Hi!
This system is about templates and automation. Just create needed templates like this and re-emerge calculate-sources:

/var/calculate/templates/6_ac_install_patch/sys-kernel/calculate-sources/3.14/libvirt:

# Calculate name=.config format=openrc
CONFIG_DM_MULTIPATH=m
CONFIG_MACVLAN=m
CONFIG_MACVTAP=m
CONFIG_BRIDGE_NF_EBTABLES=m
CONFIG_BRIDGE_EBT_MARK_T=m
CONFIG_BRIDGE_EBT_T_NAT=m
CONFIG_BLK_DEV_NBD=m

# Calculate append=skip merge(sys-kernel/calculate-sources)>=3.14

# Calculate append=skip merge()!=

# Calculate append=skip

# Calculate append=skip env=install cl_ver>=3.1.4&&ac_install_patch==on

# Calculate append=skip cl_name==calculate-core&&cl_ver>=3.1.1

thanks I try it

Sorry, I try It, but don't work
I put the files here /var/calculate/templates/6_ac_install_patch:

/var/calculate/templates/6_ac_install_patch
└── sys-kernel
└── calculate-sources
└── 3.18
└── libvirt

I modify the file /var/lib/layman/calculate/profiles/templates/3.3/6_ac_install_patch/sys-kernel/calculate-sources/3.18/0_config-x86_64

And I rebuild the kernel with or without the USE param build:
$ USE="build" emerge -vaq sys-kernel/calculate-sources
$ emerge -vaq sys-kernel/calculate-sources

Some idea or is possible to add this options to default calculate kernel, now Docker is a very important tool.

Thanks

I also followed instructions above for kernel 3.18 but got same error with updated kernel. And I think options for virtualization used by docker will be useful in the default kernel config for calculate.

Some news guys?