[SR-13259] [SwiftPM] TargetSourcesBuilder is slow when source files are listed #55699
Labels
bug
A deviation from expected or documented behavior. Also: expected but undesirable behavior.
performance
Additional Detail from JIRA
md5: 95d44aa1dd22cea56e92d19c6e9d649b
Issue Description:
It took over 12 minutes to start building in the example described at https://forums.swift.org/t/scaling-swift-package-manager-builds/38535.
$ git clone git@github.com:firebase/firebase-ios-sdk.git
$ git checkout 0a290a898
$ swift build
The workaround is in the next commit - ab7e4bad1
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