guix build python2 --with-source fails?

guix build python2 --with-source fails?

[zimoun]

Dear,

As an exercise about rebuilding old versions (e.g. used by old
scientific paper), I have tried to rebuild say the very old Python 2.5.

My naive attempt is to start with:

--8<---------------cut here---------------start------------->8---
wget https://www.python.org/ftp/python/2.5.2/Python-2.5.2.tgz
tar -xzvf Python-2.5.2.tgz

guix build python2 --with-source=/tmp/Python-2.5.2
guix build: warning: transformation 'with-source' had no effect on python2@2.7.17
The following graft will be made:
   /gnu/store/ck7swzbk6h7mc7splsih93xsixc6z4ni-python2-2.7.17.drv
[...]
--8<---------------cut here---------------end--------------->8---

Why is it not possible to use '--with-source' with the package python2?
I was expecting fail to build, not fail to apply the transformation.

I mean, I thought that "guix build foo --with-source" was somehow
equivalent to:

--8<---------------cut here---------------start------------->8---
cd /tmp/Python-2.5.2
guix environment -C python2
./configure
make
--8<---------------cut here---------------end--------------->8---

which works.  Is it not?


Thank you in advance.

All the best,
simon

Re: guix build python2 --with-source fails?

[Tobias Geerinckx-Rice]

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Simon,

zimoun 写道：
> Why is it not possible to use '--with-source' with the package 
> python2?

λ mv tmp/{Python,python2}-2.5.2
λ guix build python2 --with-source=/tmp/python2-2.5.2
substitute: updating substitutes from 
'https://guix.tobias.gr'... 100.0%
substitute: updating substitutes from 
'https://ci.guix.gnu.org'... 100.0%
^C

Guix expects the source directory to start with the package NAME. 
There's a very recent bug report asking to support arbitrary 
--with-source=NAME=FILE.

Kind regards,

T G-R

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Re: guix build python2 --with-source fails?

[zimoun]

Hi Tobias,

On Thu, 18 Jun 2020 at 13:39, Tobias Geerinckx-Rice <me@tobias.gr> wrote:

> Guix expects the source directory to start with the package NAME.

Ah, I did not know.  Thank you.  Now it fails as expected. :-)

> There's a very recent bug report asking to support arbitrary 
> --with-source=NAME=FILE.

I missed it.  Thanks for the pointer.

Well, it was even expecting that it works as
'--with-source=https://example.org/foo.tgz'.


All the best,
simon