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flake.nix
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flake.nix
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{
description = "A scrollable-tiling Wayland compositor.";
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
nixpkgs-stable.url = "github:NixOS/nixpkgs/nixos-24.05";
flake-parts.url = "github:hercules-ci/flake-parts";
niri-unstable.url = "github:YaLTeR/niri";
niri-unstable.flake = false;
niri-stable.url = "github:YaLTeR/niri/v0.1.9";
niri-stable.flake = false;
xwayland-satellite-stable.url = "github:Supreeeme/xwayland-satellite/v0.4";
xwayland-satellite-stable.flake = false;
xwayland-satellite-unstable.url = "github:Supreeeme/xwayland-satellite";
xwayland-satellite-unstable.flake = false;
};
outputs = inputs @ {
self,
flake-parts,
nixpkgs,
nixpkgs-stable,
...
}: let
call = nixpkgs.lib.flip import {
inherit inputs kdl docs binds settings;
inherit (nixpkgs) lib;
};
kdl = call ./kdl.nix;
binds = call ./parse-binds.nix;
docs = call ./generate-docs.nix;
settings = call ./settings.nix;
stylix-module = call ./stylix.nix;
stable-revs = import ./refs.nix;
date = {
year = builtins.substring 0 4;
month = builtins.substring 4 2;
day = builtins.substring 6 2;
hour = builtins.substring 8 2;
minute = builtins.substring 10 2;
second = builtins.substring 12 2;
};
fmt-date = raw: "${date.year raw}-${date.month raw}-${date.day raw}";
fmt-time = raw: "${date.hour raw}:${date.minute raw}:${date.second raw}";
version-string = orig-ver: src:
if stable-revs ? ${src.rev}
then "stable ${orig-ver}"
else "unstable ${fmt-date src.lastModifiedDate} (commit ${src.rev})";
package-version = orig-ver: src:
if stable-revs ? ${src.rev}
then orig-ver
else "${orig-ver}-unstable-${src.shortRev}";
make-niri = {
src,
patches ? [],
rustPlatform,
pkg-config,
wayland,
systemdLibs,
eudev,
pipewire,
mesa,
libglvnd,
seatd,
libinput,
libxkbcommon,
libdisplay-info,
pango,
withDbus ? true,
withDinit ? false,
withScreencastSupport ? true,
withSystemd ? true,
}: let
manifest = builtins.fromTOML (builtins.readFile "${src}/Cargo.toml");
workspace-version = manifest.workspace.package.version;
in
rustPlatform.buildRustPackage {
pname = "niri";
version = package-version workspace-version src;
inherit src patches;
cargoLock = {
lockFile = "${src}/Cargo.lock";
allowBuiltinFetchGit = true;
};
nativeBuildInputs = [
pkg-config
rustPlatform.bindgenHook
];
buildInputs =
[
wayland
mesa
libglvnd
seatd
libinput
libdisplay-info
libxkbcommon
pango
]
++ nixpkgs.lib.optional withScreencastSupport pipewire
++ nixpkgs.lib.optional withSystemd systemdLibs # we only need udev, really.
++ nixpkgs.lib.optional (!withSystemd) eudev; # drop-in replacement for systemd-udev
buildNoDefaultFeatures = true;
buildFeatures =
nixpkgs.lib.optional withDbus "dbus"
++ nixpkgs.lib.optional withDinit "dinit"
++ nixpkgs.lib.optional withScreencastSupport "xdp-gnome-screencast"
++ nixpkgs.lib.optional withSystemd "systemd";
passthru.providedSessions = ["niri"];
# we want backtraces to be readable
dontStrip = true;
RUSTFLAGS = [
"-C link-arg=-Wl,--push-state,--no-as-needed"
"-C link-arg=-lEGL"
"-C link-arg=-lwayland-client"
"-C link-arg=-Wl,--pop-state"
"-C debuginfo=line-tables-only"
];
# previously, the second line was part of RUSTFLAGS above
# but i noticed it stopped working? because it doesn't interpolate the env var anymore.
#
# i don't know when or why it stopped working. but moving it here fixes it.
# the first line was unnecessary previously because this should be the default
# https://github.com/NixOS/nixpkgs/blob/11cf80ae321c35132c1aff950f026e9783f06fec/pkgs/build-support/rust/build-rust-crate/build-crate.nix#L19
