If you use devtool update-recipe after devtool modify, for some recipes you get a warning about values being replaced e.g. with mdadm: WARNING: Variable key FILES_${PN} ( ${base_libdir}/udev/rules.d/*.rules) replaces original key FILES_mdadm I'm not exactly sure why this is happening; it doesn't appear to cause any issue but it shouldn't be showing up in any case.
Verified on master: 4bc3f0994e68b3302a0523a3156dd0dca0cac7a0 Steps to verify: [daniel@fedora-ws poky-build]$ devtool modify mdadm -x /tmp/mdadm NOTE: Creating workspace layer in /media/ssd/poky-build/workspace NOTE: Enabling workspace layer in bblayers.conf Parsing recipes..done. NOTE: Fetching mdadm... NOTE: Unpacking... NOTE: Patching... NOTE: Source tree extracted to /tmp/mdadm NOTE: Using source tree as build directory since recipe inherits autotools-brokensep NOTE: Recipe mdadm now set up to build from /tmp/mdadm Go to /tmp/mdmadm and modify a file (eg TODO) and commit -a daniel@fedora-ws poky-build]$ devtool update-recipe mdadm Parsing recipes..done. NOTE: Adding new patch 0001-Updated-to-do.patch NOTE: Updating recipe mdadm_3.3.4.bb [daniel@fedora-ws poky-build]$ No warnings shown. To put things back: [daniel@fedora-ws poky-build]$ devtool reset mdadm NOTE: Cleaning sysroot for recipe mdadm... [daniel@fedora-ws poky-build]$