Can't build the devel branch due to virtualbox-guest-dkms incompatibility with Linux 4.9
_Originally created by @intrigeri on [#12298 (Redmine)](https://public-redmine-archive.tails.boum.org/code/issues/12298)_ I’ll see if pulling vbox-dkms from sid is enough. if not, I’ll disable the vbox dkms hook for now. and then we have a full cycle to decide what we do for 2.12 (<https://tails.boum.org/contribute/meetings/201703/#index4h2> might help), between a) prepare a custom backport; and b) give up. ### Related issues - **Related to** tails/tails#12307 - **Blocks** tails/tails#12089 - **Blocks** tails/tails#12218
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