Fix two small issues with handling of plugin triples

- We were not stringently using version-less triples in all comparisons
- We were not merging the supported triples of all executable info entries into the final `toolNamesToTriples` which could lead to incorrect errors about unsupported platforms

rdar://101096803

Author: neonichu

Sources/SPMBuildCore/BinaryTarget+Extensions.swift

@@ -74,13 +74,14 @@ extension BinaryTarget {
             // Filter supported triples with versionLessTriple and pass into
             // ExecutableInfo; empty if non matching triples found.
             try entry.value.variants.map{
-                ExecutableInfo(name: entry.key, executablePath: try AbsolutePath(validating: $0.path, relativeTo: self.artifactPath), supportedTriples: $0.supportedTriples.filter({$0 == versionLessTriple}))
+                let filteredSupportedTriples = try $0.supportedTriples.filter({try $0.withoutVersion() == versionLessTriple})
+                return ExecutableInfo(name: entry.key, executablePath: try AbsolutePath(validating: $0.path, relativeTo: self.artifactPath), supportedTriples: filteredSupportedTriples)
             }
         }
     }
 }
 
-fileprivate extension Triple {
+extension Triple {
     func withoutVersion() throws -> Triple {
         if isDarwin() {
             let stringWithoutVersion = tripleString(forPlatformVersion: "")

Sources/SPMBuildCore/PluginInvocation.swift

@@ -372,8 +372,8 @@ extension PackageGraph {
 
                 let toolNamesToTriples = accessibleTools.reduce(into: [String: [String]](), { dict, tool in
                     switch tool {
-                    case .vendedTool(let name, _, let triple):
-                        dict[name] = triple
+                    case .vendedTool(let name, _, let triples):
+                        dict[name, default: []].append(contentsOf: triples)
                     default: break
                     }
                 })
@@ -533,7 +533,7 @@ public extension PluginTarget {
             if let target = executableOrBinaryTarget as? BinaryTarget {
                 // TODO: Memoize this result for the host triple
                 let execInfos = try target.parseArtifactArchives(for: hostTriple, fileSystem: fileSystem)
-                return execInfos.map{ .vendedTool(name: $0.name, path: $0.executablePath, supportedTriples: $0.supportedTriples.map{$0.tripleString}) }
+                return try execInfos.map{ .vendedTool(name: $0.name, path: $0.executablePath, supportedTriples: try $0.supportedTriples.map{ try $0.withoutVersion().tripleString }) }
             }
             // For an executable target we create a `builtTool`.
             else if executableOrBinaryTarget.type == .executable {

Tests/SPMBuildCoreTests/PluginInvocationTests.swift

@@ -1056,8 +1056,7 @@ class PluginInvocationTests: XCTestCase {
         }
     }
 
-
-    func testParseArtifactNotSupportedOnTargetPlatform() throws {
+    func checkParseArtifactsPlatformCompatibility(artifactSupportedTriples: [Triple], hostTriple: Triple, pluginResultChecker: ([ResolvedTarget: [BuildToolPluginInvocationResult]]) throws -> ()) throws {
         // Only run the test if the environment in which we're running actually supports Swift concurrency (which the plugin APIs require).
         try XCTSkipIf(!UserToolchain.default.supportsSwiftConcurrency(), "skipping because test environment doesn't support concurrency")
 
