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Remove needless FIXME. Fixes #2811. - #6052
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In an attempt to fixrust-lang#6052 and rust-lang#4249 this attempts to detect if rustfmt is a rustup proxy which isn't installed, and reports the error message to the user for them to fix. In theory this ought to be memoised but for now it'll do as-is. Future work might be to ask the user if they would like us to trigger the installation (if possible). Signed-off-by: Daniel Silverstone <dsilvers@digital-scurf.org>
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Aug 21, 2026
7055: Install rustfmt if needed during formatting request r=matklad a=kinnison In order to fixrust-lang#6052 and to fixrust-lang#4249 this PR installs `rustfmt` using `rustup` if `rustfmt --help` fails. In theory we ought to memoise the attempts (both the `--help` and the installation) so that we don't keep retrying something which will fail (e.g. if nightly is missing rustfmt), but this is a first-pass for opinions. In order to make it possible to notify the user of what happened, I added a facility for `GlobalStateSnapshot` to send *messages* to the client indicating what happened. There may be a cleaner way to do this as well but I wasn't sure exactly what might be best given this is my first time in this codebase. It may be worth, longer term, working with `rustup` to provide a way to detect a missing component binary since `rustup` returns `1` if `rustfmt` is not installed, which is not ideal. Co-authored-by: Daniel Silverstone <dsilvers@digital-scurf.org>
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r? whomever.