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+.. SPDX-License-Identifier: CC-BY-SA-2.0-UK
+
+Release 1.3 (danny)
+===================
+
+This section provides migration information for moving to the Yocto
+Project 1.3 Release (codename "danny") from the prior release.
+
+.. _1.3-local-configuration:
+
+Local Configuration
+-------------------
+
+Differences include changes for
+:term:`SSTATE_MIRRORS` and ``bblayers.conf``.
+
+.. _migration-1.3-sstate-mirrors:
+
+SSTATE_MIRRORS
+~~~~~~~~~~~~~~
+
+The shared state cache (sstate-cache), as pointed to by
+:term:`SSTATE_DIR`, by default now has two-character
+subdirectories to prevent issues arising from too many files in the same
+directory. Also, native sstate-cache packages, which are built to run on
+the host system, will go into a subdirectory named using the distro ID
+string. If you copy the newly structured sstate-cache to a mirror
+location (either local or remote) and then point to it in
+:term:`SSTATE_MIRRORS`, you need to append "PATH"
+to the end of the mirror URL so that the path used by BitBake before the
+mirror substitution is appended to the path used to access the mirror.
+Here is an example::
+
+   SSTATE_MIRRORS = "file://.* http://someserver.tld/share/sstate/PATH"
+
+.. _migration-1.3-bblayers-conf:
+
+bblayers.conf
+~~~~~~~~~~~~~
+
+The ``meta-yocto`` layer consists of two parts that correspond to the
+Poky reference distribution and the reference hardware Board Support
+Packages (BSPs), respectively: ``meta-yocto`` and ``meta-yocto-bsp``.
+When running BitBake for the first time after upgrading, your
+``conf/bblayers.conf`` file will be updated to handle this change and
+you will be asked to re-run or restart for the changes to take effect.
+
+.. _1.3-recipes:
+
+Recipes
+-------
+
+Differences include changes for the following:
+
+.. _migration-1.3-python-function-whitespace:
+
+Python Function Whitespace
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+All Python functions must now use four spaces for indentation.
+Previously, an inconsistent mix of spaces and tabs existed, which made
+extending these functions using ``_append`` or ``_prepend`` complicated
+given that Python treats whitespace as syntactically significant. If you
+are defining or extending any Python functions (e.g.
+``populate_packages``, ``do_unpack``, ``do_patch`` and so forth) in
+custom recipes or classes, you need to ensure you are using consistent
+four-space indentation.
+
+.. _migration-1.3-proto=-in-src-uri:
+
+proto= in SRC_URI
+~~~~~~~~~~~~~~~~~
+
+Any use of ``proto=`` in :term:`SRC_URI` needs to be
+changed to ``protocol=``. In particular, this applies to the following
+URIs:
+
+-  ``svn://``
+
+-  ``bzr://``
+
+-  ``hg://``
+
+-  ``osc://``
+
+Other URIs were already using ``protocol=``. This change improves
+consistency.
+
+.. _migration-1.3-nativesdk:
+
+nativesdk
+~~~~~~~~~
+
+The suffix ``nativesdk`` is now implemented as a prefix, which
+simplifies a lot of the packaging code for ``nativesdk`` recipes. All
+custom ``nativesdk`` recipes, which are relocatable packages that are
+native to :term:`SDK_ARCH`, and any references need to
+be updated to use ``nativesdk-*`` instead of ``*-nativesdk``.
+
+.. _migration-1.3-task-recipes:
+
+Task Recipes
+~~~~~~~~~~~~
+
+"Task" recipes are now known as "Package groups" and have been renamed
+from ``task-*.bb`` to ``packagegroup-*.bb``. Existing references to the
+previous ``task-*`` names should work in most cases as there is an
+automatic upgrade path for most packages. However, you should update
+references in your own recipes and configurations as they could be
+removed in future releases. You should also rename any custom ``task-*``
+recipes to ``packagegroup-*``, and change them to inherit
+``packagegroup`` instead of ``task``, as well as taking the opportunity
+to remove anything now handled by ``packagegroup.bbclass``, such as
+providing ``-dev`` and ``-dbg`` packages, setting
+:term:`LIC_FILES_CHKSUM`, and so forth. See the
+":ref:`packagegroup.bbclass <ref-classes-packagegroup>`" section for
+further details.
+
+.. _migration-1.3-image-features:
+
+IMAGE_FEATURES
+~~~~~~~~~~~~~~
+
+Image recipes that previously included ``apps-console-core`` in
+:term:`IMAGE_FEATURES` should now include ``splash``
+instead to enable the boot-up splash screen. Retaining
+``apps-console-core`` will still include the splash screen but generates a
+warning. The ``apps-x11-core`` and ``apps-x11-games`` :term:`IMAGE_FEATURES`
+features have been removed.
+
+.. _migration-1.3-removed-recipes:
+
+Removed Recipes
+~~~~~~~~~~~~~~~
+
+The following recipes have been removed. For most of them, it is
+unlikely that you would have any references to them in your own
+:term:`Metadata`. However, you should check your metadata
+against this list to be sure:
+
+-  ``libx11-trim``: Replaced by ``libx11``, which has a negligible
+   size difference with modern Xorg.
+
+-  ``xserver-xorg-lite``: Use ``xserver-xorg``, which has a negligible
+   size difference when DRI and GLX modules are not installed.
+
+-  ``xserver-kdrive``: Effectively unmaintained for many years.
+
+-  ``mesa-xlib``: No longer serves any purpose.
+
+-  ``galago``: Replaced by telepathy.
+
+-  ``gail``: Functionality was integrated into GTK+ 2.13.
+
+-  ``eggdbus``: No longer needed.
+
+-  ``gcc-*-intermediate``: The build has been restructured to avoid
+   the need for this step.
+
+-  ``libgsmd``: Unmaintained for many years. Functionality now
+   provided by ``ofono`` instead.
+
+-  *contacts, dates, tasks, eds-tools*: Largely unmaintained PIM
+   application suite. It has been moved to ``meta-gnome`` in
+   ``meta-openembedded``.
+
+In addition to the previously listed changes, the ``meta-demoapps``
+directory has also been removed because the recipes in it were not being
+maintained and many had become obsolete or broken. Additionally, these
+recipes were not parsed in the default configuration. Many of these
+recipes are already provided in an updated and maintained form within
+the OpenEmbedded community layers such as ``meta-oe`` and
+``meta-gnome``. For the remainder, you can now find them in the
+``meta-extras`` repository, which is in the
+:yocto_git:`Source Repositories <>` at
+:yocto_git:`/meta-extras/`.
+
+.. _1.3-linux-kernel-naming:
+
+Linux Kernel Naming
+-------------------
+
+The naming scheme for kernel output binaries has been changed to now
+include :term:`PE` as part of the filename::
+
+   KERNEL_IMAGE_BASE_NAME ?= "${KERNEL_IMAGETYPE}-${PE}-${PV}-${PR}-${MACHINE}-${DATETIME}"
+
+Because the :term:`PE` variable is not set by default, these binary files
+could result with names that include two dash characters. Here is an
+example::
+
+   bzImage--3.10.9+git0+cd502a8814_7144bcc4b8-r0-qemux86-64-20130830085431.bin
+
+