[scl.org] Question about generating RPMs that depend on SCLs (like python27)

[Orion Poplawski]

On 07/15/2014 04:06 PM, Orion Poplawski wrote:
> On 07/15/2014 03:55 PM, Alan Robertson wrote:
>> OK.  It was pointed out to me off-list that I was comparing the wrong thing.
>> I should have been looking at python27-python.  Here's what that package shows:
>>
>> bash-4.1# *rpm -q --provides python27-python*
>> python27-python-abi = 2.7
>> python27-python(abi) = 2.7
>> python27-Distutils
>> python27-python2 = 2.7.5
>> python27-python-sqlite = 2.3.2
>> python27-python-ctypes = 1.0.1
>> python27-python-hashlib = 20081120
>> python27-python-uuid = 1.31
>> python27-python-argparse = 2.7.5-7.el6.centos.alt
>> python27-python = 2.7.5-7.el6.centos.alt
>> python27-python(x86-64) = 2.7.5-7.el6.centos.alt
>> bash-4.1#
>>
>> Either I'm failing to do something to appease the automagical python-version
>> detection (which I have no idea how it figures that out), or the property
>> names in python27-python should not have the "python27-" prefix.
>>
>> Anyone know which it is - and how to deal with it?
>>
>> It seems to me like the attributes of the provides should not be prefixed by
>> python27.  But I'm new to this SCL stuff...
>
> FWIW - they "python(abi) = ##" requires is added by /usr/lib/rpm/pythondeps.sh
> as part of the standard rpm dependency generation.  So yes, for this to work
> with the scl, either the scl needs to provide "python(abi) = 2.7" or you will
> need to disable the automatic requires generation or filter out the
> python(abi) line.
>
> We're all new to this SCL stuff.... :)
>
>

Here's the magic from 
https://access.redhat.com/documentation/en-US/Red_Hat_Developer_Toolset/2/html/Software_Collections_Guide/sect-Extending_the_python27_and_python33_Software_Collections.html


# Similarly, override __python_requires for automatic dependency generator
%global __python_requires %{%{scl_python}_python_requires}


-- 
Orion Poplawski
Technical Manager                     303-415-9701 x222
NWRA, Boulder/CoRA Office             FAX: 303-415-9702
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