Catalyst support

[dvkch]

Hi there!

First of all thank you for this amazing and easy to setup library :)

I've been using it for a couple apps using SPM and it works perfectly. I've only encountered one issue: when archiving a catalyst target it fails when running spp:

 /bin/sh -c /Users/user/Library/Developer/Xcode/DerivedData/App-fuvpklgnlnmjljbizexrsmuamxxm/Build/Intermediates.noindex/LicenseList.build/Release-maccatalyst/LicenseList.build/Script-9591152079458176390.sh

sandbox-exec: execvp() of '//Users/user/Library/Developer/Xcode/DerivedData/App-fuvpklgnlnmjljbizexrsmuamxxm/Build/Products/Release/spp' failed: No such file or directory
Command PhaseScriptExecution failed with a nonzero exit code

Indeed, spp exists but in the Release-maccatalyst folder, not Release.

For now I'm gonna do a simple symlink, but if you have any idea on how to fix this that would be amazing :)

EDIT:

it does look awfully similar to https://forums.swift.org/t/package-manager-executable-not-available-when-building-for-platforms-other-than-macos/56279/2, and the solution doesn't seem that simple to setup.

EDIT2:

Because the build folder always changes I had to be a bit creative. I created an aggregate build target, containing the following script, and added it as a dependecy for my main target

# Type a script or drag a script file from your workspace to insert its path.
SIMLINK_DIR=${BUILT_PRODUCTS_DIR/Release-maccatalyst/Release}
[ ! -d "$SIMLINK_DIR" ] && ln -s "$BUILT_PRODUCTS_DIR" "$SIMLINK_DIR"

This is...suboptimal, but at least lets the project archive for catalyst properly

[Kyome22]

@dvkch Thank you for reporting this issue.
I also reproduced the issue.

I found that it is possible to build using the workaround below, but it does not solve the fundamental problem.

@main
struct PrepareLicenseList: BuildToolPlugin {
    // ...

    // This command works with the plugin specified in `Package.swift`.
    func createBuildCommands(context: PluginContext, target: Target) async throws -> [Command] {
+       var executablePath = try context.tool(named: "spp").path
+           .removingLastComponent()
+           .removingLastComponent()
+           .appending(["Debug-maccatalyst", "spp"])
        return [
            makeBuildCommand(
+               executablePath: executablePath,
                sourcePackagesPath: try sourcePackages(context.pluginWorkDirectory),
                outputPath: context.pluginWorkDirectory
            )
        ]
    }
}

https://github.com/cybozu/LicenseList/blob/support-catalyst/Plugins/PrepareLicenseList/main.swift

#if targetEnvironment(macCatalyst) preprocessor also doesn't work. X(

[dvkch]

Oh! I didn't know you could modify the build commands like this, that's good to know! But as you say, the underlying issue is still there