tree 3399ea3f7e9807a83998c5d96fe87cfb1a374b6f
parent b07525cbb15352caefbe2f23697250cecd984430
author Ignas Anikevicius <240938+aignas@users.noreply.github.com> 1718770138 +0900
committer Ignas Anikevicius <240938+aignas@users.noreply.github.com> 1718801781 +0900

fix(toolchain): disable exec toolchain by default (#1968)

This makes the exec tools toolchain disabled by default to prevent
toolchain resolution
from matching it and inadvertently pulling in a dependency on the
hermetic runtimes.
While the hermetic runtime wouldn't actually be used (precompiling is
disabled
by default), the dependency triggered downloading of the runtimes, which
breaks
environments which forbid remote downloads they haven't vetted (such a
case is
Bazel's own build process).

To fix this, a flag is added to control if the exec tools toolchain is
enabled or not.
When disabled (the default), the toolchain won't match, and the remote
dependency isn't
triggered.

Fixes #1967.

Cherry-pick of cf1f36dd.

---------

Co-authored-by: Richard Levasseur <rlevasseur@google.com>