Don't force you to build sdImage

flake.nix

@@ -14,28 +14,33 @@
         makeImage = conf:
           (conf.extendModules {
             modules = [{ config.nixpkgs.buildPlatform.system = system; }];
-          }).config.system.build.sdImage;
+          }).config.system.build;
       in {
         formatter = pkgs.nixfmt;
         packages = lib.mapAttrs'
-          (name: value: lib.nameValuePair "${name}-sdimage" (makeImage value))
+          (name: value: lib.nameValuePair "${name}" (makeImage value))
           self.nixosConfigurations;
       })) // {
-        nixosModules.minify = { ... }: {
-          disabledModules = [ "profiles/base.nix" ];
+        nixosModules.minify = { config, ... }: {
+          disabledModules = [ "profiles/base.nix" "profiles/all-hardware.nix" ];
           config = {
             boot.bcache.enable = false;
             boot.initrd.includeDefaultModules = false;
-            environment.defaultPackages = [ ];
             fonts.fontconfig.enable = false;
             networking.firewall.enable = false;
-            nix.enable = false;
             programs.nano.enable = false;
             services.lvm.enable = false;
 
+            # Disable nix daemon, but sdImage uses nix-env so it's in the closure anyway
+            # Link it in for convenience
+            nix.enable = false;
+            environment.systemPackages = [ config.nix.package.out ];
+
+            # Disable a few default packages, like rsync, but not core stuff, like coreutils
             # We could theoretically disable system-path.nix so we don't have
             # requiredPackages, but that seems like a lot of work.
             # At that point I should just use buildroot...
+            environment.defaultPackages = [ ];
 
             # Leave networking.useDHCP = true since we would reenable it anyway
 
@@ -83,6 +88,9 @@
             self.nixosModules.rpiSht3x
             "${nixpkgs}/nixos/modules/installer/sd-card/sd-image-raspberrypi.nix"
             ({ pkgs, ... }: {
+              boot.initrd.availableKernelModules = [ "mmc_block" ];
+              sdImage.compressImage = false;
+
               nixpkgs.hostPlatform = lib.systems.examples.raspberryPi;
               nixpkgs.overlays = [
                 (final: prev: {