Use compiler-info.json to find runtime and bsc

[nojaf]

Using the new information found in rescript-lang/rescript#7889

[zth]

This looks good to me! Only 2 things I'd want to make sure is checked is that:

• It gracefully falls back to the old code path when the compiler info json does not exist (it seems to do that)
• It doesn't try and read any files in the hot path (for each incremental compilation, not when setting the compilation up at the first incremental only)

And to me it looks like both of those are fulfilled, right?

[nojaf]

Good questions:

• In case of the runtime (which is on the hot path), findRuntimeCached is used and that discovery logic is only ever ran once. Including the file read.
• For bsc.exe, it is only called when projectRootState is not available in openedFile so it will only read the json file there once.
• The old code is still in place as a fallback.

[nojaf]

@hackwaly problem is here!
Sorry about this, copy paste error

[hackwaly]

Shall we release a hotfix for this?

[nojaf]

There should be a new prerelease for this, please let me know how it goes.