-build' argument to
'autogen.sh'
>>>> * modify 'Makefile.am' so it uses either 'vdsm.spec.in'
or
>>>> 'vdsm-py3.spec.in' file to build RPMs
>>>> * preserve the 'vdsm.spec[.in]' filename in dist archives for
>>>> both py2
>>>> and py3 packaging
>>>> * fix shebang lines in a dist-hook, so that py3 packages will
>>>> contain
>>>> only '#!/usr/bin/python3' shebangs
>>>> * prepare the CI for building py3 packages on fc28
>>> Hi Marcin, cool, thank you!
>>>
>>>> So actually, if we replace the dummy 'vdsm-py3.spec.in' file in
>>>> https://gerrit.ovirt.org/#/c/98119/ with something useful (be it the
>>>> nasty, hacky one, or the shiny, new one), we're ready to build py3
>>>> packages.
>>> I've made a dirty one: https://gerrit.ovirt.org/98150 (you can simply
>>> cherry pick the to wherever you need).
>>>
>>> However, it doesn't work, it's still built with Python 2 on my
Fedora
>>> 28. I can see a lot of warning such as
>>>
>>> DEPRECATION WARNING: python2 invoked with /usr/bin/python.
>>> Use /usr/bin/python3 or /usr/bin/python2
>>> /usr/bin/python will be removed or switched to Python 3 in
>>> the future.
>>>
>>> I can see that configure.ac in your patches still uses Python 2. Here
>>> is what I used in my private hacks to change that. Something similar
>>> should be done, depending on --enable-python3-build presence, and with
>>> properly detected Python versions.
>>
>> Good point - I'm currently working on resolving that. It got kinda
>> complicated but will keep you posted as soon as I get some results.
>>
>>>
>>> Would you like to make the necessary changes or should I make them
>>> myself?
>>>
>>> modified configure.ac
>>> @@ -48,7 +48,7 @@ AM_INIT_AUTOMAKE([-Wno-portability])
>>> # Checking for build tools
>>> AC_PROG_LN_S
>>> -AM_PATH_PYTHON([2.6])
>>> +AM_PATH_PYTHON([3.6])
>>> AC_ARG_ENABLE(
>>> [hooks],
>>> @@ -349,13 +349,13 @@ if test "$PYTHON3_SUPPORT" = "1";
then
>>> fi
>>> # Checking for python-devel
>>> -AC_PATH_PROG([PYTHON_CONFIG], [python-config])
>>> +AC_PATH_PROG([PYTHON_CONFIG], [python3-config])
>>> if test "x$PYTHON_CONFIG" = "x"; then
>>> - AC_MSG_ERROR([python-devel not found, please install it.])
>>> + AC_MSG_ERROR([python3-devel not found, please install it.])
>>> fi
>>> # Checking for python modules (sorted, please keep in order)
>>> -AX_PYTHON_MODULE([six], [fatal], python2)
>>> +AX_PYTHON_MODULE([six], [fatal], python3)
>>> # External programs (sorted, please keep in order)
>>> AC_PATH_PROG([CAT_PATH], [cat], [/bin/cat])