Okay, it seems like a versioning issue. The latest zig package in Arch is 0.16. vszip only builds with zig 0.15. I'll update the build to specifically use zig 0.15.

It's failing for me as well. I wonder if the build changed, or if it's an upstream issue. Been busy today, so I'll try to get it fixed as soon as possible.

anyone else having issues building 13.0.0-1? I've tried with paru (with chroot flag), yay and makepkg

build.zig:37:8: error: no field or member function named 'linkLibC' in 'Build.Step.Compile'
    lib.linkLibC();
    ~~~^~~~~~~~~
/usr/lib/zig/std/Build/Step/Compile.zig:1:1: note: struct declared here
const Compile = @This();
^~~~~
build.zig:37:8: note: method invocation only supports up to one level of implicit pointer dereferencing
build.zig:37:8: note: use '.*' to dereference pointer
referenced by:
    runBuild__anon_34186: /usr/lib/zig/std/Build.zig:2265:44
    main: /usr/lib/zig/compiler/build_runner.zig:463:29
    5 reference(s) hidden; use '-freference-trace=7' to see all references
==> ERROR: A failure occurred in build().
    Aborting...
==> ERROR: Build failed, check /var/lib/aurbuild/x86_64/user/build
error: failed to build 'vapoursynth-plugin-vszip-13.0.0-1': failed to run: makechrootpkg -r /var/lib/aurbuild/x86_64 -d /var/cache/pacman/pkg/ -- -feA --noconfirm --noprepare --holdver:
error: packages failed to build: vapoursynth-plugin-vszip-13.0.0-1

Why does this depend on zig-bin and not on zig?