I am encountering a strange "Missing package product '(package name)' error that manifests only in Xcode, but not in the command-line. How should I make the Package.swift to behave the same in both environments?
I encountered the problem while prototyping multiple libraries (products: [.library(...),.library(...)...]) within a single package and wanting to use them from another package. I tried to isolate the problem into two new empty packages and it behaves the same with the new packages as it does with my original – the issue seems to be replicable.
Having the following directory layout :
SOME_ROOT/
MyTool/
Package.swift
...
ProtoLib/
Package.swift
Sources/
MyCore/
MyFlows/
...
The MyTool Package.swift looks like:
// swift-tools-version: 5.9
import PackageDescription
let package = Package(
name: "MyTool",
platforms: [.macOS("13"), .custom("linux", versionString: "1")],
products: [
.library(
name: "MyTool",
targets: ["MyTool"]),
],
dependencies: [
.package(path: "../ProtoLib"),
],
targets: [
.target(
name: "MyTool",
dependencies: [
.product(name: "MyCore", package: "ProtoLib"),
.product(name: "MyFlows", package: "ProtoLib"),
]
),
.testTarget(
name: "MyToolTests",
dependencies: ["MyTool"]),
]
)
The prototyped library ProtoLib package looks like this:
// swift-tools-version: 5.9
import PackageDescription
let package = Package(
name: "ProtoLib",
platforms: [.macOS("13"), .custom("linux", versionString: "1")],
products: [
.library(
name: "MyCore",
targets: ["MyCore"]),
.library(
name: "MyFlows",
targets: ["MyFlows"])
],
targets: [
.target(
name: "MyCore"),
.target(
name: "MyFlows",
dependencies: ["MyCore"])
]
)
The ProtoLib has two libraries that are incubated for the time being under one package (multiple reasons, mostly convenience).
When I build the project using command-line swift everything is fine, the project builds without any issues. When I try to build the MyTool project using Xcode I am getting two errors:
.../MyTool/Package.swift Missing package product 'MyCore'.../MyTool/Package.swift Missing package product 'MyFlows'
What I am doing wrong here?
Versions:
- swift version (command-line):
swift-driver version: 1.87.1 Apple Swift version 5.9 (swiftlang-5.9.0.128.108 clang-1500.0.40.1) Target: arm64-apple-macosx13.0 - XCode: Version 15.0 (15A240d)
(Posted also on Apple Dev forums, as I am not sure whether this is XCode only issue or rather Swift/Swift PM issue. My apologies if this is just Xcode/Apple tooling issue and it does not belong to these forums.)