refactor(tvix): Use SANDBOX_SHELL from environment in CMake r/1597

This makes the configuration work out-of-the-box using CMake in a Nix
shell, rather than having to pass the additional variable to CMake on
the command line.

Change-Id: I04d3cc4f2e5ecf47bf2ee459d5e48588b84ae4dd
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1643
Tested-by: BuildkiteCI
Reviewed-by: kanepyork <rikingcoding@gmail.com>
Reviewed-by: glittershark <grfn@gws.fyi>

0 files changed, 0 insertions, 0 deletions