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============
dh_python3
============
-----------------------------------------------------------------------------------
calculates Python dependencies, adds maintainer scripts to byte compile files, etc.
-----------------------------------------------------------------------------------
:Manual section: 1
:Author: Piotr Ożarowski, 2012-2013
SYNOPSIS
========
dh_python3 -p PACKAGE [-V [X.Y][-][A.B]] DIR [-X REGEXPR]
DESCRIPTION
===========
QUICK GUIDE FOR MAINTAINERS
---------------------------
* build depend on dh-python
* build-depend on python3 (Python application) or python3-all (Python module)
or python3-all-dev (Python extension),
* if necessary, describe supported Python 3 versions via X-Python3-Version field
in debian/control,
* build module/application using its standard build system (pybuild wrapper
recommended, see pybuild.1 for more details), remember to build extensions
for all supported Python 3 versions (loop over ``py3versions -vr``),
* install files to the *standard* locations, add `--install-layout=deb` to
setup.py's install command if your package is using distutils,
* add `python3` to dh's --with option, or:
* `include /usr/share/cdbs/1/class/python-distutils.mk` in debian/rules and
depend on `cdbs (>= 0.4.90)`, or:
* call ``dh_python3`` in the `binary-*` target,
* add `${python3:Depends}` to Depends
NOTES
-----
dependencies
~~~~~~~~~~~~
dh_python3 tries to translate Python dependencies from `Requires-Dist`
entries in `dist-info` or `requires.txt` contents in `egg-info` to
Debian dependencies.
In many cases, this works without any additional configuration because
dh_python3 comes with a build-in mapping of Python module names to
Debian packages that is periodically regenerated from the Debian
archive. By default, the version information in the Python dependencies is
discarded. If you want dh_python3 to generate more strict dependencies (e.g. to
avoid ABI problems), or if the automatic mapping does not work correctly for
your package, you have to provide dh_python3 with additional rules for the
translation of Python module to Debian package dependencies.
For a package *python3-foo* that depends on a package *python3-bar*, there are
two files that may provide such rules:
#. If the *python3-foo* source package ships with a
`debian/py3dist-overrides` file, this file is used by dh_python3
during the build of *python3-foo*.
#. If the *python3-bar* source package ships with a
`debian/python3-bar.pydist` file (and uses dh_python3), this file
will be included in the binary package as
`/usr/share/dh-python/dist/cpython3/python3-bar`. During the build
of *python3-foo*, dh_python3 will then find and use the file.
Both files have the same format described in
`/usr/share/doc/dh-python/README.PyDist`. If all you want is to generate
versioned dependencies (and assuming that the *python3-bar* package provides
the *pybar* Python module), in most cases it will be sufficient to put the line
``pybar python3-bar; PEP386`` into either of the above files.
private dirs
~~~~~~~~~~~~
`/usr/share/foo`, `/usr/share/games/foo`, `/usr/lib/foo` and
`/usr/lib/games/foo` private directories are scanned for Python files
by default (where `foo` is binary package name). If your package ships
Python files in some other directory, add another dh_python3 call in
debian/rules with directory name as an argument - you can use different set of
options in this call. If you need to change options (f.e. a list of supported
Python 3 versions) for a private directory that is checked by default, invoke
dh_python3 with --skip-private option and add another call with a path to this
directory and new options.
debug packages
~~~~~~~~~~~~~~
In binary packages which name ends with `-dbg`, all files in
`/usr/lib/python3/dist-packages/` directory
that have extensions different than `so` or `h` are removed by default.
Use --no-dbg-cleaning option to disable this feature.
pyinstall files
~~~~~~~~~~~~~~~
Files listed in debian/pkg.pyinstall file will be installed as public modules
(i.e. into .../dist-packages/ directory) for all requested Python versions.
Syntax: ``path/to/file [NAMESPACE] [VERSION_RANGE]``
debian directory is automatically removed from the path, so you can place your
files in debian/ directory and install them from this location (if you want to
install them in "debian" namespace, set NAMESPACE to debian). If NAMESPACE is
set, all listed files will be installed in .../dist-packages/NAMESPACE/
directory.
Examples:
* ``foo.py`` installs .../dist-packages/foo.py for all supported Python versions
* ``foo/bar.py 3.3-`` installs .../dist-packages/foo/bar.py for versions >= 3.3
* ``foo/bar.py spam`` installs .../dist-packages/spam/bar.py
* ``debian/*.py spam.egg 3.2`` installs .../python3.2/dist-packages/spam/egg/\*.py
files
pyremove files
~~~~~~~~~~~~~~
If you want to remove some public modules (i.e. files in .../dist-packages/
directory) installed by build system (from all supported Python versions or
only from a subset of these versions), add them to debian/pkg.pyremove file.
