Re: Dependencias.

[Blu <blu@daga.cl>]

On Tue, Apr 20, 2004 at 10:50:25AM +0200, Pablo Braulio wrote:
> Estoy intentando instalar amsn. Pese a lo que digan algunos, si que
> existe en debian. Si haces apt-cache search amsn, responde.
> Mi problema viene que cuando hago apt-get -t stable install amsn o
> apt-get install amsn (da lo mismo), aparece:
> 
> Reading Package Lists...
> Building Dependency Tree...
> Some packages could not be installed. This may mean that you have
> requested an impossible situation or if you are using the unstable
> distribution that some required packages have not yet been created
> or been moved out of Incoming.
> 
> Since you only requested a single operation it is extremely likely that
> the package is simply not installable and a bug report against
> that package should be filed.
> The following information may help to resolve the situation:
> 
> Sorry, but the following packages have unmet dependencies:
>   amsn: Depends: libpng10-0 but it is not going to be installed
>         Depends: docker but it is not going to be installed
>         Depends: tcltls but it is not going to be installed

amsn depende de esos paquetes que te dice, los cuales no pueden ser
instalados por alguna razon, probablemente porque romperian otros
paquetes.

> 
> Entonces hago apt-get install libpng10-0, y escupe:
> 
> Reading Package Lists...
> Building Dependency Tree...
> Some packages could not be installed. This may mean that you have
> requested an impossible situation or if you are using the unstable
> distribution that some required packages have not yet been created
> or been moved out of Incoming.
> 
> Since you only requested a single operation it is extremely likely that
> the package is simply not installable and a bug report against
> that package should be filed.
> The following information may help to resolve the situation:
> 
> Sorry, but the following packages have unmet dependencies:
>   libpng10-0: Depends: libc6 (>= 2.3.1-1) but 2.2.5-11.5 is to be installed

Depende de libc6 2.3.1-1, pero tienes instalada la libc6 2.2.5-11.5.
Seguramente si se actualiza ese paquete, que es uno de los mas
importantes, vas a romper varios otros paquetes que dependen de la
version anterior y no han sido probados o simplemente no funcionan con
la version mas reciente. Que te dice si tratas de instalar la version
mas reciente de la libc6?

> 
> Pregunta:
> Pensaba que apt solucionaba dependencias pero en mi caso no lo hace,
> ¿como lo soluciono?.

Soluciona dependencias siempre que sea posible. No se le puede pedir que
haga cosas imposibles. Podrias forzar la instalacion de la libc6 mas
reciente, pero yo no lo recomendaria pues seguramente algo se va a
romper, o podrias forzar la instalacion de los paquetes que faltan para
completar las dependencias y ver si funcionan con la libc6 instalada.

> 
> Si soy mas drástico e intento desinstalar libc6, el resultado es esta barbaridad de paquetes que se desinstalan.
> 
> Reading Package Lists...
> Building Dependency Tree...
> The following packages will be REMOVED:
>   aalib1 abiword abiword-common abiword-gtk adduser alien anacron apt apt-utils
[...]

Claro, sin libc6 nada va a funcionar. No se te ocurra desinstalarla
porque seguramente te quedarias con el sistema no funcional y tendrias
que repararlo con un disco de rescate.

Blu.