Syu error, dependencies

Question

pacman -Syu
:: Synchronizing package databases...
core is up to date
extra is up to date
community is up to date
:: Starting full system upgrade...
:: Replace portmap with core/rpcbind? [Y/n] y
resolving dependencies...
error: cannot resolve "libtasn1>=2.2", a dependency of "gnutls"
error: failed to prepare transaction (could not satisfy dependencies)
:: gnutls: requires libtasn1>=2.2
also ,
pacman -S evolution-data-server
resolving dependencies...
error: cannot resolve "libsoup>=2.26.2", a dependency of "evolution-data-server"
error: failed to prepare transaction (could not satisfy dependencies)
:: evolution-data-server: requires libsoup>=2.26.2

Answer 1

Does pacman have "libtasn1" and "libsoup" in its db mirrored from repo? Check output of:
pacman -Ss libtasn1
pacman -Ss libsoup
If not or if versions seem older than required then try to change repo address ("/etc/pacman.d/mirrorlist"). Maybe your current one have outdated "extra" ("extra is up to date" says only that your local "cache" of "extra" repo is in sync with your selected mirror).
This should help.