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Nix, the purely functional package manager
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Jason Yundt 5e407e6abb Sometimes build nix-manual when cross compiling
Before this change, if you were cross compiling Nix, then the nix-manual
subproject would never get built. In some situations, it makes sense to
not build the nix-manual subproject when cross compiling. For example,
if the build system is x86_64 and the host system is riscv64, then it
makes sense to not build the manual. Building the manual requires
executing certain build artifacts, and you can’t run x86_64 executables
on riscv64 systems.

That being said, there are some situations where it does make sense to
build the nix-manual subproject when cross compiling. For example, if
the build system is x86_64 and the host system is i686, then it doesn’t
make sense to not build the manual. You can run i686 executables on
x86_64 systems just fine.

This change makes it so that the nix-manual subproject will sometimes
get built when cross compiling. Specifically, the nix-manual subproject
will get built as long as the doc-gen option is enabled and the build
system is capable of running host binaries.

---

The main motivation behind this change is to fix this Nixpkgs issue [1].
Building pkgs.nixStatic counts as cross compiling Nix, and
pkgs.nixStatic is supposed to produce a man output. Building
pkgs.nixStatic currently fails because it isn’t actually producing a man
output. That issue will go away once this commit gets backported to Nix
2.28.x.

[1]: <https://github.com/NixOS/nixpkgs/issues/426410>
2025-07-26 15:00:02 -04:00
.github Update developer facing links to nix.dev 2025-07-25 10:59:44 +02:00
ci/gha/profile-build ci: Add build profiling job 2025-07-20 18:26:26 +03:00
contrib function-trace: always show the trace 2019-09-18 23:23:21 +02:00
doc/manual docs, messages: Resolve nixos.org/manual/nix/stable redirect 2025-07-25 10:18:13 +02:00
maintainers Drop a ton of files that should just get formatted 2025-07-18 12:46:51 -04:00
misc libstore: Don't default build-dir to temp-dir, store setting 2025-06-22 16:49:44 +02:00
nix-meson-build-support Fix nix_system_cpu on i686-linux 2025-07-24 18:06:06 +02:00
packaging doc: Add brief comments to the components 2025-07-19 16:27:55 +03:00
scripts docs, messages: Resolve nixos.org/manual/nix/stable redirect 2025-07-25 10:18:13 +02:00
src Update developer facing links to nix.dev 2025-07-25 10:59:44 +02:00
tests Fix nix_system_cpu on i686-linux 2025-07-24 18:06:06 +02:00
.clang-format Update clang-format with fixing namespace coments, and separate definition blocks 2025-07-18 12:46:51 -04:00
.clang-tidy Add .clang-tidy 2024-02-01 01:01:39 +01:00
.dir-locals.el .dir-locals.el: Set c-block-comment-prefix 2020-07-10 11:21:06 +02:00
.editorconfig No global eval settings in libnixexpr 2024-06-24 12:15:16 -04:00
.git-blame-ignore-revs Update .git-blame-ignore-revs to ignore the mass reformatting 2025-07-18 12:47:27 -04:00
.gitignore Overriding gtest with gmock 2025-05-31 07:41:27 -07:00
.mergify.yml Update .mergify.yml 2025-07-08 16:18:53 +02:00
.shellcheckrc housekeeping: shellcheck for tests/functional/ca/build-cache.sh 2024-06-12 17:41:16 -04:00
.version Bump version 2025-07-08 16:14:50 +02:00
CITATION.cff chore: PhD thesis as reference in CITATION.cff 2024-05-18 20:05:22 +02:00
CONTRIBUTING.md Update developer facing links to nix.dev 2025-07-25 10:59:44 +02:00
COPYING * Change this to LGPL to keep the government happy. 2006-04-25 16:41:06 +00:00
default.nix Format .nix files 2025-01-24 17:04:02 +01:00
docker.nix docker: set default parameters values 2025-07-13 22:49:12 +02:00
flake.lock flake.lock: Update 2025-05-15 11:31:34 +02:00
flake.nix overlays.default: Only set nix 2025-07-19 16:27:55 +03:00
HACKING.md Rename doc/manual{src -> source} 2024-10-14 11:21:24 -04:00
meson.build Sometimes build nix-manual when cross compiling 2025-07-26 15:00:02 -04:00
meson.format flake: Add meson formatter 2025-06-11 22:08:03 +00:00
meson.options flake: Add meson formatter 2025-06-11 22:08:03 +00:00
README.md fix(docs): update Matrix channel links 2025-05-04 12:17:48 +02:00
shell.nix Remove url literals 2022-01-24 13:28:21 +01:00

Nix

Open Collective supporters CI

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.

License

Nix is released under the LGPL v2.1.