[LyX/master] Avoid call of lilypond-book as python script if not on Windows

[Stephan Witt]

commit 3be3183eea8e92d78fa6c834cf67a992b75eead4
Author: Stephan Witt <switt at lyx.org>
Date:   Mon Jan 29 07:59:48 2024 +0100

    Avoid call of lilypond-book as python script if not on Windows
---
 lib/configure.py |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/lib/configure.py b/lib/configure.py
index 9dd69c3..80cc787 100644
--- a/lib/configure.py
+++ b/lib/configure.py
@@ -1377,6 +1377,13 @@ def checkConverterEntries():
                     break
                 else:
                     logger.info('+  found LilyPond-book, but version %s is too old.' % version_number)
+            else:
+                logger.info('+  found LilyPond book, but version string does not match: %s' % version_string)
+
+            # If not on Windows, skip the check as argument to python.
+            if os.name != 'nt':
+                break
+
         if not found_lilypond_book:
             logger.info('+  found LilyPond-book, but could not extract version number.')
     #