Swift Package IndexBuild Information
Successful build of Prelude, reference 0.6.3 (146f53), with Swift 6.3 for macOS (SPM) on 12 Apr 2026 22:23:53 UTC.
Swift 6 data race errors: 0
Build Command
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64Build Log
========================================
RunAll
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Builder version: 4.70.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/wayfair-archive/prelude.git
Reference: 0.6.3
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/wayfair-archive/prelude
* tag 0.6.3 -> FETCH_HEAD
HEAD is now at 146f53b Fix a version for App Store validation (#27)
Cloned https://github.com/wayfair-archive/prelude.git
Revision (git rev-parse @):
146f53bb562859602e14fa632a71b141970cdbd8
SUCCESS checkout https://github.com/wayfair-archive/prelude.git at 0.6.3
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ResolveProductDependencies
========================================
Resolving dependencies ...
{
"identity": ".resolve-product-dependencies",
"name": "resolve-dependencies",
"url": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
"version": "unspecified",
"path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
"traits": [
"default"
],
"dependencies": [
{
"identity": "prelude",
"name": "Prelude",
"url": "https://github.com/wayfair-archive/prelude.git",
"version": "unspecified",
"path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/prelude",
"traits": [
"default"
],
"dependencies": [
]
}
]
}
Fetching https://github.com/wayfair-archive/prelude.git
[1/617] Fetching prelude
Fetched https://github.com/wayfair-archive/prelude.git from cache (0.96s)
Creating working copy for https://github.com/wayfair-archive/prelude.git
Working copy of https://github.com/wayfair-archive/prelude.git resolved at 0.6.3 (146f53b)
warning: '.resolve-product-dependencies': dependency 'prelude' is not used by any target
Found 0 product dependencies
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Build
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Selected platform: macosSpm
Swift version: 6.3
Building package at path: $PWD
https://github.com/wayfair-archive/prelude.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version--6988338F2F200930.txt
[3/13] Compiling Prelude Reducers.swift
/Users/admin/builder/spi-builder-workspace/Sources/Prelude/Reducers.swift:85:27: warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
9 |
10 | /// a struct that wraps a function suitable for passing to the `updateAccumulatingResult:` parameter of `Sequence.reduce(into:_:)`
11 | public struct Reducer<A, X> {
| `- note: 'A' previously declared here
12 | public let updateAccumulatingResult: (inout A, X) -> Void
13 |
:
83 | /// - rhs: another reducer
84 | /// - Returns: a reducer that for each input, first runs `lhs`, then runs `rhs`
85 | public static func <><A, X>(_ lhs: Reducer<A, X>, _ rhs: Reducer<A, X>) -> Reducer<A, X> {
| `- warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
86 | lhs.followed(by: rhs)
87 | }
/Users/admin/builder/spi-builder-workspace/Sources/Prelude/Reducers.swift:85:30: warning: generic parameter 'X' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
9 |
10 | /// a struct that wraps a function suitable for passing to the `updateAccumulatingResult:` parameter of `Sequence.reduce(into:_:)`
11 | public struct Reducer<A, X> {
| `- note: 'X' previously declared here
12 | public let updateAccumulatingResult: (inout A, X) -> Void
13 |
:
83 | /// - rhs: another reducer
84 | /// - Returns: a reducer that for each input, first runs `lhs`, then runs `rhs`
85 | public static func <><A, X>(_ lhs: Reducer<A, X>, _ rhs: Reducer<A, X>) -> Reducer<A, X> {
| `- warning: generic parameter 'X' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
86 | lhs.followed(by: rhs)
87 | }
[4/13] Compiling Prelude Refinements.swift
[5/14] Compiling Prelude Prelude.swift
[6/14] Compiling Prelude Sequence+Prelude.swift
[7/14] Compiling Prelude Predicate.swift
[8/14] Compiling Prelude Monoid.swift
[9/14] Compiling Prelude Nat.swift
[10/14] Compiling Prelude Operators.swift
[11/14] Compiling Prelude Laters.swift
/Users/admin/builder/spi-builder-workspace/Sources/Prelude/Laters.swift:387:31: warning: when calling this function in Swift 4 or later, you must pass a '()' tuple; did you mean for the input type to be '()'?
385 | // Q: When calling this function in Swift 4 or later, you must pass a '()' tuple; did you mean for the input type to be '()'?
386 | // A: No
387 | func f(_ v: @escaping (Void) -> Void) {
| `- warning: when calling this function in Swift 4 or later, you must pass a '()' tuple; did you mean for the input type to be '()'?
