For pkgsrc:

http://wiki.netbsd.org/pkgsrc/how_to_use_pkgsrc_on_linux/

From:

http://nathanahlstrom.wordpress.com/2013/08/20/netbsd-pkgsrc-on-rhel-6-4/

wget http://ftp.netbsd.org/pub/pkgsrc/current/pkgsrc.tar.gz
tar xzvf pkgsrc.tar.gz -C /opt
cd /opt/pkgsrc/bootstrap
./bootstrap --prefix /opt/pkg

Edit your ~/.bash_profile to look like this:

PATH=$PATH:/opt/pkg/bin:/opt/pkg/sbin:$HOME/bin export PATH
# run from the command line to update your PATH. . ~/.bash_profile

End first quote.

Next, I quote, after completing the above steps, an example to get 
apache22 :

Now go into /opt/pkgsrc/www/apache22 and as root (or with sudo) run:

bmake install

It will download the source from apache.org mirrors, check the 
distribution integrity, compile it all for you, and install it with 
sensible defaults into /opt/pkg.

When it completes (it could take 10 minutes or so depending on your 
hardware) all the latest Apache HTTPD server will be installed to 
/opt/pkg/sbin and /opt/pkg/bin.

End second quote

I have not found a pkgsrc RPM that would automatically install and 
configure pkgsrc for an EL system.

What is the answer to a fundamental question:

how secure and authenticated is the pkgsrc repository (non-RPM, but a 
repository nonetheless)?

In so as possible, I use SL and related repositories because these in 
practice are reasonably secure and authenticated.  I do what I can to 
avoid using contaminated/compromised sources or executables, and work as 
"root" as secure as is practicable.

Yasha Karant

On 07/11/2014 01:42 AM, Jonathan Perkin wrote:
> * On 2014-07-11 at 09:02 BST, Elias Persson wrote:
>
>> On 2014-07-10 19:53, Yasha Karant wrote:
>>> I received the following email message that does not appear to be posted
>>> to the SL list.
>> It's on the list:
>> http://listserv.fnal.gov/scripts/wa.exe?A2=ind1407&L=scientific-linux-users&T=0&P=15184
>>
>> The weird way it was sent (via another list?) and the fact that
>> the SL lists lack list-id and such probably cause any filter you
>> might have to miss it though.
> Sorry, my fault.  I subscribed to a few different lists which I
> thought would be interested in this, and then sent one mail which
> bcc'd them - assuming that the list servers in question would handle
> the rest.
>
> Again, if you have any questions about this package set, I'd be
> delighted to answer them.  I've had a few come in so far, so I'll take
> the chance to summarise them here:
>
>   - You can browse the list of packages here:
>
>       http://pkgsrc.joyent.com/packages/Linux/el6/2014Q2/x86_64/All/
>
>   - They aren't in RPM format, but pkgsrc (the system used to build
>     them) does have pluggable backend support, and there was an
>     unfinished GSOC project to implement RPM support a few years back.
>     If someone is interested it would be fantastic to see this finished
>     so we can provide them as RPMs via yum instead.
>
>   - pkgsrc is branched every 3 months, and from that we generate the
>     binary packages and provide a new package set, so every quarter
>     there is a fresh update of new packages.
>
> Cheers,
>