From d67666ab1befd82abd618786debb101f047ad9c1 Mon Sep 17 00:00:00 2001
From: Jake Petroules <jake.petroules@apple.com>
Date: Thu, 2 Oct 2025 13:07:56 -0700
Subject: [PATCH] Improve error output when a process fails to launch

This relates to #836 where failing to spawn a process says nothing about _which_ process failed to spawn.
---
 Sources/SWBUtil/Process.swift | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/Sources/SWBUtil/Process.swift b/Sources/SWBUtil/Process.swift
index 7f119cc6..0c696dca 100644
--- a/Sources/SWBUtil/Process.swift
+++ b/Sources/SWBUtil/Process.swift
@@ -175,7 +175,13 @@ extension Process {
 
         async let outputTask = await collect(streams)
 
-        try await process.run(interruptible: interruptible)
+        do {
+            try await process.run(interruptible: interruptible)
+        } catch is CancellationError {
+            throw CancellationError()
+        } catch {
+            throw try RunProcessLaunchError(process, context: error.localizedDescription)
+        }
 
         let output = try await outputTask