[PATCH v5] installer: suppress boot console status noise

[colby@colbyt.com]

Add quiet to the installer's kernel parameters. Frame captures of the virtual console show it is the only addition needed: it raises the kernel console threshold above the KERN_INFO boot chatter, silences the stage-1 script, and holds systemd status output to errors only, so a normal boot paints nothing while errors still reach the screen.

Signed-off-by: Colby Thomson <colby@colbyt.com>
---
v5: standalone commit message and sign-off

systemd.show_status=false is unecessary. Quiet already implies errors-only status, and a new test boot (quiet alone, plymouth disabled) paints the same all-black frames as the old quiet+show_status=false control until the installer UI appears — so it bought nothing and would have hidden errors. The status text that motivated it was entirely the plymouth details-mode fallback, which overrides the setting anyway; agreed that waits for installing from Spectrum.

 release/installer/configuration.nix | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/release/installer/configuration.nix b/release/installer/configuration.nix
index 3f9ef247..b41c2d88 100644
--- a/release/installer/configuration.nix
+++ b/release/installer/configuration.nix
@@ -11,7 +11,9 @@ in
   imports = [ (modulesPath + "/profiles/all-hardware.nix") ];
 
   boot.consoleLogLevel = lib.mkDefault 2;
-  boot.kernelParams = [ "udev.log_priority=5" ];
+  # quiet keeps KERN_INFO boot chatter and the stage-1 script off the video
+  # console, and holds systemd status output to errors only.
+  boot.kernelParams = [ "udev.log_priority=5" "quiet" ];
   boot.initrd.verbose = false;
 
   boot.kernelPackages = pkgs.linuxPackages_latest;
--
2.55.0