paperless-ngx: fix tests on machines with more than 256 cores (#439998)

2025-09-04 15:10:21 +02:00
parent 52c8b99170 ad5cdf4a35
commit cbf032a530
1 changed files with 4 additions and 0 deletions
@@ -315,6 +315,10 @@ python.pkgs.buildPythonApplication rec {
    export HOME=$(mktemp -d)
    export XDG_DATA_DIRS="${liberation_ttf}/share:$XDG_DATA_DIRS"
    export PAPERLESS_NLTK_DIR=${passthru.nltkDataDir}
+    # Limit threads per worker based on NIX_BUILD_CORES, capped at 256
+    # ocrmypdf has an internal limit of 256 jobs and will fail with more:
+    # https://github.com/ocrmypdf/OCRmyPDF/blob/66308c281306302fac3470f587814c3b212d0c40/src/ocrmypdf/cli.py#L234
+    export PAPERLESS_THREADS_PER_WORKER=$(( NIX_BUILD_CORES > 256 ? 256 : NIX_BUILD_CORES ))
  '';

  disabledTests = [