Revert "Hide build system internals with @_spi (#7365)"

This reverts commit 92d65bf.

Author: xedin

Sources/Build/BuildOperation.swift

@@ -12,16 +12,10 @@
 
 @_spi(SwiftPMInternal)
 import Basics
-
-@_spi(SwiftPMInternal)
-import Build
-
 import LLBuildManifest
 import PackageGraph
 import PackageLoading
 import PackageModel
-
-@_spi(SwiftPMInternal)
 import SPMBuildCore
 import SPMLLBuild
 import Foundation
@@ -42,7 +36,6 @@ import DriverSupport
 import SwiftDriver
 #endif
 
-@_spi(SwiftPMInternal)
 public final class BuildOperation: PackageStructureDelegate, SPMBuildCore.BuildSystem, BuildErrorAdviceProvider {
     /// The delegate used by the build system.
     public weak var delegate: SPMBuildCore.BuildSystemDelegate?

Sources/Build/BuildOperationBuildSystemDelegateHandler.swift

@@ -16,10 +16,7 @@ import Dispatch
 import Foundation
 import LLBuildManifest
 import PackageModel
-
-@_spi(SwiftPMInternal)
 import SPMBuildCore
-
 import SPMLLBuild
 
 import struct TSCBasic.ByteString

Sources/Commands/CommandWorkspaceDelegate.swift

@@ -11,10 +11,7 @@
 //===----------------------------------------------------------------------===//
 
 import Basics
-
-@_spi(SwiftPMInternal)
 import CoreCommands
-
 import Dispatch
 import class Foundation.NSLock
 import struct Foundation.URL

Sources/Commands/PackageCommands/APIDiff.swift

@@ -12,18 +12,12 @@
 
 import ArgumentParser
 import Basics
-
-@_spi(SwiftPMInternal)
 import CoreCommands
-
 import Dispatch
 import PackageGraph
 import PackageModel
 import SourceControl
 
-@_spi(SwiftPMInternal)
-import SPMBuildCore
-
 struct DeprecatedAPIDiff: ParsableCommand {
     static let configuration = CommandConfiguration(commandName: "experimental-api-diff",
                                                     abstract: "Deprecated - use `swift package diagnose-api-breaking-changes` instead",

Sources/Commands/PackageCommands/ArchiveSource.swift

@@ -12,10 +12,7 @@
 
 import ArgumentParser
 import Basics
-
-@_spi(SwiftPMInternal)
 import CoreCommands
-
 import SourceControl
 
 extension SwiftPackageCommand {

Sources/Commands/PackageCommands/CompletionCommand.swift

@@ -11,8 +11,6 @@
 //===----------------------------------------------------------------------===//
 
 import ArgumentParser
-
-@_spi(SwiftPMInternal)
 import CoreCommands
 
 import var TSCBasic.stdoutStream

Sources/Commands/PackageCommands/ComputeChecksum.swift

@@ -12,10 +12,7 @@
 
 import ArgumentParser
 import Basics
-
-@_spi(SwiftPMInternal)
 import CoreCommands
-
 import Workspace
 
 import struct TSCBasic.SHA256

Sources/Commands/PackageCommands/Config.swift

@@ -12,10 +12,7 @@
 
 import ArgumentParser
 import Basics
-
-@_spi(SwiftPMInternal)
 import CoreCommands
-
 import Workspace
 
 import var TSCBasic.stderrStream

Sources/Commands/PackageCommands/Describe.swift

@@ -12,10 +12,7 @@
 
 import ArgumentParser
 import Basics
-
-@_spi(SwiftPMInternal)
 import CoreCommands
-
 import Foundation
 import PackageModel
 

Sources/Commands/PackageCommands/DumpCommands.swift

@@ -12,16 +12,9 @@
 
 import ArgumentParser
 import Basics
-
-@_spi(SwiftPMInternal)
 import CoreCommands
-
 import Foundation
 import PackageModel
-
-@_spi(SwiftPMInternal)
-import SPMBuildCore
-
 import XCBuildSupport
 
 struct DumpSymbolGraph: SwiftCommand {

Sources/Commands/PackageCommands/EditCommands.swift

@@ -12,10 +12,7 @@
 
 import ArgumentParser
 import Basics
-
-@_spi(SwiftPMInternal)
 import CoreCommands
-
 import SourceControl
 
 extension SwiftPackageCommand {

Sources/Commands/PackageCommands/Format.swift

@@ -12,10 +12,7 @@
 
 import ArgumentParser
 import Basics
-
-@_spi(SwiftPMInternal)
 import CoreCommands
-
 import PackageModel
 
 import class TSCBasic.Process

Sources/Commands/PackageCommands/Init.swift

@@ -12,10 +12,7 @@
 
 import ArgumentParser
 import Basics
-
-@_spi(SwiftPMInternal)
 import CoreCommands
-
 import Workspace
 import SPMBuildCore
 

Sources/Commands/PackageCommands/InstalledPackages.swift

@@ -11,16 +11,9 @@
 //===----------------------------------------------------------------------===//
 
 import ArgumentParser
-
-@_spi(SwiftPMInternal)
 import CoreCommands
-
 import Foundation
 import PackageModel
-
-@_spi(SwiftPMInternal)
-import SPMBuildCore
-
 import TSCBasic
 
 extension SwiftPackageCommand {

Sources/Commands/PackageCommands/Learn.swift

@@ -12,10 +12,7 @@
 
 import ArgumentParser
 import Basics
-
-@_spi(SwiftPMInternal)
 import CoreCommands
-
 import PackageGraph
 import PackageModel
 

