Write manifest of pre-build rule monitored files#11776
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sheaf wants to merge 1 commit intohaskell:masterfrom
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Write manifest of pre-build rule monitored files#11776sheaf wants to merge 1 commit intohaskell:masterfrom
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After executing pre-build rules for a component, `cabal-install` now
writes a manifest file to the `pre-build-monitors` file in the
component's build directory.
This manifest contains:
1. The files that are monitored by the pre-build rules computation.
When any of these change, we need to re-run the computation of
pre-build rules.
2. File dependencies of the pre-build rules. When any of these change,
we need to re-run rules (the recompilation checking logic will take
care to only re-run stale rules).
3. Rule outputs, i.e. files generated by the pre-build rules.
Writing this information to a file makes it available to external tools
such as HLS, without needing to link against the Cabal library.
This allows external tools to know when to re-run the pre-build rules.
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Companion to HLS PR #4923.
After executing pre-build rules for a component,
cabal-installnow writes a manifest file to thepre-build-monitorsfile in the component's build directory.This manifest contains:
Writing this information to a file makes it available to external tools such as HLS, without needing to link against the Cabal library. This allows external tools to know when to re-run the pre-build rules.
Template Α: This PR modifies behaviour or interface
Include the following checklist in your PR: