Bump swift version

Author: Kyle-Ye

Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version:4.2
+// swift-tools-version:5.4
 /*
  This source file is part of the Swift.org open source project
 
@@ -25,13 +25,22 @@ let package = Package(
     targets: [
         .target(
             name: "Markdown",
-            dependencies: ["cmark-gfm", "cmark-gfm-extensions", "CAtomic"]),
-        .target(
+            dependencies: [
+                "CAtomic",
+                .product(name: "cmark-gfm", package: "swift-cmark"),
+                .product(name: "cmark-gfm-extensions", package: "swift-cmark"),
+            ]),
+        .executableTarget(
             name: "markdown-tool",
-            dependencies: ["Markdown", .product(name: "ArgumentParser", package: "swift-argument-parser")]),
+            dependencies: [
+                "Markdown",
+                .product(name: "ArgumentParser", package: "swift-argument-parser"),
+            ]),
         .testTarget(
             name: "MarkdownTests",
-            dependencies: ["Markdown"]),
+            dependencies: ["Markdown"],
+            resources: [.copy("Visitors/Everything.md")]
+        ),
         .target(name: "CAtomic"),
     ]
 )

[email protected]

@@ -0,0 +1,63 @@
+// swift-tools-version:5.5
+/*
+ This source file is part of the Swift.org open source project
+
+ Copyright (c) 2021 Apple Inc. and the Swift project authors
+ Licensed under Apache License v2.0 with Runtime Library Exception
+
+ See https://swift.org/LICENSE.txt for license information
+ See https://swift.org/CONTRIBUTORS.txt for Swift project authors
+*/
+
+import PackageDescription
+import class Foundation.ProcessInfo
+
+let package = Package(
+    name: "swift-markdown",
+    products: [
+        .library(
+            name: "Markdown",
+            targets: ["Markdown"]),
+        .executable(
+            name: "markdown-tool",
+            targets: ["markdown-tool"]),
+    ],
+    targets: [
+        .target(
+            name: "Markdown",
+            dependencies: [
+                "CAtomic",
+                .product(name: "cmark-gfm", package: "swift-cmark"),
+                .product(name: "cmark-gfm-extensions", package: "swift-cmark"),
+            ]),
+        .executableTarget(
+            name: "markdown-tool",
+            dependencies: [
+                "Markdown",
+                .product(name: "ArgumentParser", package: "swift-argument-parser"),
+            ]),
+        .testTarget(
+            name: "MarkdownTests",
+            dependencies: ["Markdown"],
+            resources: [.copy("Visitors/Everything.md")]
+        ),
+        .target(name: "CAtomic"),
+    ]
+)
+
+// If the `SWIFTCI_USE_LOCAL_DEPS` environment variable is set,
+// we're building in the Swift.org CI system alongside other projects in the Swift toolchain and
+// we can depend on local versions of our dependencies instead of fetching them remotely.
+if ProcessInfo.processInfo.environment["SWIFTCI_USE_LOCAL_DEPS"] == nil {
+    // Building standalone, so fetch all dependencies remotely.
+    package.dependencies += [
+        .package(url: "https://github.com/apple/swift-cmark.git", .branch("gfm")),
+        .package(url: "https://github.com/apple/swift-argument-parser", .upToNextMinor(from: "0.4.4")),
+    ]
+} else {
+    // Building in the Swift.org CI system, so rely on local versions of dependencies.
+    package.dependencies += [
+        .package(path: "../swift-cmark-gfm"),
+        .package(path: "../swift-argument-parser"),
+    ]
+}