Comment (by Roland Haas):

Ping, to update LAPACK and BLAS to use FOO_DIR in the same manner as the other external libraries. Namely the directory pointed to is “base” directory and not the “lib” directory.

This would be a breaking change so will need some discussion.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2476/blas-and-lapack-externallibraries-ignore