Dear sage-devel,
I emailed the maintainer of Gambit to try and raise the priority of
Gambit issue #207 which seems to prevent making it pip-installable:
I said making Gambit pip-installable would help with its integration
in SageMath, as more and more of Sage's standard or optional packages
are being made pip-installed, Gambit having been left out for now at:
Sage #21864: Use pip install for more packages
I also pointed to the present sage-devel discussion:
sage-devel discussion: gambit does not build (sage 8.2.beta6)
The maintainer of Gambit does "not have time nor resource to deal with
packaging at the moment", but "would certainly gladly accept patches",
saying "it is a very straightforward project to restructure the build
suitably, simply one that I do not have the time to do myself".
So if anyone knows what to do and can submit a patch upstream, that
would be wonderful.
Kind regards, Samuel