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setup-rust-toolchain
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Always downgrade the registry protocol to supported versions 

Not all version support the new sparse protocol. While old versions
ignore the value, 1.66 and other fail due to unstable features.

If such a version is detected, always downgrade to the git protocol.

This fixes running the action twice with different toolchains. Even if
the first install uses something which supports "sparse", the second run
can still downgrade it to "git".

Closes #12
This commit is contained in:
Jonas Bushart 2023-02-21 21:02:41 +00:00
parent 9fa7c33ef0
commit f010a58728
1 changed files with 10 additions and 9 deletions
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19
action.yml
View File

@ -85,6 +85,9 @@ runs:
if [[ ! -v CARGO_UNSTABLE_SPARSE_REGISTRY ]]; then
echo "CARGO_UNSTABLE_SPARSE_REGISTRY=true" >> $GITHUB_ENV
fi
if [[ ! -v CARGO_REGISTRIES_CRATES_IO_PROTOCOL ]]; then
echo "CARGO_REGISTRIES_CRATES_IO_PROTOCOL=sparse" >> $GITHUB_ENV
fi
shell: bash
- name: "Install Rust Problem Matcher"
run: echo "::add-matcher::${{ github.action_path }}/rust.json"
@ -126,17 +129,15 @@ runs:
echo "cachekey=$(echo $DATE$HASH | head -c12)" >> $GITHUB_OUTPUT
shell: bash
# Copied from dtolnay/rust-toolchain and adapted
# https://github.com/dtolnay/rust-toolchain/blob/25dc93b901a87e864900a8aec6c12e9aa794c0c3/action.yml#L100-L108
- name: "Enable cargo sparse registry on stable"
- name: "Downgrade registry access protocol when needed"
run: |
# except on 1.66 and 1.67, on which it is unstable
# Not all 1.68.0-nightly versions support it either
# Not all versions support setting CARGO_REGISTRIES_CRATES_IO_PROTOCOL
# On versions 1.66, 1.67, and 1.68.0-nightly the value "sparse" is still unstable.
# https://github.com/dtolnay/rust-toolchain/pull/69#discussion_r1107268108
if [[ ! -v CARGO_REGISTRIES_CRATES_IO_PROTOCOL ]]; then
if echo "${{steps.versions.outputs.rustc-version}}" | grep --invert --quiet '^rustc \(1\.6[67]\.\|1\.68\.0-nightly\)'; then
echo "CARGO_REGISTRIES_CRATES_IO_PROTOCOL=sparse" >> $GITHUB_ENV
fi
# If we detect an incompatible value, set it to "git" which is always supported.
if [[ "${{steps.versions.outputs.rustc-version}}" =~ ^rustc\ (1\.6[67]\.|1\.68\.0-nightly) && "${CARGO_REGISTRIES_CRATES_IO_PROTOCOL}" == "sparse" ]]; then
echo "Downgrade cargo registry protocol to git"
echo "CARGO_REGISTRIES_CRATES_IO_PROTOCOL=git" >> $GITHUB_ENV
fi
shell: bash