ref-manual: move migration guides to separate document

This makes the reference manual much lighter by moving
the migration guides to a separate document.

The migration guides are also reordered from last to first,
and they appear directly in the left bar, making them easier
to find in the documentation.

(From yocto-docs rev: 5121b86ee97eb62a0c69c9ad1fc0e3fabbe3e934)

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

23 files changed, 71 insertions, 67 deletions

diff --git a/documentation/index.rst b/documentation/index.rst
index ee9fe055ad..0fca6ce720 100644
--- a/documentation/index.rst
+++ b/documentation/index.rst
@@ -41,6 +41,7 @@ Welcome to the Yocto Project Documentation
    :caption: Releases manual
    :hidden:
 
+   Release Migration Guides <migration-guides/index>
    releases
 
 .. toctree::
diff --git a/documentation/ref-manual/migration.rst b/documentation/migration-guides/index.rst
index a01d4ee143..6304e6318c 100644
--- a/documentation/ref-manual/migration.rst
+++ b/documentation/migration-guides/index.rst
@@ -1,32 +1,34 @@
 .. SPDX-License-Identifier: CC-BY-SA-2.0-UK
 
-******************************************
-Migrating to a Newer Yocto Project Release
-******************************************
+==========================
+ Release Migration Guides
+==========================
 
-This chapter provides information you can use to migrate work to a newer
-Yocto Project release. You can find the same information in the release
-notes for a given release.
+|
+
+Each document in this chapter provides information about how
+to move to one release of the Yocto Project from the previous one.
 
 .. toctree::
 
    migration-general
-   migration-1.3
-   migration-1.4
-   migration-1.5
-   migration-1.6
-   migration-1.7
-   migration-1.8
-   migration-2.0
-   migration-2.1
-   migration-2.2
-   migration-2.3
-   migration-2.4
-   migration-2.5
-   migration-2.6
-   migration-2.7
-   migration-3.0
-   migration-3.1
-   migration-3.2
    migration-3.3
+   migration-3.2
+   migration-3.1
+   migration-3.0
+   migration-2.7
+   migration-2.6
+   migration-2.5
+   migration-2.4
+   migration-2.3
+   migration-2.2
+   migration-2.1
+   migration-2.0
+   migration-1.8
+   migration-1.7
+   migration-1.6
+   migration-1.5
+   migration-1.4
+   migration-1.3
 
+.. include:: /boilerplate.rst
diff --git a/documentation/ref-manual/migration-1.3.rst b/documentation/migration-guides/migration-1.3.rst
index b90767ff90..db5333ccd7 100644
--- a/documentation/ref-manual/migration-1.3.rst
+++ b/documentation/migration-guides/migration-1.3.rst
@@ -1,7 +1,7 @@
 .. SPDX-License-Identifier: CC-BY-SA-2.0-UK
 
-Moving to the Yocto Project 1.3 Release (danny)
-===============================================
+Release 1.3 (danny)
+===================
 
 This section provides migration information for moving to the Yocto
 Project 1.3 Release (codename "danny") from the prior release.
diff --git a/documentation/ref-manual/migration-1.4.rst b/documentation/migration-guides/migration-1.4.rst
index deb848749c..07dd93b761 100644
--- a/documentation/ref-manual/migration-1.4.rst
+++ b/documentation/migration-guides/migration-1.4.rst
@@ -1,5 +1,5 @@
-Moving to the Yocto Project 1.4 Release (dylan)
-===============================================
+Release 1.4 (dylan)
+===================
 
 This section provides migration information for moving to the Yocto
 Project 1.4 Release (codename "dylan") from the prior release.
@@ -60,7 +60,7 @@ Differences include the following:
    the :term:`MACHINEOVERRIDES` or
    :term:`DISTROOVERRIDES` variables, as
    appropriate. For more related changes, see the
-   ":ref:`ref-manual/migration-1.4:variables`" section.
+   ":ref:`migration-guides/migration-1.4:variables`" section.
 
