Add customSourcePackagesPath to build plugin

Plugins/SwiftPackageListPlugin/SwiftPackageListPlugin.Configuration.swift

@@ -22,6 +22,7 @@ extension SwiftPackageListPlugin.Configuration {
         let requiresLicense: Bool? // swiftlint:disable:this discouraged_optional_boolean
         let ignorePackages: [String]? // swiftlint:disable:this discouraged_optional_collection
         let customPackagesFilePaths: [String]? // swiftlint:disable:this discouraged_optional_collection
+        let customSourcePackagesPath: Path?
     }
 }
 

Plugins/SwiftPackageListPlugin/SwiftPackageListPlugin.swift

@@ -16,7 +16,10 @@ struct SwiftPackageListPlugin: Plugin {
         projectPath: Path,
         pluginWorkDirectory: Path
     ) throws -> [Command] {
-        let sourcePackagesPath = try sourcePackagesDirectory(pluginWorkDirectory: pluginWorkDirectory)
+        let sourcePackagesPath = try sourcePackagesDirectory(
+            pluginWorkDirectory: pluginWorkDirectory,
+            customSourcePackagesDirectory: targetConfiguration?.customSourcePackagesPath
+        )
         let outputType = targetConfiguration?.outputType ?? .json
         let outputPath = pluginWorkDirectory
         let requiresLicense = targetConfiguration?.requiresLicense ?? true
@@ -52,7 +55,10 @@ struct SwiftPackageListPlugin: Plugin {
         ]
     }
 
-    private func sourcePackagesDirectory(pluginWorkDirectory: Path) throws -> Path {
+    private func sourcePackagesDirectory(
+        pluginWorkDirectory: Path,
+        customSourcePackagesDirectory: Path?
+    ) throws -> Path {
         var path = pluginWorkDirectory
         while path.string != "/" {
             let potentialLocation = path.appending(subpath: "SourcePackages")
@@ -61,6 +67,23 @@ struct SwiftPackageListPlugin: Plugin {
             }
             path = path.removingLastComponent()
         }
-        throw SwiftPackageListPlugin.Error.sourcePackagesNotFound(pluginWorkDirectory: pluginWorkDirectory)
+
+        guard let projectDirectory else {
+            throw SwiftPackageListPlugin.Error.sourcePackagesNotFound(pluginWorkDirectory: pluginWorkDirectory)
+        }
+        var possibleSourcePackagesPaths = [
+            path.appending([projectDirectory, "SourcePackages"]),
+            path.appending("SourcePackages"),
+        ]
+        if let customSourcePackagesDirectory {
+            possibleSourcePackagesPaths.append(customSourcePackagesDirectory)
+        }
+        let sourcePackagesPath = possibleSourcePackagesPaths.first { path in
+            return FileManager.default.fileExists(atPath: path.string)
+        }
+        guard let sourcePackagesPath else {
+            throw SwiftPackageListPlugin.Error.sourcePackagesNotFound(pluginWorkDirectory: pluginWorkDirectory)
+        }
+        return sourcePackagesPath
     }
 }

README.md

@@ -89,6 +89,7 @@ By default this will use the JSON output with `--requires-license` but you can c
             customPackagesFilePaths: [
                 "custom-packages.json",
             ],
+            "customSourcePackagesPath" : "./SourcePackages",
         },
     },
 }