[packages/rust] - add future hint for x32 build requirements

[Elan Ruusamäe]

On 12/2/20 7:14 PM, baggins wrote:

> +# how to specify? - rpm.org adds arch provides on packages (__isa), uncomment once we switch
> +#BuildRequires:	curl-devel(x86-64)
> +#BuildRequires:	libgit2-devel(x86-64)
> +#BuildRequires:	llvm-devel(x86-64)>= 7.0
> +#BuildRequires:	openssl-devel(x86-64)
> +#BuildRequires:	zlib-devel(x86-64)

if you want to solve this now,

you can add BR: %{_libdir}/libcurl.so to require curl-devel for current 
arch. or /usr/lib64 to require specific one regardless of build arch.