nix-review pr 68802 is successful now and xml2rfc works.

Thanks for checking the commit message, that's fixed, too.

That cairocffi update will help a lot with #68361! Thanks :-)

Everything okay? @Pandaman @vcunat @yrashk
It'd be really useful to have in 19.09 as it makes lots of packages build again.

Sadly a few of the packages don't have maintainers :( But the tests all run through fine, so that's good.

This PR has conflicts

An update to pythonPackages.cairocffi was already merged in #69256.
Needed to update pythonPackages.weasyprint now.

xml2rfc command still works.

Pushed to master with an additional fix

@globin Can you please explain your fix?

-  # ignore failing test cases
+  # excluded test needs the Ahem font
   checkPhase = ''
     runHook preCheck
-    pytest -k 'not test_table_vertical_align and not test_text_overflow_ellipsis and not test_text_overflow_clip'
+    pytest -k 'not test_font_stretch'
     runHook postCheck
   '';

Are the other tests succeeding for you?
On my machine test_font_stretch doesn't fail, but the others do.

After that patch everything worked for me

Are you building this derivation?

> nix-instantiate -A python3Packages.weasyprint
warning: you did not specify '--add-root'; the result might be removed by the garbage collector
/nix/store/d06ki3nzbmmwlbrzdk6hpsdvvv6h91zk-python3.7-weasyprint-50.drv

The derivation you mention builds on Hydra and also when I retry it locally.

19.09 seems the same for me ATM. (I don't know if Robin fixed it or it was OK already.)

Works for me too, now. Must've messed up something before.