1286d5db78
On macOS, poll() is fundamentally broken for HUP detection. It loses event subscriptions when EVFILT_READ fires without matching the requested events in the pollfd. This causes daemon processes to linger after client disconnect. This commit replaces poll() with kqueue on macOS, which is what poll() uses internally but without the bugs. The kqueue implementation uses EVFILT_READ which works for both sockets and pipes, avoiding EVFILT_SOCK which only works for sockets. On Linux and other platforms, we continue using poll() with the standard POSIX behavior where POLLHUP is always reported regardless of requested events. Based on work from the Lix project (https://git.lix.systems/lix-project/lix) commit 69ba3c92db3ecca468bcd5ff7849fa8e8e0fc6c0 Fixes: https://github.com/NixOS/nix/issues/13847 Related: https://git.lix.systems/lix-project/lix/issues/729 Apple bugs: rdar://37537852 (poll), FB17447257 (poll) Co-authored-by: Jade Lovelace <jadel@mercury.com> |
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| doc/manual | ||
| maintainers | ||
| misc | ||
| nix-meson-build-support | ||
| packaging | ||
| scripts | ||
| src | ||
| tests | ||
| .clang-format | ||
| .clang-tidy | ||
| .dir-locals.el | ||
| .editorconfig | ||
| .git-blame-ignore-revs | ||
| .gitignore | ||
| .mergify.yml | ||
| .shellcheckrc | ||
| .version | ||
| CITATION.cff | ||
| CONTRIBUTING.md | ||
| COPYING | ||
| default.nix | ||
| docker.nix | ||
| flake.lock | ||
| flake.nix | ||
| HACKING.md | ||
| meson.build | ||
| meson.format | ||
| meson.options | ||
| README.md | ||
| shell.nix | ||
Nix
Nix is a powerful package manager for Linux and other Unix systems that makes package management reliable and reproducible. Please refer to the Nix manual for more details.
Installation and first steps
Visit nix.dev for installation instructions and beginner tutorials.
Full reference documentation can be found in the Nix manual.
Building and developing
Follow instructions in the Nix reference manual to set up a development environment and build Nix from source.
Contributing
Check the contributing guide if you want to get involved with developing Nix.
Additional resources
Nix was created by Eelco Dolstra and developed as the subject of his PhD thesis The Purely Functional Software Deployment Model, published 2006. Today, a world-wide developer community contributes to Nix and the ecosystem that has grown around it.
- The Nix, Nixpkgs, NixOS Community on nixos.org
- Official documentation on nix.dev
- Nixpkgs is the largest, most up-to-date free software repository in the world
- NixOS is a Linux distribution that can be configured fully declaratively
- Discourse
- Matrix: #users:nixos.org for user support and #nix-dev:nixos.org for development
License
Nix is released under the LGPL v2.1.