Rescue graph building test into subcommand

Sources/apk/Graph/ApkPackageGraph.swift

@@ -3,20 +3,20 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-class ApkPackageGraph {
-  let pkgIndex: ApkIndex
+public class ApkPackageGraph {
+  public let pkgIndex: ApkIndex
 
   private var _nodes = [ApkPackageGraphNode]()
 
-  var nodes: [ApkPackageGraphNode] { self._nodes }
-  var shallowIsolates: [ApkPackageGraphNode] { self._nodes.filter(\.parents.isEmpty) }
-  var deepIsolates: [ApkPackageGraphNode] { self._nodes.filter(\.children.isEmpty) }
+  public var nodes: [ApkPackageGraphNode] { self._nodes }
+  public var shallowIsolates: [ApkPackageGraphNode] { self._nodes.filter(\.parents.isEmpty) }
+  public var deepIsolates: [ApkPackageGraphNode] { self._nodes.filter(\.children.isEmpty) }
 
-  init(index: ApkIndex) {
+  public init(index: ApkIndex) {
     self.pkgIndex = index
   }
 
-  func buildGraphNode() {
+  public func buildGraphNode() {
     var provides = [String: Int]()
 
     for (idx, package) in self.pkgIndex.packages.enumerated() {

Sources/apk/Graph/ApkPackageGraphNode.swift

@@ -5,7 +5,7 @@
 
 import Foundation
 
-class ApkPackageGraphNode {
+public class ApkPackageGraphNode {
   private weak var graph: ApkPackageGraph!
   let package: ApkIndexPackage
 
@@ -21,7 +21,7 @@ class ApkPackageGraphNode {
 }
 
 extension ApkPackageGraphNode: CustomStringConvertible {
-  var description: String {
+  public var description: String {
     var result = "node[\(self.package.name)]"
     if !self.parents.isEmpty {
       result += ", parents[\(self.parents.lazy.map(\.description).joined(separator: ", "))]"

Sources/dpk-cli/CommandLine.swift

@@ -16,6 +16,7 @@ struct DarwinApkCLI: AsyncParsableCommand {
       DpkUpdateCommand.self,
       DpkUpgradeCommand.self,
       DpkSearchCommand.self,
-      DpkInfoCommand.self
+      DpkInfoCommand.self,
+      DpkGraphCommand.self
     ])
 }

Sources/dpk-cli/Subcommands/DpkGraphCommand.swift

@@ -4,18 +4,17 @@
  */
 
 import Foundation
+import ArgumentParser
+import darwin_apk
 
-public struct ApkIndexUpdater {
-  public var repositories: [ApkIndexRepository]
+struct DpkGraphCommand: AsyncParsableCommand {
+  static let configuration = CommandConfiguration(commandName: "graph")
 
-  public init() {
-    self.repositories = []
-  }
-
-  public func buildGraph() async {
+  func run() async throws(ExitCode) {
     let graph: ApkPackageGraph
     do {
-      graph = ApkPackageGraph(index: try await ApkIndexReader.resolve(self.repositories, fetch: .lazy))
+      let localRepositories = try await ApkRepositoriesConfig()
+      graph = ApkPackageGraph(index: try await ApkIndexReader.resolve(localRepositories.repositories, fetch: .lazy))
       graph.buildGraphNode()
 
       try graph.pkgIndex.description.write(to: URL(filePath: "packages.txt"), atomically: false, encoding: .utf8)