Do not invoke dune at all if --fallback-read-dot-merlin
flag is on
#1173
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Fix #859.
For background, internally at Meta we use buck2 to build ocaml code, and we have a script to automatically generate a .merlin file based on the build artifacts. I'm not asking for a buck2 integration here. I'm simply fix the issue that blocks us from switching away from the long dead
ocaml-language-server
.I find that the flag doesn't work if the environment does not have dune installed, because it will unconditionally run some dune command before even checking the
--fallback-read-dot-merlin
flag. This PR moves the check earlier, so that when the flag is on, it fully bypasses the dune workflow.