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Port rewatch to OCaml - #8780

Merged

cknitt merged 93 commits into

compiler-request-isolationfrom

rewatch-ocaml-port

Oct 15, 2026

Merged

Port rewatch to OCaml#8780
cknitt merged 93 commits into
compiler-request-isolationfrom
rewatch-ocaml-port

Commits on Oct 14, 2026
- Rewrite rewatch in OCaml
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- Use the parent workspace's settings for OCaml rewatch member builds
  
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- Name OCaml rewatch namespaces with an entry like Rust rewatch
  
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- Handle SIGHUP and SIGQUIT in OCaml rewatch
  
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- Print plain OCaml rewatch usage errors when stderr is not a terminal
  
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- Support OCaml rewatch locks on filesystems without hard links
  
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- Add OCaml rewatch changelog fragments and remove its task brief
  
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- Test OCaml rewatch signal handling during a js-post-build hook
  
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- Accept only build-system executables as rewatch lock owners
  
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- Separate OCaml rewatch config diagnostics from warnings like Rust
  
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- Compare the OCaml rewatch CLI help exactly in cli_help
  
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- Remove the Rust unit-test mapping check from OCaml rewatch CI
  
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- Add libuv's externally maintained parts to the rewatch notices
  
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- Copy the Cargo-built rewatch to rescript-rust.exe again
  
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- Clean up small OCaml rewatch review findings
  
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- Rewrite the OCaml rewatch docs for maintainers
  
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- Reject non-standard JSON in rescript.json in OCaml rewatch
  
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- Name fields and accepted values in OCaml rewatch config errors
  
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- Honor -v for OCaml rewatch format and compiler-args
  
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- Restore Rust rewatch's project-context debug wording in OCaml rewatch
  
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- Describe created project contexts in plain words in both rewatches
  
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- Tighten OCaml rewatch process lookups on Windows
  
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- Harden the OCaml rewatch Windows process launcher
  
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- Clean up stale artifacts once for cleaned packages
  
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- Track removed modules once per attempt
  
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- Compare graph nodes when carrying dirtiness forward
  
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- Simplify incremental preparation
  
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- Move the build kind into Build_report
  
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- Define build step labels once in Build_report
  
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- Remove unreachable build failure handling
  
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- Drop redundant once-guards in Build_attempt
  
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- Simplify package plans and preparation
  
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- Require cleanup inventories in Build_artifacts.cleanup_stale
  
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- Split parser and compiler flags
  
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- Reuse Compiler_info.clean_package in clean
  
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- Reword session comments in build.ml
  
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- Report format's package name mismatch once
  
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- Simplify watch snapshot comparison and walk
  
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- Share watcher rebuild and reconciliation steps
  
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- Simplify CLI argument predicates and evaluation
  
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- Reuse workspace_config_for in format's scope check
  
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- Remove config_types.mli, which duplicated config_types.ml
  
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- Split Config.load into named decoders
  
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- Simplify source discovery options
  
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- Share watch scope's source directory check
  
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- Remove small duplications in config, watch and traversal code
  
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- Create native watchers by refreshing an empty watcher
  
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- Remove termination-signal deferral from rewatch-ocaml
  
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- Drop the unused root_reaped parameter of signal_process_tree
  
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- Simplify fail_launch in process_child
  
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- Remove parameters that never vary in rewatch-ocaml
  
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- Remove unused exports and trivial wrappers in rewatch-ocaml
  
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- Remove unreachable defensive errors in rewatch-ocaml
  
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- Share the lock acquisition loop of with_build and with_watch
  
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- Reject cyclic graphs in run_dependency_graph
  
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- Remove diagnostic bench scripts
  
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- Remove orphaned Windows job stub check
  
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- Simplify run.sh setup and teardown
  
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- Drop Package_traversal.For_test
  
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- Factor repeated runs out of check_command_validation.sh
  
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- Consolidate configuration unit tests
  
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- Drop run.sh cases duplicated by the shared suite
  
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- Drop output tests that restate message formats
  
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- Drop CLI precedence tests duplicated by command validation
  
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- Drop self-checks from check_verbose_output.sh
  
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- Skip rewatch parity steps on the oldest-OCaml CI job
  
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- Run the Rust rewatch shared suite on linux-arm64 only
  
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- Ignore obsolete jsx.mode and jsx.v3-dependencies in OCaml rewatch
  
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- Explain the process group escalation's PID reuse window
  
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- Don't let OCaml rewatch watch exit wait for another build's lock
  
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- Port Rust rewatch's option descriptions to the OCaml CLI help
  
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- Poll for watch handles instead of sleeping in OCaml rewatch tests
  
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- Don't republish the .cmi after an implementation with an interface
  
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- Restore with_lock in OCaml rewatch for OCaml 5.0
  
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- Clear a killed watcher's build lock in the Windows command checks
  
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- Name the failing command in OCaml rewatch's focused tests under bash
  
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- Show the bytes behind Windows output mismatches in OCaml rewatch tests
  
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- Don't format-check an LF fixture in OCaml rewatch's focused tests
  
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- Report why OCaml rewatch's watcher exits, as Rust does
  
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- Lock the test proxy's call log so Windows appends don't collide
  
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- Lock a separate file for the test proxy's call log
  
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- Only warn when Rust's inverted watch filter doesn't reproduce
  
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- Use the same, longer waits on every platform in rewatch tests
  
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- Test OCaml rewatch's module names against Rust's new cases
  
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- Remove a partial destination when an OCaml rewatch copy fails
  
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- Print watcher output when the dependency-fallback test times out
  
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- Rehash files modified just before a watch snapshot
  
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- Test that the build schema lists OCaml rewatch's config fields
  
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- Share the OCaml rewatch test scripts' wait and link helpers
  
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- Drop the package-specs rebuild from OCaml rewatch's Rust differences
  
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- Test removing a deleted dependency source's output on a package-specs change
  
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- Watch for dependencies missing from an ancestor's node_modules
  
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- Resolve dot-relative PPX paths against the package directory
  
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Commits

Commits on Oct 14, 2026