samba - Mar 2018 - samba-tool error just after samba 4.8.0 install

Ok, for what i understand, this is a compatibility issue with python 2.6.
This seems to be in relation with Dict Comprehensions
(https://www.python.org/dev/peps/pep-0274/).

So yet, samba 4.8 cannot run on any rhel 6 like distribution.

Was it intended ?

Christophe Borivant

----- Mail original -----
De: "samba" <samba at lists.samba.org>
À: "samba" <samba at lists.samba.org>
Envoyé: Mercredi 14 Mars 2018 15:31:26
Objet: Re: [Samba] samba-tool error just after samba 4.8.0 install

Could it be a python 2.6 compatibility issue ?

Christophe Borivant

----- Mail original -----
De: "samba" <samba at lists.samba.org>
À: "samba" <samba at lists.samba.org>
Envoyé: Mercredi 14 Mars 2018 10:40:05
Objet: [Samba] samba-tool error just after samba 4.8.0 install

Hi all,

I just compiled and installed samba 4.8.0 on my centos 6.9 server.
After installation I wanted to run samba-tool dbcheck but it fails with the
following message even when running samba-tool --help :

[root at frtlse-srv018 samba-4.8.0]# samba-tool --help
ERROR(<type 'exceptions.SyntaxError'>): uncaught exception -
invalid syntax (ms_schema.py, line 280)
  File "/usr/bin/samba-tool", line 44, in <module>
    retval = cmd._run("samba-tool", subcommand, *args)
  File "/usr/lib64/python2.6/site-packages/samba/netcmd/__init__.py",
line 223, in _run
    cmd = self.subcommands[cmd_name]
  File "/usr/lib64/python2.6/site-packages/samba/netcmd/main.py", line
35, in __getitem__
    fromlist=['cmd_%s' % attr]),
  File "/usr/lib64/python2.6/site-packages/samba/netcmd/dbcheck.py",
line 28, in <module>
    from samba.dbchecker import dbcheck
  File "/usr/lib64/python2.6/site-packages/samba/dbchecker.py", line
32, in <module>
    from samba.descriptor import get_wellknown_sds, get_diff_sds
  File "/usr/lib64/python2.6/site-packages/samba/descriptor.py", line
31, in <module>
    from samba.schema import get_schema_descriptor
  File "/usr/lib64/python2.6/site-packages/samba/schema.py", line 28,
in <module>
    from samba.ms_schema import read_ms_schema

here is the configure command I use : ./configure --enable-fhs --prefix=/usr
--sysconfdir=/etc --localstatedir=/var --libdir=/usr/lib64
--with-lockdir=/var/cache/samba

---------------------------------------------
Christophe Borivant


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On Wed, 2018-03-14 at 16:21 +0100, Christophe Borivant via samba
wrote:
> Ok, for what i understand, this is a compatibility issue with python 2.6.
> This seems to be in relation with Dict Comprehensions
(https://www.python.org/dev/peps/pep-0274/).
> 
> So yet, samba 4.8 cannot run on any rhel 6 like distribution.
> 
> Was it intended ?
> 
> Christophe Borivant
I don't think it was intentional, but it is showing the increasing cost
of maintaining Samba's compatibility with a version of python first
released in 2008!

Andrew Bartlett
-- 
Andrew Bartlett                       http://samba.org/~abartlet/
Authentication Developer, Samba Team  http://samba.org
Samba Developer, Catalyst IT          http://catalyst.net.nz/services/samba

I understand but do you think the work will be done to make it compatible again
?
If not, there should be a statement in the changelog about this broken
compatibility.

Christophe Borivant

----- Mail original -----
De: "Andrew Bartlett" <abartlet at samba.org>
À: "Christophe BORIVANT" <cborivant at devinlec.com>,
"samba" <samba at lists.samba.org>
Envoyé: Mercredi 14 Mars 2018 19:57:58
Objet: Re: [Samba] samba-tool error just after samba 4.8.0 install

On Wed, 2018-03-14 at 16:21 +0100, Christophe Borivant via samba
wrote:
> Ok, for what i understand, this is a compatibility issue with python 2.6.
> This seems to be in relation with Dict Comprehensions
(https://www.python.org/dev/peps/pep-0274/).
> 
> So yet, samba 4.8 cannot run on any rhel 6 like distribution.
> 
> Was it intended ?
> 
> Christophe Borivant
I don't think it was intentional, but it is showing the increasing cost
of maintaining Samba's compatibility with a version of python first
released in 2008!

Andrew Bartlett
-- 
Andrew Bartlett                       http://samba.org/~abartlet/
Authentication Developer, Samba Team  http://samba.org
Samba Developer, Catalyst IT          http://catalyst.net.nz/services/samba