I use LMDE x64. I'm trying to install an R library called Rattle, which is for data mining, which requires a few things, such as libgtk2.0-dev. So I try to install it and this happens:
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$ sudo apt-get install libgtk2.0-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:
libgtk2.0-dev : Depends: libgdk-pixbuf2.0-dev (>= 2.21.0) but it is not going to be installed
Depends: libpango1.0-dev (>= 1.20) but it is not going to be installed
Depends: libcairo2-dev (>= 1.6.4-6.1) but it is not going to be installed
E: Broken packages
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deb http://debian.linuxmint.com/latest/multimedia testing main non-free
deb http://debian.linuxmint.com/latest/security testing/updates main contrib non-free
deb http://debian.linuxmint.com/latest testing main contrib non-free
deb http://packages.linuxmint.com/ debian main upstream import backport
deb-src http://debian.linuxmint.com/latest/security testing/updates main contrib non-free
deb-src http://debian.linuxmint.com/latest testing main contrib non-free
deb-src http://packages.linuxmint.com/ debian main upstream import backport
Thanks in advance!