[poky] Error when removing dependency with oe_filter_out

[Andrei Gherzan]

I want to add a bbappend to remove db dependency of python:
DEPENDS := "${@oe_filter_out('db', '${DEPENDS}', d)}"

If i do it so, build ends up with this error:

ERROR: Nothing PROVIDES 'virtual/arm-poky-linux-gnueabi-gcc-crosssdk' (but
virtual:nativesdk:/media/HDD-WRS/Projects/Yocto/poky/meta/recipes-devtools/python/
python_2.7.3.bb DEPENDS on or otherwise requires it)
NOTE: Runtime target 'gdb-cross-canadian-arm' is unbuildable, removing...
Missing or unbuildable dependency chain was: ['gdb-cross-canadian-arm',
'nativesdk-python', 'virtual/arm-poky-linux-gnueabi-gcc-crosssdk']
NOTE: Runtime target 'packagegroup-cross-canadian-arm' is unbuildable,
removing...
Missing or unbuildable dependency chain was:
['packagegroup-cross-canadian-arm', 'gdb-cross-canadian-arm',
'nativesdk-python', 'virtual/arm-poky-linux-gnueabi-gcc-crosssdk']
ERROR: Required build target 'core-image-minimal' has no buildable
providers.
Missing or unbuildable dependency chain was: ['core-image-minimal',
'packagegroup-cross-canadian-arm', 'gdb-cross-canadian-arm',
'nativesdk-python', 'virtual/arm-poky-linux-gnueabi-gcc-crosssdk']

If i simply remove it from DEPENDS everything works.

Any help?

-- 
*Andrei Gherzan*
m: +40.744.478.414 |  f: +40.31.816.28.12
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