Using Xvfb in checkPhase

matthewbauer · November 24, 2018, 7:48pm

I would look at a few places where this is already done in Nixpkgs:

NixOS/nixpkgs/blob/92a047a6c4d46a222e9c323ea85882d0a7a13af8/pkgs/applications/networking/instant-messengers/gajim/default.nix#L52-L56


      
          checkPhase = ''
            xvfb-run dbus-run-session \
              --config-file=${dbus.daemon}/share/dbus-1/session.conf \
              ${python.interpreter} test/runtests.py
          '';

github.com

NixOS/nixpkgs/blob/99d7805a6f0fe8920af412e750e249256a5d68ce/pkgs/applications/office/kmymoney/default.nix#L63-L70


      
          doInstallCheck = stdenv.hostPlatform == stdenv.buildPlatform;
          installCheckPhase = let
            pluginPath = "${qtbase.bin}/${qtbase.qtPluginPrefix}";
          in lib.optionalString doInstallCheck ''
            QT_PLUGIN_PATH=${lib.escapeShellArg pluginPath} CTEST_OUTPUT_ON_FAILURE=1 \
              ${xvfb_run}/bin/xvfb-run -s '-screen 0 1024x768x24' make test \
              ARGS="-E '(reports-chart-test)'" # Test fails, so exclude it for now.
          '';

It should work fine if you have the right dependencies. @jtojnar was just mentioning this kind of thing:

https://github.com/NixOS/nixpkgs/pull/50527#issuecomment-439777887