# but for some reason it isn't. so i'm doing it manually.
#
# the purpose is to make backtraces more readable. the first line strips the useless `/build` prefix
# and the second line makes niri-related paths more obvious as if they were based on pwd with `cargo run`
postPatch = ''
export RUSTFLAGS="$RUSTFLAGS --remap-path-prefix $NIX_BUILD_TOP=/"
export RUSTFLAGS="$RUSTFLAGS --remap-path-prefix $NIX_BUILD_TOP/source=./"
patchShebangs resources/niri-session
substituteInPlace src/utils/mod.rs --replace ${nixpkgs.lib.escapeShellArgs [
''pub fn version() -> String {''
''
#[allow(unreachable_code)]
pub fn version() -> String {
return "${version-string workspace-version src}".into();
''
]}
'';
postInstall =
# niri.desktop calls `niri-session` and that executable only works with systemd or dinit
nixpkgs.lib.optionalString (withSystemd || withDinit) ''
install -Dm0755 resources/niri-session -t $out/bin
install -Dm0644 resources/niri.desktop -t $out/share/wayland-sessions
''
# any of these features will enable dbus support
+ nixpkgs.lib.optionalString (withDbus || withScreencastSupport || withSystemd) ''
install -Dm0644 resources/niri-portals.conf -t $out/share/xdg-desktop-portal
''
# TODO: also install the dinit session files? does *anyone* even use this with dinit?
# also, wait until next release to do this, because this build needs to fit stable and unstable niri.
+ nixpkgs.lib.optionalString withSystemd ''
install -Dm0644 resources/niri{-shutdown.target,.service} -t $out/lib/systemd/user
'';
postFixup = ''
substituteInPlace $out/lib/systemd/user/niri.service --replace-fail /usr/bin $out/bin
'';
meta = {
description = "Scrollable-tiling Wayland compositor";
homepage = "https://github.com/YaLTeR/niri";
license = nixpkgs.lib.licenses.gpl3Only;
maintainers = with nixpkgs.lib.maintainers; [sodiboo];
mainProgram = "niri";
platforms = nixpkgs.lib.platforms.linux;
};
};
validated-config-for = pkgs: package: config:
pkgs.runCommand "config.kdl" {
inherit config;
passAsFile = ["config"];
buildInputs = [package];
} ''
niri validate -c $configPath
cp $configPath $out
'';
make-xwayland-satellite = {
src,
patches ? [],
rustPlatform,
pkg-config,
makeWrapper,
xwayland,
xcb-util-cursor,
withSystemd ? true,
}: let
manifest = builtins.fromTOML (builtins.readFile "${src}/Cargo.toml");
workspace-version = manifest.package.version;
in
rustPlatform.buildRustPackage {
pname = "xwayland-satellite";
version = package-version workspace-version src;
inherit src patches;
cargoLock = {
lockFile = "${src}/Cargo.lock";
allowBuiltinFetchGit = true;
};
nativeBuildInputs = [
pkg-config
rustPlatform.bindgenHook
];
buildInputs = [
xcb-util-cursor
makeWrapper
];
buildNoDefaultFeatures = true;
buildFeatures = nixpkgs.lib.optional withSystemd "systemd";
