Regarding #3, my approach to solve problems like this is to make a custom repository rule which creates the desired symlinks. The repository rule can invoke ext

Regarding #3, my approach to solve problems like this is to make a custom repository rule which creates the desired symlinks. The repository rule can invoke external programs or examine the environment as necessary to figure out how this should be created. Basically, you create a repository rule that symlinks your $PROJECT_ROOT/links/GCC/vX.Y.Z/ to $repo/... somewhere, and then generates a BUILD file for the repository. Writing your own repository rule is not especially difficult and they do have a lot of power not available to ordinary rules. This is the API that you can use from within repository rules--you can see that it lets you run arbitrary programs, create files and symlinks, download files, etc. https://bazel.build/rules/lib/repository_ctx https://bazel.build/rules/lib/repository_ctx