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Packages that use libtool run it as a wrapper around the linker. Before calling the linker, libtool will determine what libraries would be linked, and check if there's a corresponding libtool archive (libfoo.la) file in the same directory . This file contains extra information about the library. This is especially important for static linking, because static archives don't contain dependency information, so we need libtool to use the .la files to figure out which libraries actually need to be linked against. But in Nixpkgs, this has never worked. libtool isn't able to find any libraries, because only the compiler wrapper knows how to find them, and the compiler wrapper is opaque to libtool. This is why pkgsStatic.util-linuxMinimal doesn't build prior to this patch — it depends on libpam, which depends on libaudit, and if libtool can't find the .la file, nothing will tell the linker to also link against libaudit when linking libpam. (It was previously possible to build a static util-linux, because linux-pam only recently had the audit dependency added.) There are a couple of ways we could fix this, so that libtool knows where to look for .la files. * Set LD_LIBRARY_PATH/DYLD_LIBRARY_PATH/whatever, which libtool will examine. This would have major side effects though, because the dynamic linker looks at it too. * Inject libtool scripts with the appropriate information. That's what I've done here. It was the obvious choice because we're already finding and modifying the libtool scripts, to remove paths outside the Nix store that libtool might check in unsandboxed builds. Instead of emptying out the system paths, we can repopulate it with our own library paths. (We can't use a wrapper like we do for other tools in Nixpkgs, because libtool scripts are often distributed in source tarballs, so we can't just add a wrapped version of libtool as a dependency. That's why there's already the fixLibtool function in stdenv.) With this change, libtool is able to discover .la files, and pkgsStatic.util-linuxMinimal can build again, linking correctly against libpam and libaudit. |
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Nixpkgs is a collection of over 80,000 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
- NixOS Weekly
- Community-maintained wiki
- Community-maintained list of ways to get in touch (Discord, Telegram, IRC, etc.)
Other Project Repositories
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 Artwork - NixOS artwork
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 21.05 release
- Tests for unstable/master
- Tests for the NixOS 21.05 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 a lot at first, it helps 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. When pull requests are made, our tooling automation bot, OfBorg will perform various checks to help ensure expression quality.
The Nixpkgs maintainers are people who have assigned themselves to maintain specific individual packages. We encourage people who care about a package to assign themselves as a maintainer. When a pull request is made against a package, OfBorg will notify the appropriate maintainer(s). The Nixpkgs committers are people who have been given permission to merge.
Most contributions are based on and merged into these branches:
masteris the main branch where all small contributions gostagingis branched from master, changes that have a big impact on Hydra builds go to this branchstaging-nextis branched from staging and only fixes to stabilize and security fixes with a big impact on Hydra builds should be contributed to this branch. This branch is merged into master when deemed of sufficiently high quality
For more information about contributing to the project, please visit the contributing page.
Donations
The infrastructure for NixOS and related projects is maintained by a nonprofit organization, the NixOS Foundation. To ensure the continuity and expansion of the NixOS infrastructure, we are looking for donations to our organization.
You can donate to the NixOS foundation through SEPA bank transfers or by using Open Collective:
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.