rust/rustup-toolchain
2019-12-01 10:20:16 +01:00

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#!/bin/bash
set -e
# Manages a rustup toolchain called "miri".
#
# All commands set "miri" as the override toolchain for the current directory,
# and make the `rust-version` file match that toolchain.
#
# USAGE:
#
# ./rustup-toolchain: Update "miri" toolchain to match `rust-version` (the known-good version for this commit).
#
# ./rustup-toolchain HEAD: Update "miri" toolchain and `rust-version` file to latest rustc HEAD.
#
# ./rustup-toolchain $COMMIT: Update "miri" toolchain and `rust-version` file to match that commit.
# Determine new commit.
if [[ "$1" == "" ]]; then
NEW_COMMIT=$(cat rust-version)
elif [[ "$1" == "HEAD" ]]; then
NEW_COMMIT=$(git ls-remote https://github.com/rust-lang/rust/ HEAD | cut -f 1)
else
NEW_COMMIT="$1"
fi
echo "$NEW_COMMIT" > rust-version
# Check if we already are at that commit.
CUR_COMMIT=$(rustc +miri --version -v | egrep "^commit-hash: " | cut -d " " -f 2)
if [[ "$CUR_COMMIT" == "$NEW_COMMIT" ]]; then
echo "miri toolchain is already at commit $CUR_COMMIT."
rustup override set miri
exit 0
fi
# Cleanup.
cargo +nightly clean # Use nightly cargo as miri toolchain might be broken.
rustup toolchain uninstall miri
# Install and setup new toolchain.
rustup-toolchain-install-master -n miri -c rust-src -c rustc-dev -- "$NEW_COMMIT"
rustup override set miri