Erro de dependência instalando curl

Question

Eu queria instalar o curl para programar em C. No entanto, encontrei um problema de dependência:

$ sudo apt-get install libcurl4-openssl-dev
Reading package lists... Done
Building dependency tree       
Reading state information... Done
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.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
 libcurl4-openssl-dev : Depends: librtmp-dev but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

Eu tentei instalar as dependências e recebi este erro:

$ sudo apt-get install libgnutls-dev
Reading package lists... Done
Building dependency tree       
Reading state information... Done
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.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
 libgnutls-dev : Depends: libgnutls-openssl27 (= 2.12.23-12ubuntu2.1) but 3.2.16-1ubuntu2.1ppa1~trusty is to be installed
E: Unable to correct problems, you have held broken packages.

Eu verifiquei a versão libgnutls-openssl27 como sendo 3.2.16-1ubuntu2.1ppa1 ~ trusty.

Alguma ajuda?

    

Answer 1

Resolvi o problema fazendo isso:

sudo aptitude install libcurl4-openssl-dev

Primeiramente, ele me deu uma solução ingênua para aceitar o que eu não aceitei. (Porque nada deveria ser instalado naquela solução!) Então ele deu uma solução para fazer o downgrade de alguns pacotes. Eu aceitei a solução. Agora, não sei se fiz certo! O rebaixamento pode vir com algum problema de segurança. Seria ótimo se alguém pudesse comentar sobre isso.