mirror of
https://github.com/nix-community/home-manager
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296 lines
10 KiB
Nix
296 lines
10 KiB
Nix
{ config, lib, pkgs, ... }:
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let
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cfg = config.nixGL;
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wrapperListMarkdown = with builtins;
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foldl' (list: name:
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list + ''
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- ${name}
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'') "" (attrNames config.lib.nixGL.wrappers);
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in {
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meta.maintainers = [ lib.maintainers.smona ];
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options.nixGL = {
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packages = lib.mkOption {
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type = with lib.types; nullOr attrs;
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default = null;
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example = lib.literalExpression "inputs.nixGL.packages";
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description = ''
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The nixGL package set containing GPU library wrappers. This can be used
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to provide OpenGL and Vulkan access to applications on non-NixOS systems
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by using `(config.lib.nixGL.wrap <package>)` for the default wrapper, or
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`(config.lib.nixGL.wrappers.<wrapper> <package>)` for any available
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wrapper.
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The wrapper functions are always available. If this option is empty (the
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default), they are a no-op. This is useful on NixOS where the wrappers
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are unnecessary.
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Note that using any Nvidia wrapper requires building the configuration
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with the `--impure` option.
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'';
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};
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defaultWrapper = lib.mkOption {
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type = lib.types.enum (builtins.attrNames config.lib.nixGL.wrappers);
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default = "mesa";
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description = ''
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The package wrapper function available for use as `(config.lib.nixGL.wrap
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<package>)`. Intended to start programs on the main GPU.
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Wrapper functions can be found under `config.lib.nixGL.wrappers`. They
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can be used directly, however, setting this option provides a convenient
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shorthand.
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The following wrappers are available:
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${wrapperListMarkdown}
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'';
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};
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offloadWrapper = lib.mkOption {
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type = lib.types.enum (builtins.attrNames config.lib.nixGL.wrappers);
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default = "mesaPrime";
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description = ''
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The package wrapper function available for use as
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`(config.lib.nixGL.wrapOffload <package>)`. Intended to start programs
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on the secondary GPU.
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Wrapper functions can be found under `config.lib.nixGL.wrappers`. They
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can be used directly, however, setting this option provides a convenient
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shorthand.
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The following wrappers are available:
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${wrapperListMarkdown}
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'';
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};
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prime.card = lib.mkOption {
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type = lib.types.str;
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default = "1";
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example = "pci-0000_06_00_0";
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description = ''
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Selects the non-default graphics card used for PRIME render offloading.
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The value can be:
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- a number, selecting the n-th non-default GPU;
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- a PCI bus id in the form `pci-XXX_YY_ZZ_U`;
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- a PCI id in the form `vendor_id:device_id`
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For more information, consult the Mesa documentation on the `DRI_PRIME`
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environment variable.
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'';
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};
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prime.nvidiaProvider = lib.mkOption {
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type = with lib.types; nullOr str;
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default = null;
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example = "NVIDIA-G0";
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description = ''
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If this option is set, it overrides the offload provider for Nvidia
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PRIME offloading. Consult the proprietary Nvidia driver documentation
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on the `__NV_PRIME_RENDER_OFFLOAD_PROVIDER` environment variable.
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'';
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};
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prime.installScript = lib.mkOption {
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type = with lib.types; nullOr (enum [ "mesa" "nvidia" ]);
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default = null;
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example = "mesa";
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description = ''
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If this option is set, the wrapper script `prime-offload` is installed
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into the environment. It allows starting programs on the secondary GPU
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selected by the `nixGL.prime.card` option. This makes sense when the
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program is not already using one of nixGL PRIME wrappers, or for
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programs not installed from Nixpkgs.
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This option can be set to either "mesa" or "nvidia", making the script
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use one or the other graphics library.
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'';
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};
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installScripts = lib.mkOption {
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type = with lib.types;
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nullOr (listOf (enum (builtins.attrNames config.lib.nixGL.wrappers)));
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default = null;
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example = [ "mesa" "mesaPrime" ];
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description = ''
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For each wrapper `wrp` named in the provided list, a wrapper script
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named `nixGLWrp` is installed into the environment. These scripts are
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useful for running programs not installed via Home Manager.
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The following wrappers are available:
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${wrapperListMarkdown}
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'';
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};
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vulkan.enable = lib.mkOption {
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type = lib.types.bool;
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default = false;
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example = true;
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description = ''
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Whether to enable Vulkan in nixGL wrappers.
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This is disabled by default bacause Vulkan brings in several libraries
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that can cause symbol version conflicts in wrapped programs. Your
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mileage may vary.
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'';
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};
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};
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config = let
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findWrapperPackage = packageAttr:
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# NixGL has wrapper packages in different places depending on how you
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# access it. We want HM configuration to be the same, regardless of how
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# NixGL is imported.
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#
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# First, let's see if we have a flake.
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if builtins.hasAttr pkgs.system cfg.packages then
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cfg.packages.${pkgs.system}.${packageAttr}
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else
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# Next, let's see if we have a channel.
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if builtins.hasAttr packageAttr cfg.packages then
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cfg.packages.${packageAttr}
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else
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# Lastly, with channels, some wrappers are grouped under "auto".
