#18514: Upgrade of group cohomology spkg
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Reporter: SimonKing | Owner:
Type: defect | Status: needs_work
Priority: major | Milestone: sage-6.8
Component: packages: | Resolution:
optional | Merged in:
Keywords: group cohomology | Reviewers:
Authors: Simon King | Work issues: Create a new-style
Report Upstream: None of the above | package with least effort
- read trac for reasoning. | Commit:
Branch: | ad6cea059d383bbb0a97c8430caca125d2ca78b7
u/SimonKing/upgrade_of_group_cohomology_spkg| Stopgaps:
Dependencies: #18494 |
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Comment (by jdemeyer):
Replying to [comment:87 SimonKing]:
> Similarly to the !MeatAxe wrapper, I plan to use `OptionalExtension()`.
Hence, the Cython code would only result in an extension module under the
condition that both modular_resolution and database_gap are installed.
Surely, the module will compile without `database_gap`. So I think you
should just add `meataxe` as dependency for the Cython module.
The need of `database_gap` will make it fail at runtime. That's no
problem. It's even more user-friendly, since you can show a nice error
message at runtime if `database_gap` is not installed.
--
Ticket URL: <http://trac.sagemath.org/ticket/18514#comment:93>
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