awkawb/invoiceninja-nixos
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nixos-module: use playwright's chromium-headless-shell instead of pkgs.chromium for PDF generation

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snappdf only ever shells out to `$SNAPPDF_CHROMIUM_PATH --headless --print-to-pdf=...`,
so the full browser UI/GPU stack pkgs.chromium ships is unnecessary. Google's official
"Chrome for Testing" headless-only build (packaged by nixpkgs' playwright-driver,
selected via `browsers.override` with every other browser/ffmpeg disabled) does the
same job for a ~1.45GB smaller closure (431MB vs 1.88GB), needs no allowUnfree, and
PDF generation is noticeably faster in the VM test (~2.5s vs ~10s per request).

Drops the now-unnecessary allowUnfree wiring from the interactive VM and automated
test configs, which existed solely to build pkgs.chromium.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
This commit is contained in:
awkawb
2026-09-30 18:19:38 -04:00
co-authored by Claude Sonnet 5
parent b883e04303
commit bd112541e5
4 changed files with 34 additions and 24 deletions
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nixos-module/invoiceninja.nix
+16 -2
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@@ -47,8 +47,22 @@ let
extraConfig = "memory_limit = 1024M";
};
# Chromium is required for PDF invoice generation
chromium = pkgs.chromium;
# A headless browser is required for PDF invoice generation (PDF_GENERATOR=snappdf). snappdf
# just shells out to `$SNAPPDF_CHROMIUM_PATH --headless --print-to-pdf=... <url>`, so a full
# browser UI/GPU stack isn't needed -- Google's own "Chrome for Testing" headless-only build
# (as packaged by nixpkgs' playwright-driver) does the same job for a ~1.45GB smaller closure
# than pkgs.chromium, with no allowUnfree requirement.
chromiumHeadlessShellBrowsers = pkgs.playwright-driver.browsers.override {
withChromium = false;
withFirefox = false;
withWebkit = false;
withFfmpeg = false;
withChromiumHeadlessShell = true;
};
chromium = pkgs.runCommand "chromium-headless-shell" { } ''
mkdir -p $out/bin
ln -s ${chromiumHeadlessShellBrowsers}/chromium_headless_shell-*/chrome-headless-shell-linux64/chrome-headless-shell $out/bin/chromium
'';
extraPrograms = [ chromium ];
# Management script