Since the KDE 4 desktop has been unmaintained for several months and it's
becoming increasingly difficult to support two versions of Plasma, we are
removing it from our repositories. Plasma 5.5 has just been released and should
be stable enough to replace it.
KDE 4 installations will not be automatically upgraded to Plasma 5. However, we
recommend all users to upgrade or switch to a maintained alternative as soon as
possible, since any future update may break the KDE 4 desktop without prior
notice. See [the wiki][1] for instructions on how to upgrade to Plasma 5.
[1]: https://wiki.archlinux.org/index.php/KDE#Upgrading_from_Plasma_4_to_5
URL: https://www.archlinux.org/news/dropping-plasma-4/
GCC 5.x contains libstdc++ with [dual ABI][1] support and we have now switched
to the new ABI.
While the old C++ ABI is still available, it is recommended that you build all
non-repo packages to have the new ABI. This is particularly important if they
link to another library built against the new ABI. You can get a list of
packages to rebuild using the following shell script:
#!/bin/bash
while read pkg; do
mapfile -t files < <(pacman -Qlq $pkg | grep -v /$)
grep -Fq libstdc++.so.6 "${files[@]}" 2>/dev/null && echo $pkg
done < <(pacman -Qmq)
(Original announcement text by Allan McRae [[link][2]])
[1]: https://gcc.gnu.org/onlinedocs/libstdc++/manual/using_dual_abi.html
[2]: https://lists.archlinux.org/pipermail/arch-dev-
public/2015-December/027597.html
URL: https://www.archlinux.org/news/c-abi-change/