Libs-API Meeting 2021-07-21

# Libs-API Meeting 2021-07-21 ###### tags: `Libs Meetings` `Minutes` **Meeting Link**: https://meet.jit.si/rust-libs-meeting-crxoz2at8hiccp7b3ixf89qgxfymlbwr **Attendees**: ... ## Agenda - [Open action items](https://hackmd.io/ovrbJj6CRduRgSA0Wzg2zg) - Triage - Anything else? - Should we add `try_pin` to `Box` and `Rc` from https://github.com/rust-lang/rust/pull/85579 - Decision: let's not add more of these until there's a specific request. Some discussion and debate about whether we want to stabilize this method on `Arc`. ## Triage ### FCPs Discussion: let's drop this section, and just let people nominate if they want to discuss. Idea: Also list FCP that have been open for more than X amount of time (things that have stalled out). 8 open T-libs-api FCPs: <details><summary><a href="https://github.com/rust-lang/rust/issues?q=is%3Aopen+label%3AT-libs-api+label%3Aproposed-final-comment-period">8 <code>rust-lang/rust</code> FCPs</a></summary> - [[merge 84640](https://github.com/rust-lang/rust/issues/84640#issuecomment-829631948)] *Implement \`TryFrom<char>\` for \`u8\`* - (0 checkboxes left) Blocked on an open concern. - [[merge 85766](https://github.com/rust-lang/rust/issues/85766#issuecomment-849994105)] *Stabilize File::options()* - (2 checkboxes left) - [[merge 85655](https://github.com/rust-lang/rust/issues/85655#issuecomment-851174984)] *Change \`Ipv6Addr::is\_loopback\` to include IPv4\-mapped loopback addresses* - (5 checkboxes left) - [[merge 86335](https://github.com/rust-lang/rust/issues/86335#issuecomment-865364311)] *Commit to not supporting IPv4\-in\-IPv6 addresses* - (3 checkboxes left) - [[merge 85835](https://github.com/rust-lang/rust/issues/85835#issuecomment-860237594)] *Implement Extend<(A, B)> for (Extend<A>, Extend<B>)* - (3 checkboxes left) - [[merge 44434](https://github.com/rust-lang/rust/issues/44434#issuecomment-865374685)] *Provide an API to extract fields from Command builder* - (4 checkboxes left) - [[merge 80690](https://github.com/rust-lang/rust/issues/80690#issuecomment-846481791)] *Tracking Issue for BufWriter::into\_raw\_parts* - (1 checkboxes left) - [[merge 86744](https://github.com/rust-lang/rust/issues/86744#issuecomment-874111275)] *impl Default, Copy, Clone for std::io::Sink and Empty* - (3 checkboxes left) </details> <p></p> [Amanieu (2)](https://rfcbot.rs/fcp/Amanieu), [BurntSushi (1)](https://rfcbot.rs/fcp/BurntSushi), [dtolnay (1)](https://rfcbot.rs/fcp/dtolnay), [joshtriplett (4)](https://rfcbot.rs/fcp/joshtriplett), [m-ou-se (5)](https://rfcbot.rs/fcp/m-ou-se), [sfackler (4)](https://rfcbot.rs/fcp/sfackler), [yaahc (4)](https://rfcbot.rs/fcp/yaahc) ### Nominated - [4 `rust-lang/rust` `T-libs-api` `I-nominated` items](https://github.com/rust-lang/rust/issues?q=is:open+label:T-libs-api+label:I-nominated) - [[74465](https://github.com/rust-lang/rust/issues/74465)] *Tracking Issue for \`once\_cell\`* - We're happy with the suggestion by Ashley to move the modules and rename to match `RefCell` vs `Mutex` - Bstrie: create a new API comment for an FCP based on Ashley's suggestion - prefer to stick with `get_or_init` over `get_with`, which implies a lack of mutation - [[79561](https://github.com/rust-lang/rust/issues/79561)] *Don't use RUST\_BACKTRACE for std::backtrace* - Current behavior is preferred over separating, close issue - [[81050](https://github.com/rust-lang/rust/pull/81050)] *Stabilize core::task::if\_ready!* - [[87173](https://github.com/rust-lang/rust/pull/87173)] *unstable proc\_macro tracked::\* rename/restructure* ### Waiting on team - [2 `rust-lang/rust` `T-libs-api` `S-waiting-on-team` items](https://github.com/rust-lang/rust/issues?q=is:open+label:T-libs-api+label:S-waiting-on-team) - [[66358](https://github.com/rust-lang/rust/issues/66358)] *Tracking issue for \`UnsafeCell::raw\_get\`* - [[76901](https://github.com/rust-lang/rust/pull/76901)] *Implement RFC 2500 Needle API (Part 1)* ### Needs decision - [7 `rust-lang/rust` `T-libs-api` `I-needs-decision` items](https://github.com/rust-lang/rust/issues?q=is:open+label:T-libs-api+label:I-needs-decision) - [[25053](https://github.com/rust-lang/rust/issues/25053)] *UnsafeCell should implement the Copy trait* - [[26951](https://github.com/rust-lang/rust/issues/26951)] `P-low` *Abort on some large allocation requests, Panic on other* - [[37868](https://github.com/rust-lang/rust/issues/37868)] *std::process::Command's current\_dir behaves differently on Unix and Windows, with respect to relative exe paths* - [[56889](https://github.com/rust-lang/rust/issues/56889)] *Write::write\_all erroring when encountering Ok(0) interacts poorly with the contract of Write::write* - [[59878](https://github.com/rust-lang/rust/issues/59878)] *Box\<\[T\]\> should have an IntoIter implementation.* - [[62726](https://github.com/rust-lang/rust/issues/62726)] *Tracking issue for io\_slice\_advance* - [[87228](https://github.com/rust-lang/rust/issues/87228)] *Decide whether \`asm!\` and/or \`global\_asm!\` should be exported from the prelude.* ## Actions - [ ] Reply to all issues/PRs discussed in this meeting, or add them to the [open action items](https://hackmd.io/ovrbJj6CRduRgSA0Wzg2zg). _Generated by [fully-automatic-rust-libs-team-triage-meeting-agenda-generator](https://github.com/rust-lang/libs-team/tree/main/tools/agenda-generator)_