git and emacs25 are not installable

[Gabriel Pérez-Cerezo <gabriel@gpcf.eu>]

I tried to install git and emacs25, yet I get the following:

# apt-get install git
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:
 git : Depends: git-man (< 1:2.15.1-.) but 1:2.16.1-1 is to be installed
       Recommends: patch but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

# apt-get install emacs25-nox
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:
 emacs25-nox : Depends: emacs25-bin-common (= 25.2+1-5) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

I have run apt-get update, my repos are up to date, yet the problem does
not go away.