SPM build tool plugins (e.g. SwiftLint) not emitted as PBXBuildToolPlugin/buildToolPlugins

What happened?

1. Add a build-tool plugin package to the project packages (example in Tuist/Package.swift).
2. Add the plugin as a target dependency, e.g.: .package(product: “SwiftLintBuildToolPlugin”, type: .plugin) and include it in a target dependency (.package(product: “…”, type: .plugin))
3. Run tuist generate.
4. Open the generated Xcode project and build a target that should use the plugin.
5. Inspect generated project file *.xcodeproj/project.pbxproj.

How do we reproduce it?

1. Add a build-tool plugin package to the project packages (example in Tuist/Package.swift).
2. Add the plugin as a target dependency, e.g.: .package(product: “SwiftLintBuildToolPlugin”, type: .plugin) and include it in a target dependency (.package(product: “…”, type: .plugin))
3. Run tuist generate.
4. Open the generated Xcode project and build a target that should use the plugin.
5. Inspect generated project file *.xcodeproj/project.pbxproj.

Error log

1) Target block shows a PBXTargetDependency referencing the plugin product:

<ANON_TARGET> /* PBXNativeTarget / = { isa = PBXNativeTarget; buildPhases = ( / Sources /, / Resources /, / Frameworks /, ); buildRules = ( ); dependencies = ( / … /, 0B69D60995D9AD7F00480AFF / PBXTargetDependency */, // plugin dependency entry ); name = “<ANON_TARGET>”; };

0B69D60995D9AD7F00480AFF /* PBXTargetDependency / = { isa = PBXTargetDependency; productRef = 5F9742E781E0E4A2DC0120DD / SwiftLintBuildToolPlugin */; };

2) Package product dependency exists:

5F9742E781E0E4A2DC0120DD /* SwiftLintBuildToolPlugin */ = { isa = XCSwiftPackageProductDependency; productName = “plugin:SwiftLintBuildToolPlugin”; … };

Expected but missing:

• PBXBuildToolPlugin objects section mapping plugin product -> PBXBuildToolPlugin
• buildToolPlugins = ( /* SwiftLintBuildToolPlugin */ ) entries inside the PBXNativeTarget block

Consequence: Xcode does not execute plugin (no plugin run printed in build logs; generated artifacts absent).

macOS version

25.2.0

Tuist version

4.131.1

Xcode version

26.2