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chore(gaming): inline the nix-gaming tunables and drop the input (#511)
Assisted-by: Claude Code (claude-opus-5-5)
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ryan4yin | 二花 authored and 
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@@ -221,22 +221,6 @@
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}
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},
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"flake-compat_3": {
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"flake": false,
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"locked": {
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"lastModified": 1767039857,
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"narHash": "sha256-vNpUSpF5Nuw8xvDLj2KCwwksIbjua2LZCqhV1LNRDns=",
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"owner": "NixOS",
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"repo": "flake-compat",
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"rev": "5edf11c44bc78a0d334f6334cdaf7d60d732daab",
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"type": "github"
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},
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"original": {
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"owner": "NixOS",
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"repo": "flake-compat",
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"type": "github"
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}
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},
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"flake-compat_4": {
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"locked": {
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"lastModified": 1761640442,
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"narHash": "sha256-AtrEP6Jmdvrqiv4x2xa5mrtaIp3OEe8uBYCDZDS+hu8=",
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@@ -251,7 +235,7 @@
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"type": "github"
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}
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},
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"flake-compat_5": {
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"flake-compat_4": {
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"flake": false,
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"locked": {
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"lastModified": 1767039857,
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@@ -289,24 +273,6 @@
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}
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},
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"flake-parts_2": {
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"inputs": {
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"nixpkgs-lib": "nixpkgs-lib"
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},
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"locked": {
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"lastModified": 1790898470,
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"narHash": "sha256-zTwuwezD0w3hpga6a6P8emidzAZFyWqlNeRBlpWOOl8=",
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"owner": "hercules-ci",
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"repo": "flake-parts",
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"rev": "024633cd702b10285db5cb19b40ad48d2399ba60",
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"type": "github"
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},
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"original": {
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"owner": "hercules-ci",
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"repo": "flake-parts",
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"type": "github"
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}
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},
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"flake-parts_3": {
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"inputs": {
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"nixpkgs-lib": [
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"nixpak",
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@@ -345,31 +311,6 @@
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"type": "github"
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}
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},
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"git-hooks": {
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"inputs": {
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"flake-compat": [
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"nix-gaming",
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"flake-compat"
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],
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"nixpkgs": [
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"nix-gaming",
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"nixpkgs"
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]
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},
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"locked": {
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"lastModified": 1791909798,
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"narHash": "sha256-VAhpCOmrun/KXimYfR8NM88bciKCui7CqHHhThSzgag=",
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"owner": "cachix",
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"repo": "git-hooks.nix",
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"rev": "1ba1dbfe28738c9a71c266be6efa5b89e75491a9",
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"type": "github"
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},
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"original": {
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"owner": "cachix",
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"repo": "git-hooks.nix",
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"type": "github"
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}
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},
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"haumea": {
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"inputs": {
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"nixpkgs": [
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@@ -607,29 +548,6 @@
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"type": "github"
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}
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},
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"nix-gaming": {
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"inputs": {
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"flake-compat": "flake-compat_3",
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"flake-parts": "flake-parts_2",
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"git-hooks": "git-hooks",
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"nixpkgs": [
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"nixpkgs"
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]
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},
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"locked": {
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"lastModified": 1793250639,
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"narHash": "sha256-5ZT7ZVSqM0OFq7D7LtETkrV3TNQ6NoFsptFOI0OFK+Q=",
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"owner": "fufexan",
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"repo": "nix-gaming",
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"rev": "46024210a12bf7203036f6e4d4d9318f96f488e7",
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"type": "github"
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},
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"original": {
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"owner": "fufexan",
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"repo": "nix-gaming",
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"type": "github"
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}
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},
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"nix-github-actions": {
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"inputs": {
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"nixpkgs": [
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@@ -674,7 +592,7 @@
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},
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"nixos-apple-silicon": {
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"inputs": {
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"flake-compat": "flake-compat_4",
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"flake-compat": "flake-compat_3",
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"nixpkgs": [
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"nixpkgs"
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]
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@@ -695,7 +613,7 @@
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},
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"nixpak": {
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"inputs": {
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"flake-parts": "flake-parts_3",
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"flake-parts": "flake-parts_2",
