Index: head/deskutils/calibre/files/patch-setup_build.py
===================================================================
--- head/deskutils/calibre/files/patch-setup_build.py	(revision 558219)
+++ head/deskutils/calibre/files/patch-setup_build.py	(revision 558220)
@@ -1,34 +1,10 @@
 --- setup/build.py.orig	2020-12-12 08:56:45 UTC
 +++ setup/build.py
-@@ -487,6 +487,7 @@ project-factory = "pyqtbuild:PyQtProject"
- 
- [tool.sip.project]
- sip-files-dir = "."
-+sip-module = "PyQt5.sip"
- 
- [tool.sip.bindings.pictureflow]
- headers = {ext.headers}
-@@ -495,6 +496,7 @@ exceptions = {needs_exceptions}
+@@ -495,6 +495,7 @@ exceptions = {needs_exceptions}
  include-dirs = {ext.inc_dirs}
  qmake-QT = ["widgets"]
  sip-file = "{os.path.basename(sipf)}"
 +tags = ["WS_X11"]
  ''')
          shutil.copy2(sipf, src_dir)
  
-@@ -523,6 +525,15 @@ sip-file = "{os.path.basename(sipf)}"
-         cwd = os.getcwd()
-         try:
-             os.chdir(os.path.join(src_dir, 'build'))
-+            if ext.needs_exceptions:
-+                # bug in sip-build
-+                for q in walk('.'):
-+                    if os.path.basename(q) in ('Makefile',):
-+                        with open(q, 'r+') as f:
-+                            raw = f.read()
-+                            raw = raw.replace('-fno-exceptions', '-fexceptions')
-+                            f.seek(0), f.truncate()
-+                            f.write(raw)
-             self.check_call([self.env.make] + ([] if iswindows else ['-j%d'%(os.cpu_count() or 1)]))
-             e = 'pyd' if iswindows else 'so'
-             m = glob.glob(f'{ext.name}/{ext.name}.*{e}')