bug#37373: python-ipython-documentation build is not reproducible

[Maxim Cournoyer]

Hello Gábor,

Gábor Boskovits <address@hidden> writes:

> Hello,
>
>
> Maxim Cournoyer <address@hidden> ezt írta (időpont: 2019. szept.
> 11., Sze, 2:30):
>
>> Here's the diff produced by diffoscope:
>>
>> ---
>> /gnu/store/crwhhm91cgms8fnydvqkmbqbjrypqv48-python-ipython-documentation-7.5.0
>> +++
>> /gnu/store/crwhhm91cgms8fnydvqkmbqbjrypqv48-python-ipython-documentation-7.5.0-check
>> ├── share
>> │ ├── doc
>> │ │ ├── python-ipython-documentation-7.5.0
>> │ │ │ ├── html
>> │ │ │ │ ├── sphinxext.html
>> │ │ │ │ │┄ xxd not available in path. Falling back to Python hexlify.
>> │ │ │ │ │ @@ -1182,29 +1182,29 @@
>> │ │ │ │ │  3d226e223e6461746574696d653c2f7370616e3e3c7370616e20636c6173733d
>> │ │ │ │ │  226f223e2e3c2f7370616e3e3c7370616e20636c6173733d226e223e64617465
>> │ │ │ │ │  74696d653c2f7370616e3e3c7370616e20636c6173733d226f223e2e3c2f7370
>> │ │ │ │ │  616e3e3c7370616e20636c6173733d226e223e6e6f773c2f7370616e3e3c7370
>> │ │ │ │ │  616e20636c6173733d2270223e28293c2f7370616e3e0a3c7370616e20636c61
>> │ │ │ │ │  73733d226770223e2020202e2e2e3a203c2f7370616e3e0a3c7370616e20636c
>> │ │ │ │ │  6173733d22676f223e000000000000000000004f75745b325d3a206461746574
>> │ │ │ │ │ -696d652e6461746574696d6528323031392c20392c2031312c20302c2031362c
>> │ │ │ │ │ -2033372c20363833363634293c2f7370616e3e0a3c2f7072653e3c2f6469763e
>> │ │ │ │ │ +696d652e6461746574696d6528323031392c20392c2031312c20302c2032312c
>> │ │ │ │ │ +2031322c20353230363534293c2f7370616e3e0a3c2f7072653e3c2f6469763e
>> │ │ │ │ │  0a3c2f6469763e0a3c703e497420737570706f7274732049507974686f6e2063
>> │ │ │ │ │  6f6e737472756374207468617420706c61696e0a507974686f6e20646f657320
>> │ │ │ │ │  6e6f7420756e6465727374616e6420286c696b65206d6167696373293a3c2f70
>> │ │ │ │ │  3e0a3c64697620636c6173733d22686967686c696768742d69707974686f6e20
>> │ │ │ │ │  6e6f7472616e736c617465223e3c64697620636c6173733d22686967686c6967
>> │ │ │ │ │  6874223e3c7072653e3c7370616e3e3c2f7370616e3e3c7370616e20636c6173
>> │ │ │ │ │  733d226770223e496e205b335d3a203c2f7370616e3e3c7370616e20636c6173
>> │ │ │ │ │  733d226b6e223e696d706f72743c2f7370616e3e203c7370616e20636c617373
>> │ │ │ │ │  3d226e6e223e74696d653c2f7370616e3e0a0a3c7370616e20636c6173733d22
>> │ │ │ │ │  6770223e496e205b345d3a203c2f7370616e3e3c7370616e20636c6173733d22
>> │ │ │ │ │  6f223e253c2f7370616e3e3c7370616e20636c6173733d226b223e74696d6569
>> │ │ │ │ │  743c2f7370616e3e2074696d652e736c65657028302e3035290a3c7370616e20
>> │ │ │ │ │ -636c6173733d22676f223e35302e31206d73202b2d20322e3331207573207065
>> │ │ │ │ │ +636c6173733d22676f223e35302e31206d73202b2d20322e3135207573207065
>> │ │ │ │ │  72206c6f6f7020286d65616e202b2d207374642e206465762e206f6620372072
>> │ │ │ │ │  756e732c203130206c6f6f70732065616368293c2f7370616e3e0a3c2f707265
>> │ │ │ │ │  3e3c2f6469763e0a3c2f6469763e0a3c703e546869732077696c6c20616c736f
>> │ │ │ │ │  20737570706f727420746f702d6c6576656c206173796e63207768656e207573
>> │ │ │ │ │  696e672049507974686f6e20372e302b3c2f703e0a3c64697620636c6173733d
>> │ │ │ │ │  22686967686c696768742d69707974686f6e206e6f7472616e736c617465223e
>> │ │ │ │ │  3c64697620636c6173733d22686967686c69676874223e3c7072653e3c737061
>>
>>
> As far as I can see from the header this is a html file, correct me if I am
> wrong. Did you try to look at the file as text?
> It might give a more useful diff.

Indeed! I'm surprised that diffoscope chose to reprosent an html file as
a binary file... Here's a more useful diff:

--8<---------------cut here---------------start------------->8---
diff -r 
/gnu/store/crwhhm91cgms8fnydvqkmbqbjrypqv48-python-ipython-documentation-7.5.0/share/doc/python-ipython-documentation-7.5.0/html/sphinxext.html
 
/gnu/store/crwhhm91cgms8fnydvqkmbqbjrypqv48-python-ipython-documentation-7.5.0-check/share/doc/python-ipython-documentation-7.5.0/html/sphinxext.html
624c624
< <span class="go">Out[2]: datetime.datetime(2019, 9, 11, 0, 16, 37, 
683664)</span>
---
> <span class="go">Out[2]: datetime.datetime(2019, 9, 11, 1, 19, 45, 
> 915814)</span>
632c632
< <span class="go">50.1 ms +- 2.31 us per loop (mean +- std. dev. of 7 runs, 10 
loops each)</span>
---
> <span class="go">50.1 ms +- 11 us per loop (mean +- std. dev. of 7 runs, 10 
> loops each)</span>
--8<---------------cut here---------------end--------------->8---