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packer: preserve user Info.plist capabilities - #322
TartanLeGrand wants to merge 3 commits into
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UIRequiredDeviceCapabilities was overwritten with [arm64], dropping values such as metal from the user's Info.plist. Merge arm64 into whatever is declared (array or dictionary form). Also set CFBundleSupportedPlatforms and the default UIDeviceFamily on app extensions, as Xcode does.
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The title clearly and concisely describes the primary change: preserving user-declared Info.plist capabilities during packing. |
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Review comments at @Sources/PackLib/Packer.swift:
- Line 223: Update the extension `UIDeviceFamily` handling so an explicitly
declared non-universal value is rejected or normalized to include both iPhone
and iPad, rather than being retained; update the related test to verify this
behavior.
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App Review requires app extensions to target both iPhone and iPad, whatever the containing app targets. Merge 1 and 2 into any declared UIDeviceFamily and warn on stderr when the declared value was narrower.
rahul05ranjan
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rahul05ranjan
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Reviewed statically — no Swift toolchain on my machine (ARM Linux), so I traced the paths rather than re-running the tests. The test expectations do match the implementation on read-through.
I traced the user plist path first: Planner loads the user's Info.plist via PropertyListSerialization and merges it over the defaults with the user winning (Planner.swift:203), so the packer really was the place where ["arm64"] clobbered declared capabilities — the old call site assigned it unconditionally for applications. The new platformInfoPlist handles both documented forms of the key (array and name-to-Bool dictionary), and the array/dict/no-value paths each line up with the new test cases. LSRequiresIPhoneOS staying application-only, and the extension keys being added, match what Xcode writes.
Two nits on requiredDeviceCapabilities (Packer.swift:244):
- A value that casts to neither form (a plain string, or an array of non-strings) silently becomes
["arm64"]— the user's declared value is dropped with no notice, whileuniversalDeviceFamilydoes warn when it widens. A warning or error for the unrecognized case would keep the diagnostics consistent. - In dictionary form,
"arm64": falseis silently flipped totrue. Defensible since it's a hard requirement, but worth a doc comment because it overrides an explicit user declaration.
One question on the extension widening: the comment says App Review requires extensions to be universal, so a deliberately iPad-only extension (UIDeviceFamily [2]) gets widened to [1, 2] with a warning. Is that an App Store policy you have a reference for, or following Xcode's default of TARGETED_DEVICE_FAMILY = "1,2" for extension targets? The behavior looks right either way; I'm just checking the stated justification.
Heads-up on merge logistics: #323 also modifies this same var info block in pack() (it appends the DT* keys right after). Semantically the two compose cleanly — #323 only fills nil keys, so they can't fight over values — but whichever merges second will need a small rebase.
Warn on stderr when UIRequiredDeviceCapabilities has an unrecognized shape and falls back to ["arm64"], and when "arm64": false is flipped to true. Document that arm64 overrides an explicit declaration, and cite the App Extension Programming Guide for the universal device family requirement.
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Thanks. On the question: it comes from Apple's App Extension Programming Guide (https://developer.apple.com/library/archive/documentation/General/Conceptual/ExtensibilityPG/ExtensionCreation.html). The section "Ensure Your iOS App Extension Works on All Devices" says "You must ensure that your submitted app extension is universal: it must work on iPhone, iPod touch, and iPad", and the same page has an "Important" note: "To pass App Review, you must specify "iPhone/iPad" (sometimes called universal) as the targeted device family for your app extension, no matter which targeted device family you choose for your containing app." It also says the Xcode extension templates are set up for the universal family, so this matches Xcode's default too, though I did not find a source naming the exact build setting value. Caveat: the guide is archived, and that same note announces that a future iOS update would run an extension only on the devices its containing app supports, while recommending universal. If you would rather warn than widen, that is a small change. The code comment now cites the guide. Both nits are in c77ee7a: a |
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What does this PR do?
Stops the packer from discarding Info.plist values the user declared, and gives app extensions the platform keys Xcode gives them.
UIRequiredDeviceCapabilitieswas overwritten with[arm64], so values such asmetalfrom the user's Info.plist were lost.arm64is now merged into what is declared, in either form the key accepts (array of names, or dictionary of name to Bool).CFBundleSupportedPlatforms(derived from the triple since tests: derive CFBundleSupportedPlatforms from the build triple #289) and the mergedUIRequiredDeviceCapabilitiesare now also set on app extensions, and extensions getUIDeviceFamily = [1, 2]when they do not declare one. That is what Xcode writes into an extension's Info.plist.LSRequiresIPhoneOSstays on the application only.The logic moves to
Packer.platformInfoPlist(_:type:triple:)so it can be unit tested.How was it tested?
swift build --product xtoolandswift teston Linux (Podman, Swift 6.4,XTL_CI=1):Test run with 19 tests in 0 suites passed, with 5 new tests: user capabilities kept,arm64as the default,arm64not duplicated, dictionary form merged, keys set on app extensions.--strict: 0 violations.xtool new Helloplus a widget extension, withmetaldeclared in the user Info.plists): in the.ipa, app and extension haveUIRequiredDeviceCapabilities = [arm64, metal],CFBundleSupportedPlatforms = [iPhoneOS]andUIDeviceFamily = [1, 2];LSRequiresIPhoneOSis on the app only.VALID).Not tested:
XcodePacker(generate-xcode-project) is not touched.AI tool usage
How much of this PR was AI-assisted? (check one)
Besides my review, the change was validated by running it (tests, real builds, device installs and App Store Connect uploads where stated above). I will answer review questions myself.
Summary by CodeRabbit
arm64capability metadata while preserving valid existing capability settings.