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Re: [PATCH 2/2] gnu: libxml2: Build python bindings separately.
From: |
Mark H Weaver |
Subject: |
Re: [PATCH 2/2] gnu: libxml2: Build python bindings separately. |
Date: |
Sun, 31 May 2015 12:57:12 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux) |
宋文武 <address@hidden> writes:
> Mark H Weaver <address@hidden> writes:
>
>> 宋文武 <address@hidden> writes:
>>
>>> * gnu/packages/xml.scm (libxml2)[native-inputs]: Remove python.
>>> [arguments]: Remove.
>>> (python-libxml2, python2-libxml): New variables.
>>> ---
>>> gnu/packages/xml.scm | 53
>>> ++++++++++++++++++++++++++++++----------------------
>>> 1 file changed, 31 insertions(+), 22 deletions(-)
>>>
>>> diff --git a/gnu/packages/xml.scm b/gnu/packages/xml.scm
>>> index a4c81b2..22d4e52 100644
>>> --- a/gnu/packages/xml.scm
>>> +++ b/gnu/packages/xml.scm
>>
>> [...]
>>
>>> +(define-public python2-libxml
>>> + (package-with-python2 python-libxml2))
>>> +
>>
>> Due to non-obvious complications arising from the fact that xml.scm and
>> python.scm are mutually dependent on each other, we can't use
>> 'package-with-python2' from xml.scm. For now, I suggest moving it to
>> python.scm, where all other uses of 'package-with-python2' are currently
>> located.
>>
>> For an explanation, see:
>>
>> https://lists.gnu.org/archive/html/guix-devel/2014-12/msg00355.html
> Thanks for explainging, but when I put it into python.scm,
> I got "Unbound variable: libxml2" when running:
> $ ./pre-inst-env guix package -i python2-libxml
> or:
> $ make
> but not:
> $ ./pre-inst-env guix build python2-libxml
>
> Any ideas? Thanks!
It turns out that 'package-with-python2' is no longer exported from
(gnu packages python), but rather from (guix build-system python) which
is not part of any cycles, so it is now okay to use 'package-with-python2'
from other modules.
In fact, because of the (inherit libxml2) in 'python-libxml2', these
packages should be in xml.scm, right where you had put them -- or at
least not in any other module that shares a cycle with xml.scm -- so
please disregard my suggestion that they should be moved.
However, I just noticed one minor mispelling: the variable should be
named 'python2-libxml2', not 'python2-libxml'.
Thanks!
Mark
Re: [PATCH 1/2] gnu: libxml2: Update to 2.9.2., Mark H Weaver, 2015/05/30