readthedocs build failure: missing ROOT dependency.

[hepdata]

readthedocs build failure: missing ROOT dependency.

[AndreasAlbert]

Some notes on what I have tried:

• Download root binaries and untar in python -> works trivially

• Sourcing thisroot.sh -> does not work. You can use os.environ to overwrite what python thinks most of the paths in environment variables are and thus propagate the effect of the source command into python. Unfortunately, this does not work for LD_LIBRARY_PATH as that is apparently cached at python startup, so changing it during runtime does not help. If this path is not set right, import ROOT fails because it cannot find various compiled libraries lib*.so. StackOverflow turned up two workarounds, both of which do not work:

  • os.execv gives a permission denied error (probably because we do not have rights to start processes on the build machine?)
  • Using cdll.LoadLibrary to load a given library works, but it is not clear to me how to proceed for the >100 library files in root/lib. I tried just loading all of them, but that fails. Do you need to import them in the right order?

[AndreasAlbert]

Maybe this works?

[clelange]

Yes, I think you need to use mock.

[clelange]

Can you assign the issue if you're working on it? Otherwise I might give it a go later when I'm tired of preparing presentation slides ;-)

[AndreasAlbert]

With mock, building runs through now. There are plenty of sphinx/latex warnings, though and the build does not produce the output. Not quite there yet.

[AndreasAlbert]

I think I was looking in the wrong documentation version before. Everything seems fine now.