Sync plugin properties with main repository (#4)

Author: SimplyDanny

.github/workflows/test.yml

@@ -44,7 +44,7 @@ jobs:
         run: exit 1
       - name: Let command fail
         id: failed_command
-        run: swift package swiftlint
+        run: swift package plugin --allow-writing-to-package-directory swiftlint
         continue-on-error: true
       - name: Verify that command failed
         if: ${{ steps.failed_command.outcome != 'failure' }}
@@ -61,5 +61,5 @@ jobs:
           echo "force_cast: warning" > .swiftlint.yml
       - name: Check that all commands pass
         run: |
-          swift package swiftlint | grep -q "Force Cast Violation"
+          swift package plugin --allow-writing-to-package-directory swiftlint | grep -q "Force Cast Violation"
           xcodebuild -scheme SwiftLintPluginsTest -destination 'platform=macOS' -skipPackagePluginValidation build | grep -q "Force Cast Violation"

Package.swift

@@ -15,12 +15,21 @@ let package = Package(
         .plugin(
             name: "SwiftLintBuildToolPlugin",
             capability: .buildTool(),
-            dependencies: [.target(name: "SwiftLintBinary")]
+            dependencies: [.target(name: "SwiftLintBinary")],
+            packageAccess: false
         ),
         .plugin(
             name: "SwiftLintCommandPlugin",
-            capability: .command(intent: .custom(verb: "swiftlint", description: "SwiftLint Command Plugin")),
-            dependencies: [.target(name: "SwiftLintBinary")]
+            capability: .command(
+                intent: .custom(verb: "swiftlint", description: "SwiftLint Command Plugin"),
+                permissions: [
+                    .writeToPackageDirectory(
+                        reason: "When this command is run with the `--fix` option it may modify source files."
+                    ),
+                ]
+            ),
+            dependencies: [.target(name: "SwiftLintBinary")],
+            packageAccess: false
         ),
         .binaryTarget(
             name: "SwiftLintBinary",