Add TUIST_SWIFT_CONDITIONS for injecting compiler flags at project generation time#6661
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…neration time Introduces a generic mechanism to pass arbitrary Swift active compilation conditions when generating Xcode projects via Tuist. Any target generated through the Tuist Xcode project mode (TUIST_RC_XCODE_PROJECT=true) will pick up the flags automatically. Usage: TUIST_RC_XCODE_PROJECT=true TUIST_SWIFT_CONDITIONS="MY_FLAG" tuist generate PaywallsTester TUIST_RC_XCODE_PROJECT=true TUIST_SWIFT_CONDITIONS="FLAG_A FLAG_B" tuist generate Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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rickvdl
approved these changes
Apr 21, 2026
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
TUIST_SWIFT_CONDITIONSenvironment variable that injects arbitrary Swift active compilation conditions into Tuist-generated Xcode project targetsRevenueCat,RevenueCatUI, andPaywallsTestertargets when using Xcode project mode (TUIST_RC_XCODE_PROJECT=true)Local.xcconfigUsage
Test plan
TUIST_RC_XCODE_PROJECT=true TUIST_SWIFT_CONDITIONS="ENABLE_WORKFLOWS_ENDPOINT" tuist generate PaywallsTesterand verifyENABLE_WORKFLOWS_ENDPOINTappears in build settings for RevenueCat, RevenueCatUI, and PaywallsTester targetstuist generate PaywallsTesterwithout env vars and verify no flags are added🤖 Generated with Claude Code
Note
Low Risk
Build-generation-only change that appends optional compiler flags; low blast radius but could change local build behavior if the env var is set incorrectly.
Overview
Adds a new
TUIST_SWIFT_CONDITIONSenv var to inject additionalSWIFT_ACTIVE_COMPILATION_CONDITIONSat Tuist project-generation time.Introduces
SettingsDictionary.appendingTuistSwiftConditions()and applies it to theRevenueCat,RevenueCatUI, andPaywallsTestertargets so any provided flags are appended to inherited build settings without modifying repo configs.Reviewed by Cursor Bugbot for commit fd0990f. Bugbot is set up for automated code reviews on this repo. Configure here.