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emit cargo metadata duiring build scripts to avoid outdated buildscript outputs #6743

Merged
merged 2 commits into from
Apr 14, 2023
Merged

emit cargo metadata duiring build scripts to avoid outdated buildscript outputs #6743

merged 2 commits into from
Apr 14, 2023

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pascalkuthe
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While triaging issues I often noticed that the revision reported by helix --version if often wrong. I finally found the reason for this: The build.rs script that extracts the HEAD branch by calling git is not automatically rerun so if you build helix then checkout/merge a branch/revision that doesn't touch helix-loader (which doesn't see that much activity compared to the rest of the editor) and rebuild then build script will not be rerun andhelix --version will report the old (incorrect) revision.

I made the build script emit an appropriate cargo:rerun-if-changed= so that it is rerun if HEAD changes to fix that.

@pascalkuthe pascalkuthe added C-bug Category: This is a bug E-easy Call for participation: Experience needed to fix: Easy / not much S-waiting-on-review Status: Awaiting review from a maintainer. labels Apr 13, 2023
@pascalkuthe pascalkuthe changed the title rebuild on revision change rebuild on git revision change Apr 13, 2023
the-mikedavis
the-mikedavis previously approved these changes Apr 13, 2023
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@pascalkuthe pascalkuthe requested a review from dead10ck April 13, 2023 16:56
dead10ck
dead10ck requested changes Apr 14, 2023
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Oh shoot, I had stumbled across this myself a long time ago and then totally forgot to make a PR! I think we also have to rerun if basically any file changes inside runtime/grammars/sources, or the languages.toml file too.

@pascalkuthe
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pascalkuthe commented Apr 14, 2023 •
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I looked into adding this. We are already rebuilding on languages.toml changes since we include_bytes! those which is a compiler builtin that handles invalidation correctly.

I added the metadata for runtime/grammars/sources. In the process I noticed that the simple approach I had taken to git metadata before didn't quite work and I didn't consider that HEAD is (usually) a git symbolic-ref and that .git can also be a reference (for detached work trees which I am even using myself). Considering that I heavily contribute to gitoxide I really should know better but it slipped me by. The new solution is much more robust. Sorry about that.

This probably needs a fresh review as a result

@pascalkuthe pascalkuthe changed the title rebuild on git revision change emit correct cargo metadata duiring build scripts to avoid out of state buildscript results Apr 14, 2023
@pascalkuthe pascalkuthe changed the title emit correct cargo metadata duiring build scripts to avoid out of state buildscript results emit cargo metadata duiring build scripts to avoid outdated buildscript outputs Apr 14, 2023
dead10ck
dead10ck approved these changes Apr 14, 2023
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Ahh, that makes sense, thanks! This looks good to me.

helix-loader/build.rs
.ok()
.filter(|output| output.status.success())
.and_then(|x| String::from_utf8(x.stdout).ok())
else{ return; };
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Does cargo fmt work on build scripts?

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yes but rustfmt currently ignores let .. else (leaves it unchanged) altough that will hopefully be fixed in the not-so-distant future

@the-mikedavis the-mikedavis merged commit 896404c into helix-editor:master Apr 14, 2023
@pascalkuthe pascalkuthe deleted the update-git-rev branch April 14, 2023 15:00
Triton171 pushed a commit to Triton171/helix that referenced this pull request Jun 18, 2023
@pascalkuthe @Triton171
emit cargo metadata duiring build scripts to avoid outdated buildscri…
bf3f6a1 
…pt outputs (helix-editor#6743)

* rebuild on revision change
* rerun grammar build if grammars change
wes-adams pushed a commit to wes-adams/helix that referenced this pull request Jul 4, 2023
@pascalkuthe @wes-adams
emit cargo metadata duiring build scripts to avoid outdated buildscri…
fdefb16 
…pt outputs (helix-editor#6743)

* rebuild on revision change
* rerun grammar build if grammars change
smortime pushed a commit to smortime/helix that referenced this pull request Jul 10, 2024
@pascalkuthe
emit cargo metadata duiring build scripts to avoid outdated buildscri…
524852b 
…pt outputs (helix-editor#6743)

* rebuild on revision change
* rerun grammar build if grammars change
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@the-mikedavis the-mikedavis the-mikedavis approved these changes

@dead10ck dead10ck dead10ck approved these changes

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