[6.2][PackageModel] Toolchain: A few fixes for features supported by Swift compiler #8762
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Explanation:
swift package migrate
is broken when used with older toolchains.-print-supported-features
flag used to output "enabled_in" version as an integer (major only).JSON.get
would throw if the key couldn't be found, let's handle that gracefully for an optional "optional features" section.Main Branch PR: [PackageModel] Toolchain: A few fixes for features supported by Swift compiler #8761
Risk: Low (only
swift package migrate
is affected by this changes).Resolves: rdar://152533205
Reviewed By: @dschaefer2
Testing: Updated existing tests in the suite, added new test-cases.