Quoting from <https://github.com/NixOS/nixpkgs/issues/464323>: > When using confinement.enable = true for an instanced systemd service, > the 2nd instance will fail to start if the 1st instance is still > running. > > This only happens with confinement.enable = true;. Removing this > option causes both service instances to succeed. Maybe this happens > because the /run/confinement/fortune directory is shared between the > instances. The reason why this happens is that the root directory is set to "/run/confinement/${mkPathSafeName name}", which is the non-expanded unit name rather than the full unit name with the instance in case of a template unit. So when a template unit "foo@.service" is involved, the root directory is then "/run/confinement/foo_" regardless of instance, so foo@bar.service uses the same directory as foo@baz.service and when the first unit cleans up the root directory, it also makes it inaccessible for the unit started afterwards. I added a small property test to test concurrent invocations, so we cover this case and other issues that might come up with template units in a future refactor. Signed-off-by: aszlig <aszlig@nix.build>
Nixpkgs is a collection of over 120,000 software packages that can be installed with the Nix package manager. It also implements NixOS, a purely-functional Linux distribution.
Manuals
- NixOS Manual - how to install, configure, and maintain a purely-functional Linux distribution
- Nixpkgs Manual - contributing to Nixpkgs and using programming-language-specific Nix expressions
- Nix Package Manager Manual - how to write Nix expressions (programs), and how to use Nix command line tools
Community
- Discourse Forum
- Matrix Chat
- Official wiki
- Community-maintained list of ways to get in touch (Discord, Telegram, IRC, etc.)
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The sources of all official Nix-related projects are in the NixOS organization on GitHub. Here are some of the main ones:
- Nix - the purely functional package manager
- NixOps - the tool to remotely deploy NixOS machines
- nixos-hardware - NixOS profiles to optimize settings for different hardware
- Nix RFCs - the formal process for making substantial changes to the community
- NixOS homepage - the NixOS.org website
- hydra - our continuous integration system
- NixOS Branding - NixOS branding
Continuous Integration and Distribution
Nixpkgs and NixOS are built and tested by our continuous integration system, Hydra.
- Continuous package builds for unstable/master
- Continuous package builds for the NixOS 25.05 release
- Tests for unstable/master
- Tests for the NixOS 25.05 release
Artifacts successfully built with Hydra are published to cache at https://cache.nixos.org/. When successful build and test criteria are met, the Nixpkgs expressions are distributed via Nix channels.
Contributing
Nixpkgs is among the most active projects on GitHub. While thousands of open issues and pull requests might seem like a lot at first, it helps to consider it in the context of the scope of the project. Nixpkgs describes how to build tens of thousands of pieces of software and implements a Linux distribution. The GitHub Insights page gives a sense of the project activity.
Community contributions are always welcome through GitHub Issues and Pull Requests.
For more information about contributing to the project, please visit the contributing page.
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License
Nixpkgs is licensed under the MIT License.
Note
MIT license does not apply to the packages built by Nixpkgs, merely to the files in this repository (the Nix expressions, build scripts, NixOS modules, etc.). It also might not apply to patches included in Nixpkgs, which may be derivative works of the packages to which they apply. The aforementioned artifacts are all covered by the licenses of the respective packages.