Re: [gentoo-user] Is it possible to have perl-5 and perl-6 installed and in use concurrently?

[Dale <rdalek1967@gmail.com>]

William Kenworthy wrote:
> On Sat, 2011-06-18 at 19:28 -0500, Dale wrote:
>    
>> William Kenworthy wrote:
>>      
>>> Is it possible to have perl-5 and perl-6 installed and in use
>>> concurrently?
>>>
>>> This has come up because I am trying to upgrade mythtv using overlays
>>> because gentoos mythtv builds are getting rather ancient - the drscream
>>> (layman) overlay is requiring a perl 6 module, but the manual github
>>> overlay which doesnt is January so is getting out of date anyway.
>>>
>>> or can someone point me to a recent overlay thats regularly updated and
>>> works(!)  Currently want to go from mythtv .23-gentoo to .24-fixes and
>>> then .25 as its soon to be stable.
>>>
>>> BillK
>>>
>>>
>>>        
>> I had a look at the ebuild, it doesn't appear to be slotted.  So, it is
>> most likely not possible to have both at the same time.  The relavant
>> portion:
>>
>> LICENSE="|| ( Artistic GPL-1 GPL-2 GPL-3 )"
>> SLOT="0"
>> KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~s390
>> ~sh ~sparc ~x86 ~x86-fbsd"
>>
>> All the ebuilds I looked at had the SLOT="0" which means no slots.
>>
>> If I am wrong, someone post and correct me.
>>
>> Dale
>>
>> :-)  :-)
>>
>>      
> Its actually not "slotting" I am after - slots are a choice of setting
> the system to one or the other (correct me if I am wrong) whereas I want
> to use perl-5 for eveyting except this which wants perl-6.
>
> One item is that the ebuild for perl5 is "dev-perl/libwww-perl" whereas
> for perl 6 its "dev-perl/libwww-perl-6" which indicates co-existence
> might be possible - but I dont want to break a system to prove it
> doesnt :)
>
> BillK
>
>    

In order to have two versions of the same package on a system at the 
same time, the system has to be able to figure out which is which.  That 
is what Gentoo calls slots.  Here, I have python 2 and 3 installed.  I 
have the system set to python 2, with eselect, but some packages CAN use 
python 3 if it so chooses.  Maybe this link explains it better:

http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?part=2&chap=1#doc_chap5

Hope that helps.

Dale

:-)  :-)