Bug#946233: Non-deterministic build depending on presence of cmake

[Drew Parsons]

On 2020-02-18 01:58, Joachim Reichel wrote:
> The bug number for dh-python is #949305.
> 
> I don't see how the dh-python bug is blocking a fix here, so I'll leave
> setting the tag to you. In addition, if they decide to rank "cmake" 
> higher
> than "distutils" (e.g. when sorting the plugins alphabetically), then 
> your
> package will use the wrong toolchain all the time.

I doubt they'd prefer cmake over distutils.  But the ambiguity is real, 
since both install systems are available for the package.


> Adding a Build-Conflicts: would do the right thing, but might be a bit
> drastic. There seems to be another solution: pybuild supports "-s" or
> "--system" to select "distutils". Not sure how to make dh to pass 
> arguments to
> pybuild ... But pybuild also supports the environment variable 
> PYBUILD_SYSTEM.
> Just mentioning, I did not test that.

This sounds like the right way to go.  I think we can make it work this 
way. The package could build either way, and therefore the package build 
needs to specify the desired system.

Thanks Joachim.

Drew