Examples:
* ``*.pth`` removes .pth files from .../dist-packages/
* ``bar/baz.py 3.2`` removes .../python3.2/dist-packages/bar/baz.py
bcep files
~~~~~~~~~~
Byte-compilation exception patterns can be described in these files. Use it if
you want py3compile to skip specific files. This is the only way to skip .py
files in …/dist-packages/ directory (as `--exclude` passed to py3compile in
postinst is not used in rtupdate scripts and thus this option cannot be used
for non-private modules).
``re|-3.6|/usr/lib/python3/dist-packages/jinja2|.*/async(foo|bar).py``
will skip byte-compilation of `asyncfoo.py` and `asyncbar.py` in
`/usr/lib/python3/dist-packages/jinja2/` directory for each interpreter that
doesn't support `async` keyword (introduced in Python 3.6).
If you want to skip byte-compilation in a subdirectory for all interpreters, use:
``dir|-4.0|/usr/lib/python3/dist-packages/foo/tests/``.
VERSION_RANGE (`-4.0` in the example) is described in `README.PyDist` file.
`debian/python3-foo.bcep` file from source package will be included in the
binary package as `/usr/share/python3/bcep/python3-foo.bcep`
overriding supported / default Python versions
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
If you want to override system's list of supported Python versions or the
default one (f.e. to build a package that includes symlinks for older version
of Python or compile .py files only for given interpreter version), you can do
that via `DEBPYTHON3_SUPPORTED` and/or `DEBPYTHON3_DEFAULT` env. variables.
Example: ``3.2,3.3`` limits the list of supported Python versions to Python 3.2
and Python 3.3.
OPTIONS
=======
--version show program's version number and exit
-h, --help show help message and exit
--no-guessing-deps disable guessing dependencies
--no-dbg-cleaning do not remove any files from debug packages
--no-ext-rename do not add magic tags nor multiarch tuples to extension file names
--no-shebang-rewrite do not rewrite shebangs
--skip-private don't check private directories
-v, --verbose turn verbose mode on
-i, --indep act on architecture independent packages
-a, --arch act on architecture dependent packages
-q, --quiet be quiet
-p PACKAGE, --package=PACKAGE act on the package named PACKAGE
-N NO_PACKAGE, --no-package=NO_PACKAGE do not act on the specified package
--remaining-packages Do not act on the packages which have already
been acted on by this command earlier in the same override.
-V VERSION_RANGE specify list of supported Python 3 versions. See
py3compile(1) for examples
-X REGEXPR, --exclude=REGEXPR exclude items that match given REGEXPR. You may
use this option multiple times to build up a list of things to exclude from
byte-compilation in private dirs. See also `bcep files`.
--compile-all compile all files from given private directory in postinst/rtupdate
not just the ones provided by the package (i.e. do not pass the --package
parameter to py3compile/py3clean)
--accept-upstream-versions accept upstream versions while translating
Python dependencies into Debian ones
--depends=DEPENDS translate given requirements into Debian dependencies
and add them to ${python3:Depends}. Use it for missing items in
`requires.txt` / `Requires-Dist`.
--depends-section=SECTION translate requirements from given extra
sections of `requres.txt` / `Requires-Dist` into Debian dependencies
and add them to ${python3:Depends}. May be repeated for multiple
sections.
--recommends=RECOMMENDS translate given requirements into Debian dependencies
and add them to ${python3:Recommends}
--recommends-section=SECTION translate requirements from given extra
sections of `requires.txt` / `Requires-Dist` into Debian dependencies
and add them to ${python3:Recommends}. May be repeated for multiple
sections.
--suggests=SUGGESTS translate given requirements into Debian dependencies
and add them to ${python3:Suggests}
--suggests-section=SECTION translate requirements from given extra
sections of `requires.txt` / `Requires-Dist` into Debian dependencies
and add them to ${python3:Suggests}. May be repeated for multiple
sections.
--requires=FILENAME translate requirements from given file(s) into Debian
dependencies and add them to ${python3:Depends}
--shebang=COMMAND use given command as shebang in scripts
--ignore-shebangs do not translate shebangs into Debian dependencies
SEE ALSO
========
* /usr/share/doc/python3/python-policy.txt.gz
* /usr/share/doc/dh-python/README.PyDist
* pybuild(1)
* py3compile(1), py3clean(1)
* pycompile(1), pyclean(1)
* http://deb.li/dhp3 - most recent version of this document
|
