Re: [gentoo-user] Trailing colon and integer in output of emerge

[Helmut Jarausch <jarausch@igpm.rwth-aachen.de>]

On 11/12/2012 01:28:08 PM, Redcap wrote:
> Today I noticed that emerge adds a colon together with an integer to  
> the
> version of every package it wants to update, e.g. it says
> 
> [ebuild     U ~] kde-base/kmail-4.9.3:4 [4.9.2:4] USE="handbook  
> kontact (-
> aqua) -debug {-test}" 0 kB
> 
> I never noticed the trailing ":4"  before and I have no idea what it  
> means. I
> searched the gentoo website  but haven't been able to find anything  
> about it.
> Does anyone what it is about?

It's the value of SLOT.  There are package for which multiple versions  
can be installed
at the same time, e.g. on my system

eix sys-devel/gcc shows

      Available versions:
         (2.95)  (*)2.95.3-r9 (~*)2.95.3-r10^s
         (3.1)   (*)3.1.1-r2
         (3.2)   (**)3.2.2^s (*)3.2.3-r4
         (3.3)   (~)3.3.6-r1^s
         (3.4)   3.4.6-r2^s
         (4.0)   (~*)4.0.4^s
         (4.1)   4.1.2^s
         (4.2)   (~)4.2.4-r1^s
         (4.3)   (~)4.3.3-r2^s 4.3.4^s (~)4.3.5^s 4.3.6-r1^s
         (4.4)   (~)4.4.2^s (~)4.4.3-r3^s 4.4.4-r2^s 4.4.5^s 4.4.6-r1^s  
4.4.7^s
         (4.5)   (~)4.5.1-r1^s (~)4.5.2^s 4.5.3-r2^s 4.5.4^s{tbz2}
         (4.6)   (~)4.6.0^s (~)4.6.1-r1^s (~)4.6.2^s (~)4.6.3^s{tbz2}
         (4.7)   {M}(~)4.7.0^s {M}(~)4.7.1^s{tbz2} {M}(~)4.7.2^s{tbz2}
=========^^^  SLOT value.

So, if you want to (re-)emerge the 4.6 version of gcc, you use
emerge -v1 sys-devel/gcc:4.6

(Just using emerge -v1 sys-devel/gcc would (re-)emerge the version with  
the highest slot value,
4.7 in this case.)

Helmut.