Update minimum supported Swift version to Swift 5.7 (#1837)

.github/workflows/build.yml

@@ -46,8 +46,8 @@ jobs:
       fail-fast: false
       matrix:
         swiftver:
-          - swift:5.3
-          - swift:5.10
+          - swift:5.7
+          - swift:6.0
         swiftos:
           - focal
     runs-on: ubuntu-latest

.swiftformat

@@ -29,7 +29,7 @@
 --self remove
 --semicolons inline
 --stripunusedargs always
---swiftversion 5.3
+--swiftversion 5.3 # TODO: Update to 5.7 after releasing Swift Format 0.56.0
 --trimwhitespace always
 --wraparguments preserve
 --wrapcollections preserve

Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version:4.2
+// swift-tools-version:5.7
 import PackageDescription
 
 let package = Package(
@@ -6,10 +6,31 @@ let package = Package(
     products: [
         .executable(name: "swiftformat", targets: ["CommandLineTool"]),
         .library(name: "SwiftFormat", targets: ["SwiftFormat"]),
+        .plugin(name: "SwiftFormatPlugin", targets: ["SwiftFormatPlugin"]),
     ],
     targets: [
-        .target(name: "CommandLineTool", dependencies: ["SwiftFormat"], path: "CommandLineTool"),
-        .target(name: "SwiftFormat", path: "Sources"),
-        .testTarget(name: "SwiftFormatTests", dependencies: ["SwiftFormat"], path: "Tests"),
+        .executableTarget(
+            name: "CommandLineTool", dependencies: ["SwiftFormat"], path: "CommandLineTool",
+            exclude: ["swiftformat"]
+        ),
+        .target(name: "SwiftFormat", path: "Sources", exclude: ["Info.plist"]),
+        .testTarget(
+            name: "SwiftFormatTests",
+            dependencies: ["SwiftFormat"],
+            path: "Tests",
+            exclude: ["GlobTest[5].txt"]
+        ),
+        .plugin(
+            name: "SwiftFormatPlugin",
+            capability: .command(
+                intent: .custom(
+                    verb: "swiftformat", description: "Formats Swift source files using SwiftFormat"
+                ),
+                permissions: [
+                    .writeToPackageDirectory(reason: "This command reformats source files"),
+                ]
+            ),
+            dependencies: [.target(name: "CommandLineTool")]
+        ),
     ]
 )

Package@swift-5.6.swift

@@ -1,36 +0,0 @@
-// swift-tools-version:5.6
-import PackageDescription
-
-let package = Package(
-    name: "SwiftFormat",
-    products: [
-        .executable(name: "swiftformat", targets: ["CommandLineTool"]),
-        .library(name: "SwiftFormat", targets: ["SwiftFormat"]),
-        .plugin(name: "SwiftFormatPlugin", targets: ["SwiftFormatPlugin"]),
-    ],
-    targets: [
-        .executableTarget(
-            name: "CommandLineTool", dependencies: ["SwiftFormat"], path: "CommandLineTool",
-            exclude: ["swiftformat"]
-        ),
-        .target(name: "SwiftFormat", path: "Sources", exclude: ["Info.plist"]),
-        .testTarget(
-            name: "SwiftFormatTests",
-            dependencies: ["SwiftFormat"],
-            path: "Tests",
-            exclude: ["GlobTest[5].txt"]
-        ),
-        .plugin(
-            name: "SwiftFormatPlugin",
-            capability: .command(
-                intent: .custom(
-                    verb: "swiftformat", description: "Formats Swift source files using SwiftFormat"
-                ),
-                permissions: [
-                    .writeToPackageDirectory(reason: "This command reformats source files"),
-                ]
-            ),
-            dependencies: [.target(name: "CommandLineTool")]
-        ),
-    ]
-)