When you need a zig library to download files.
This is how I got openssl to work on windows.
- Download binaries from https://slproweb.com/products/Win32OpenSSL.html
I downloaded this 64-bit exe installer https://slproweb.com/download/Win64OpenSSL-1_1_1g.exe
- Run the installer
- Pick an install location
- I selected "Copy OpenSSL Dlls to:" > "The OpenSSL binaries (/bin) directory" but it shouldn't matter