ocaml / ocaml/dune

Issues with --action-stdxxx-on-success

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#4,531 2 comments 0 reactions 0 assignees View on GitHub

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build cli enhancement
Dominant language
OCaml
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Description

The current implementation of this option has a couple of problem. It operates at the level of a single (run ...) rather than at the level of whole actions. As a result:

  • it has no effect on builtin actions such as (echo ...)
  • the behaviour is somewhat unintuitive for actions with multiple (run ...)

The motivation for the current behaviour was to get something up and running quickly that was enough for Jane Street use case where this option is needed now. However, we should change it to operate at the level of whole actions to fix this issues. See also #4435.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the implementation and entry point for --action-stdxxx-on-success, then read the related discussion in #4435. Trace how the option currently handles individual (run ...) forms versus whole actions. Done means builtin actions are affected and actions containing multiple (run ...) forms have consistent whole-action behavior.

Written by the indexing model from the issue text.

Assessment

Tech stack
ocaml
Domain
build-system
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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