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14 changes: 13 additions & 1 deletion .github/workflows/tests.yaml
Original file line number Diff line number Diff line change
Expand Up @@ -50,7 +50,19 @@ jobs:

- name: Install iOS ${{ matrix.sdk }}
if: ${{ matrix.installation_required }}
run: sudo xcodes runtimes install "iOS ${{ matrix.sdk }}"
# Upgrade xcodes if it's too old to decode Apple's runtime list.
# brew update: the image's formula index is stale without it.
# explicit path: sudo's secure_path ignores the job PATH.
run: |
xcodes="$(brew --prefix)/bin/xcodes"
required="2.0.3"
installed="$("$xcodes" version)"
lesser="$(printf '%s\n%s\n' "$required" "$installed" | sort --version-sort | head -1)"
if [ "$lesser" != "$required" ]; then
brew update --quiet
brew upgrade xcodes
fi
sudo "$xcodes" runtimes install "iOS ${{ matrix.sdk }}"

- name: Ensure sim exists
run: |
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