forked from lix-project/lix
c536e00c9d
Hopefully this fixes "unexpected EOF" failures on macOS (#3137, #3605, #7242, #7702). The problem appears to be that under some circumstances, macOS discards the output written to the slave side of the pseudoterminal. Hence the parent never sees the "sandbox initialized" message from the child, even though it succeeded. The conditions are: * The child finishes very quickly. That's why this bug is likely to trigger in nix-env tests, since that uses a builtin builder. Adding a short sleep before the child exits makes the problem go away. * The parent has closed its duplicate of the slave file descriptor. This shouldn't matter, since the child has a duplicate as well, but it does. E.g. moving the close to the bottom of startBuilder() makes the problem go away. However, that's not a solution because it would make Nix hang if the child dies before sending the "sandbox initialized" message. * The system is under high load. E.g. "make installcheck -j16" makes the issue pretty reproducible, while it's very rare under "make installcheck -j1". As a fix/workaround, we now open the pseudoterminal slave in the child, rather than the parent. This removes the second condition (i.e. the parent no longer needs to close the slave fd) and I haven't been able to reproduce the "unexpected EOF" with this. |
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| .github | ||
| config | ||
| contrib | ||
| doc | ||
| m4 | ||
| maintainers | ||
| misc | ||
| mk | ||
| perl | ||
| scripts | ||
| src | ||
| tests | ||
| .dir-locals.el | ||
| .editorconfig | ||
| .gitignore | ||
| .version | ||
| boehmgc-coroutine-sp-fallback.diff | ||
| bootstrap.sh | ||
| configure.ac | ||
| COPYING | ||
| default.nix | ||
| docker.nix | ||
| flake.lock | ||
| flake.nix | ||
| local.mk | ||
| Makefile | ||
| Makefile.config.in | ||
| precompiled-headers.h | ||
| 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
On Linux and macOS the easiest way to install Nix is to run the following shell command (as a user other than root):
$ curl -L https://nixos.org/nix/install | sh
Information on additional installation methods is available on the Nix download page.
Building And Developing
See our Hacking guide in our manual for instruction on how to to set up a development environment and build Nix from source.
Additional Resources
- Nix manual
- Nix jobsets on hydra.nixos.org
- NixOS Discourse
- Matrix - #nix:nixos.org
- IRC - #nixos on libera.chat
License
Nix is released under the LGPL v2.1.