====== CI ======

Problems to solve:

===== layers revision =====

Change version of meta layers
  * repo: create another manifest with branch names, not hashes
  * kas: 
    * use 2 sets of config (1st: pinned.yml 2nd: integration.yml)
    * use lockfiles

===== single recipe revision =====

Change fixed ''SRCREV'' and ''SRCBRANCH'' in recipes ? quite problematic. For example recipe name is ''my_app.bb'':
  * ''my_app.bbappend'' in new meta layer used only during CI ?
  * ''my_app-latest.bb'' in the same meta layer and use PREFERRED_VERSION_my_app = "latest" ?
  * PREFERRED_VERSION_my_app = "latest" ?
    * create new meta layer for CI and 

  * Possible to pass env variables to bitbake: [[https://wiki.niziak.spox.org/sw:yocto:bitbake:tips#pass_env_variables_to_bitbake]]

**Already solved in Yocto!**

Yocto contains special latest distro [[https://github.com/bradfa/meta-yocto/blob/master/meta-yocto/conf/distro/poky-bleeding.conf|poky-bleeding.conf]]
where config file [[https://github.com/bradfa/meta-yocto/blob/master/meta-yocto/conf/distro/include/poky-floating-revisions.inc|poky-floating-revisions.inc]]
is used:

<file bash poky-floating-revisions.inc>
SRCREV_pn-oh-puzzles ?= "${AUTOREV}"
SRCREV_pn-libowl ?= "${AUTOREV}"
SRCREV_pn-matchbox-applet-light ?= "${AUTOREV}"
</file>

In latest Yocto it looks like:

<file bash poky-floating-revisions.inc>
#
# Set recipe versions to auto-rev for cutting edge testing
#

INHERIT += "poky-bleeding"

POKY_AUTOREV_RECIPES = "\
    libmatchbox \
    opkg-utils \
    matchbox-config-gtk \
    matchbox-desktop \
    matchbox-keyboard \
    matchbox-panel-2 \
    matchbox-terminal \
    matchbox-theme-sato \
    matchbox-wm \
    pseudo \
    puzzles \
    sato-icon-theme \
    sato-screenshot \
    settings-daemon \
"
</file>

  * See: [[https://docs.yoctoproject.org/dev-manual/external-scm.html#using-an-external-scm|Using an External SCM]]
  * See: [[https://docs.yoctoproject.org/dev-manual/build-quality.html#build-history-package-information|Build History Package Information]]