On Monday, August 7, 2017 at 1:25:04 PM UTC+12, François Bissey wrote:
>
>
>
> On 07/08/17 13:18, François Bissey wrote:
> > On 05/08/17 23:56, Frédéric Chapoton wrote:
> >> Could you please try with the branch "public/python3-experiment-v0"
> >> that I have just put in trac. This is a (very ugly) sequence of ad-hoc
> >> fix-up commits, just to see up to where we can go.
> >>
> >
> > That bit is not python2 compatible:
> > diff --git a/sage/libs/singular/singular.pyx
> > b/sage/libs/singular/singular.pyx
> > index fa8cd7ad8e..f79cbe724f 100644
> > --- a/sage/libs/singular/singular.pyx
> > +++ b/sage/libs/singular/singular.pyx
> > @@ -774,7 +774,8 @@ cdef init_libsingular():
> > if not os.path.exists(lib):
> > raise ImportError("cannot locate Singular library
> > ({})".format(lib))
> >
> > - handle = dlopen(lib, RTLD_GLOBAL|RTLD_LAZY)
> > + lib = bytes(lib, encoding='utf-8')
> > + handle = dlopen(lib, RTLD_GLOBAL|RTLD_LAZY)
> > if not handle:
> > err = dlerror()
> > raise ImportError("cannot load Singular library
> > ({})".format(err))
> >
> > "bytes" is apparently really an alias for "str" in python2.7.
> > Anyway it breaks when I try to build the doc with python2.7
> > (I am not trying to build it with python3 until sage starts):
> > File "sage/libs/singular/singular.pyx", line 804, in init
> > sage.libs.singular.singular
> > init_libsingular()
> > File "sage/libs/singular/singular.pyx", line 777, in
> > sage.libs.singular.singular.init_libsingular
> >
> (/dev/shm/portage/sci-mathematics/sage-9999/work/sage-9999/src-python2_7/build/cythonized/sage/libs/singular/singular.cpp:8508)
>
>
> >
> > lib = bytes(lib, encoding='utf-8')
> > TypeError: str() takes at most 1 argument (2 given)
> >
> > So if we want to keep compatibility this will have to be
> > guarded by python version.
> >
>
> I solved that particular one by replacing the patch with:
> @@ -774,7 +774,11 @@ cdef init_libsingular():
> if not os.path.exists(lib):
> raise ImportError("cannot locate Singular library
> ({})".format(lib))
>
> - handle = dlopen(lib, RTLD_GLOBAL|RTLD_LAZY)
> + try:
> + lib = bytes(lib, encoding='utf-8')
> + except TypeError:
> + pass
> + handle = dlopen(lib, RTLD_GLOBAL|RTLD_LAZY)
> if not handle:
> err = dlerror()
> raise ImportError("cannot load Singular library
> ({})".format(err))
>
>
> But no I have another failure building the doc:
> OSError: [graphs ]
> /dev/shm/portage/sci-mathematics/sage-9999/work/sage-9999/src-python2_7/doc/en/reference/graphs/sage/graphs/generic_graph_pyx.rst:11:
>
>
> WARNING: error while formatting arguments for
> sage.graphs.generic_graph_pyx.find_hamiltonian: 'ascii' codec can't
> decode byte 0xc3 in position 30: ordinal not in range(128)
>
> I may be using some stuff not yet in a beta release so it may be
> difficult to tease out.
> I will see on doing experiments on top of 8.1.beta1 proper.
Same thing on a plain 8.1.beta1
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