amd : Library to order a sparse matrix prior to Cholesky factorization ( https://people.engr.tamu.edu/davis/suitesparse.html )
btf : Algorithm for matrix permutation into block triangular form ( https://people.engr.tamu.edu/davis/suitesparse.html )
camd : Library to order a sparse matrix prior to Cholesky factorization ( https://people.engr.tamu.edu/davis/suitesparse.html )
ccolamd : Constrained Column approximate minimum degree ordering algorithm ( https://people.engr.tamu.edu/davis/suitesparse.html )
cholmod : Sparse Cholesky factorization and update/downdate library ( https://people.engr.tamu.edu/davis/suitesparse.html )
colamd : Column approximate minimum degree ordering algorithm ( https://people.engr.tamu.edu/davis/suitesparse.html )
csparse : sparse matrix package ( https://people.engr.tamu.edu/davis/suitesparse.html )
cxsparse : Extended sparse matrix package ( https://people.engr.tamu.edu/davis/suitesparse.html )
klu : Sparse LU factorization for circuit simulation ( https://people.engr.tamu.edu/davis/suitesparse.html )
ldl : Simple but educational LDL^T matrix factorization algorithm ( https://people.engr.tamu.edu/davis/suitesparse.html )
libsirocco : Sirocco Is a ROot Certified COntinuator ( https://github.com/miguelmarco )
modular_decomposition : This is an implementation of a modular decomposition algorithm. ( https://www.irif.fr/users/fm/index )
mpfrcx : Mpfrcx is a library for the arithmetic of univariate polynomials ( https://www.multiprecision.org/mpfrcx/home.html )
qdldl : A free LDL factorisation routine for quasi-definite linear systems ( https://github.com/osqp/qdldl )
rbio : Sparse matrices Rutherford/Boeing format tools ( https://people.engr.tamu.edu/davis/suitesparse.html )
spex : a software package for SParse EXact algebra ( https://people.engr.tamu.edu/davis/suitesparse.html )
spqr : Multithreaded multifrontal sparse QR factorization library ( https://people.engr.tamu.edu/davis/suitesparse.html )
suitesparseconfig : Common configurations for all packages in suitesparse ( https://people.engr.tamu.edu/davis/suitesparse.html )
umfpack : Unsymmetric multifrontal sparse LU factorization library ( https://people.engr.tamu.edu/davis/suitesparse.html )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a sage-on-gentoo
For Paludis use this rsync : rsync://gentoo.zugaina.org/sage-on-gentoo-portage
If you have a problem : ycarus(-at-)zugaina.org