dev-lang/python             readline sqlite
dev-libs/boost              python
dev-libs/boehm-gc           threads
dev-python/cvxopt           glpk gsl
dev-python/ipython          notebook nbconvert
dev-python/numpy            lapack
dev-python/pplpy            doc
media-libs/libglvnd         X
media-gfx/tachyon           png opengl
sci-mathematics/flint       ntl
sci-libs/cddlib             tools
sci-mathematics/eclib       flint
sci-mathematics/glpk        gmp
sci-mathematics/gmp-ecm     -openmp
sci-mathematics/maxima      ecl
sci-mathematics/lcalc       pari
sci-mathematics/pari        data gmp doc threads
sys-libs/zlib               minizip
sys-devel/gcc               fortran

# bliss seems to be broken with latest gmp at least in sage doctests
sci-libs/bliss              -gmp

# matplotlib requirements
media-libs/harfbuzz icu
dev-python/pillow webp
virtual/imagemagick-tools tiff jpeg
media-gfx/imagemagick tiff jpeg
# matplotlib (testing)
x11-base/xorg-server        xvfb

# sage doc pdf generation
app-text/texlive extra luatex
app-text/texlive-core cjk xetex xindy