Drop support for non-syroot proc macro ABIs
This makes some bigger changes to how we handle the proc-macro-srv things, for one it is now an empty crate if built without the `sysroot-abi` feature, this simplifies some things dropping the need to put the feature cfg in various places. The cli wrapper now actually depends on the server, instead of being part of the server that is just exported, that way we can have a true dummy server that just errors on each request if no sysroot support was specified.
With #13552 the depencency of on the command-group crate was introduced, which also
introduced a dependency on nix. That version of nix does not build on Haiku. This
change introduces a newer version of command-group, which also updates nix from
0.22.3 to 0.26.1, which is compatible on Haiku.
feat: Package Windows release artifacts as ZIP and add symbols file
Closes#13872Closes#7747
CC #10371
This allows us to ship a format that's easier to handle on Windows. As a bonus, we can also include the PDB, to get useful stack traces. Unfortunately, it adds a couple of dependencies to `xtask`, increasing the debug build times from 1.28 to 1.58 s (release from 1.60s to 2.20s) on my system.
Compute data layout of types
cc #4091
Things that aren't working:
* Closures
* Generators (so no support for `Future` I think)
* Opaque types
* Type alias and associated types which may need normalization
Things that show wrong result:
* ~Enums with explicit discriminant~
* SIMD types
* ~`NonZero*` and similar standard library items which control layout with special attributes~
At the user level, I didn't put much work, since I wasn't confident about what is the best way to present this information. Currently it shows size and align for ADTs, and size, align, offset for struct fields, in the hover, similar to clangd. I used it some days and I feel I liked it, but we may consider it too noisy and move it to an assist or command.