 .. _migration-1.4-proxies-and-fetching-source:
 
diff --git a/documentation/ref-manual/migration-1.5.rst b/documentation/migration-guides/migration-1.5.rst
index c772e51b54..f6bd118c9d 100644
--- a/documentation/ref-manual/migration-1.5.rst
+++ b/documentation/migration-guides/migration-1.5.rst
@@ -1,5 +1,5 @@
-Moving to the Yocto Project 1.5 Release (dora)
-==============================================
+Release 1.5 (dora)
+==================
 
 This section provides migration information for moving to the Yocto
 Project 1.5 Release (codename "dora") from the prior release.
diff --git a/documentation/ref-manual/migration-1.6.rst b/documentation/migration-guides/migration-1.6.rst
index 5a18d63103..1408e12c23 100644
--- a/documentation/ref-manual/migration-1.6.rst
+++ b/documentation/migration-guides/migration-1.6.rst
@@ -1,5 +1,5 @@
-Moving to the Yocto Project 1.6 Release (daisy)
-===============================================
+Release 1.6 (daisy)
+===================
 
 This section provides migration information for moving to the Yocto
 Project 1.6 Release (codename "daisy") from the prior release.
diff --git a/documentation/ref-manual/migration-1.7.rst b/documentation/migration-guides/migration-1.7.rst
index 46bf126583..999f11a12b 100644
--- a/documentation/ref-manual/migration-1.7.rst
+++ b/documentation/migration-guides/migration-1.7.rst
@@ -1,5 +1,5 @@
-Moving to the Yocto Project 1.7 Release (dizzy)
-===============================================
+Release 1.7 (dizzy)
+===================
 
 This section provides migration information for moving to the Yocto
 Project 1.7 Release (codename "dizzy") from the prior release.
diff --git a/documentation/ref-manual/migration-1.8.rst b/documentation/migration-guides/migration-1.8.rst
index 68d5dcf859..971bd33f40 100644
--- a/documentation/ref-manual/migration-1.8.rst
+++ b/documentation/migration-guides/migration-1.8.rst
@@ -1,5 +1,5 @@
-Moving to the Yocto Project 1.8 Release (fido)
-==============================================
+Release 1.8 (fido)
+==================
 
 This section provides migration information for moving to the Yocto
 Project 1.8 Release (codename "fido") from the prior release.
diff --git a/documentation/ref-manual/migration-2.0.rst b/documentation/migration-guides/migration-2.0.rst
index 8319b0ee36..22d0752226 100644
--- a/documentation/ref-manual/migration-2.0.rst
+++ b/documentation/migration-guides/migration-2.0.rst
@@ -1,5 +1,5 @@
-Moving to the Yocto Project 2.0 Release (jethro)
-================================================
+Release 2.0 (jethro)
+====================
 
 This section provides migration information for moving to the Yocto
 Project 2.0 Release (codename "jethro") from the prior release.
diff --git a/documentation/ref-manual/migration-2.1.rst b/documentation/migration-guides/migration-2.1.rst
index 32d193f0ff..d4db8218cf 100644
--- a/documentation/ref-manual/migration-2.1.rst
+++ b/documentation/migration-guides/migration-2.1.rst
@@ -1,5 +1,5 @@
-Moving to the Yocto Project 2.1 Release (krogoth)
-=================================================
+Release 2.1 (krogoth)
+=====================
 
 This section provides migration information for moving to the Yocto
 Project 2.1 Release (codename "krogoth") from the prior release.
@@ -179,7 +179,7 @@ The following recipes have been removed in the 2.1 release:
 -  ``python-pygtk``: Recipe became obsolete.
 
 -  ``adt-installer``: Recipe became obsolete. See the
-   ":ref:`ref-manual/migration-2.1:adt removed`" section for more information.
+   ":ref:`migration-guides/migration-2.1:adt removed`" section for more information.
 
