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Add comments explaining the rustfmt installation dance.

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This commit is contained in:
Dan Gohman
2018-05-31 09:32:02 -07:00
parent f48c1d4f89
commit 35f2cae00c
1 changed files with 7 additions and 0 deletions
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7
.travis.yml
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@@ -17,13 +17,20 @@ install:
- pip3 install --user --upgrade mypy flake8 - pip3 install --user --upgrade mypy flake8
- mypy --version - mypy --version
before_script: before_script:
# If an old version of rustfmt from cargo is already installed, uninstall
# it, since it can prevent the installation of the new version from rustup.
- cargo uninstall rustfmt || true - cargo uninstall rustfmt || true
- cargo install --list - cargo install --list
# If we're testing beta or nightly, we still need to install the stable
# toolchain so that we can run the stable version of rustfmt.
- rustup toolchain install stable - rustup toolchain install stable
# Install the stable version of rustfmt.
- rustup component add --toolchain=stable rustfmt-preview - rustup component add --toolchain=stable rustfmt-preview
- rustup component list --toolchain=stable - rustup component list --toolchain=stable
- rustup show - rustup show
- rustfmt +stable --version || echo fail - rustfmt +stable --version || echo fail
# Sometimes the component isn't actually ready after being installed, and
# rustup update makes it ready.
- rustup update - rustup update
- rustfmt +stable --version - rustfmt +stable --version
script: ./test-all.sh script: ./test-all.sh