'bitbake-layers add-layer' doesn't validate the layer configuration before writing it: $ bitbake-layers show-layers NOTE: Starting bitbake server... layer path priority ========================================================================== meta /home/ross/Yocto/poky/meta 5 meta-poky /home/ross/Yocto/poky/meta-poky 5 meta-yocto-bsp /home/ross/Yocto/poky/meta-yocto-bsp 5 $ bitbake-layers add-layer ~/Yocto/meta-arm/meta-arm NOTE: Starting bitbake server... $ bitbake-layers show-layers NOTE: Starting bitbake server... Traceback (most recent call last): File "/home/ross/Yocto/poky/bitbake/bin/bitbake-layers", line 95, in <module> ret = main() File "/home/ross/Yocto/poky/bitbake/bin/bitbake-layers", line 63, in main tinfoil.prepare(True) File "/home/ross/Yocto/poky/bitbake/lib/bb/tinfoil.py", line 410, in prepare self.run_command('parseConfiguration') File "/home/ross/Yocto/poky/bitbake/lib/bb/tinfoil.py", line 466, in run_command raise TinfoilCommandFailed(result[1]) bb.tinfoil.TinfoilCommandFailed: Traceback (most recent call last): File "/home/ross/Yocto/poky/bitbake/lib/bb/command.py", line 81, in runCommand result = command_method(self, commandline) File "/home/ross/Yocto/poky/bitbake/lib/bb/command.py", line 281, in parseConfiguration command.cooker.parseConfiguration() File "/home/ross/Yocto/poky/bitbake/lib/bb/cooker.py", line 426, in parseConfiguration self.handleCollections(self.data.getVar("BBFILE_COLLECTIONS")) File "/home/ross/Yocto/poky/bitbake/lib/bb/cooker.py", line 1255, in handleCollections raise CollectionError("Errors during parsing layer configuration") bb.cooker.CollectionError: Errors during parsing layer configuration The actual error (not visible, see bug 13183) is that meta-arm depends on meta-arm-toolchain. This should have prevented adding meta-arm to the layers.
The issue is that it probably can't validate it without writing it, then the exception causes the rollback to fail?
I see something a little different: richard@jet$ bitbake-layers add-layer ../meta-arm/meta-arm NOTE: Starting bitbake server... richard@jet$ bitbake show-layers ERROR: Layer 'meta-arm' depends on layer 'arm-toolchain', but this layer is not enabled in your configuration which release was this with?
Obviously that should be "bitbake-layers show-layers" but it was confusing as the wrong command was showing me the error I wanted!
Fixed with: http://git.yoctoproject.org/cgit.cgi/poky/commit/?id=7283a0b3b6ca49d0d2e13593333a580ef10439a8 http://git.yoctoproject.org/cgit.cgi/poky/commit/?id=df90345d33730003300159e0c3e55c0efc61c7c2 so now the layer is not added if dependencies are not met.