 .. _migration-2.1-class-changes:
 
diff --git a/documentation/ref-manual/migration-2.2.rst b/documentation/migration-guides/migration-2.2.rst
index a60ce8d52b..76311107ec 100644
--- a/documentation/ref-manual/migration-2.2.rst
+++ b/documentation/migration-guides/migration-2.2.rst
@@ -1,5 +1,5 @@
-Moving to the Yocto Project 2.2 Release (morty)
-===============================================
+Release 2.2 (morty)
+===================
 
 This section provides migration information for moving to the Yocto
 Project 2.2 Release (codename "morty") from the prior release.
@@ -364,7 +364,7 @@ The following recipes have been removed:
 -  ``sato-icon-theme``: Became obsolete.
 
 -  ``swabber-native``: Swabber has been removed. See the :ref:`entry on
-   Swabber <ref-manual/migration-2.2:swabber has been removed>`.
+   Swabber <migration-guides/migration-2.2:swabber has been removed>`.
 
 -  ``tslib``: No longer needed and has been moved to ``meta-oe``.
 
@@ -390,7 +390,7 @@ The following classes have been removed:
 -  ``sip``: Mostly unused.
 
 -  ``swabber``: See the :ref:`entry on
-   Swabber <ref-manual/migration-2.2:swabber has been removed>`.
+   Swabber <migration-guides/migration-2.2:swabber has been removed>`.
 
 .. _migration-2.2-minor-packaging-changes:
 
diff --git a/documentation/ref-manual/migration-2.3.rst b/documentation/migration-guides/migration-2.3.rst
index dfbda612ae..6cdc209e35 100644
--- a/documentation/ref-manual/migration-2.3.rst
+++ b/documentation/migration-guides/migration-2.3.rst
@@ -1,5 +1,5 @@
-Moving to the Yocto Project 2.3 Release (pyro)
-==============================================
+Release 2.3 (pyro)
+==================
 
 This section provides migration information for moving to the Yocto
 Project 2.3 Release (codename "pyro") from the prior release.
diff --git a/documentation/ref-manual/migration-2.4.rst b/documentation/migration-guides/migration-2.4.rst
index 2ba17e0ed5..44f31dc8a9 100644
--- a/documentation/ref-manual/migration-2.4.rst
+++ b/documentation/migration-guides/migration-2.4.rst
@@ -1,5 +1,5 @@
-Moving to the Yocto Project 2.4 Release (rocko)
-===============================================
+Release 2.4 (rocko)
+===================
 
 This section provides migration information for moving to the Yocto
 Project 2.4 Release (codename "rocko") from the prior release.
diff --git a/documentation/ref-manual/migration-2.5.rst b/documentation/migration-guides/migration-2.5.rst
index 86a0da9c40..c7e0760463 100644
--- a/documentation/ref-manual/migration-2.5.rst
+++ b/documentation/migration-guides/migration-2.5.rst
@@ -1,5 +1,5 @@
-Moving to the Yocto Project 2.5 Release (sumo)
-==============================================
+Release 2.5 (sumo)
+==================
 
 This section provides migration information for moving to the Yocto
 Project 2.5 Release (codename "sumo") from the prior release.
diff --git a/documentation/ref-manual/migration-2.6.rst b/documentation/migration-guides/migration-2.6.rst
index d1c6c0c5f5..e27fad82c6 100644
--- a/documentation/ref-manual/migration-2.6.rst
+++ b/documentation/migration-guides/migration-2.6.rst
@@ -1,5 +1,5 @@
-Moving to the Yocto Project 2.6 Release (thud)
-==============================================
+Release 2.6 (thud)
+==================
 
 This section provides migration information for moving to the Yocto
 Project 2.6 Release (codename "thud") from the prior release.
@@ -110,7 +110,7 @@ upon the older ``*proto`` recipes need to be changed to depend on the
 newer ``xorgproto`` recipe instead.
 
 For names of recipes removed because of this repository change, see the
-:ref:`ref-manual/migration-2.6:removed recipes` section.
+:ref:`migration-guides/migration-2.6:removed recipes` section.
 