# All tests require a display server to be running.
doCheck = false;
postInstall =
''
wrapProgram $out/bin/xwayland-satellite \
--prefix PATH : "${nixpkgs.lib.makeBinPath [xwayland]}"
''
+ nixpkgs.lib.optionalString withSystemd ''
install -Dm0644 resources/xwayland-satellite.service -t $out/lib/systemd/user
'';
postFixup = nixpkgs.lib.optionalString withSystemd ''
substituteInPlace $out/lib/systemd/user/xwayland-satellite.service \
--replace-fail /usr/local/bin $out/bin
'';
meta = {
description = "Rootless Xwayland integration to any Wayland compositor implementing xdg_wm_base";
homepage = "https://github.com/Supreeeme/xwayland-satellite";
license = nixpkgs.lib.licenses.mpl20;
maintainers = with nixpkgs.lib.maintainers; [sodiboo];
mainProgram = "xwayland-satellite";
platforms = nixpkgs.lib.platforms.linux;
};
};
make-package-set = pkgs: {
niri-stable = pkgs.callPackage make-niri {
src = inputs.niri-stable;
};
niri-unstable = pkgs.callPackage make-niri {
src = inputs.niri-unstable;
};
xwayland-satellite-stable = pkgs.callPackage make-xwayland-satellite {
src = inputs.xwayland-satellite-stable;
withSystemd = false; # doesn't exist yet in this version
};
xwayland-satellite-unstable = pkgs.callPackage make-xwayland-satellite {
src = inputs.xwayland-satellite-unstable;
};
};
combined-closure = pkgs-name: pkgs:
pkgs.runCommand "niri-flake-packages-for-${pkgs-name}" {} (''
mkdir $out
''
+ builtins.concatStringsSep "" (nixpkgs.lib.mapAttrsToList (name: package: ''
ln -s ${package} $out/${name}
'')
(make-package-set pkgs)));
cached-packages-for = system:
nixpkgs.legacyPackages.${system}.runCommand "all-niri-flake-packages" {} (''
mkdir $out
''
+ builtins.concatStringsSep "" (nixpkgs.lib.mapAttrsToList (name: nixpkgs': ''
ln -s ${combined-closure name nixpkgs'.legacyPackages.${system}} $out/${name}
'') {
nixos-unstable = nixpkgs;
"nixos-24.05" = nixpkgs-stable;
}));
in
flake-parts.lib.mkFlake {inherit inputs;} {
systems = ["x86_64-linux" "aarch64-linux"];
perSystem = {
self',
inputs',
config,
system,
...
}: {
packages = make-package-set inputs'.nixpkgs.legacyPackages;
apps =
(
builtins.mapAttrs (
name: package: {
type = "app";
program = nixpkgs.lib.getExe package;
}
) (make-package-set inputs'.nixpkgs.legacyPackages)
)
// {
default = self'.apps.niri-stable;
};
checks = let
test-nixos-for = nixpkgs: modules:
(nixpkgs.lib.nixosSystem {
inherit system;
modules =
[
{
# This doesn't need to be a bootable system. It just needs to build.
system.stateVersion = "23.11";
fileSystems."/".fsType = "ext4";
fileSystems."/".device = "/dev/sda1";
boot.loader.systemd-boot.enable = true;
}
]
++ modules;
})
.config
.system
.build
.toplevel;
in {
cached-packages = cached-packages-for system;
empty-config-valid-stable = let
eval = nixpkgs.lib.evalModules {
modules = [
settings.module
{
config.programs.niri.settings = {};
}
];
};
in
validated-config-for inputs'.nixpkgs.legacyPackages self'.packages.niri-stable eval.config.programs.niri.finalConfig;
nixos-unstable = test-nixos-for nixpkgs [
self.nixosModules.niri
{
programs.niri.enable = true;
}
];
nixos-stable = test-nixos-for nixpkgs-stable [
self.nixosModules.niri
{
programs.niri.enable = true;
}
];
};
devShells.default = inputs'.nixpkgs.legacyPackages.mkShell {
packages = with inputs'.nixpkgs.legacyPackages; [
just
fish
fd
entr
moreutils
];
shellHook = ''
just hook 2>/dev/null
'';
};
formatter = inputs'.nixpkgs.legacyPackages.alejandra;
};
flake = {
overlays.niri = final: prev: (make-package-set final
// {
xwayland-satellite-nixpkgs = nixpkgs.lib.warn "please change pkgs.xwayland-satellite-nixpkgs -> pkgs.xwayland-satellite" prev.xwayland-satellite;
});
lib = {
inherit kdl;
internal = {
inherit make-package-set validated-config-for;
package-set = abort "niri-flake internals: `package-set.\${package} pkgs` is now `(make-package-set pkgs).\${package}`";
docs-markdown = docs.make-docs (settings.fake-docs {inherit fmt-date fmt-time;});
settings-module = settings.module;
};
};
homeModules.stylix = stylix-module;
homeModules.config = {
config,
pkgs,
...
}: let
cfg = config.programs.niri;
in {
imports = [
settings.module
];
options.programs.niri = {
package = nixpkgs.lib.mkOption {
type = nixpkgs.lib.types.package;
default = (make-package-set pkgs).niri-stable;
};
};
config.lib.niri = {
actions = nixpkgs.lib.mergeAttrsList (map ({
name,
fn,
...
}: {
${name} = fn;
}) (binds cfg.package.src));
};
config.xdg.configFile.niri-config = {
enable = cfg.finalConfig != null;
target = "niri/config.kdl";
source = validated-config-for pkgs cfg.package cfg.finalConfig;
};
};
nixosModules.niri = {
config,
options,
pkgs,
...
