errors when installing NS 3 libraries

[Hawraa Sh.]

hi everyone,

when I'm trying to install  NS3 libraries with this instruction

 sudo apt-get install gcc g++ python python-dev mercurial bzr gdb valgrind gsl-bin libgsl-dev libgsl2 flex bison tcpdump sqlite sqlite3 libsqlite3-dev libxml2 libxml2-dev libgtk2.0-0 libgtk2.0-dev uncrustify doxygen graphviz imagemagick texlive texlive-latex-extra texlive-generic-extra texlive-generic-recommended texinfo dia texlive texlive-latex-extra texlive-extra-utils texlive-generic-recommended texi2html python-pygraphviz python-kiwi python-pygoocanvas libgoocanvas-dev python-pygccxml

this error pop up

Reading package lists... Done

Building dependency tree       

Reading state information... Done

Note, selecting 'python-is-python2' instead of 'python'

Note, selecting 'python-dev-is-python2' instead of 'python-dev'

Package libgsl2 is not available, but is referred to by another package.

This may mean that the package is missing, has been obsoleted, or

is only available from another source

However the following packages replace it:

  libgslcblas0:i386 libgslcblas0

Package python-pygccxml is not available, but is referred to by another package.

This may mean that the package is missing, has been obsoleted, or

is only available from another source

However the following packages replace it:

  python-pygccxml-doc

E: Package 'libgsl2' has no installation candidate

E: Unable to locate package texlive-generic-extra

E: Unable to locate package texlive-generic-recommended

E: Unable to locate package texlive-generic-recommended

E: Unable to locate package python-pygraphviz

E: Unable to locate package python-kiwi

E: Unable to locate package python-pygoocanvas

E: Unable to locate package libgoocanvas-dev

E: Package 'python-pygccxml' has no installation candidate