WORKSPACE snippet to use gcc-toolchain about gcc-toolchain

[tetsuok]

I'm tempted to just add this snippet as part of the releases with the top-level README.md pointing to the link of the latest release.

That sounds good to me.

[f0rmiga]

This is probably the missing piece of #75 after adding bcc2a04 (which triggered the blog post https://blog.aspect.dev/hermetic-c-toolchain).

I'm tempted to just add this snippet as part of the releases with the top-level README.md pointing to the link of the latest release.

[f0rmiga]

I agree we should be clear about the extra flags required, they are indeed non-obvious. Before finding BAZEL_DO_NOT_DETECT_CPP_TOOLCHAIN buried somewhere deep into the source code, I used to set CC=/bin/false to ensure the toolchain resolution was being enforced, but it started to break some IDEs based on other users reporting directly to me (I haven't experienced it myself).