Rust Cargo not functional (certificate issues)

[patham9]

I know from experience Rust Cargo is a bit of a bloated piece of software which easily dumps half a Gig on your disc for installing a small package.
So I understand that Rust is not a priority for systems programmers who usually prefer a small self-hosted environment, or people who prefer a small OS like this wonderful community here!

Nevertheless, to my surprise I noticed both TinyCore and CorePure64 provide a Rust package. Unfortunately both of them fails to install local issuer certificate when Cargo gets involved,
I am not quite sure if this is an issue with the rust tcz file itself, or with openssl.
Is there anyone here who successfully uses Rust Cargo on TinyCore or CorePure64?
If so, what had to be done to get around the download certificate issues?
Of course I am also interested in case someone managed to hamper Cargo from bloating your system!

Best regards,
Patrick

[Juanito]

Do you need SSL_CERT_FILE=/usr/local/etc/ssl/certs/ca-certificates.crt or similar?