add buck2 installation into setup.md
Summary: bring buck2 installation back, and scrub any "-DBUCK2=buck2" in our docs, to unblock users from using buck2 Reviewed By: guangy10 Differential Revision: D56540769 fbshipit-source-id: 363e592c17dd2747a693e59d8d6b6d20f43c8451
S
Songhao Jia committed
590cbcee7e2ef3b6af3762b0145294b8e8bd0e6d
Parent: b2c794a
Committed by Facebook GitHub Bot <facebook-github-bot@users.noreply.github.com>
on 4/24/2024, 11:20:27 PM