* Stefano Rivera <stefa...@debian.org>, 2011-10-04, 01:19:
BTW, I'm slightly disturbed by the fact, that so many people believe
that a Python helper does code inspection (or maybe use some magical
means...) to generate python:Depends. It seems to be a new
phenomenon, I don't recall any questions like that a year ago or so.
I remember being confused about this ~5 years ago when I started
working on packaging Python stuff. Maybe it's just that there's an
upswing in new people recently?
I'm sure I did too.
I didn't! :P
Maybe it's because I did Perl stuff before, so I knew what dh_perl does
and I expected similar things from dh_py$HELPEROFCHOICE.
I knew that dh_perl doesn't do much magic, because it's succintly
explained in the manual page:
| The program will look at Perl scripts and modules in your package, and
| will use this information to generate a dependency on perl or perlapi.
| The dependency will be substituted into your package's control file
| wherever you place the token ${perl:Depends}.
Now let's compare it with what manual pages for Python helpers say about
python:Depends.
dh_python
=========
| The program will look at Python scripts and modules in your package,
| and will use this information to generate a dependency on python, with
| the current major version, or on pythonX.Y if your scripts or modules
| need a specific python version. The dependency will be substituted into
| your package's control file wherever you place the token
| ${python:Depends}.
dh_pysupport
============
| Appropriate dependencies on python-support, python and pythonX.Y are
| put in ${python:Depends}.
dh_pycentral
============
Nothing. No, seriously, there's not a single word about python:Depends.
Well, maybe except this:
| -Xitem, --exclude=item
| Exclude files that contain "item" anywhere in their filename from
| being taken into account to generate the python dependency. You
| may use this option multiple times to build up a list of things to
| exclude.
dh_python2
==========
| DESCRIPTION
| QUICK GUIDE FOR MAINTAINERS
[...]
| · add ${python:Depends} to Depends,
|
| NOTES
[...]
| dependencies
| dh_python2 tries to translate Python dependencies from
| requires.txt file to Debian dependencies, use
| debian/pydist-overrides or --no-guessing-deps option to override
| it. If you want dh_python2 to generate more strict dependencies
| (f.e. to avoid ABI problems) create debian/python-foo.pydist
| file. See /usr/share/doc/python-doc/README.PyDist (provided by
| python-doc package) for more information.
[...]
| OPTIONS
[...]
| --depends=DEPENDS
| translate given requirements into Debian dependencies
| and add them to ${python:Depends}. Use it for missing
| items in requires.txt
To summarize:
- python-support is a bit too hand-wavy.
- python-central is a complete failure.
- dh_python2 documents its fancy features, but not the basic
functionality.
- dh_python rules. ;P
--
Jakub Wilk
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