On Sun, May 31, 2009 at 11:48 PM, Fredrik Johansson <fredrik.johans...@gmail.com> wrote: > > Hi all, I could use some guidance for mpmath/Sage integration. > > To put mpmath in Sage, I presume it should just be installed into > site-packages as a regular Python library, so I should create an spkg > that does the usual python setup.py install.
Yep. Just copy what is done with some other spkg that packages some standard Python program. > (Is there a policy of > requiring the spkg to be a release version, or can I just put the > trunk in there? The development version of mpmath is usually stable. > Of course, arguably if a version is stable enough to put in Sage, it > is also stable enough for standalone release...) There is no such policy. It is up to the package maintainer (which in this case is you). > Then there is the question of what to do with the Cython extension > code, which contains partly of code to interface with Sage and partly > of speed extensions for mpmath. In my own development repository, I've > put this code in sage.libs.mpmath. Is this the right thing to do, or > should I place it elsewhere in Sage or in mpmath itself? sage.libs.mpmath makes a lot of sense to me. > I think placing all Cython code in sage.* for now is easier because it > depends on and interfaces with Sage libraries (such as its GMP/MPIR > wrappers) and I can build it easily with sage -br. In the future, when > things stabilize, I should be able to separate out the > Sage-independent Cython code (which really only depends on GMP/MPIR > and the Python API) and move it to mpmath itself. > > The namespace sage.libs.mpmath.all currently provides all mpmath > functions as well as wrapper functions for internal Sage use, and > importing from here instead of directly from mpmath will monkey patch > some fast Cythonized functions into mpmath. This monkey patching is > not so fragile as it possibly sounds, but it's not necessarily > sustainable, so I might have to change it to make mpmath patch itself > on startup by importing say > sage.libs.mpmath._cythonized_backend_library, which shouldn't be a > problem. That sounds reasonable to me. William --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to sage-devel-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
