`config.home.homeDirectory` is never set, meaning that when this builds
in CI it just uses the $HOME of the buildkite agent that's running,
causing it to almost always rebuild on new changes - I'm never going to
have a username on a system other than `grfn`, so this is fine to just
hardcode.
Change-Id: I920a0c546f4c06d0429534d116465e8f732218e7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3495
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
Reviewed-by: tazjin <mail@tazj.in>
4c4aa8e413
