build: generate sourcemap for CSS files (#49794)

MANIFEST.in

@@ -7,6 +7,6 @@ recursive-include data/web/ *.html *.css *.png
 recursive-include data/themes/default/ *.html *.css *.png *.gif *.jpg *.js *.ezt *.xml
 recursive-include data/themes/alto/ *.html *.css *.png *.gif *.jpg *.js *.ezt *.xml
 recursive-include data/vendor/ *.dat
-recursive-include wcs/qommon/static/ *.css *.scss *.png *.gif *.jpg *.js *.eot *.svg *.ttf *.woff
+recursive-include wcs/qommon/static/ *.css *.scss *.png *.gif *.jpg *.js *.eot *.svg *.ttf *.woff *.map
 recursive-include wcs/templates *.html *.txt
 recursive-include wcs/qommon/templates *.html *.txt

setup.py

@@ -53,13 +53,9 @@ class compile_scss(Command):
         pass
 
     def run(self):
-        sass_bin = None
-        for program in ('sassc', 'sass'):
-            sass_bin = find_executable(program)
-            if sass_bin:
-                break
+        sass_bin = find_executable('sassc')
         if not sass_bin:
-            raise CompileError('A sass compiler is required but none was found.  See sass-lang.com for choices.')
+            raise CompileError('sassc is required but was not found.')
 
         for path, dirnames, filenames in os.walk('wcs'):
             for filename in filenames:
@@ -67,7 +63,10 @@ class compile_scss(Command):
                     continue
                 if filename.startswith('_'):
                     continue
-                subprocess.check_call([sass_bin, '%s/%s' % (path, filename),
+                subprocess.check_call([
+                    sass_bin,
+                    '--sourcemap',
+                    '%s/%s' % (path, filename),
                     '%s/%s' % (path, filename.replace('.scss', '.css'))])
 
 
@@ -97,7 +96,8 @@ class eo_sdist(sdist):
 
 def data_tree(destdir, sourcedir):
     extensions = ['.css', '.png', '.jpeg', '.jpg', '.gif', '.xml', '.html',
-            '.js', '.ezt', '.dat', '.eot', '.svg', '.ttf', '.woff']
+            '.js', '.ezt', '.dat', '.eot', '.svg', '.ttf', '.woff', '.scss',
+            '.map']
     r = []
     for root, dirs, files in os.walk(sourcedir):
         l = [os.path.join(root, x) for x in files if os.path.splitext(x)[1] in extensions]