 .. _migration-2.6-distutils-distutils3-fetching-dependencies:
 
diff --git a/documentation/ref-manual/migration-2.7.rst b/documentation/migration-guides/migration-2.7.rst
index 1be4d5d5b9..66cb84584f 100644
--- a/documentation/ref-manual/migration-2.7.rst
+++ b/documentation/migration-guides/migration-2.7.rst
@@ -1,5 +1,5 @@
-Moving to the Yocto Project 2.7 Release (warrior)
-=================================================
+Release 2.7 (warrior)
+=====================
 
 This section provides migration information for moving to the Yocto
 Project 2.7 Release (codename "warrior") from the prior release.
diff --git a/documentation/ref-manual/migration-3.0.rst b/documentation/migration-guides/migration-3.0.rst
index a3da850150..163c6201c5 100644
--- a/documentation/ref-manual/migration-3.0.rst
+++ b/documentation/migration-guides/migration-3.0.rst
@@ -1,5 +1,5 @@
-Moving to the Yocto Project 3.0 Release (zeus)
-==============================================
+Release 3.0 (zeus)
+==================
 
 This section provides migration information for moving to the Yocto
 Project 3.0 Release (codename "zeus") from the prior release.
diff --git a/documentation/ref-manual/migration-3.1.rst b/documentation/migration-guides/migration-3.1.rst
index 7822285a87..d6a30dc274 100644
--- a/documentation/ref-manual/migration-3.1.rst
+++ b/documentation/migration-guides/migration-3.1.rst
@@ -1,5 +1,5 @@
-Moving to the Yocto Project 3.1 Release (dunfell)
-=================================================
+Release 3.1 (dunfell)
+=====================
 
 This section provides migration information for moving to the Yocto
 Project 3.1 Release (codename "dunfell") from the prior release.
diff --git a/documentation/ref-manual/migration-3.2.rst b/documentation/migration-guides/migration-3.2.rst
index 956a56f626..dd316a70ff 100644
--- a/documentation/ref-manual/migration-3.2.rst
+++ b/documentation/migration-guides/migration-3.2.rst
@@ -1,5 +1,5 @@
-Moving to the Yocto Project 3.2 Release (gatesgarth)
-====================================================
+Release 3.2 (gatesgarth)
+========================
 
 This section provides migration information for moving to the Yocto
 Project 3.2 Release (codename "gatesgarth") from the prior release.
diff --git a/documentation/ref-manual/migration-3.3.rst b/documentation/migration-guides/migration-3.3.rst
index 4fb51a39dc..28857e820b 100644
--- a/documentation/ref-manual/migration-3.3.rst
+++ b/documentation/migration-guides/migration-3.3.rst
@@ -1,5 +1,5 @@
-Moving to the Yocto Project 3.3 Release (hardknott)
-===================================================
+Release 3.3 (hardknott)
+=======================
 
 This section provides migration information for moving to the Yocto
 Project 3.3 Release (codename "hardknott") from the prior release.
diff --git a/documentation/ref-manual/migration-general.rst b/documentation/migration-guides/migration-general.rst
index 182482ec43..182482ec43 100644
--- a/documentation/ref-manual/migration-general.rst
+++ b/documentation/migration-guides/migration-general.rst
diff --git a/documentation/ref-manual/index.rst b/documentation/ref-manual/index.rst
index deb0383cfc..5cf10c5c2f 100644
--- a/documentation/ref-manual/index.rst
+++ b/documentation/ref-manual/index.rst
@@ -13,7 +13,6 @@ Yocto Project Reference Manual
    system-requirements
    terms
    release-process
-   migration
    structure
    classes
    tasks
diff --git a/documentation/ref-manual/release-process.rst b/documentation/ref-manual/release-process.rst
index 935a2e39bb..64adc1e389 100644
--- a/documentation/ref-manual/release-process.rst
+++ b/documentation/ref-manual/release-process.rst
@@ -62,8 +62,10 @@ codename are likely to be compatible and thus work together.
 
 Releases are given a nominal release version as well but the codename is
 used in repositories for this reason. You can find information on Yocto
-Project releases and codenames at
-:yocto_wiki:`/Releases`.
+Project releases and codenames at :yocto_wiki:`/Releases`.
+
+Our :doc:`/migration-guides/index` detail how to migrate from one release of
+the Yocto Project to the next.
 
 Stable Release Process
 ======================