# snappy: Topology and geometry of 3-manifolds, with a focus on hyperbolic structures¶

## Description¶

Studying the topology and geometry of 3-manifolds, with a focus on hyperbolic structures.

GPLv2+

## Upstream Contact¶

https://pypi.org/project/snappy/

optional

## Version Information¶

requirements.txt:

# Note: As of 2021-01, snappy will pull in cypari (!= cypari2) as a dependency
# if installed as a wheel but will actually use Sage's cypari2.
# cypari contains a statically linked copy of pari and other libraries
# and will remain completely unused (wastes 30M).  Snappy is about 165M.
# See https://trac.sagemath.org/ticket/31180
snappy
# cypari 2.4.0 has a broken sdist, https://trac.sagemath.org/ticket/31180
cypari !=2.4.0
# An optional database (110M uncompressed)
snappy_15_knots


## Equivalent System Packages¶

However, these system packages will not be used for building Sage because spkg-configure.m4 has not been written for this package; see https://trac.sagemath.org/ticket/27330