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if builtins.hasAttr "auto" cfg.packages then
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cfg.packages.auto.${packageAttr}
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else
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throw "Incompatible NixGL package layout";
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getWrapperExe = vendor:
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let
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glPackage = findWrapperPackage "nixGL${vendor}";
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glExe = lib.getExe glPackage;
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vulkanPackage = findWrapperPackage "nixVulkan${vendor}";
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vulkanExe = if cfg.vulkan.enable then lib.getExe vulkanPackage else "";
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in "${glExe} ${vulkanExe}";
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mesaOffloadEnv = { "DRI_PRIME" = "${cfg.prime.card}"; };
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nvOffloadEnv = {
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"DRI_PRIME" = "${cfg.prime.card}";
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"__NV_PRIME_RENDER_OFFLOAD" = "1";
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"__GLX_VENDOR_LIBRARY_NAME" = "nvidia";
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"__VK_LAYER_NV_optimus" = "NVIDIA_only";
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} // (let provider = cfg.prime.nvidiaProvider;
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in if !isNull provider then {
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"__NV_PRIME_RENDER_OFFLOAD_PROVIDER" = "${provider}";
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} else
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{ });
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makePackageWrapper = vendor: environment: pkg:
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if builtins.isNull cfg.packages then
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pkg
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else
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# Wrap the package's binaries with nixGL, while preserving the rest of
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# the outputs and derivation attributes.
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(pkg.overrideAttrs (old: {
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name = "nixGL-${pkg.name}";
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# Make sure this is false for the wrapper derivation, so nix doesn't expect
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# a new debug output to be produced. We won't be producing any debug info
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# for the original package.
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separateDebugInfo = false;
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nativeBuildInputs = old.nativeBuildInputs or [ ]
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++ [ pkgs.makeWrapper ];
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buildCommand = let
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# We need an intermediate wrapper package because makeWrapper
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# requires a single executable as the wrapper.
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combinedWrapperPkg =
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pkgs.writeShellScriptBin "nixGLCombinedWrapper-${vendor}" ''
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exec ${getWrapperExe vendor} "$@"
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'';
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in ''
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set -eo pipefail
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${ # Heavily inspired by https://stackoverflow.com/a/68523368/6259505
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lib.concatStringsSep "\n" (map (outputName: ''
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echo "Copying output ${outputName}"
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set -x
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cp -rs --no-preserve=mode "${
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pkg.${outputName}
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}" "''$${outputName}"
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set +x
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'') (old.outputs or [ "out" ]))}
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rm -rf $out/bin/*
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shopt -s nullglob # Prevent loop from running if no files
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for file in ${pkg.out}/bin/*; do
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local prog="$(basename "$file")"
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makeWrapper \
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"${lib.getExe combinedWrapperPkg}" \
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"$out/bin/$prog" \
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--argv0 "$prog" \
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--add-flags "$file" \
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${
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lib.concatStringsSep " " (lib.attrsets.mapAttrsToList
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(var: val: "--set '${var}' '${val}'") environment)
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}
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done
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# If .desktop files refer to the old package, replace the references
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for dsk in "$out/share/applications"/*.desktop ; do
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if ! grep -q "${pkg.out}" "$dsk"; then
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continue
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fi
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src="$(readlink "$dsk")"
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rm "$dsk"
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sed "s|${pkg.out}|$out|g" "$src" > "$dsk"
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done
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shopt -u nullglob # Revert nullglob back to its normal default state
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'';
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}));
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wrappers = {
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mesa = makePackageWrapper "Intel" { };
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mesaPrime = makePackageWrapper "Intel" mesaOffloadEnv;
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nvidia = makePackageWrapper "Nvidia" { };
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nvidiaPrime = makePackageWrapper "Nvidia" nvOffloadEnv;
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};
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in {
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lib.nixGL.wrap = wrappers.${cfg.defaultWrapper};
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lib.nixGL.wrapOffload = wrappers.${cfg.offloadWrapper};
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lib.nixGL.wrappers = wrappers;
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home.packages = let
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wantsPrimeWrapper = (!isNull cfg.prime.installScript);
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wantsWrapper = wrapper:
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(!isNull cfg.packages) && (!isNull cfg.installScripts)
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&& (builtins.elem wrapper cfg.installScripts);
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envVarsAsScript = environment:
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lib.concatStringsSep "\n"
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(lib.attrsets.mapAttrsToList (var: val: "export ${var}=${val}")
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environment);
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in [
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(lib.mkIf wantsPrimeWrapper (pkgs.writeShellScriptBin "prime-offload" ''
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${if cfg.prime.installScript == "mesa" then
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(envVarsAsScript mesaOffloadEnv)
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else
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(envVarsAsScript nvOffloadEnv)}
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exec "$@"
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''))
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(lib.mkIf (wantsWrapper "mesa") (pkgs.writeShellScriptBin "nixGLMesa" ''
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exec ${getWrapperExe "Intel"} "$@"
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''))
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(lib.mkIf (wantsWrapper "mesaPrime")
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(pkgs.writeShellScriptBin "nixGLMesaPrime" ''
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${envVarsAsScript mesaOffloadEnv}
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exec ${getWrapperExe "Intel"} "$@"
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''))
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(lib.mkIf (wantsWrapper "nvidia")
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(pkgs.writeShellScriptBin "nixGLNvidia" ''
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exec ${getWrapperExe "Nvidia"} "$@"
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''))
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(lib.mkIf (wantsWrapper "nvidia")
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(pkgs.writeShellScriptBin "nixGLNvidiaPrime" ''
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${envVarsAsScript nvOffloadEnv}
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exec ${getWrapperExe "Nvidia"} "$@"
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''))
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];
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};
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}
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