388 | upstream { v(()) }
389 | }
[12/14] Compiling Prelude ChangeTracking.swift
/Users/admin/builder/spi-builder-workspace/Sources/Prelude/Laters+Operation.swift:18:20: warning: class 'LaterOperation' must restate inherited '@unchecked Sendable' conformance
16 | }
17 |
18 | public final class LaterOperation<L: Later>: Operation {
| `- warning: class 'LaterOperation' must restate inherited '@unchecked Sendable' conformance
19 | private let upstream: L
20 |
[13/14] Compiling Prelude Laters+Operation.swift
/Users/admin/builder/spi-builder-workspace/Sources/Prelude/Laters+Operation.swift:18:20: warning: class 'LaterOperation' must restate inherited '@unchecked Sendable' conformance
16 | }
17 |
18 | public final class LaterOperation<L: Later>: Operation {
| `- warning: class 'LaterOperation' must restate inherited '@unchecked Sendable' conformance
19 | private let upstream: L
20 |
[14/14] Emitting module Prelude
/Users/admin/builder/spi-builder-workspace/Sources/Prelude/Laters+Operation.swift:18:20: warning: class 'LaterOperation' must restate inherited '@unchecked Sendable' conformance
16 | }
17 |
18 | public final class LaterOperation<L: Later>: Operation {
| `- warning: class 'LaterOperation' must restate inherited '@unchecked Sendable' conformance
19 | private let upstream: L
20 |
/Users/admin/builder/spi-builder-workspace/Sources/Prelude/Reducers.swift:85:27: warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
9 |
10 | /// a struct that wraps a function suitable for passing to the `updateAccumulatingResult:` parameter of `Sequence.reduce(into:_:)`
11 | public struct Reducer<A, X> {
| `- note: 'A' previously declared here
12 | public let updateAccumulatingResult: (inout A, X) -> Void
13 |
:
83 | /// - rhs: another reducer
84 | /// - Returns: a reducer that for each input, first runs `lhs`, then runs `rhs`
85 | public static func <><A, X>(_ lhs: Reducer<A, X>, _ rhs: Reducer<A, X>) -> Reducer<A, X> {
| `- warning: generic parameter 'A' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
86 | lhs.followed(by: rhs)
87 | }
/Users/admin/builder/spi-builder-workspace/Sources/Prelude/Reducers.swift:85:30: warning: generic parameter 'X' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
9 |
10 | /// a struct that wraps a function suitable for passing to the `updateAccumulatingResult:` parameter of `Sequence.reduce(into:_:)`
11 | public struct Reducer<A, X> {
| `- note: 'X' previously declared here
12 | public let updateAccumulatingResult: (inout A, X) -> Void
13 |
:
83 | /// - rhs: another reducer
84 | /// - Returns: a reducer that for each input, first runs `lhs`, then runs `rhs`
85 | public static func <><A, X>(_ lhs: Reducer<A, X>, _ rhs: Reducer<A, X>) -> Reducer<A, X> {
| `- warning: generic parameter 'X' shadows generic parameter from outer scope with the same name; this is an error in the Swift 6 language mode
86 | lhs.followed(by: rhs)
87 | }
Build complete! (3.79s)
Build complete.
{
"dependencies" : [
],
"manifest_display_name" : "Prelude",
"name" : "Prelude",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
],
"products" : [
{
"name" : "Prelude",
"targets" : [
"Prelude"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "PreludeTests",
"module_type" : "SwiftTarget",
"name" : "PreludeTests",
"path" : "Tests/PreludeTests",
"sources" : [
"ChangeTrackingTests.swift",
"Laters+OperationTests.swift",
"LatersTests.swift",
"MonoidTests.swift",
"PredicateTests.swift",
"PreludeTests.swift",
"ReducersTests.swift",
"RefinementsTests.swift",
"SequenceExtensionsTests.swift",
"XCTestManifests.swift"
],
"target_dependencies" : [
"Prelude"
],
"type" : "test"
},
{
"c99name" : "Prelude",
"module_type" : "SwiftTarget",
"name" : "Prelude",
"path" : "Sources/Prelude",
"product_memberships" : [
"Prelude"
],
"sources" : [
"ChangeTracking.swift",
"Laters+Operation.swift",
"Laters.swift",
"Monoid.swift",
"Nat.swift",
"Operators.swift",
"Predicate.swift",
"Prelude.swift",
"Reducers.swift",
"Refinements.swift",
"Sequence+Prelude.swift"
],
"type" : "library"
}
],
"tools_version" : "5.1"
}
Done.