Re: library versions in pkgsrc binaries

[maya%netbsd.org@localhost]

Background:
https://gcc.gnu.org/onlinedocs/libstdc++/manual/using_dual_abi.html

libstdc++'s implementation of some things was incompatible with C++11.
They tried to make some workarounds to give the illusion that backwards
compatibility is not broken, but it's very hard to handle problems
resulting from this.

For this reason netbsd and many linux distros chose to instead break
backwards compatibility. NetBSD incremented the major number 7->8 and
increased the major number of any library that uses C++ in base.

I recommend getting 8.0 sets for using 8.0 packages :)
You can unpack them on top of your existing install.