Le 10/01/2019 à 16:01, Nathan Dunfield a écrit :
On Thursday, January 10, 2019 at 6:47:33 AM UTC-6, vdelecroix wrote:
Le 10/01/2019 à 04:47, Nathan Dunfield a écrit :
P.S. In the Debian package "sage" does not accept the "-pip" flag, even
though installing the "sagemath" package does pull in "pip" (tested on a
clear Sid Docker container). Why is this? I ask because our current
instructions for installing SnapPy into SageMath use "sage -pip".
The sage script in Debian is indeed a restricted version of the
original sage script (to avoid messing up with the system). You
can just use the pip from the system. That works fine if you
source the environment variables first:
$ source /usr/share/sagemath/bin/sage-env
$ pip install surface_dynamics --user
Yes, snappy installs fine with the system pip (even without sourcing
sage-env), though as you know from writing the flatsurf docs, this
distinction rather complicates the installation instructions.
Indeed. And this have to be discussed with Debian distribution as
Dima pointed out. The (long term) answer will probably be: make
snappy a proper Debian package in two versions "snappy" and
"snappy-sagemath".
Our issue reports have actually come from people who installed SnapPy in
their system Python with pip only to have it crash when starting the
SnapPy app because they had also previously installed Sage via their
package manager. In other words, our "installing SnapPy in Linux (no
Sage)" instructions will fail if user has previously installed Sage in a
particular way.
Could you repeat the order in which things are broken. Is this
1) install snappy via pip
2) install sagemath via apt
3) launch python and load snappy
or/and
1) install sagemath via apt
2) install snappy via pip
I believe the following should work
1) install sagemath via apt
2) source sage-env and install snappy via pip
3) launch sage and load snappy
But might be broken when loading from python.
Vincent
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