create provider conditionally based on existence of attribute #325
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fixes compatibility with 0.7.0 onwards
fixes #280
fixes #314
fixes bazelbuild/bazel#3792
Good news:
Small and easy fix. Identical to what @lberki did but just for the additional provider that was added.
Bad news:
Actually utilizing the feature @iirina exposed for us proves to be more tricky than expected for two reasons:
create_provider
API doesn't take into accountexports
Note:
The provider is hardcoded to not create an ijar exactly due to the problems above. The current fix is just to play nice with the skylark API and sidestep the new feature.