miri-script: use --remap-path-prefix to print errors relative to the right root #3798
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All right, this seems to be working now. @rust-lang/miri what do you think? |
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Oh, looking at the Miri thing again we could also use a totally different approach... namely, to set this as a per-package variable in the profile, which will also avoid applying it to dependencies. |
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| - name: Install nightly toolchain | ||
| run: rustup toolchain install nightly --profile minimal | ||
| shell: bash |
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I suppose more than anything I'm confused that we didn't need this before.
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We now need this because miri-script needs nightly because it picks up the .config/cargo.toml which uses nightly features.
Previously we didn't need this because miri-script was built with stable, and then it used rustup-toolchain-install-master to install the toolchain used for Miri.
No objections. I trip over the path prefixes more in the rust-lang/rust tree than this repo, but still a nice change. |
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Okay let's land this then. :) |
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☀️ Test successful - checks-actions |
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Inspired by rust-lang/rust-clippy#13232, this makes it so that when cargo-miri fails to build,
./miri checkwill print errors with paths likecargo-miri/src/setup.rs. That means we can get rid of the miri-symlink-hacks and instead tell RA to just always invoke the./miri clippyscript just once, in the root.This means that we can no longer share a target dir between cargo-miri and miri as the RUSTFLAGS are different to crates that are shared in the dependency tree need to be built twice with two different flags.
miri-scripthence now has to set the MIRI environment variable to tell thecargo miri setupinvocation where to find Miri.I also made it so that errors in miri-script itself are properly shown in RA, for which the
./mirishell wrapper needs to set the right flags.