python*-setuptools: add separate packages for pkg_resources module

The pkg_resources Python module is useful by itself, for example for
automatic loading of resources shipped in a Python package.
Add separate packages for it, so that users can depend on them
individually and avoid pulling in the entire setuptools, which
include scripts to download other packages, which might not be
desired on minimal images.

Other distributions like Debian and Ubuntu already split setuptools
and pkg-resources in this way.

The setuptools packages now depend on the new pkg-resources packages,
to avoid regressions for other packages that depend on them
already.

Signed-off-by: Luca Boccassi <luca.boccassi@microsoft.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/recipes-devtools/python/python-setuptools.inc b/meta/recipes-devtools/python/python-setuptools.inc
index 357aa07086ad3f58938420063c6631abce0a25d1..f49e078697d1ce180f3de8cebe6f72da5db309ab 100644 (file)
--- a/meta/recipes-devtools/python/python-setuptools.inc
+++ b/meta/recipes-devtools/python/python-setuptools.inc
@@ -37,3 +37,14 @@ do_install_prepend() {
 }
 
 BBCLASSEXTEND = "native nativesdk"
+
+# The pkg-resources module can be used by itself, without the package downloader
+# and easy_install. Ship it in a separate package so that it can be used by
+# minimal distributions.
+PACKAGES =+ "${PYTHON_PN}-pkg-resources "
+FILES_${PYTHON_PN}-pkg-resources = "${PYTHON_SITEPACKAGES_DIR}/pkg_resources/*"
+# Due to the way OE-Core implemented native recipes, the native class cannot
+# have a dependency on something that is not a recipe name. Work around that by
+# manually setting RPROVIDES.
+RDEPENDS_${PN}_append = " ${PYTHON_PN}-pkg-resources"
+RPROVIDES_append_class-native = " ${PYTHON_PN}-pkg-resources-native"