Sources/Commands/PackageCommands/PluginCommand.swift

@@ -12,13 +12,7 @@
 
 import ArgumentParser
 import Basics
-
-@_spi(SwiftPMInternal)
 import CoreCommands
-
-@_spi(SwiftPMInternal)
-import SPMBuildCore
-
 import Dispatch
 
 import PackageGraph

Sources/Commands/PackageCommands/ResetCommands.swift

@@ -11,8 +11,6 @@
 //===----------------------------------------------------------------------===//
 
 import ArgumentParser
-
-@_spi(SwiftPMInternal)
 import CoreCommands
 
 extension SwiftPackageCommand {

Sources/Commands/PackageCommands/Resolve.swift

@@ -11,10 +11,7 @@
 //===----------------------------------------------------------------------===//
 
 import ArgumentParser
-
-@_spi(SwiftPMInternal)
 import CoreCommands
-
 import TSCUtility
 
 extension SwiftPackageCommand {

Sources/Commands/PackageCommands/ShowDependencies.swift

@@ -13,10 +13,7 @@
 
 import ArgumentParser
 import Basics
-
-@_spi(SwiftPMInternal)
 import CoreCommands
-
 import PackageGraph
 
 import class TSCBasic.LocalFileOutputByteStream

Sources/Commands/PackageCommands/SwiftPackageCommand.swift

@@ -12,10 +12,7 @@
 
 import ArgumentParser
 import Basics
-
-@_spi(SwiftPMInternal)
 import CoreCommands
-
 import Foundation
 import PackageGraph
 import PackageLoading

Sources/Commands/PackageCommands/ToolsVersionCommand.swift

@@ -11,10 +11,7 @@
 //===----------------------------------------------------------------------===//
 
 import ArgumentParser
-
-@_spi(SwiftPMInternal)
 import CoreCommands
-
 import PackageLoading
 import PackageModel
 import Workspace

Sources/Commands/PackageCommands/Update.swift

@@ -11,10 +11,7 @@
 //===----------------------------------------------------------------------===//
 
 import ArgumentParser
-
-@_spi(SwiftPMInternal)
 import CoreCommands
-
 import Dispatch
 import PackageModel
 import PackageGraph

Sources/Commands/Snippets/CardStack.swift

@@ -11,10 +11,7 @@
 //===----------------------------------------------------------------------===//
 
 import Basics
-
-@_spi(SwiftPMInternal)
 import CoreCommands
-
 import PackageGraph
 import PackageModel
 

Sources/Commands/Snippets/Cards/SnippetCard.swift

@@ -11,14 +11,7 @@
 //===----------------------------------------------------------------------===//
 
 import Basics
-
-@_spi(SwiftPMInternal)
 import CoreCommands
-
-
-@_spi(SwiftPMInternal)
-import SPMBuildCore
-
 import PackageModel
 
 import enum TSCBasic.ProcessEnv

Sources/Commands/Snippets/Cards/SnippetGroupCard.swift

@@ -10,9 +10,7 @@
 //
 //===----------------------------------------------------------------------===//
 
-@_spi(SwiftPMInternal)
 import CoreCommands
-
 import PackageModel
 
 /// A card showing the snippets in a ``SnippetGroup``.

Sources/Commands/Snippets/Cards/TopCard.swift

@@ -10,10 +10,7 @@
 //
 //===----------------------------------------------------------------------===//
 
-
-@_spi(SwiftPMInternal)
 import CoreCommands
-
 import Foundation
 import PackageModel
 import PackageGraph

Sources/Commands/SwiftBuildCommand.swift

@@ -12,16 +12,9 @@
 
 import ArgumentParser
 import Basics
-
-@_spi(SwiftPMInternal)
 import Build
-
-@_spi(SwiftPMInternal)
 import CoreCommands
-
 import PackageGraph
-
-@_spi(SwiftPMInternal)
 import SPMBuildCore
 import XCBuildSupport
 
@@ -120,7 +113,6 @@ struct BuildCommandOptions: ParsableArguments {
 }
 
 /// swift-build command namespace
-@_spi(SwiftPMInternal)
 public struct SwiftBuildCommand: AsyncSwiftCommand {
     public static var configuration = CommandConfiguration(
         commandName: "build",

Sources/Commands/SwiftRunCommand.swift

@@ -12,17 +12,11 @@
 
 import ArgumentParser
 import Basics
-
-@_spi(SwiftPMInternal)
 import CoreCommands
-
 import Foundation
 import PackageGraph
 import PackageModel
 
-@_spi(SwiftPMInternal)
-import SPMBuildCore
-
 import enum TSCBasic.ProcessEnv
 import func TSCBasic.exec
 
@@ -96,7 +90,6 @@ struct RunCommandOptions: ParsableArguments {
 }
 
 /// swift-run command namespace
-@_spi(SwiftPMInternal)
 public struct SwiftRunCommand: AsyncSwiftCommand {
     public static var configuration = CommandConfiguration(
         commandName: "run",