Make sure that python setup.py resources works even if calibre has not been installed

setup/resources.py

@@ -6,7 +6,7 @@ __license__   = 'GPL v3'
 __copyright__ = '2009, Kovid Goyal <kovid@kovidgoyal.net>'
 __docformat__ = 'restructuredtext en'
 
-import os, cPickle, re, shutil, marshal, zipfile, glob, time
+import os, cPickle, re, shutil, marshal, zipfile, glob, time, subprocess, sys
 from zlib import compress
 
 from setup import Command, basenames, __appname__
@@ -35,8 +35,8 @@ class Coffee(Command): # {{{
                 help='Display the generated javascript')
 
     def run(self, opts):
-        from calibre.utils.serve_coffee import compile_coffeescript
-        self.compiler = compile_coffeescript
+        cc = self.j(self.SRC, 'calibre', 'utils', 'serve_coffee.py')
+        self.compiler = [sys.executable, cc, 'compile']
         self.do_coffee_compile(opts)
         if opts.watch:
             try:
@@ -63,24 +63,24 @@ class Coffee(Command): # {{{
                 if self.newer(js, x):
                     print ('\t%sCompiling %s'%(time.strftime('[%H:%M:%S] ') if
                         timestamp else '', os.path.basename(x)))
-                    with open(x, 'rb') as f:
-                        cs, errs = self.compiler(f.read())
-                    for line in errs:
-                        print (line)
-                    if cs and not errs:
+                    try:
+                        cs = subprocess.check_output(self.compiler +
+                                [x]).decode('utf-8')
+                    except Exception as e:
+                        print ('\n\tCompilation of %s failed'%os.path.basename(x))
+                        print (e)
+                        if ignore_errors:
+                            with open(js, 'wb') as f:
+                                f.write('# Compilation from coffeescript failed')
+                        else:
+                            raise SystemExit(1)
+                    else:
                         with open(js, 'wb') as f:
                             f.write(cs.encode('utf-8'))
                         if opts.show_js:
                             self.show_js(js)
                             print ('#'*80)
                             print ('#'*80)
-                    else:
-                        print ('\n\tCompilation of %s failed'%os.path.basename(x))
-                        if ignore_errors:
-                            with open(js, 'wb') as f:
-                                f.write('# Compilation from coffeescript failed')
-                        else:
-                            raise SystemExit(1)
 
     def clean(self):
         for toplevel, dest in self.COFFEE_DIRS.iteritems():