Flake support for darwin architecture

[aSapien]

Hi, thanks for an amazing project!

Currently, the flake only exposes linux arch builds:

neomacs/flake.nix

Line 31 in c569a74

supportedSystems = [ "x86_64-linux" "aarch64-linux" ];

Is it possible to add aarch64-darwin to that list, along with the respective dependencies, so that neomacs becomes installable on nix-darwin managed systems?

[eval-exec]

Is it possible to add aarch64-darwin to that list, along with the respective dependencies, so that neomacs becomes installable on nix-darwin managed systems?

Great idea, I think we can.

[aSapien]

@eval-exec I was able to compile neomacs on apple m1, but the build seem to have failed in configurePhase:

neomacs> 
neomacs> Run 'make' to build Emacs, then run 'src/emacs' to test it.
neomacs> Run 'make install' in order to build an application bundle.
neomacs> The application will go to nextstep/Emacs.app and can be run or moved
neomacs> from there.
neomacs> The application will be fully self-contained.
neomacs> 
neomacs> configure: creating ./config.status
neomacs> config.status: creating src/verbose.mk
neomacs> config.status: creating src/emacs-module.h
neomacs> config.status: error: cannot find input file: 'nextstep/templates/Info.plist.in'

[eval-exec]

@aSapien Hello, could you please upload the ./config.log file? it may help to investigate.
(I’m a Linux user and don’t have an Apple machine to try building NeoMacs, although I believe it’s possible to build it on a Mac.)

[C1oud555]

I encountered this issue too, I guess the cause is
What window system should Emacs use? nextstep

[eval-exec]

@C1oud555 Hello, could you try add '--without-ns --with-file-notification=no for ./configure, can it build success?

[C1oud555]

I tried, two issue founded on master branch:

1. compile comands should add backend:
   cargo build --release --manifest-path rust/neomacs-display/Cargo.toml \ --no-default-features --features "video,neo-term,core-backend-emacs-c "
2. egl seems not available on macos
   configure: error: EGL required for Neomacs zero-copy rendering

[eval-exec]

@C1oud555 Try remove the video from cargo's --features.

configure: error: EGL required for Neomacs zero-copy rendering

1. Could you please tell me more about your operating system info? and CPU/GPU hardware info?
2. Could you try to install mesa package? then rebulid cargo with video feature added.

(Oh! neomacs should use Metal on macos, but I don't have an macos machine to test)

[C1oud555]

remove "video". still failed

info

system info: Darwin 25.3.0 Darwin Kernel Version 25.3.0: Wed Jan 28 20:53:01 PST 2026; root:xnu-12377.81.4~5/RELEASE_ARM64_T8103 arm64
cpu: apple silicon M1

after install mesa

build command: cargo build --release --manifest-path rust/neomacs-display/Cargo.toml --no-default-features --features "video,neo-term,core-backend-emacs-c "
configure command: ./configure --with-neomacs --with-neovm-core-backend=emacs-c --without-ns --with-file-notification=no
configure succeed! compile succeed!

but crashed when I run it with info:

thread '<unnamed>' (5047210) panicked at ~/.cargo/registry/src/mirrors.tuna.tsinghua.edu.cn-4dc01642fd091eda/winit-0.30.12/src/platform_impl/macos/event_loop.rs:221:14:
on macOS, `EventLoop` must be created on the main thread!
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
2026-02-27T13:46:31.212089Z ERROR neomacs_display::ffi::threaded: Render thread disconnected, synthesizing WindowClose
2026-02-27T13:46:31.213414Z ERROR neomacs_display::ffi::threaded: Render thread disconnected, synthesizing WindowClose
2026-02-27T13:46:31.239693Z ERROR neomacs_display::ffi::threaded: Render thread disconnected, synthesizing WindowClose
2026-02-27T13:46:31.240186Z ERROR neomacs_display::ffi::threaded: Render thread disconnected, synthesizing WindowClose
DEBUG: kill-emacs called! arg=0x0, restart=0x0
  Lisp backtrace:
    [0] kill-emacs
    [1] save-buffers-kill-emacs
    [2] handle-delete-frame
    [3] funcall-interactively
    [4] call-interactively
    [5] command-execute
  End backtrace.

the mesa also installed molten-vk which translate vulkan to metal

Is there something I can do to help with metal?

[eval-exec]

but crashed when I run it with info:

Which git commit rev hash of neomacs are you using?
Does https://github.com/eval-exec/neomacs/releases/tag/v0.0.1 compile and running good?

[C1oud555]

above is using master

0.0.1

failed with missing libwpe
seems like after ./configure, while make it , it also tries to compile neomacs-display. although I already run cargo build command

[eval-exec]

above is using master

neomacs don't have master branch, I think you mean main

failed with missing libwpe

weird! you didn't specify wpe-webkit feature in cargo build --release, then neomacs shouldn't need libwpe

[eval-exec]

@yibie Hello, Did you build neomacs v0.0.1 on your Macos machine successfully?

[eval-exec]

@C1oud555 Could you please return to latest main branch (remember execute git pull), compile and run emacs with RUST_LOG=debug NEOMACS_LOG=debug env vars, and upload it's verbose debug log output file?