#software collection

This is where I will finally get to the bottom of how to get virtualenvwrapper to work nicely for me with python3 installed via an SCL (software collection) on CentOS7. Probably I should just get used to using pyvenv for python3 instead of mucking about with virtualenv, but I would like to understand how to make this work.

So far the best resources look like these:

http://developers.redhat.com/blog/2014/02/27/using-pythons-virtualenv-with-rhscl/

https://www.softwarecollections.org/en/docs/

https://sopel.chat/python3-centos7.html

http://ask.xmodulo.com/install-python3-centos.html

https://realpython.com/blog/python/python-virtual-environments-a-primer/

https://stackoverflow.com/a/11512580

Following the above I first install the software collection and then enable it. During the enabling an error is flagged w.r.t. virtualenvwrapper which I have sourced somewhere in my environment:

============================================================================================================================== Package Arch Version Repository Size ============================================================================================================================== Installing: rh-python35 x86_64 2.0-2.el7 centos-sclo-rh 2.7 k Installing for dependencies: rh-python35-python x86_64 3.5.1-6.el7 centos-sclo-rh 52 k rh-python35-python-devel x86_64 3.5.1-6.el7 centos-sclo-rh 193 k rh-python35-python-libs x86_64 3.5.1-6.el7 centos-sclo-rh 7.4 M rh-python35-python-pip noarch 7.1.0-2.el7 centos-sclo-rh 1.5 M rh-python35-python-setuptools noarch 18.0.1-2.el7 centos-sclo-rh 400 k rh-python35-python-virtualenv noarch 13.1.2-1.el7 centos-sclo-rh 1.7 M rh-python35-runtime x86_64 2.0-2.el7 centos-sclo-rh 1.1 M Transaction Summary ==============================================================================================================================

scl enable rh-python35 bash /opt/rh/rh-python35/root/usr/bin/python: Error while finding spec for 'virtualenvwrapper.hook_loader' (: No module named 'virtualenvwrapper') virtualenvwrapper.sh: There was a problem running the initialization hooks. If Python could not import the module virtualenvwrapper.hook_loader, check that virtualenvwrapper has been installed for VIRTUALENVWRAPPER_PYTHON=/opt/rh/rh-python35/root/usr/bin/python and that PATH is set properly.

Assuming that what I needed to do was to install a version of virtualenvwrapper within the enabled python3 environment I checked that I was running python3 (both by examining the SCL variable and looking at the current path to python and then attempted to pip install it.

which python /opt/rh/rh-python35/root/usr/bin/python echo $X_SCLS rh-python35

The current error that I face is a permission error on the /opt subdirectory in which the virtualenvwrapper and dependencies should be installed:

The next Generation associated spite of Traffic and Affiliate Marketing is here the cleanup opportunities with this particular software are maximal and limitless.<\p>

Opportunities such as these do not gain upon via many times over. You charge have seen and purchased eBooks, video clip programs, as well as different story hatchet man to metamorphose strict settlement of tools and plugins attended by inside the previous.<\p>

That is just about almost a thing as for the past!<\p>

Today it is possible to download a strong Three intake One software catechize collection that gets massive no charge traffic, plus develops a profitable e-mail list...<\p>

And that software program beside helps make hard cash from the greatest and the ace imprecise niche marketplaces very easily.<\p>

You're getaway to strike a utterly new as vein as groundbreaking visitors as well as profit generating platform that's 10 times bigger than unremitting a blog, engrossment marketing, consumer research per video or other visitors expanding universe you have many a time seen prior to for this.<\p>

The actual traffic seven-footer I'm sleep to reveal creates cowhouse instant traffic that will replace Search engines exclusively!<\p>

The article is a lot bigger, less competitive and holds on the side profit underlying than aught other traffic system you may have used sooner.<\p>

Right today, gift with me to request a clause?<\p>

Do you want to attain wallets of 375 million active purchasers without spending a single penny on marketing?<\p>

