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fix(nix): configure VA-API driver paths for hardware acceleration #1367

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Merged
EtienneLescot merged 1 commit into from
Oct 23, 2026
Merged

fix(nix): configure VA-API driver paths for hardware acceleration #1367

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15 changes: 15 additions & 0 deletions flake.nix
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Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,10 @@
inherit compositor-view pipewire-helper whisper-stt;
openscreen = pkgs.callPackage ./nix/package.nix {
inherit compositor-view pipewire-helper whisper-stt;
intel-media-driver =
if pkgs.stdenv.hostPlatform.isx86_64 then pkgs.intel-media-driver else null;
intel-vaapi-driver =
if pkgs.stdenv.hostPlatform.isx86_64 then pkgs.intel-vaapi-driver else null;
};
default = self.packages.${pkgs.stdenv.hostPlatform.system}.openscreen;
}
Expand Down Expand Up @@ -132,6 +136,17 @@
ELECTRON_SKIP_BINARY_DOWNLOAD = "1";
ELECTRON_OVERRIDE_DIST_PATH = "${electron}/bin";

# VA-API driver paths for hardware video acceleration (Intel, AMD, NVIDIA)
LIBVA_DRIVERS_PATH = "/run/opengl-driver/lib/dri:${
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pkgs.lib.makeSearchPath "lib/dri" (
[ pkgs.mesa ]
++ pkgs.lib.optionals pkgs.stdenv.hostPlatform.isx86_64 [
pkgs.intel-media-driver
pkgs.intel-vaapi-driver
]
)
}:/usr/lib/dri:/usr/lib64/dri:/usr/lib/x86_64-linux-gnu/dri";

# Playwright browser path for test:browser / test:e2e
PLAYWRIGHT_BROWSERS_PATH = "${pkgs.playwright-driver.browsers}";
PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD = "1";
Expand Down
19 changes: 19 additions & 0 deletions nix/package.nix
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Original file line number Diff line number Diff line change
@@ -1,12 +1,16 @@
{
lib,
stdenv,
buildNpmPackage,
nodejs_22,
electron,
ffmpeg-headless,
compositor-view,
pipewire-helper,
whisper-stt,
mesa,
intel-media-driver ? null,
intel-vaapi-driver ? null,
makeWrapper,
makeDesktopItem,
copyDesktopItems,
Expand All @@ -21,6 +25,20 @@ let
# fault, not a packaging shortcut"; the same standard applies here. The only
# invocation is a decode to raw PCM, so dropping GPL costs nothing.
ffmpegLgpl = ffmpeg-headless.override { withGPL = false; };

# VA-API driver search path for hardware video acceleration (Intel, AMD, NVIDIA).
# Nix provides drivers in isolated store paths, while NixOS provides them at
# /run/opengl-driver/lib/dri and non-NixOS distributions provide them in /usr/lib/dri.
# Bundling mesa and Intel drivers (on x86) guarantees VA-API works out-of-the-box.
vaDriversPath = lib.makeSearchPath "lib/dri" (
[ mesa ]
++ lib.optionals stdenv.hostPlatform.isx86_64 (
lib.filter (d: d != null) [
intel-media-driver
intel-vaapi-driver
]
)
);
in
buildNpmPackage {
nodejs = nodejs_22;
Expand Down Expand Up @@ -119,6 +137,7 @@ buildNpmPackage {
makeWrapper "${electron}/bin/electron" "$out/bin/openscreen" \
--add-flags "$out/lib/openscreen" \
--set ELECTRON_IS_DEV 0 \
--suffix LIBVA_DRIVERS_PATH : "/run/opengl-driver/lib/dri:${vaDriversPath}:/usr/lib/dri:/usr/lib64/dri:/usr/lib/x86_64-linux-gnu/dri" \
--set OPENSCREEN_FFMPEG_PATH "${ffmpegLgpl}/bin/ffmpeg" \
--set OPENSCREEN_COMPOSITOR_VIEW_NODE "${compositor-view}/lib/compositor_view.node" \
--set OPENSCREEN_LINUX_CURSOR_HELPER_EXE "${lib.getExe pipewire-helper}" \
Expand Down
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