Why is the github suggested run configuration a lot slower than the one in the wiki? It's 7x slower

[bonparker]

Question

From:
(Takes 16 seconds)
(From the MD book wiki as of 11/07/2026)
run: |
tag=$(curl 'https://api.github.com/repos/rust-lang/mdbook/releases/latest' | jq -r '.tag_name')
url="https://github.com/rust-lang/mdbook/releases/download/${tag}/mdbook-${tag}-x86_64-unknown-linux-gnu.tar.gz"
mkdir mdbook
curl -sSL $url | tar -xz --directory=./mdbook
echo pwd/mdbook >> $GITHUB_PATH

To:
(Takes 1 minute 53 seconds)
(Suggested by github as the default yaml file for setting up an MD Book action as of 11/07/2026)
run: |
curl --proto '=https' --tlsv1.2 https://sh.rustup.rs -sSf -y | sh
rustup update
cargo install --version ${MDBOOK_VERSION} mdbook

Version

[Pistonight]

The first one downloads the binary from mdbook release and the second one sets up rust to compile it from source

[bonparker]

Thanks - but I guess the question is - why is it set up in a way that takes much longer to run when pulling from the default github yaml file template. What's the benefit of having it that way? If none, could it be updated on that yaml file to be the faster command as that will greatly reduce the amount of time the action takes to run for everyone.