@@ -1119,7 +1118,12 @@ class PluginInvocationTests: XCTestCase {
                  }
             """
             try localFileSystem.writeFileContents(myPluginTargetDir.appending(component: "plugin.swift"), string: content)
-            let tripleString = "x86_64-apple-macos15"
+            let artifactVariants = artifactSupportedTriples.map {
+                """
+                { "path": "LocalBinaryTool.sh", "supportedTriples": ["\($0.tripleString)"] }
+                """
+            }
+
             try localFileSystem.writeFileContents(packageDir.appending(components: "Binaries", "LocalBinaryTool.artifactbundle", "info.json")) {
                 $0 <<< """
                 {   "schemaVersion": "1.0",
@@ -1128,9 +1132,7 @@ class PluginInvocationTests: XCTestCase {
                             "type": "executable",
                             "version": "1.2.3",
                             "variants": [
-                                {   "path": "LocalBinaryTool.sh",
-                                    "supportedTriples": ["\(tripleString)"]
-                                },
+                                \(artifactVariants.joined(separator: ","))
                             ]
                         }
                     }
@@ -1166,12 +1168,16 @@ class PluginInvocationTests: XCTestCase {
             XCTAssertEqual(buildToolPlugin.name, "Foo")
             XCTAssertEqual(buildToolPlugin.capability, .buildTool)
 
+            // Construct a toolchain with a made-up host/target triple
+            let destination = try Destination.default
+            let toolchain = try UserToolchain(destination: Destination(hostTriple: hostTriple, targetTriple: hostTriple, sdkRootDir: destination.sdkRootDir, toolchainBinDir: destination.toolchainBinDir))
+
             // Create a plugin script runner for the duration of the test.
             let pluginCacheDir = tmpPath.appending(component: "plugin-cache")
             let pluginScriptRunner = DefaultPluginScriptRunner(
                 fileSystem: localFileSystem,
                 cacheDir: pluginCacheDir,
-                toolchain: try UserToolchain.default
+                toolchain: toolchain
             )
 
             // Invoke build tool plugin
@@ -1186,13 +1192,50 @@ class PluginInvocationTests: XCTestCase {
                 observabilityScope: observability.topScope,
                 fileSystem: localFileSystem
             )
-            var checked = false
+            try pluginResultChecker(result)
+        }
+    }
+
+    func testParseArtifactNotSupportedOnTargetPlatform() throws {
+        let hostTriple = try UserToolchain.default.triple
+        let artifactSupportedTriples = try [Triple("riscv64-apple-windows-android")]
+
+        var checked = false
+        try checkParseArtifactsPlatformCompatibility(artifactSupportedTriples: artifactSupportedTriples, hostTriple: hostTriple) { result in
             if let pluginResult = result.first,
                let diag = pluginResult.value.first?.diagnostics,
                diag.description == "[[error]: Tool ‘LocalBinaryTool’ is not supported on the target platform]" {
                 checked = true
             }
-            XCTAssertTrue(checked)
+        }
+        XCTAssertTrue(checked)
+    }
+
+    func testParseArtifactsDoesNotCheckPlatformVersion() throws {
+        let hostTriple = try UserToolchain.default.triple
+        let artifactSupportedTriples = try [Triple("\(hostTriple.withoutVersion().tripleString)20.0")]
+
+        try checkParseArtifactsPlatformCompatibility(artifactSupportedTriples: artifactSupportedTriples, hostTriple: hostTriple) { result in
+            result.forEach {
+                $0.value.forEach {
+                    XCTAssertTrue($0.succeeded, "plugin unexpectedly failed")
+                    XCTAssertEqual($0.diagnostics.map { $0.message }, [], "plugin produced unexpected diagnostics")
+                }
+            }
+        }
+    }
+
+    func testParseArtifactsConsidersAllSupportedTriples() throws {
+        let hostTriple = try UserToolchain.default.triple
+        let artifactSupportedTriples = [hostTriple, try Triple("riscv64-apple-windows-android")]
+
+        try checkParseArtifactsPlatformCompatibility(artifactSupportedTriples: artifactSupportedTriples, hostTriple: hostTriple) { result in
+            result.forEach {
+                $0.value.forEach {
+                    XCTAssertTrue($0.succeeded, "plugin unexpectedly failed")
+                    XCTAssertEqual($0.diagnostics.map { $0.message }, [], "plugin produced unexpected diagnostics")
+                }
+            }
         }
     }
 }