Stream: beginners

Topic: macos version nightlies

Anton (Dec 09 2022 at 13:56):

Announcement: Macos nightlies no longer contain a version number, backwards compatibility seems to be working, so for x86_64, nightlies are generated on macos 11 and for apple silicon they are generated on macos 12. Trying to use zig 0.9.1 on macos 13 still does not work though, so zig platforms can't be used.

Nikita Mounier (Dec 09 2022 at 23:08):

Hi, just downloaded the apple silicon nightly on MacOS 13, but I can't get it to work – even with platforms other than Zig. Here's what I get for ./roc examples/platform-switching/rocLovesRust.roc:

🔨 Rebuilding platform...
An internal compiler expectation was broken.
This is definitely a compiler bug.
Please file an issue here: https://github.com/roc-lang/roc/issues/new/choose
thread '<unnamed>' panicked at 'Error:
    Failed to rebuild src/lib.rs:
        The executed command was:
            cargo build --lib
        stderr of that command:
            error: failed to load manifest for dependency `roc_std`

Caused by:
  failed to parse manifest at `/Users/nikitamounier/Desktop/roc_nightly-macos_apple_silicon-2022-12-09-234f9f5/crates/roc_std/Cargo.toml`

Caused by:
  namespaced features with the `dep:` prefix are only allowed on the nightly channel and requires the `-Z namespaced-features` flag on the command-line
', crates/compiler/build/src/link.rs:1597:21

Nikita Mounier (Dec 09 2022 at 23:09):

Here's the rust backtrace if that's helpful:

stack backtrace:
   0: _rust_begin_unwind
   1: core::panicking::panic_fmt
   2: roc_build::link::run_build_command
   3: roc_build::link::rebuild_host
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
thread 'main' panicked at 'Failed to (re)build platform.: Any { .. }', crates/cli/src/build.rs:342:46
stack backtrace:
   0: _rust_begin_unwind
   1: core::panicking::panic_fmt
   2: core::result::unwrap_failed
   3: roc_cli::build::build_file
   4: roc_cli::build
   5: roc::main

Folkert de Vries (Dec 09 2022 at 23:27):

what is your rust version?

Folkert de Vries (Dec 09 2022 at 23:27):

it looks like it might be outdated?

Anton (Dec 10 2022 at 08:56):

We are on rust 1.64.0, I'll add a rust-toolchain file to the example to prevent this in the future.

Drew Lazzeri (Dec 14 2022 at 18:30):

I had this error, then fixed it with rustup update 1.64, but found another error which required updating my xcode command line tools (in case someone else runs into the same problem)

Anton (Dec 14 2022 at 18:40):

Nice that it works :)
Do you still have the error message that required updating xcode? I'd like to save it in an issue so that it is easier to discover.

Drew Lazzeri (Dec 15 2022 at 06:45):

I don't, sorry! Updating xcode was a big endeavor with as little free space as I have left :sweat_smile:

Anton (Dec 15 2022 at 08:58):

All good, xcode is indeed ridiculously large

Last updated: Jul 26 2025 at 12:14 UTC