sage-flatsurf pip package

[vdelecroix]

See #31164. Upstream code at ​https://github.com/flatsurf/sage-flatsurf and ​https://www.labri.fr/perso/vdelecro/sage-flatsurf.

[mkoeppe]

type is missing, and probably you should add surface_dynamics from #31224 also in dependencies to avoid race conditions on installation

[vdelecroix]

surface_dynamics is a runtime dependency. No need at install.

[git]

Branch pushed to git repo; I updated commit sha1. New commits:

​026d5af	31240: type file
​9fc8626	31240: add surface_dynamics as a depenency

[mkoeppe]

Replying to vdelecroix:

surface_dynamics is a runtime dependency. No need at install.

Note that by listing it in requirements.txt, it will be installed

[vdelecroix]

Note that it is both in dependencies and requirements.txt. Is it how it should be?

[mkoeppe]

The one in requirements.txt is redundant because the Sage package dependencies already make sure that surface_dynamics is installed first.

[vdelecroix]

Ok let me remove it from there then.

[git]

Branch pushed to git repo; I updated commit sha1. New commits:

​c4531cf

31240: remove surface_dynamics dependency from requirements.txt

[mkoeppe]

Could you merge the branch of #31224 please to facilitate testing

[git]

Branch pushed to git repo; I updated commit sha1. New commits:

​1dad153	31224: add surface-dynamics as an optional pip package
​4676aff	31240: merge ticket #31224 branch

[mkoeppe]

Could you put the title in SPKG.rst to the new format that includes a 1-line description?

Also it would probably be helpful to expand the description a tiny bit

[git]

Branch pushed to git repo; I updated commit sha1. New commits:

​fba93c5

31240: more in SPKG.rst

[vdelecroix]

Thanks.