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Florian Klink 07c4056179 gnats: format hardened flag isn't supported When invoking a simple Ada program with `gcc` from `gnats10`, the following warnings are shown: ``` $ gcc -c conftest.adb gnat1: warning: command-line option ‘-Wformat=1’ is valid for C/C++/ObjC/ObjC++ but not for Ada gnat1: warning: command-line option ‘-Wformat-security’ is valid for C/C++/ObjC/ObjC++ but not for Ada gnat1: warning: ‘-Werror=’ argument ‘-Werror=format-security’ is not valid for Ada $ echo $? 0 ``` This is only spammy when compiling Ada programs inside a Nix derivation, but certain configure scripts (such as the ./configure script from the gcc that's built by coreboot's `make crossgcc` command) fail entirely when getting that warning output. https://nixos.wiki/wiki/Coreboot currently suggests manually running > NIX_HARDENING_ENABLE="${NIX_HARDENING_ENABLE/ format/}" make crossgcc … but actually teaching the nixpkgs-provided cc wrapper that `format` isn't supported as a hardening flag seems to be the more canonical way to do this in nixpgks. After this, Ada programs still compile: ``` $ gcc -c conftest.adb $ echo $? 0 ``` And the compiler output is empty.		2020-12-23 01:51:14 +01:00
.github	STALE-BOT.md: Mention github not notifying	2020-12-09 23:24:02 +02:00
doc	Merge pull request #106845 from AndersonTorres/wip-documentation	2020-12-17 18:19:11 +01:00
lib	Merge pull request #97145 from lheckemann/initrd-improvements	2020-12-18 18:15:27 +01:00
maintainers	nvimpager: init at 0.9 (#107057 )	2020-12-22 10:11:02 +01:00
nixos	nixos/udev: harmonize extraRules example	2020-12-22 11:16:29 +01:00
pkgs	gnats: format hardened flag isn't supported	2020-12-23 01:51:14 +01:00
.editorconfig	.editorconfig: indent_style excludes	2020-11-10 20:47:11 +10:00
.gitattributes	gitattributes: disable merge=union in all-packages	2018-03-27 11:03:03 -05:00
.gitignore	git ignore __pycache__ folders	2020-08-16 11:30:11 +02:00
.version	21.03 is Okapi	2020-09-07 14:20:35 -07:00
COPYING	COPYING: include 2020	2020-01-11 15:17:22 -08:00
default.nix	docs: add -L to remaining curl install commands	2020-09-11 12:14:07 -07:00
flake.nix	flake.nix: allow inclusion of `nixpkgs` as `path:/.../`	2020-10-13 12:05:19 +02:00
README.md	readme: update reference to number of packages	2020-11-29 16:18:12 -08:00

README.md

Nixpkgs is a collection of over 60,000 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
IRC - #nixos on freenode.net
NixOS Weekly
Community-maintained wiki
Community-maintained list of ways to get in touch (Discord, Matrix, Telegram, other IRC channels, 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.

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:

master is the main branch where all small contributions go
staging is branched from master, changes that have a big impact on Hydra builds go to this branch
staging-next is 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 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.