a simple beginning

.config.yaml

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+header:
+  version: 14
+
+# The machine as it is written into the `local.conf` of bitbake.
+machine: raspberrypi4-64
+
+# The distro name as it is written into the `local.conf` of bitbake.
+distro: poky
+
+# The main target
+target: rpilinux-image
+
+repos:
+  meta-raspberrypi:
+    url: http://git.yoctoproject.org/git/meta-raspberrypi
+    path: extern/
+    tag: scarthgap
+  poky:
+    url: http://git.yoctoproject.org/git/poky
+    tag: scarthgap
+    path: extern/
+    layers:
+      meta:
+      meta-poky:
+      meta-yocto-bsp:
+  meta-openembedded:
+    url: git://git.openembedded.org/meta-openembedded
+    tag: scarthgap
+    path: extern/
+    layers:
+      meta-oe:
+      meta-multimedia:
+      meta-networking:
+      meta-python:
+  local:
+    path: meta-rpilinux
+
+local_conf_header:
+  ipk: |
+    PACKAGE_CLASSES ?= "package_ipk"
+    PATCHRESOLVE = "noop"

.gitignore

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+build
+extern
+
+

README.md

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+# Yocto build
+
+Simply install kas using `pip install kas`, and run 
+
+```sh
+kas build
+```

meta-rpilinux/conf/layer.conf

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+# We have a conf and classes directory, add to BBPATH 
+BBPATH .= ":${LAYERDIR}" 
+
+# We have recipes-* directories, add to BBFILES 
+BBFILES += "${LAYERDIR}/recipes-*/*/*.bb \ 
+  ${LAYERDIR}/recipes-*/*/*.bbappend" 
+
+BBFILE_COLLECTIONS += "rpilinux" 
+BBFILE_PATTERN_rpilinux = "^${LAYERDIR}/" 
+BBFILE_PRIORITY_rpilinux = "6" 
+
+LAYERSERIES_COMPAT_rpilinux="scarthgap" 

meta-rpilinux/recipes-rpilinux/images/rpilinux-image.bb

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+require recipes-core/images/core-image-minimal.bb 
+
+IMAGE_INSTALL += "libstdc++ mtd-utils opkg" 
+IMAGE_INSTALL += "openssh openssl openssh-sftp-server"