Some convenience options for ISO images

flake.nix

@@ -97,9 +97,11 @@
       };
     };
 
-    ## Fully-feature ISO installer
-    mkInstaller = import ./installer.nix;
-    installers = lib.mapAttrs (_: config: self.mkInstaller nixpkgs config) self.nixosConfigurations;
+    installers =
+      let
+        installer = (import ./installer.nix) nixpkgs;
+      in
+      lib.mapAttrs (_: config: installer config) self.nixosConfigurations;
 
     deploy =
       let

installer.nix

@@ -28,10 +28,8 @@ nixpkgs: machine:
 
         isoImage = {
           compressImage = false;
-          squashfsCompression = "lz4";
+          squashfsCompression = "gzip -Xcompression-level 1";
           isoName = lib.mkForce "installer.iso";
-          ## ^^ FIXME: Use a more interesting name or keep the default name and
-          ## use `isoImage.isoName` in the tests.
         };
       };
   in

tests/mastodon-garage.nix

@@ -37,12 +37,7 @@ pkgs.nixosTest {
   nodes = {
     server = { config, ... }: {
       virtualisation.memorySize = lib.mkVMOverride 4096;
-      imports = with self.nixosModules; [
-        bleedingFediverse
-        fediversity
-        garage-vm
-        mastodon-vm
-      ];
+      imports = with self.nixosModules; [ bleedingFediverse garage-vm mastodon-vm ];
       # TODO: pair down
       environment.systemPackages = with pkgs; [
         python3

tests/pixelfed-garage.nix

@@ -136,12 +136,7 @@ pkgs.nixosTest {
         memorySize = lib.mkVMOverride 8192;
         cores = 8;
       };
-      imports = with self.nixosModules; [
-        bleedingFediverse
-        fediversity
-        garage-vm
-        pixelfed-vm
-      ];
+      imports = with self.nixosModules; [ bleedingFediverse garage-vm pixelfed-vm ];
       # TODO: pair down
       environment.systemPackages = with pkgs; [
         python3