nixos/iso-image: prepend to ISO menu labels

1 files changed, 18 insertions, 6 deletions

diff --git a/nixos/modules/installer/cd-dvd/iso-image.nix b/nixos/modules/installer/cd-dvd/iso-image.nix
index e22bb866927ba..86412ef5307fb 100644
--- a/nixos/modules/installer/cd-dvd/iso-image.nix
+++ b/nixos/modules/installer/cd-dvd/iso-image.nix
@@ -52,7 +52,7 @@ let
   buildMenuAdditionalParamsGrub2 = additional:
   let
     finalCfg = {
-      name = "${config.system.nixos.distroName} ${config.system.nixos.label}${config.isoImage.appendToMenuLabel}";
+      name = "${config.isoImage.prependToMenuLabel}${config.system.nixos.distroName} ${config.system.nixos.label}${config.isoImage.appendToMenuLabel}";
       params = "init=${config.system.build.toplevel}/init ${additional} ${toString config.boot.kernelParams}";
       image = "/boot/${config.system.boot.loader.kernelFile}";
       initrd = "/boot/initrd";
@@ -109,35 +109,35 @@ let
     DEFAULT boot
 
     LABEL boot
-    MENU LABEL ${config.system.nixos.distroName} ${config.system.nixos.label}${config.isoImage.appendToMenuLabel}
+    MENU LABEL ${config.isoImage.prependToMenuLabel}${config.system.nixos.distroName} ${config.system.nixos.label}${config.isoImage.appendToMenuLabel}
     LINUX /boot/${config.system.boot.loader.kernelFile}
     APPEND init=${config.system.build.toplevel}/init ${toString config.boot.kernelParams}
     INITRD /boot/${config.system.boot.loader.initrdFile}
 
     # A variant to boot with 'nomodeset'
     LABEL boot-nomodeset
-    MENU LABEL ${config.system.nixos.distroName} ${config.system.nixos.label}${config.isoImage.appendToMenuLabel} (nomodeset)
+    MENU LABEL ${config.isoImage.prependToMenuLabel}${config.system.nixos.distroName} ${config.system.nixos.label}${config.isoImage.appendToMenuLabel} (nomodeset)
     LINUX /boot/${config.system.boot.loader.kernelFile}
     APPEND init=${config.system.build.toplevel}/init ${toString config.boot.kernelParams} nomodeset
     INITRD /boot/${config.system.boot.loader.initrdFile}
 
     # A variant to boot with 'copytoram'
     LABEL boot-copytoram
-    MENU LABEL ${config.system.nixos.distroName} ${config.system.nixos.label}${config.isoImage.appendToMenuLabel} (copytoram)
+    MENU LABEL ${config.isoImage.prependToMenuLabel}${config.system.nixos.distroName} ${config.system.nixos.label}${config.isoImage.appendToMenuLabel} (copytoram)
     LINUX /boot/${config.system.boot.loader.kernelFile}
     APPEND init=${config.system.build.toplevel}/init ${toString config.boot.kernelParams} copytoram
     INITRD /boot/${config.system.boot.loader.initrdFile}
 
     # A variant to boot with verbose logging to the console
     LABEL boot-debug
-    MENU LABEL ${config.system.nixos.distroName} ${config.system.nixos.label}${config.isoImage.appendToMenuLabel} (debug)
+    MENU LABEL ${config.isoImage.prependToMenuLabel}${config.system.nixos.distroName} ${config.system.nixos.label}${config.isoImage.appendToMenuLabel} (debug)
     LINUX /boot/${config.system.boot.loader.kernelFile}
     APPEND init=${config.system.build.toplevel}/init ${toString config.boot.kernelParams} loglevel=7
     INITRD /boot/${config.system.boot.loader.initrdFile}
 
     # A variant to boot with a serial console enabled
     LABEL boot-serial
-    MENU LABEL ${config.system.nixos.distroName} ${config.system.nixos.label}${config.isoImage.appendToMenuLabel} (serial console=ttyS0,115200n8)
+    MENU LABEL ${config.isoImage.prependToMenuLabel}${config.system.nixos.distroName} ${config.system.nixos.label}${config.isoImage.appendToMenuLabel} (serial console=ttyS0,115200n8)
     LINUX /boot/${config.system.boot.loader.kernelFile}
     APPEND init=${config.system.build.toplevel}/init ${toString config.boot.kernelParams} console=ttyS0,115200n8
     INITRD /boot/${config.system.boot.loader.initrdFile}
@@ -616,6 +616,18 @@ in
       '';
     };
 
+    isoImage.prependToMenuLabel = mkOption {
+      default = "";
+      example = "Install ";
+      description = lib.mdDoc ''
+        The string to prepend before the menu label for the NixOS system.
+        This will be directly prepended (without whitespace) to the NixOS version
+        string, like for example if it is set to `XXX`:
+
+        `XXXNixOS 99.99-pre666`
+      '';
+    };
+
     isoImage.appendToMenuLabel = mkOption {
       default = " Installer";
       example = " Live System";