From 0b9694575f1aef64eda5b114f23d9d521cbc49dc Mon Sep 17 00:00:00 2001
From: Massimiliano Culpo <massimiliano.culpo@gmail.com>
Date: Thu, 6 Apr 2023 18:09:18 +0200
Subject: spack install: fail if --log-file and not --log-format (#36684)

fixes #34551

"spack install" now fails if a user passed the --logfile option without specifying a log format.
---
 lib/spack/spack/cmd/install.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/spack/spack/cmd/install.py b/lib/spack/spack/cmd/install.py
index b84b73775e..8fe952943b 100644
--- a/lib/spack/spack/cmd/install.py
+++ b/lib/spack/spack/cmd/install.py
@@ -340,6 +340,10 @@ def install(parser, args):
     if args.deprecated:
         spack.config.set("config:deprecated", True, scope="command_line")
 
+    if args.log_file and not args.log_format:
+        msg = "the '--log-format' must be specified when using '--log-file'"
+        tty.die(msg)
+
     arguments.sanitize_reporter_options(args)
 
     def reporter_factory(specs):
-- 
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