}: let
cfg = config.programs.niri;
in {
# The module from this flake predates the module in nixpkgs by a long shot.
# To avoid conflicts, we disable the nixpkgs module.
# Eventually, this module (e.g. `niri.nixosModules.niri`) will be deprecated
# in favour of other modules that aren't redundant with nixpkgs (and don't yet exist)
disabledModules = ["programs/wayland/niri.nix"];
options.programs.niri = {
enable = nixpkgs.lib.mkEnableOption "niri";
package = nixpkgs.lib.mkOption {
type = nixpkgs.lib.types.package;
default = (make-package-set pkgs).niri-stable;
};
};
options.niri-flake.cache.enable = nixpkgs.lib.mkOption {
type = nixpkgs.lib.types.bool;
default = true;
};
config = nixpkgs.lib.mkMerge [
(nixpkgs.lib.mkIf config.niri-flake.cache.enable {
nix.settings = {
substituters = ["https://niri.cachix.org"];
trusted-public-keys = ["niri.cachix.org-1:Wv0OmO7PsuocRKzfDoJ3mulSl7Z6oezYhGhR+3W2964="];
};
})
{
environment.systemPackages = [pkgs.xdg-utils];
xdg = {
autostart.enable = nixpkgs.lib.mkDefault true;
menus.enable = nixpkgs.lib.mkDefault true;
mime.enable = nixpkgs.lib.mkDefault true;
icons.enable = nixpkgs.lib.mkDefault true;
};
}
(nixpkgs.lib.mkIf cfg.enable {
services =
if nixpkgs.lib.strings.versionAtLeast config.system.nixos.release "24.05"
then {
displayManager.sessionPackages = [cfg.package];
}
else {
xserver.displayManager.sessionPackages = [cfg.package];
};
hardware =
if nixpkgs.lib.strings.versionAtLeast config.system.nixos.release "24.11"
then {
graphics.enable = nixpkgs.lib.mkDefault true;
}
else {
opengl.enable = nixpkgs.lib.mkDefault true;
};
})
(nixpkgs.lib.mkIf cfg.enable {
environment.systemPackages = [cfg.package];
xdg.portal = {
enable = true;
extraPortals = nixpkgs.lib.mkIf (
!cfg.package.cargoBuildNoDefaultFeatures || builtins.elem "xdp-gnome-screencast" cfg.package.cargoBuildFeatures
) [pkgs.xdg-desktop-portal-gnome];
configPackages = [cfg.package];
};
security.polkit.enable = true;
services.gnome.gnome-keyring.enable = true;
systemd.user.services.niri-flake-polkit = {
description = "PolicyKit Authentication Agent provided by niri-flake";
wantedBy = ["niri.service"];
after = ["graphical-session.target"];
partOf = ["graphical-session.target"];
serviceConfig = {
Type = "simple";
ExecStart = "${pkgs.libsForQt5.polkit-kde-agent}/libexec/polkit-kde-authentication-agent-1";
Restart = "on-failure";
RestartSec = 1;
TimeoutStopSec = 10;
};
};
security.pam.services.swaylock = {};
programs.dconf.enable = nixpkgs.lib.mkDefault true;
fonts.enableDefaultPackages = nixpkgs.lib.mkDefault true;
})
(nixpkgs.lib.optionalAttrs (options ? home-manager) {
home-manager.sharedModules =
[
self.homeModules.config
{programs.niri.package = nixpkgs.lib.mkForce cfg.package;}
]
++ nixpkgs.lib.optionals (options ? stylix) [self.homeModules.stylix];
})
];
};
homeModules.niri = {
config,
pkgs,
...
}: let
cfg = config.programs.niri;
in {
imports = [
self.homeModules.config
];
options.programs.niri = {
enable = nixpkgs.lib.mkEnableOption "niri";
};
config = nixpkgs.lib.mkIf cfg.enable {
home.packages = [cfg.package];
services.gnome-keyring.enable = true;
xdg.portal = {
enable = true;
extraPortals = nixpkgs.lib.mkIf (
!cfg.package.cargoBuildNoDefaultFeatures || builtins.elem "xdp-gnome-screencast" cfg.package.cargoBuildFeatures
) [pkgs.xdg-desktop-portal-gnome];
configPackages = [cfg.package];
};
};
};
};
};
}