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"hercules-ci-effects": "hercules-ci-effects",
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"nixpkgs": [
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"nixpkgs"
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@@ -763,21 +681,6 @@
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"type": "github"
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}
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},
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"nixpkgs-lib": {
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"locked": {
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"lastModified": 1790477367,
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"narHash": "sha256-oujbxmVKDhci2E4EM3KyAbRUgp5/IsCoiA/LfEF7OOk=",
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"owner": "nix-community",
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"repo": "nixpkgs.lib",
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"rev": "f7cd230690d9fc982d06129f9189b101fddcfa3b",
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"type": "github"
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},
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"original": {
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"owner": "nix-community",
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"repo": "nixpkgs.lib",
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"type": "github"
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}
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},
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"nixpkgs-master": {
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"locked": {
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"lastModified": 1793545910,
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@@ -956,7 +859,7 @@
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},
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"pre-commit-hooks": {
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"inputs": {
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"flake-compat": "flake-compat_5",
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"flake-compat": "flake-compat_4",
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"nixpkgs": [
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"nixpkgs"
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]
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@@ -1009,7 +912,6 @@
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"my-asahi-firmware": "my-asahi-firmware",
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"mysecrets": "mysecrets",
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"nix-darwin": "nix-darwin",
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"nix-gaming": "nix-gaming",
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"nix-x86-on-aarch64": "nix-x86-on-aarch64",
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"nixos-apple-silicon": "nixos-apple-silicon",
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"nixpak": "nixpak",
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@@ -137,11 +137,6 @@
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# -------------- Gaming ---------------------
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nix-gaming = {
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url = "github:fufexan/nix-gaming";
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inputs.nixpkgs.follows = "nixpkgs";
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};
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# x86/x86_64 emulation on 16K-page ARM64 (Apple Silicon). FEX cannot run
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# natively with 16K pages, so this wraps FEX in a 4K-page muvm microVM and
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# exposes an `x86pkgs` set plus Steam/Wine launchers. Used by shoukei; see
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@@ -1,6 +1,5 @@
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{
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pkgs,
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nix-gaming,
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config,
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lib,
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...
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@@ -10,11 +9,6 @@ let
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cfg = config.modules.desktop.gaming;
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in
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{
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imports = [
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nix-gaming.nixosModules.pipewireLowLatency
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nix-gaming.nixosModules.platformOptimizations
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];
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options.modules.desktop = {
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gaming = {
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enable = mkEnableOption "desktop gaming support";
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@@ -75,9 +69,52 @@ in
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capSysNice = true;
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};
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# see https://github.com/fufexan/nix-gaming/#pipewire-low-latency
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services.pipewire.lowLatency.enable = true;
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programs.steam.platformOptimizations.enable = true;
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# The sysctls SteamOS ships in steamos-customizations-jupiter (file names
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# below), as carried by nix-gaming's platformOptimizations module.
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boot.kernel.sysctl = {
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# 20-shed.conf
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"kernel.sched_cfs_bandwidth_slice_us" = 3000;
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# 20-net-timeout.conf: lets a game that was killed and restarted quickly
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# rebind its TCP ports.
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"net.ipv4.tcp_fin_timeout" = 5;
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# 30-splitlock.conf: no deliberate slowdown when a game hits a split lock.
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"kernel.split_lock_mitigate" = 0;
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# 30-vm.conf: MAX_INT - MAPCOUNT_ELF_CORE_MARGIN, see include/linux/mm.h.
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"vm.max_map_count" = 2147483642;
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};
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# Low-latency PipeWire: a 64/48000 minimum quantum plus realtime scheduling,
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# as in nix-gaming's pipewireLowLatency module.
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services.pipewire.extraConfig = {
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pipewire."99-lowlatency" = {
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"context.properties"."default.clock.min-quantum" = 64;
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"context.modules" = [
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{
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name = "libpipewire-module-rt";
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flags = [
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"ifexists"
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"nofail"
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];
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args = {
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"nice.level" = -15;
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"rt.prio" = 88;
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"rt.time.soft" = 200000;
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"rt.time.hard" = 200000;
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};
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}
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];
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};
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pipewire-pulse."99-lowlatency"."pulse.properties" = {
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"server.address" = [ "unix:native" ];
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"pulse.min.req" = "64/48000";
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"pulse.min.quantum" = "64/48000";
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"pulse.min.frag" = "64/48000";
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};
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client."99-lowlatency"."stream.properties" = {
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"node.latency" = "64/48000";
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"resample.quality" = 1;
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};
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};
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# Optimise Linux system performance on demand
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# https://github.com/FeralInteractive/GameMode
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