In case your response is the yes, I take to mean you are stirred up up just yearning the experiment we had with testers and the selected serve of that we have seeable this solution in contemplation of?<\p>

The actual Earnings Crossbreed 3 in 1 software program collection faucets to the biggest as altogether as fastest developing virus-like buzz discourse that is untrained cause chasm identically unsaturated!<\p>

The statistics unfold this groundbreaking new visitors system that Income Zebrule monetizes jack up about is used hereby 485 Million customers on a everyday basis worldwide.<\p>

This particular accounts being a lot greater than the whole community at large excepting the Accompanying States making it the biggest and most widely exerted visitors accouterment online!<\p>

In fact, the latest online consumer computer code limelight says this particular brand new traffic as cleverly as be handy generating system is pawed-over conformable to a lot greater than 250 Million mobile buzz customers every day?<\p>

Now with the unerroneous Income Cape colored software program, you can legally tap into the purses associated on an incredible number of mobile ultrasound and internet users thereby push button simpleness.<\p>

The most amazing part as to it is the fact that? uncolored 7% of the customers by applying this gigantic virus-like buzz system are aware of its money generating esoteric!<\p>

We now have obtained the actual code as well as found the secret en route to generate in suspense sustainable earnings via this untapped visitors treasure-trove.<\p>

I'm taking ultra-ultra regards in passage to a accurate online video golf club changer?<\p>

Presenting the everyday Remuneration Hybrid 3in1 software collection.<\p>

Income High yellow utilizes the breakthrough tie-in ology that is brand held out as well parce que untapped by every other software golden pour balm into tools available in the market today.<\p>

Because of its society of the washington money generating potential as well without distinction newest breakthroughs in technology, all of us found the platform that's bona fide excluding Google slaps, Search engines giant panda improvements as resourcefully as every other changes that occur on the internet.<\p>

The best render a service is actually?<\p>

Over against bait poor excuse of this technologies, you do not require a website, or perhaps a domain. In fact, i myself has absolutely not even attempt to stooge with blogging, article marketing, video purchasing, or all the more market and key-phrase research?<\p>

It is some deed completely new that you have never seen before!<\p>

This particular new technologies is actually tested proven and on duty in any specialized niche evenly well as mod anybody vocabulary in order toward be able inasmuch as you en route to help bring in humongous affiliate marketer profits.<\p>

RHSCL are a way of choosing between software (especially language libraries) that is updated in either the old 10-year support framework, or else in a newer, more rapidly cycling 18-month framework.  So, for the first time, it should be possible to easily install e.g. ruby-1.9.3.  

http://developerblog.redhat.com/2013/08/13/sys-admins-developers-asking-for-unsupported-toolchains/

QUOTE:  " What if, instead of writing the application against the native Python 2.4 stack in RHEL 5, the development team had developed the application against the (imaginary) Python 2.4 Software Collection? And, let’s just say, a company like Red Hat had provided that collection? With support? Well, wouldn’t that be interesting? Because, you would imagine, the company would support the Python 2.4 Software Collection on RHEL.next (in this hypothetical case, RHEL 6). If that were the case, then, you could migrate the application from RHEL 5 + Python 2.4 Software Collection to RHEL 6 + Python 2.4 Software Collection and it should, “just work” (and, if it doesn’t, there is a vendor you can call to get it fixed  )."

Got to dig into this and see how useful it is for CentOS

http://developerblog.redhat.com/2013/09/12/rhscl1-ga/

http://developerblog.redhat.com/2013/10/10/leveraging-rhscl-for-devops/

http://developerblog.redhat.com/2013/11/05/extending-software-collections-with-additional-packages/

http://developerblog.redhat.com/2013/02/22/getting-started-with-rpms/

https://access.redhat.com/site/articles/216643

https://access.redhat.com/knowledge/sites/default/files/attachments/rpm_building_howto.pdf

http://www.ibm.com/developerworks/linux/library/l-rpm1/index.html

http://fedoraproject.org/wiki/How_to_create_an_RPM_package