nixpkgs/flake.nix

109 lines
4.3 KiB
Nix
Raw Normal View History

2020-02-10 15:36:53 +00:00
# Experimental flake interface to Nixpkgs.
# See https://github.com/NixOS/rfcs/pull/49 for details.
2019-02-11 11:27:17 +00:00
{
description = "A collection of packages for the Nix package manager";
2019-08-30 09:48:43 +00:00
outputs = { self }:
2019-06-19 10:43:26 +00:00
let
jobs = import ./pkgs/top-level/release.nix {
2019-08-30 09:48:43 +00:00
nixpkgs = self;
2019-06-19 10:43:26 +00:00
};
2019-10-15 16:17:21 +00:00
libVersionInfoOverlay = import ./lib/flake-version-info.nix self;
2023-09-06 13:08:46 +00:00
lib = (import ./lib).extend libVersionInfoOverlay;
forAllSystems = lib.genAttrs lib.systems.flakeExposed;
2019-06-19 10:43:26 +00:00
in
2019-02-11 11:27:17 +00:00
{
lib = lib.extend (final: prev: {
2022-01-02 13:11:21 +00:00
nixos = import ./nixos/lib { lib = final; };
nixosSystem = args:
2022-06-09 09:38:30 +00:00
import ./nixos/lib/eval-config.nix (
{
lib = final;
2022-06-09 09:38:30 +00:00
# Allow system to be set modularly in nixpkgs.system.
# We set it to null, to remove the "legacy" entrypoint's
# non-hermetic default.
system = null;
modules = args.modules ++ [
# This module is injected here since it exposes the nixpkgs self-path in as
# constrained of contexts as possible to avoid more things depending on it and
# introducing unnecessary potential fragility to changes in flakes itself.
#
# See: failed attempt to make pkgs.path not copy when using flakes:
# https://github.com/NixOS/nixpkgs/pull/153594#issuecomment-1023287913
({ config, pkgs, lib, ... }: {
config.nixpkgs.flake.source = self.outPath;
})
];
} // builtins.removeAttrs args [ "modules" ]
2022-06-09 09:38:30 +00:00
);
});
2019-02-11 11:27:17 +00:00
checks.x86_64-linux = {
tarball = jobs.tarball;
# Test that ensures that the nixosSystem function can accept a lib argument
2023-12-30 10:25:54 +00:00
# Note: prefer not to extend or modify `lib`, especially if you want to share reusable modules
# alternatives include: `import` a file, or put a custom library in an option or in `_module.args.<libname>`
nixosSystemAcceptsLib = (self.lib.nixosSystem {
lib = self.lib.extend (final: prev: {
ifThisFunctionIsMissingTheTestFails = final.id;
});
modules = [
./nixos/modules/profiles/minimal.nix
({ lib, ... }: lib.ifThisFunctionIsMissingTheTestFails {
# Define a minimal config without eval warnings
nixpkgs.hostPlatform = "x86_64-linux";
boot.loader.grub.enable = false;
fileSystems."/".device = "nodev";
2023-12-30 10:25:54 +00:00
# See https://search.nixos.org/options?show=system.stateVersion&query=stateversion
system.stateVersion = lib.versions.majorMinor lib.version; # DON'T do this in real configs!
})
];
}).config.system.build.toplevel;
};
2019-05-29 19:21:56 +00:00
2019-06-19 10:43:26 +00:00
htmlDocs = {
nixpkgsManual = jobs.manual;
nixosManual = (import ./nixos/release-small.nix {
2019-08-30 09:48:43 +00:00
nixpkgs = self;
2019-06-19 10:43:26 +00:00
}).nixos.manual.x86_64-linux;
};
# The "legacy" in `legacyPackages` doesn't imply that the packages exposed
# through this attribute are "legacy" packages. Instead, `legacyPackages`
# is used here as a substitute attribute name for `packages`. The problem
# with `packages` is that it makes operations like `nix flake show
# nixpkgs` unusably slow due to the sheer number of packages the Nix CLI
# needs to evaluate. But when the Nix CLI sees a `legacyPackages`
# attribute it displays `omitted` instead of evaluating all packages,
# which keeps `nix flake show` on Nixpkgs reasonably fast, though less
# information rich.
legacyPackages = forAllSystems (system:
(import ./. { inherit system; }).extend (final: prev: {
lib = prev.lib.extend libVersionInfoOverlay;
})
);
2019-09-13 17:01:23 +00:00
nixosModules = {
notDetected = ./nixos/modules/installer/scan/not-detected.nix;
2023-05-07 13:37:28 +00:00
/*
Make the `nixpkgs.*` configuration read-only. Guarantees that `pkgs`
is the way you initialize it.
Example:
{
imports = [ nixpkgs.nixosModules.readOnlyPkgs ];
nixpkgs.pkgs = nixpkgs.legacyPackages.x86_64-linux;
}
*/
readOnlyPkgs = ./nixos/modules/misc/nixpkgs/read-only.nix;
2019-09-13 17:01:23 +00:00
};
2019-02-11 11:27:17 +00:00
};
}