Nixpkgs: pythonPackages.cairocffi is broken

Created on 28 May 2018 · 11Comments · Source: NixOS/nixpkgs

Issue description

A test of cairocffi fails due to a segmentation fault, causing building cairocffi impossible.

Steps to reproduce

Clone the latest upstream. Then,

$ nix-build -A pythonPackages.cairocffi

$ nix-build -A python3Packages.cairocffi

Technical details

Logs:
(python2) https://pastebin.com/BEig2Li2
(python3) https://pastebin.com/mseEACEj

Both of them fails at the same line.

Please run nix-shell -p nix-info --run "nix-info -m" and paste the
results.

$ nix-shell -p nix-info --run 'nix-info -m'
 - system: `"x86_64-linux"`
 - host os: `Linux 4.14.29, NixOS, 18.09pre133640.ea145b68a01 (Jellyfish)`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.0`
 - channels(pan): `"nixpkgs-18.09pre133932.ee28e35ba37"`
 - channels(root): `"nixos-18.09pre133640.ea145b68a01"`
 - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs`

Source

pandaman64

All 11 comments

According to git bisect, b9219912de7ea94e7d420f3846d56a79f67be373 introduced this bug.

pandaman64 on 29 May 2018

@pandaman64 Perhaps your find warrants an upstream bug report? It looks like this is an ABI incompatibility that needs to be addressed in cairocffi.

veprbl on 29 May 2018

@jtojnar do you mind dealing with this issue?

pandaman64 on 29 May 2018

Not sure how to fix it. For what is worth, Arch uses cairo 1.15 as well, and they allow the tests to fail https://www.archlinux.org/packages/community/any/python-cairocffi/. Issue should probably opened with https://github.com/Kozea/cairocffi/issues

jtojnar on 29 May 2018

Should be fixed by https://github.com/NixOS/nixpkgs/commit/ef695239a07cc7e16b9d4687e44349ca33be15ae

jtojnar on 1 Jun 2018

🎉1

Unfortunately, there is another failing test remaining after the commit.

$ nix-build -A python3Packages.cairocffi
...a lot of lines...
../../nix/store/kxliv1nymfjw3yvrab0lp0sz6nbj065w-python3.6-cairocffi-0.8.0/lib/python3.6/site-packages/cairocffi/test_pixbuf.py . [ 92%]
x..                                                                      [100%]

=================================== FAILURES ===================================
_______________________________ test_pdf_surface _______________________________

    def test_pdf_surface():
        with temp_directory() as tempdir:
            filename = os.path.join(tempdir, 'foo.pdf')
            filename_bytes = filename.encode(sys.getfilesystemencoding())
            file_obj = io.BytesIO()
            for target in [filename, filename_bytes, file_obj, None]:
                surface = PDFSurface(target, 123, 432)
                surface.finish()
            with open(filename, 'rb') as fd:
                assert fd.read().startswith(b'%PDF')
            with open(filename_bytes, 'rb') as fd:
                assert fd.read().startswith(b'%PDF')
            pdf_bytes = file_obj.getvalue()
            assert pdf_bytes.startswith(b'%PDF')
            assert b'/MediaBox [ 0 0 123 432 ]' in pdf_bytes
>           assert pdf_bytes.count(b'/Type /Page\n') == 1
E           AssertionError: assert 0 == 1
E            +  where 0 = <built-in method count of bytes object at 0xa5d6b0>(b'/Type /Page\n')
E            +    where <built-in method count of bytes object at 0xa5d6b0> = b'%PDF-1.5\n%\xb5\xed\xae\xfb\n4 0 obj\n<< /Length 5 0 R\n   /Filter /FlateDecode\n>>\nstream\nx\x9c3T0\x00B]C abl\xa4...000444 00000 n \n0000000555 00000 n \ntrailer\n<< /Size 8\n   /Root 7 0 R\n   /Info 6 0 R\n>>\nstartxref\n607\n%%EOF\n'.count

/nix/store/kxliv1nymfjw3yvrab0lp0sz6nbj065w-python3.6-cairocffi-0.8.0/lib/python3.6/site-packages/cairocffi/test_cairo.py:295: AssertionError
========== 1 failed, 40 passed, 1 skipped, 1 xfailed in 0.38 seconds ===========
builder for '/nix/store/7v7pklw0iqglnl6wb4ycmr1c4mx92hx0-python3.6-cairocffi-0.8.0.drv' failed with exit code 1

pandaman64 on 2 Jun 2018

@orivej Is this another cairo bug?

jtojnar on 2 Jun 2018

Maybe not, I have not seen this before.