Alan Mackenzie <acm@muc.de> writes:

> Hello, Gentoo.
>
> For the past couple of days, after $ emerge --sync, I've tried
>
>     $ emerge -auND @world
>
> ..  It has come back very quickly with the error message:
>
> #########################################################################
>
> !!! The ebuild selected to satisfy ">=net-misc/curl-7.21.5[ssl]" has unmet requirements.
> - net-misc/curl-8.1.2::gentoo USE="adns ftp gnutls http2 imap pop3 progress-meter smtp ssl tftp -alt-svc -brotli -gopher -hsts -idn -kerberos -ldap -mbedtls (-nghttp3) -nss -openssl -rtmp (-rustls) -samba -ssh (-sslv3) -static-libs -telnet
> -test -verify-sig -websockets -zstd" ABI_X86="(64) -32 (-x32)" CURL_SSL="openssl -gnutls -mbedtls -nss (-rustls)"
>
>   The following REQUIRED_USE flag constraints are unsatisfied:
>     curl_ssl_openssl? ( openssl )

A REQUIRED_USE of 'X? ( Y Z )' means that if X is set, Y and Z must be
set.  In boolean algebra, it can be expressed as a X => ( Y AND Z ).

See https://wiki.gentoo.org/wiki/Required_USE_flags

Hope that helps, have a lovely day.

>   The above constraints are a subset of the following complete expression:
>     ssl? ( exactly-one-of ( curl_ssl_gnutls curl_ssl_mbedtls curl_ssl_nss curl_ssl_openssl curl_ssl_rustls ) ) curl_ssl_gnutls? ( gnutls ) curl_ssl_mbedtls? ( mbedtls ) curl_ssl_nss? ( nss ) curl_ssl_openssl? ( openssl ) curl_ssl_rustls? (
> rustls )
>
> #########################################################################
>
> ..  I don't understand what is meant by "curl_ssl_openssl? ( openssl )" in
> the above message.  I assume it's talking about some USE flag, but which?
> openssl?  curl_ssl_openssl?  As a matter of interest, I have
> =dev-libs/openssl-3.0.9-r2 installed.
>
> Please help me understand what's happening.
>
> Thanks for the help!


-- 
Arsen Arsenović