Ubuntu 16.04 can't compile latest changeset on default branch

[Uwe Brauer]

>>> "MK" == Marcin Kasperski <Marcin.Kasperski at mekk.waw.pl> writes:

>> So the simple question is: can I compile it with python2.7 and if I can,
>> 
>> how do I configure the Makefile or any other relevant to take 2.7. I
>> can't find anything relevant in the Makefile.

> In general, yes. Of course Mercurial supports 2.7.

> Normal make uses PYTHON environment variable to let you decide.

> In `make deb` case it looks like somebody switched default to py3.
> Take a look at

>    contrib/packaging/debian/rules 

> (in mercurial sources). Those two lines are responsible:

>    export HGPYTHON3=1
>    export PYTHON=python3

> Remove first of them, change second to 
>    export PYTHON=python
> and you should build fine.


Thanks very much, 
I looked in that file and hg annotate tells me this

changeset:   43310:7574ccd87200
branch:      stable
user:        Denis Laxalde <denis at laxalde.org>
date:        Mon Oct 21 10:59:54 2019 +0200
files:       contrib/packaging/debian/control
             contrib/packaging/debian/rules
             tests/test-debian-packages.t
description:
packaging: upgrade Debian packaging to build with Python 3

Also drop the explicit "Depends: python" as debhelper will add it.

That explains it thanks very much! I just tried it out, it works.

What would be the problem to return to python 2.7?
Would it make mercurial slower?

In any case thanks

Uwe 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 5673 bytes
Desc: not available
URL: <http://lists.mercurial-scm.org/pipermail/mercurial/attachments/20200131/7b44e338/attachment.p7s>