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Streamline config parsing method #144301

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@Shourya742 Shourya742 commented Jul 22, 2025 •
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This PR should be merged after: #144126 (as this PR contains few of it commits )

This PR streamlines the parse_inner function of the config:

  1. It moves the TOML build-specific parsing logic to apply_build_config, aligning with how other TOML section-specific modules are structured.
  2. Currently, the config fields in parse_inner must be initialized in a specific order effectively following a DAG. This PR maintains that ordering (which we plan to change later), but the new structure makes the initialization order clearer and easier to follow.
  3. Methods are being moved into their respective modules to better localize their scope and reduce cross-module dependencies.

r? @Kobzol

@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) labels Jul 22, 2025
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rustbot commented Jul 22, 2025

This PR modifies src/bootstrap/src/core/config.

If appropriate, please update CONFIG_CHANGE_HISTORY in src/bootstrap/src/utils/change_tracker.rs.

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@Shourya742 Shourya742 force-pushed the 2025-06-22-move-build-toml-parsing-to-build-config branch from e1a4d2a to db3b43d Compare July 22, 2025 12:28
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Kobzol commented Jul 22, 2025

Can be rebased now.

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bors commented Jul 22, 2025

☔ The latest upstream changes (presumably #144294) made this pull request unmergeable. Please resolve the merge conflicts.

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This PR includes the following changes:
24b495d 
1. Moves TOML build parsing into a separate module.
2. Corrects the ordering of `apply_*_config` method calls.
3. Moves download logic specific to `toml_config` into its own module.
4. Updates tests to align with the correct behavior.
@Shourya742
move llvm_enzyme out of rust config, so that llvm_config initializati…
121be5a 
…on is preferred
@Shourya742 Shourya742 force-pushed the 2025-06-22-move-build-toml-parsing-to-build-config branch from db3b43d to 121be5a Compare July 22, 2025 17:06
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Kobzol commented Jul 22, 2025

I went through this and seeing how the code is structured now helped me realize some issues with how we currently parse Config. I did some experiments based on your branch and I'd like to propose a slightly different structuring here. We can discuss it during our next call.

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bors commented Jul 23, 2025

☔ The latest upstream changes (presumably #144360) made this pull request unmergeable. Please resolve the merge conflicts.

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