$ zig version
0.13.0
$ cd /usr/pkgsrc/devel/zls
$ make
ERROR: This package has set PKG_FAIL_REASON:
ERROR: zls-0.12.0 is marked as broken:
ERROR: Does not support zig 0.13.0
*** Error code 1
Stop.
make: stopped in /usr/pkgsrc/devel/zls
It can be unbroken for 0.13.0.
Solution is here.