From 3a0883816f8736f28a1f3f18e62c9ba02f7a25d3 Mon Sep 17 00:00:00 2001
From: Max Desiatov <m_desiatov@apple.com>
Date: Wed, 19 Jun 2024 14:58:26 +0100
Subject: [PATCH] Implement `sourcekit-lsp --version` option
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Currently `sourcekit-lsp --version` is an invalid option, which makes it harder to debug issues with SourceKit-LSP, as one can't even easily know which version is installed:

```
❯ sourcekit-lsp --version
Error: Unknown option '--version'
```
---
 Sources/sourcekit-lsp/SourceKitLSP.swift | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Sources/sourcekit-lsp/SourceKitLSP.swift b/Sources/sourcekit-lsp/SourceKitLSP.swift
index e3e4dbf5e..9ea0873ad 100644
--- a/Sources/sourcekit-lsp/SourceKitLSP.swift
+++ b/Sources/sourcekit-lsp/SourceKitLSP.swift
@@ -11,6 +11,7 @@
 //===----------------------------------------------------------------------===//
 
 import ArgumentParser
+import struct Basics.SwiftVersion
 import Csourcekitd  // Not needed here, but fixes debugging...
 import Diagnose
 import Dispatch
@@ -103,6 +104,7 @@ extension SKSupport.WorkspaceType: @retroactive ExpressibleByArgument {}
 struct SourceKitLSP: AsyncParsableCommand {
   static let configuration = CommandConfiguration(
     abstract: "Language Server Protocol implementation for Swift and C-based languages",
+    version: "sourcekit-lsp \(Basics.SwiftVersion.current.displayString)",
     subcommands: [
       DiagnoseCommand.self,
       DebugCommand.self,