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John Ericson 51f1ecaa59 Clean up cross bootstrapping
For a long time, we've had `crossLibcStdenv`, `*Cross` libc attributes,
and `*bsdCross` pre-libc package sets. This was always bad because
having "cross" things is "not declarative": the naming doesn't reflect
what packages *need* but rather how we *provide* something. This is
ugly, and creates needless friction between cross and native building.

Now, almost all of these `*Cross` attributes are gone: just these are
kept:

- Glibc's and Musl's are kept, because those packages are widely used
  and I didn't want to risk changing the native builds of those at this
  time.

- generic `libcCross`, `theadsCross`, and friends, because these relate
  to the convolulted GCC bootstrap which still needs to be redone.

The BSD and obscure Linux or freestnanding libcs have conversely all
been made to use a new `stdenvNoLibc`, which is like the old
`crossLibcStdenv` except:

1. It usable for native and cross alike

2. It named according to what it *is* ("a standard environment without
   libc but with a C compiler"), rather than some non-compositional
   jargon ("the stdenv used for building libc when cross compiling",
   yuck).

I should have done this change long ago, but I was stymied because of
"infinite recursions". The problem was that in too many cases we are
overriding `stdenv` to *remove* things we don't need, and this risks
cyles since those more minimal stdenvs are used to build things in the
more maximal stdenvs.

The solution is to pass `stage.nix` `stdenvNoCC`, so we can override to
*build up* rather than *tear down*. For now, the full `stdenv` is also
passed, so I don't need to change the native bootstraps, but I can see
this changing as we make things more uniform and clean those up.

Finally, the BSDs also had to be cleaned up, since they have a few
pre-libc dependencies, demanding a systematic approach. I realized what
rhelmot did in 61202561d9 (specify what
packages just need `stdenvNoLibc`) is definitely the right approach for
this, and adjusted NetBSD and OpenBSD to likewise use it.
2024-06-18 17:04:16 -04:00
.github github/workflows/check-nix-format: add maintainers files 2024-06-17 21:59:36 -03:00
doc Merge pull request #315233 from numinit/android-studio-full 2024-06-16 08:35:21 +02:00
lib lib.systems: Default useLLVM to true with OpenBSD too 2024-06-18 13:23:58 -04:00
maintainers Merge pull request #304866 from hummeltech/MapnikDarwinFix 2024-06-18 18:13:12 +02:00
nixos nixos/systemd-boot: guard assertion messages against eval failures 2024-06-18 11:30:16 -07:00
pkgs Clean up cross bootstrapping 2024-06-18 17:04:16 -04:00
.editorconfig Merge pull request #288812 from hercules-ci/lib-flake-version 2024-03-03 18:19:00 +01:00
.git-blame-ignore-revs .git-blame-ignore-revs: add PHP packages reformating 2024-05-23 11:42:36 +02:00
.gitattributes
.gitignore Merge pull request #263348 from chayleaf/redundant-result 2024-03-11 11:44:37 +01:00
.mailmap maintainers: update email for tomodachi94 2024-05-27 12:59:10 -07:00
.version .version: Make lib/.version source of truth 2024-02-26 22:34:10 +01:00
CONTRIBUTING.md CONTRIBUTING.md: Add nixpkgs-merge-bot usage paragraph 2024-05-22 19:08:20 +02:00
COPYING COPYING: 2023 -> 2024 2024-01-30 16:49:51 +01:00
default.nix
flake.nix flake.nix: remove power64 from from nixos check due to broken package 2024-06-17 16:40:39 -07:00
README.md Release NixOS 24.05 2024-05-31 20:17:44 +02:00

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Nixpkgs is a collection of over 100,000 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

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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:

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Nixpkgs and NixOS are built and tested by our continuous integration system, Hydra.

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.

For more information about contributing to the project, please visit the contributing page.

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