From 053ba7f08231d44e8bcea2eec5ddb3d1d728cf66 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Tue, 27 Feb 2018 19:56:52 +0530
Subject: [PATCH] Nicer error message when user tries to run logo/make.py with
 missing tools

---
 logo/make.py | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/logo/make.py b/logo/make.py
index 9c09ba232..e61e35621 100755
--- a/logo/make.py
+++ b/logo/make.py
@@ -10,10 +10,17 @@ os.chdir(os.path.dirname(os.path.abspath(__file__)))
 src = os.path.abspath('kitty.svg')
 
 
+def run(*args):
+    try:
+        subprocess.check_call(args)
+    except EnvironmentError:
+        raise SystemExit('You are missing the {} program needed to generate the kitty logo'.format(args[0]))
+
+
 def render(output, sz=256):
     print('Rendering at {0}x{0}...'.format(sz))
-    subprocess.check_call(['rsvg-convert', '-w', str(sz), '-h', str(sz), '-o', output, src])
-    subprocess.check_call(['optipng', '-quiet', '-o7', '-strip', 'all', output])
+    run('rsvg-convert', '-w', str(sz), '-h', str(sz), '-o', output, src)
+    run('optipng', '-quiet', '-o7', '-strip', 'all', output)
 
 
 render('kitty.png')