From c6f4c93d0afb149deb5f6faee5f79fa4d95d7853 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Thu, 16 Nov 2023 21:49:38 +0530
Subject: [PATCH] Nicer exit code diagnostic

---
 .github/workflows/ci.py | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/ci.py b/.github/workflows/ci.py
index 32f4ccca9..a34ae1dc3 100644
--- a/.github/workflows/ci.py
+++ b/.github/workflows/ci.py
@@ -20,11 +20,20 @@ SW = None
 def run(*a):
     if len(a) == 1:
         a = shlex.split(a[0])
-    print(' '.join(map(shlex.quote, a)))
+    cmd = ' '.join(map(shlex.quote, a))
+    print(cmd)
     sys.stdout.flush()
     ret = subprocess.Popen(a).wait()
     if ret != 0:
-        raise SystemExit(ret)
+        if ret < 0:
+            import signal
+            try:
+                sig = signal.Signals(-ret)
+            except ValueError:
+                pass
+            else:
+                raise SystemExit(f'The following process was killed by signal: {sig.name}:\n{cmd}')
+        raise SystemExit(f'The following process failed with exit code: {ret}:\n{cmd}')
 
 
 def install_deps():