try to deal with missing fonts

screenless/bureau/bureau.py

@@ -1,5 +1,6 @@
 # bureau
 import functools
+import glob
 import inspect
 import io
 import json
@@ -354,6 +355,10 @@ class Bureau(object):
         pdfpath = tempfile.mkstemp(".pdf")[1]
         self.log.debug("rendering to: " + pdfpath)
         fontconfig = FontConfiguration()
+        fontsdir = os.path.join(self.mdir, "fonts")
+        for font in glob.glob(fontsdir + ".otf"):
+            fontconfig.add_font_face("file://" + font,
+                                     weasyprint.default_url_fetcher)
         weasyprint.HTML(string=templ.render_unicode(**kwargs)).write_pdf(pdfpath, font_config=fontconfig)
         subprocess.call("lpr -o sides=two-sided-long-edge -o InputSlot=Upper " + pdfpath, shell=True)