where are linux headers?

[bozonius]

I need linux headers to build guest additions for virtualbox.  I did a "cards search headers" and "cards search linux" but did not see the headers.  Maybe I overlooked these?  Or are they simply not packaged this way?

[bozonius]

Answering my own question, after sifting and poring over "cards" output:  The kernel headers are in package "kernel-lts.devel."

Hopefully, someone might be helped by this post.