and migrate unnecessary packages out of propagatedBuildInputs. This
shrinks the whole package by ~65%.
/nix/store/wdhqcxhp45p287zknw3r0cv7pxgp6r14-homeassistant-2021.2.0 696.7M
/nix/store/1v20wdqfn4v1nf3v2jmlkx89q18n8fzx-homeassistant-2021.2.0 250.8M