Here (NASA/GSFC) we use conda-based virtual envs on CentOS 6, and
they work great -- I turned our sysadmins on to conda about a year
ago, and they *love* it (no more compiling python, woo! ;)
All recent versions of twisted are available as conda packages:
# conda search twisted
Fetching package metadata: ......
twisted    12.3.0    py27_0  defaults
           12.3.0    py26_0  defaults
           13.0.0    py27_0  defaults
           13.0.0    py26_0  defaults
           13.1.0    py27_0  defaults
           13.1.0    py26_0  defaults
           13.2.0    py27_0  defaults
           13.2.0    py26_0  defaults
           14.0.0    py27_0  defaults
           14.0.0    py26_0  defaults
           14.0.2    py27_0  defaults
           14.0.2    py26_0  defaults
           15.0.0    py27_0  defaults
           15.0.0    py26_0  defaults
           15.1.0    py27_0  defaults
           15.1.0    py26_0  defaults
           15.2.0    py34_0  defaults
           15.2.0    py27_0  defaults
           15.2.0    py26_0  defaults
           15.2.1    py34_0  defaults
        .  15.2.1    py27_0  defaults
           15.2.1    py26_0  defaults
           15.3.0    py34_0  defaults
           15.3.0    py27_0  defaults
           15.3.0    py26_0  defaults
           15.4.0    py35_0  defaults
           15.4.0    py34_0  defaults
           15.4.0    py27_0  defaults
           15.5.0    py35_0  defaults
           15.5.0    py34_0  defaults
        *  15.5.0    py27_0  defaults

Steve

On 12/15/2015 11:40 AM, Ray Cote wrote:
We have a fair bit of Python 2.7 Twisted code deployed on RHEL and
CentOS 5 and 6.
In each case, we build from source and do a make altinstall so we’re
running a Python separate from the system’s.
Just takes a few minutes to get everything installed and running.

On Tue, Dec 15, 2015 at 6:30 AM, Phil Mayers <p.may...@imperial.ac.uk
<mailto:p.may...@imperial.ac.uk>> wrote:

    On 15/12/15 04:16, Amber "Hawkie" Brown wrote:

        There is a solution to this, and Nick Coghlan has mentioned it to me
        many times -- Software Collections for RHEL and CentOS. Software
        Collections is RH's answer to "new software" on "stable
        distributions" --  SCLs operate side-by-side with system
        packages, so
        it won't break anything. Since you're a CentOS 6.7 user, the
        standard
        SCL should work (it's 6.5+).


    I really disliked the SCLs when I looked at it. The supported
    use-case seems to be a kind of hugely over-engineered set of
    wrapper/environment setup scripts:

    scl enable python2.7 pip install blah

    ...ad infinitum.

    Personally - and I guess for others as well - the SCLs will be
    off-putting. It's a shame there isn't a simpler solution, namely
    EPEL python2.7 - having a 2nd python in a different path is quite
    safe, we do it routinely.

    It's hugely annoying that RHEL6 and derivatives missed out on Python
    2.7 :o(


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--
Raymond Cote, President
voice: +1.603.924.6079 email: rgac...@appropriatesolutions.com skype:
ray.cote




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