[closed] equery d rust-bin

[jankom]

Can anybody please explain why and what the question mark means in the following (partial output);

[Banana]

If the useflag rust is set for package https://packages.gentoo.org/packages/sys-devel/gcc then it needs rust to build/install
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PFL - Portage file list - find which package a file or command belongs to.
My delta-labs.org snippets do expire

[jankom]

@Banana - yes, I understand.
I'l close this post as [Solved]. My confusion was because I noticed that rust-bin was only listed in the /var/lib/portage/world file of my virtual server and not in the fitlet machine. Both do however have rust-bin package installed, and gcc does have

[Hu]

Unless you personally write Rust code, you probably should not have dev-lang/rust-bin in @world. Putting it in @world says you want it installed. If you aren't writing Rust, you don't care whether a Rust compiler is installed, and should let Portage install or uninstall the Rust compiler as Portage sees fit.

[jankom]

@Hu
OK, I understand. What I don't understand is that in my virtual server (Akamai linode):

[Hu]

Based on what you showed, you probably ran emerge dev-lang/rust-bin without --oneshot at some point on the linode, so now Portage believes you want Rust installed, and is reflecting that belief with an entry in @world. Run emerge --deselect dev-lang/rust-bin to reverse this without needing to remove Rust. Alternatively, if Rust is unused, emerge --ask --verbose --depclean dev-lang/rust-bin will both remove it from @world and remove it from the system.

[jankom]

Thank you, Hu. Now I understand a little better what --oneshot means.