APKBUILD examples:Python: Difference between revisions

From Alpine Linux
(Declare common python dependencies inside top-level $depends)
(Do not specify arch= in subpackage)
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* If the package contains some compiled code (native extensions), then add <tt>arch="all"</tt> into the <tt>_py()</tt> function (between pkgdesc and depends).
* If the package doesn’t have any dependencies, then omit <tt>depends=""</tt> in the <tt>_py2()</tt> and <tt>_py3()</tt> functions.
* If the package doesn’t have any dependencies, then omit <tt>depends=""</tt> in the <tt>_py2()</tt> and <tt>_py3()</tt> functions.
* If the package contains some compiled code (native extensions), then replace the <tt>subpackages=</tt> line with: <pre>subpackages="py2-${pkgname#py-}:_py2:all py3-${pkgname#py-}:_py3:all"</pre>


Source located at [http://pypi.python.org PyPi]
Source located at [http://pypi.python.org PyPi]

Revision as of 22:56, 3 November 2016

A lot of Python packages use the setuptools or distutils framework. This mean that the build() and the package() section looks a bit different compared to an application which uses make.

pkgname="py3-foo"
...
depends="python3"
makedepends="python3-dev"
...

build() {
	cd "$builddir"
	python3 setup.py build
}

package() {
	cd "$builddir"
	python3 setup.py install --prefix=/usr --root="$pkgdir"
}

If Python package support both Python 2 and Python 3, then the Alpine package should provide both variants as py2- and py3- subpackages.

pkgname="py-foo"
_pkgname="PyFoo"
...
arch="noarch"
depends="py-bar"
makedepends="python2-dev python3-dev"
subpackages="py2-${pkgname#py-}:_py2 py3-${pkgname#py-}:_py3"
...

build() {
	cd "$builddir"
	python2 setup.py build || return 1
	python3 setup.py build || return 1
}

package() {
	mkdir -p "$pkgdir"
}

_py2() {
	replaces="$pkgname"
	depends="${depends//py-/py2-}"
	_py python2
}

_py3() {
	depends="${depends//py-/py3-}"
	_py python3
}

_py() {
	local python="$1"
	pkgdesc="$pkgdesc (for $python)"
	depends="$depends $python"
	install_if="$pkgname=$pkgver-r$pkgrel $python"

	cd "$builddir"
	$python setup.py install --prefix=/usr --root="$subpkgdir"
}
  • If the package doesn’t have any dependencies, then omit depends="" in the _py2() and _py3() functions.
  • If the package contains some compiled code (native extensions), then replace the subpackages= line with:
    subpackages="py2-${pkgname#py-}:_py2:all py3-${pkgname#py-}:_py3:all"

Source located at PyPi

_pkgname=ShortName
...
source="https://files.pythonhosted.org/packages/source/${_pkgname:0:1}/$_pkgname/$_pkgname-$pkgver.tar.gz"