installer/iso-image: use system.build.image

and rename:
- isoImage.isoBaseName -> image.baseName
- isoImage.isoName -> image.fileName

nixos/modules/installer/cd-dvd/installation-cd-base.nix

@@ -15,9 +15,6 @@
   # Adds terminus_font for people with HiDPI displays
   console.packages = options.console.packages.default ++ [ pkgs.terminus_font ];
 
-  # ISO naming.
-  isoImage.isoName = "${config.isoImage.isoBaseName}-${config.system.nixos.label}-${pkgs.stdenv.hostPlatform.system}.iso";
-
   # EFI booting
   isoImage.makeEfiBootable = true;
 

nixos/modules/installer/cd-dvd/iso-image.nix

@@ -476,24 +476,34 @@ let
 in
 
 {
+  imports = [
+    (lib.mkRenamedOptionModuleWith {
+      sinceRelease = 2505;
+      from = [
+        "isoImage"
+        "isoBaseName"
+      ];
+      to = [
+        "image"
+        "baseName"
+      ];
+    })
+    (lib.mkRenamedOptionModuleWith {
+      sinceRelease = 2505;
+      from = [
+        "isoImage"
+        "isoName"
+      ];
+      to = [
+        "image"
+        "fileName"
+      ];
+    })
+    ../../image/file-options.nix
+  ];
+
   options = {
 
-    isoImage.isoName = lib.mkOption {
-      default = "${config.isoImage.isoBaseName}.iso";
-      type = lib.types.str;
-      description = ''
-        Name of the generated ISO image file.
-      '';
-    };
-
-    isoImage.isoBaseName = lib.mkOption {
-      default = config.system.nixos.distroId;
-      type = lib.types.str;
-      description = ''
-        Prefix of the name of the generated ISO image file.
-      '';
-    };
-
     isoImage.compressImage = lib.mkOption {
       default = false;
       type = lib.types.bool;
@@ -858,8 +868,12 @@ in
     boot.loader.timeout = 10;
 
     # Create the ISO image.
+    image.extension = if config.isoImage.compressImage then "iso.zst" else "iso";
+    image.filePath = "iso/${config.image.fileName}";
+    system.build.image = config.system.build.isoImage;
     system.build.isoImage = pkgs.callPackage ../../../lib/make-iso9660-image.nix ({
-      inherit (config.isoImage) isoName compressImage volumeID contents;
+      inherit (config.isoImage) compressImage volumeID contents;
+      isoName = "${config.image.baseName}.iso";
       bootable = config.isoImage.makeBiosBootable;
       bootImage = "/isolinux/isolinux.bin";
       syslinux = if config.isoImage.makeBiosBootable then pkgs.syslinux else null;

nixos/release.nix

@@ -62,7 +62,7 @@ let
     hydraJob ((import lib/eval-config.nix {
       inherit system;
       modules = makeModules module {
-        isoImage.isoBaseName = "nixos-${type}";
+        image.baseName = "nixos-${type}";
       };
     }).config.system.build.isoImage);
 

pkgs/desktops/gnome/installer.nix

@@ -7,7 +7,7 @@ let
 
   config = (import ../../../../nixos/lib/eval-config.nix {
     inherit system;
-    modules = [ module { isoImage.isoBaseName = isoBaseName; } ] ++ extraModules;
+    modules = [ module { image.baseName = isoBaseName; } ] ++ extraModules;
   }).config;
 
 in