From 34f5f546841c8e9022ac0ccf957f636907e643bb Mon Sep 17 00:00:00 2001
From: Jan Tuomi <jan@jantuomi.fi>
Date: Mon, 16 Feb 2026 14:46:24 +0200
Subject: Updates

---
 jprov/runner.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'jprov/runner.py')

diff --git a/jprov/runner.py b/jprov/runner.py
index 88dfe7f..0f0a629 100644
--- a/jprov/runner.py
+++ b/jprov/runner.py
@@ -58,6 +58,11 @@ def run(
                 fh.write(stderr)
 
     if proc.returncode != 0 and not allow_fail:
-        raise RuntimeError(f"command failed: {' '.join(cmd_list)} (exit {proc.returncode})")
+        detail = ""
+        if stderr:
+            detail = f" stderr: {stderr.strip()}"
+        raise RuntimeError(
+            f"command failed: {' '.join(cmd_list)} (exit {proc.returncode}){detail}"
+        )
 
     return RunResult(cmd=cmd_list, returncode=proc.returncode, stdout=stdout, stderr=stderr)
-- 
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