Upload script fails with conda_build >= 2.0.0

[jjhelmus]

Copied from conda-forge/conda-smithy#282

conda build version 2.0.0 changed the call signature of the bldpkg_path() function so that it now takes a second config argument. This breaks the upload_or_check_non_existence.py script in conda-smithy, see conda-forge/doctr-feedstock#5.

A temporary fix which pins conda-build to 1.x was made in #27 but should be reverted once the upload script is updated to account for this new call signature.

[jjhelmus]

The following change around line 25 to the upload_or_check_non_existence.py script seems to fix the issue and would allow for compatibility between conda build 1.x and 2.x:

try:
     fname = bldpkg_path(meta)
except TypeError:
     # conda-build >= 2.0.0 takes a config argument
     from conda_build.config import Config
     config = Config()
     fname = bldpkg_path(meta, config)

I would appreciate hearing what @msarahan or @pelson thinks of this change.

[msarahan]

That change would be fine.

[pelson]

Yep, I'd merge this.

[pelson]

This is now fixed, and conda-smithy is now directing feedstocks at the script in this repo.