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feat(ios): cache Swift compiles with Xcode compilation cache #1198

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feat(ios): cache Swift compiles with Xcode compilation cache #1198

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45 changes: 40 additions & 5 deletions .github/workflows/ios.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,7 @@ jobs:
# Runner image updates touch clang even when it hasn't changed, so
# compare its contents instead of its mtime.
CCACHE_COMPILERCHECK: content
XCODE_CAS_DIR: ${{ github.workspace }}/.xcode-cas
AGENT_DEVICE_RUNNER_PATHS: |
~/.agent-device/apple-runner/derived/ios-simulator/*/Build/Products/*
~/.agent-device/apple-runner/derived/ios-simulator/*/.agent-device-runner-cache.json
Expand Down Expand Up @@ -50,13 +51,29 @@ jobs:
- name: Install ccache
run: brew install ccache

- name: Cache ccache
uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
- name: Resolve Xcode version
id: xcode
run: echo "build=$(xcodebuild -version | awk '/Build version/ { print $3 }')" >> "$GITHUB_OUTPUT"

- name: Restore ccache
id: ccache
uses: actions/cache/restore@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
with:
path: .ccache
key: ccache-ios${{ inputs.spm && '-spm' || '' }}-${{ github.run_id }}-${{ github.run_attempt }}
restore-keys: ccache-ios${{ inputs.spm && '-spm' || '' }}-

# Xcode's compilation cache handles the Swift side (ccache can't). Nothing
# prunes it, so the key starts it over whenever Xcode or the native
# dependencies (Podfile.lock) change.
- name: Restore Xcode CAS
id: xcode-cas
uses: actions/cache/restore@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
with:
path: ${{ env.XCODE_CAS_DIR }}
key: xcode-cas-ios${{ inputs.spm && '-spm' || '' }}-xcode-${{ steps.xcode.outputs.build }}-${{ hashFiles('example/ios/Podfile.lock') }}-${{ github.run_id }}-${{ github.run_attempt }}
restore-keys: xcode-cas-ios${{ inputs.spm && '-spm' || '' }}-xcode-${{ steps.xcode.outputs.build }}-${{ hashFiles('example/ios/Podfile.lock') }}-

- name: Install example Pods
if: ${{ !inputs.spm }}
run: bun pods
Expand All @@ -81,22 +98,40 @@ jobs:
run: defaults write com.apple.iphonesimulator ConnectHardwareKeyboard -bool false

- name: Build iOS App
id: build
# RN's USE_CCACHE wrapper silently skips ccache on Xcode 26
# (facebook/react-native#56612), so use Xcode's compiler launcher.
run: |
ccache --zero-stats
bun example:ios:release --extra-params "C_COMPILER_LAUNCHER=$(command -v ccache) CLANG_ENABLE_EXPLICIT_MODULES_WITH_COMPILER_LAUNCHER=YES ONLY_ACTIVE_ARCH=YES"
bun example:ios:release --extra-params "C_COMPILER_LAUNCHER=$(command -v ccache) CLANG_ENABLE_EXPLICIT_MODULES_WITH_COMPILER_LAUNCHER=YES ONLY_ACTIVE_ARCH=YES CLANG_ENABLE_COMPILE_CACHE=NO SWIFT_ENABLE_COMPILE_CACHE=YES COMPILATION_CACHE_CAS_PATH=$XCODE_CAS_DIR"
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ccache --show-stats -v

# Save right after the build, so a failing e2e test doesn't throw away
# fresh compiler cache entries.
- name: Save ccache
if: ${{ !cancelled() && steps.build.outcome != 'skipped' }}
uses: actions/cache/save@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
with:
path: .ccache
key: ${{ steps.ccache.outputs.cache-primary-key }}

- name: Save Xcode CAS
if: ${{ !cancelled() && steps.build.outcome != 'skipped' }}
uses: actions/cache/save@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
with:
path: ${{ env.XCODE_CAS_DIR }}
key: ${{ steps.xcode-cas.outputs.cache-primary-key }}

# The runner depends only on agent-device and Xcode, not on bun.lock.
- name: Resolve agent-device runner cache key
id: agent-device
run: |
pkg=e2e/node_modules/agent-device/package.json
[ -f "$pkg" ] || pkg=node_modules/agent-device/package.json
version=$(jq -r .version "$pkg")
xcode=$(xcodebuild -version | awk '/Build version/ { print $3 }')
echo "key=agent-device-runner-${RUNNER_OS}-${RUNNER_ARCH}-${version}-xcode-${xcode}" >> "$GITHUB_OUTPUT"
echo "key=agent-device-runner-${RUNNER_OS}-${RUNNER_ARCH}-${version}-xcode-${XCODE_BUILD}" >> "$GITHUB_OUTPUT"
env:
XCODE_BUILD: ${{ steps.xcode.outputs.build }}

- name: Restore agent-device runner
id: agent-device-cache
Expand Down
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