rust-toolchain/scripts/update-revs.sh

#!/bin/bash

cd -- "$(dirname -- "${BASH_SOURCE[0]}")/.."

if ! git diff-index --quiet HEAD; then
    echo "Not running update-revs.sh because git working directory is dirty" >&2
    exit 1
fi

base=$(git rev-parse HEAD)
push=()

for rev in 1.{0..70}.0 stable beta nightly; do
    echo "Updating $rev branch"
    git checkout --quiet "$base"
    git branch --quiet --delete --force $rev &>/dev/null || true
    sed -i "s/required: true/required: false\n    default: $rev/" action.yml
    git add action.yml
    git commit --quiet --message "toolchain: $rev"
    git checkout --quiet -b $rev
    push+=("$rev:refs/heads/$rev")
done

for tool in clippy miri; do
    echo "Updating $tool branch"
    git checkout --quiet --detach nightly
    git branch --quiet --delete --force $tool &>/dev/null || true
    sed -i "/required: false/{N;s/\n$/\n    default: $tool\n/}" action.yml
    git add action.yml
    git commit --quiet --message "components: $tool"
    git checkout --quiet -b $tool
    push+=("$tool:refs/heads/$tool")
done

git checkout --quiet "$base"

echo "git push origin --force-with-lease ${push[@]}"