What to gitignore, and how to ensure straight.el always installs same versions?

[patmaddox]

straight.el has been working very nicely for me so far... I have two questions at the moment:

1. What stuff under straight should I gitignore, since it will fetch / build them? I went with:

.emacs.d/straight/build-cache.el
.emacs.d/straight/build/*
.emacs.d/straight/repos/*

2. How can I ensure that straight.el always installs the locked versions of packages? I used straight-freeze-versions to produce a .emacs.d/straight/versions/default.el file. I would assume that (straight-use-package ...) would just pick it up, but it doesn't seem like it. Do I need to add (straight-thaw-versions) after the bootstrap (or after straight-use-package calls) so it always uses the locked versions?