Не удалось установить Octave в Ubuntu 14.04 LTS

Из другого поста я знаю, что должен бежать sudo apt-get build-dep octave перед установкой октавы,

но это возвращает:

Reading package lists... Done
Building dependency tree

Reading state information... Done
The following packages have unmet dependencies:
 gfortran : Depends: gfortran-4.8 (>= 4.8.2-5~) but it is not going to be installed
 libarpack2-dev : Depends: libarpack2 (= 3.1.5-2) but it is not going to be installed
 libcurl4-gnutls-dev : Depends: libkrb5-dev but it is not going to be installed
 libfltk1.3-dev : Depends: libfltk-gl1.3 (= 1.3.2-4) but it is not going to be installed
 libfontconfig1-dev : Depends: libfontconfig1 (= 2.11.0-0ubuntu4) but 2.11.0-0ubuntu4.1 is to be installed
 libftgl-dev : Depends: libftgl2 (= 2.1.3~rc5-4+nmu1) but it is not going to be installed
               Depends: libgl1-mesa-dev or
                        libgl-dev
               Depends: libglu1-mesa-dev but it is not going to be installed or
                        libglu-dev
 libglpk-dev : Depends: libsuitesparse-dev
 libhdf5-dev : Depends: libhdf5-7 (= 1.8.11-5ubuntu7)
 liblapack-dev : Depends: liblapack3 (= 3.5.0-2ubuntu1) but it is not going to be installed
 libqrupdate-dev : Depends: libqrupdate1 (= 1.1.1-1) but it is not going to be installed
E: Build-dependencies for octave could not be satisfied.

тогда я попытался бежать sudo apt-get install gfortran-4.8, это возвращает

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:
 gfortran-4.8 : Depends: gcc-4.8-base (= 4.8.2-19ubuntu1) but 4.8.4-2ubuntu1~14.04 is to be installed
                Depends: gcc-4.8 (= 4.8.2-19ubuntu1) but 4.8.4-2ubuntu1~14.04 is to be installed
                Depends: libgfortran-4.8-dev (= 4.8.2-19ubuntu1) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

я должен удалить конфликтующие пакеты и повторить шаги выше? нарушит ли это действие другие зависимости, как я могу узнать?

цените комментарии, если кто-нибудь сталкивался с этой проблемой.