chore: reformat SConstruct

SConstruct

@@ -12,97 +12,100 @@ env.ParseConfig('pkg-config --cflags --libs gl')
 
 # Merge in glu + glut pkg configs if they exist
 for pkg in ['glu', 'glut']:
-	try:
-		env.ParseConfig('pkg-config --cflags --libs ' + pkg)
-	except Exception:
-		pass
+  try:
+    env.ParseConfig('pkg-config --cflags --libs ' + pkg)
+  except Exception:
+    pass
 
 # configure
 if not env.GetOption("clean"):
-	conf = Configure(env)
+  conf = Configure(env)
 
-	# check for GL
-	if conf.CheckLib('GL', 'glLightfv'):
-		if conf.CheckCHeader('GL/gl.h'):
-			conf.env.AppendUnique(CPPFLAGS=['-DHAVE_GL'])
-		else:
-			print("GL header file not found!")
-			Exit(1)
-	else:
-		print("GL library not found!")
-		Exit(1)
-	# check for GLU
-	if conf.CheckLib('GLU', 'gluOrtho2D'):
-		if conf.CheckCHeader('GL/glu.h'):
-			conf.env.AppendUnique(CPPFLAGS=['-DHAVE_GLU'])
-		else:
-			print("GLU header file not found!")
-			Exit(1)
-	else:
-		print("GLU library not found!")
-		Exit(1)
-	# check for GLUT
-	if conf.CheckLib('glut', 'glutMainLoop'):
-		if conf.CheckCHeader('GL/glut.h'):
-			conf.env.AppendUnique(CPPFLAGS=['-DHAVE_GLUT'])
-		else:
-			print("GLUT header file not found!")
-			Exit(1)
-	else:
-		print("GLUT library not found!")
-		Exit(1)
-	# check for libm
-	if conf.CheckLib('m', 'fmod'):
-		if conf.CheckCHeader('math.h'):
-			conf.env.AppendUnique(CPPFLAGS=['-DHAVE_GLUT'])
-		else:
-			print("GLUT header file not found!")
-			Exit(1)
-	else:
-		print("GLUT library not found!")
-		Exit(1)
+  # check for GL
+  if conf.CheckLib('GL', 'glLightfv'):
+    if conf.CheckCHeader('GL/gl.h'):
+      conf.env.AppendUnique(CPPFLAGS=['-DHAVE_GL'])
+    else:
+      print("GL header file not found!")
+      Exit(1)
+  else:
+    print("GL library not found!")
+    Exit(1)
 
-	# check whether gettimeofday() exists, and how many arguments it has
-	print("Checking for gettimeofday() semantics...", end=' ')
-	if conf.TryCompile("""#include <stdlib.h>
+  # check for GLU
+  if conf.CheckLib('GLU', 'gluOrtho2D'):
+    if conf.CheckCHeader('GL/glu.h'):
+      conf.env.AppendUnique(CPPFLAGS=['-DHAVE_GLU'])
+    else:
+      print("GLU header file not found!")
+      Exit(1)
+  else:
+    print("GLU library not found!")
+    Exit(1)
+
+  # check for GLUT
+  if conf.CheckLib('glut', 'glutMainLoop'):
+    if conf.CheckCHeader('GL/glut.h'):
+      conf.env.AppendUnique(CPPFLAGS=['-DHAVE_GLUT'])
+    else:
+      print("GLUT header file not found!")
+      Exit(1)
+  else:
+    print("GLUT library not found!")
+    Exit(1)
+
+  # check for libm
+  if conf.CheckLib('m', 'fmod'):
+    if conf.CheckCHeader('math.h'):
+      conf.env.AppendUnique(CPPFLAGS=['-DHAVE_GLUT'])
+    else:
+      print("GLUT header file not found!")
+      Exit(1)
+  else:
+    print("GLUT library not found!")
+    Exit(1)
+
+  # check whether gettimeofday() exists, and how many arguments it has
+  print("Checking for gettimeofday() semantics...", end=' ')
+  if conf.TryCompile("""#include <stdlib.h>
 #include <sys/time.h>
 int main() {
  struct timeval tv;
  struct timezone tzp;
  gettimeofday(&tv, &tzp);
 }
-	""", '.c'):
-		conf.env.AppendUnique(CPPFLAGS=['-DHAVE_GETTIMEOFDAY',
-										'-DGETTIMEOFDAY_TWO_ARGS'])
-		print("two args")
-	else:
-		if conf.TryCompile("""#include <stdlib.h>
-		#include <sys/time.h>
-		int main() {
-		struct timeval tv; gettimeofday(&tv);
-		}""", '.c'):
-			conf.env.AppendUnique(CPPFLAGS=['-DHAVE_GETTIMEOFDAY'])
-			print("one arg")
-		else:
-			print("unknown")
-			print("gettimeofday() has unknown number of arguments")
-			Exit(1)
-	
+""", '.c'):
+    conf.env.AppendUnique(CPPFLAGS=['-DHAVE_GETTIMEOFDAY',
+				    '-DGETTIMEOFDAY_TWO_ARGS'])
+    print("two args")
+  else:
+    if conf.TryCompile("""#include <stdlib.h>
+#include <sys/time.h>
+int main() {
+  struct timeval tv; gettimeofday(&tv);
+}""", '.c'):
+      conf.env.AppendUnique(CPPFLAGS=['-DHAVE_GETTIMEOFDAY'])
+      print("one arg")
+    else:
+      print("unknown")
+      print("gettimeofday() has unknown number of arguments")
+      Exit(1)
+
 # set warning flags
 warnings = ['',
-			'all',
-			'error',
-			'aggregate-return',
-			'cast-align',
-			'cast-qual',
-			'nested-externs',
-			'shadow',
-			'bad-function-cast',
-			'write-strings'
-			]
+	    'all',
+	    'error',
+	    'aggregate-return',
+	    'cast-align',
+	    'cast-qual',
+	    'nested-externs',
+	    'shadow',
+	    'bad-function-cast',
+	    'write-strings'
+	    ]
 env.AppendUnique(CCFLAGS=['-W%s' % (w,) for w in warnings])
 
 glsnake_sources = 'glsnake.c'
 
 glsnake = env.Program('glsnake', glsnake_sources,
-					  LIBS=['m', 'GL', 'GLU', 'glut'])
+		      LIBS=['m', 'GL', 'GLU', 'glut'])