Tornado 4.3 is missing python2 RDEPENDS

Tornado 4.3 needs a couple more backport modules to prevent tornado/gen.py from bombing on import errors when running on python2 rather than python3.4

ImportError: No module named singledispatch

ImportError: No module named backports_abc

S. Lockwood-Childs (3):
python-backports-abc: initial recipe for version 0.4
python-singledispatch: initial recipe for version 3.4.0.3
python-tornado: add missing python2 runtime deps

 .../python/python-backports-abc_0.4.bb                 | 18 ++++++++++++++++++
 .../python/python-singledispatch_3.4.0.3.bb            | 13 +++++++++++++
 .../recipes-devtools/python/python-tornado_4.3.bb      |  2 +-
 3 files changed, 32 insertions(+), 1 deletion(-)
 create mode 100644 meta-python/recipes-devtools/python/python-backports-abc_0.4.bb
 create mode 100644 meta-python/recipes-devtools/python/python-singledispatch_3.4.0.3.bb

1.9.1

This package backports Python 3.4 collections.abc to earlier Python versions.

It is being added as one of the two missing backport modules that Tornado 4.3 needs in order to prevent tornado/gen.py from bombing on import errors when running on python2 rather than python3.4

ImportError: No module named backports_abc

---
 .../python/python-backports-abc_0.4.bb                 | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 meta-python/recipes-devtools/python/python-backports-abc_0.4.bb

new file mode 100644
index 0000000..6a4d267
@@ -0,0 +1,18 @@
+SUMMARY = "collections.abc from Python 3.4"
+DESCRIPTION = "A backport of recent additions to the 'collections.abc' module"
+
+LICENSE = "PSF"
+LIC_FILES_CHKSUM = "file://${WORKDIR}/LICENSE;md5=dd98d01d471fac8d8dbdd975229dba03"
+
+# pypi package doesn't have valid entry for license
+SRC_URI += "https://raw.githubusercontent.com/cython/backports_abc/master/LICENSE;name=license"
+
+SRC_URI[md5sum] = "0b65a216ce9dc9c1a7e20a729dd7c05b"
+SRC_URI[sha256sum] = "8b3e4092ba3d541c7a2f9b7d0d9c0275b21c6a01c53a61c731eba6686939d0a5"
+SRC_URI[license.md5sum] = "dd98d01d471fac8d8dbdd975229dba03"
+SRC_URI[license.sha256sum] = "0a4f3b38055f50f047a42521568fa6ddb9a5976c2884f6ae138796d0f71150ca"
+
+
+
+PYPI_PACKAGE = "backports_abc"
+inherit pypi setuptools

1.9.1

Beautiful log message :-)

------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------

This package backports functools.singledispatch from Python 3.4 to earlier Python versions.

It is being added as one of the two missing backport modules that Tornado 4.3 needs in order to prevent tornado/gen.py from bombing on import errors when running on python2 rather than python3.4

ImportError: No module named singledispatch

---
 .../python/python-singledispatch_3.4.0.3.bb                 | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 meta-python/recipes-devtools/python/python-singledispatch_3.4.0.3.bb

new file mode 100644
index 0000000..87f46e5
@@ -0,0 +1,13 @@
+SUMMARY = "functools.singledispatch from Python 3.4"
+DESCRIPTION = "PEP 443 proposed to expose a mechanism in the functools standard library module \
+in Python 3.4 that provides a simple form of generic programming known as single-dispatch \
+generic functions.  This library is a backport of this functionality to Python 2.6 - 3.3"
+
+LICENSE = "Apache-2.0"
+LIC_FILES_CHKSUM = "file://README.rst;md5=ee3cd67264adc7eb07981f3644dc17dc"
+
+SRC_URI[md5sum] = "af2fc6a3d6cc5a02d0bf54d909785fcb"
+SRC_URI[sha256sum] = "5b06af87df13818d14f08a028e42f566640aef80805c3b50c5056b086e3c2b9c"
+
+PYPI_PACKAGE = "singledispatch"
+inherit pypi setuptools

1.9.1

Tornado 4.3 needs backports_abc and singledispatch backport modules at runtime to prevent tornado/gen.py from bombing on import errors when running on python2 rather than python3.4

---
 meta-python/recipes-devtools/python/python-tornado_4.3.bb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index 55a48b8..d30f88f 100644
@@ -1,3 +1,3 @@
 inherit pypi setuptools
 require python-tornado.inc
-RDEPENDS_${PN} += "${PYTHON_PN}-backports-ssl"
+RDEPENDS_${PN} += "${PYTHON_PN}-backports-ssl ${PYTHON_PN}-backports-abc ${PYTHON_PN}-singledispatch"

1.9.1