As reported by quiliro on #guix, currently "loadkeys dvorak-es" errors giving:
cannot open include file euro
Updating 'kbd' package to the latest version fixes this problem.
I suppose it's ok to commit it to master, right?
For the records, the fix was simple:
https://git.kernel.org/cgit/linux/kernel/git/legion/kbd.git/commit/data/keymaps?id=6fa56d7594aca7e936523282871e87463560aff4
[PATCH 1/2] gnu: kbd: Use 'modify-phases'.
[PATCH 2/2] gnu: kbd: Update to 2.0.3.
