3 files changed, 14 insertions, 1 deletions

diff --git a/installer-profiles/cd-dvd.nix b/installer-profiles/cd-dvd.nix
index 45291bad..ac12d885 100644
--- a/installer-profiles/cd-dvd.nix
+++ b/installer-profiles/cd-dvd.nix
@@ -1,7 +1,13 @@
-{ flakeInputs, ... }:
+{ flakeInputs, lib, ... }:
 
 {
   imports = [
     "${flakeInputs.nixpkgs.outPath}/nixos/modules/installer/cd-dvd/installation-cd-minimal.nix"
   ];
+
+  config = {
+    isoImage.squashfsCompression = "zstd -Xcompression-level 9";
+    system.installer.channel.enable = false;
+    boot.loader.grub.memtest86.enable = lib.mkForce false;
+  };
 }
diff --git a/installer-profiles/netboot.nix b/installer-profiles/netboot.nix
index 28e8084d..6e39ebfb 100644
--- a/installer-profiles/netboot.nix
+++ b/installer-profiles/netboot.nix
@@ -4,4 +4,9 @@
   imports = [
     "${flakeInputs.nixpkgs.outPath}/nixos/modules/installer/netboot/netboot-minimal.nix"
   ];
+
+  config = {
+    netboot.squashfsCompression = "zstd -Xcompression-level 9";
+    system.installer.channel.enable = false;
+  };
 }
diff --git a/installer-profiles/nfsroot.nix b/installer-profiles/nfsroot.nix
index 6bd875b4..a8f6def6 100644
--- a/installer-profiles/nfsroot.nix
+++ b/installer-profiles/nfsroot.nix
@@ -8,4 +8,6 @@
     "${flakeInputs.nixpkgs.outPath}/nixos/modules/profiles/base.nix"
     "${flakeInputs.nixpkgs.outPath}/nixos/modules/profiles/installation-device.nix"
   ];
+
+  config.system.installer.channel.enable = false;
 }