Telling tlmgr to use 2021 repo for texlive and installing packages to speed up knitting.
Telling tlmgr to use 2021 repo for texlive and installing packages to speed up knitting.

Issue #3338

berkeley-dsep-infra/datahub,ryanlovett/datahub,ryanlovett/datahub,ryanlovett/datahub,berkeley-dsep-infra/datahub,berkeley-dsep-infra/datahub