Re: [gentoo-user] curses of ncurses :(

[Alan McKinnon]

On 27/08/2015 17:25, gevisz wrote:
> 2015-08-27 17:52 GMT+03:00 Marc Joliet <marcec@×××.de>:
>> Am Thu, 27 Aug 2015 17:34:24 +0300
>> schrieb gevisz <gevisz@×××××.com>:
>>
>>> I do not understand:
>>> 1) why portage wants to upgrade ncurses-5.9-r3 to ncurses-5.9-r101
>>>     (because it is marked),
>>> 2) why it can not,
>>> 3) what to do with this block.
>>>
>>> $ eix ncurses
>>>
>>> [I] sys-libs/ncurses
>>>      Available versions:
>>>      (0)    5.9-r3 ~5.9-r4 ~6.0(0/6)
>>>      (5)    ~5.9-r101(5/5)
>>>        {ada +cxx debug doc gpm minimal profile static-libs test
>>> threads tinfo trace unicode ABI_MIPS="n32 n64 o32" ABI_PPC="32 64"
>>> ABI_S390="32 64" ABI_X86="32 64 x32"}
>>>      Installed versions:  5.9-r3(10:48:01 PM 03/29/2015)(cxx gpm
>>> unicode -ada -debug -doc -minimal -profile -static-libs -tinfo -trace
>>> ABI_MIPS="-n32 -n64 -o32" ABI_PPC="-32 -64" ABI_S390="-32 -64"
>>> ABI_X86="32 64 -x32")
>>>      Homepage:            https://www.gnu.org/software/ncurses/
>>> http://dickey.his.com/ncurses/
>>>      Description:         console display library
>>>
>>> # emerge --update --deep --with-bdeps=y --newuse --backtrack=90 --ask world
>>>
>>> These are the packages that would be merged, in order:
>>>
>>> Calculating dependencies... done!
>>> [ebuild     U  ] dev-util/diffstat-1.60 [1.58]
>>> [ebuild     U  ] dev-libs/libnl-3.2.26 [3.2.25]
>>> [ebuild     U  ] dev-libs/openssl-1.0.2d [1.0.1p] USE="asm%* -sctp%"
>>> [ebuild  NS   ~] sys-libs/ncurses-5.9-r101 [5.9-r3] USE="gpm unicode
>>> -tinfo" ABI_X86="32 (64) (-x32)"
>>> [ebuild     U  ] www-client/firefox-38.2.0 [38.1.1]
>>> [blocks B      ] <sys-libs/ncurses-6:0 ("<sys-libs/ncurses-6:0" is
>>> blocking sys-libs/ncurses-5.9-r101)
>>>
>>>  * Error: The above package list contains packages which cannot be
>>>  * installed at the same time on the same system.
>>>
>>>   (sys-libs/ncurses-5.9-r101:5/5::gentoo, ebuild scheduled for merge)
>>> pulled in by
>>>     >=sys-libs/ncurses-5.7-r7[unicode?]
>>> (>=sys-libs/ncurses-5.7-r7[unicode]) required by
>>> (sys-process/procps-3.3.9-r2:0/0::gentoo, installed)
>>>     >=sys-libs/ncurses-5.2-r2 required by
>>> (app-editors/vim-7.4.273:0/0::gentoo, installed)
>>>     >=sys-libs/ncurses-5.2-r2 required by
>>> (app-editors/gvim-7.4.273:0/0::gentoo, installed)
>>>     >=sys-libs/ncurses-5.1 required by
>>> (app-shells/zsh-5.0.5:0/0::gentoo, installed)
>>>     sys-libs/ncurses required by
>>> (dev-lang/ruby-1.9.3_p551-r1:1.9/1.9::gentoo, installed)
>>>     >=sys-libs/ncurses-5.2 required by (sys-apps/less-478:0/0::gentoo,
>>> installed)


...


> P.S. I have too much "required by" lines. So, if the portage will not
>        resolve this issue automatically, I will stop to update my system at all.


I don't think that's the right attitude, portage really only needs to
tell you the first one.

What is happening is two SLOTs of the same package want to be updated,
but the specific versions block each other (this is definitely a bug of
some kind as the whole point of SLOTs is you *can* have both)

So portage is telling you that it can't do what it wants to do with
ncurses as there is a blocker. It needs to update ncurses because procps
wants it. And so does Vim. And gvim, zsh, ruby and more. Why so many?
Because ncurses is a very basic piece of code and lots of things use it,
and portage blindly printed all of them

You only have one error. The 50 or more Required lines are total noise
at this point and distract you from seeing things in the proper light.
Portage is well known for often giving really sucky output, this is such
a time.

Fix the real error, and all that junk on the screen goes away. No reason
to stop updating.


>
> P.P.S. This "blocking" issue was a fun only during the first two years with
>          Gentoo. Now, it becomes more and more annoying...
>
>> The funny thing is that the day before, on another computer, portage resolved
>> the blocker automatically by re-emerging llvm and octave (slot-operator ("rR")
>> type re-emerge).
>>
>> HTH
>> --
>> Marc Joliet
>> --
>> "People who think they know everything really annoy those of us who know we
>> don't" - Bjarne Stroustrup
>


-- 
Alan McKinnon
alan.mckinnon@×××××.com