Now we see some transition problems, https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=784009, and it's going to also hit other distributions than debian.
Would it make sense to issue a nettle-2.7.2, which is nettle-2.7.1 + symbol versions? There's at least one bugfix which could be backported if we do another 2.7.x:
2014-06-30 Niels Möller nisse@lysator.liu.se
* camellia-absorb.c: Include <limits.h>, needed for correct use of HAVE_NATIVE_64_BIT. Reported and debugged by Magnus Holmgren.
Regards, /Niels