Mmap failing to compile on windows? | Zig Programming Language | Page 1

    const data: []align(mem.page_size) u8 = try std.os.mmap(null, file_size, std.os.PROT.READ, std.os.MAP.PRIVATE, mapped_checkpoint.handle, 0);

from https://github.com/cgbur/llama2.zig/blob/0000b155e4192dc48dd7d54b9971acfe566711e4/src/main.zig#L848

Immediatly fails when compiling with:

zig build-exe src/main.zig -target x86_64-windows

0.12.0-dev.66+5e0107fbc/files/lib/std/os.zig:99:23: error: root struct of file 'c' has no member named 'MAP'
pub const MAP = system.MAP;
                ~~~~~~^~~~
referenced by:
    main: src/main.zig:848:102

Any ideas here? I thought that the os module was platform independent. Do I need to just read the file in on windows instead of mmap?

#Mmap failing to compile on windows?