Include missing tools in the manifest and mark them as unavailable #53715
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This PR changes the
build-manifest
tool to always include the missing components in the manifest, marking them asavailable = false
. This blocks rustup from updating to a different nightly if the component is installed.The code builds and should be correct, but I don't know a way to test the changes locally.
r? @alexcrichton
cc @kennytm rust-lang/rustup#1486