Remove all uses of lib.flatten

flake/hosts.nix

@@ -15,11 +15,11 @@ let
             |> lib.filesystem.listFilesRecursive
             |> builtins.filter (lib.hasSuffix ".nix");
         in
-        lib.flatten [
+        [
           { networking = { inherit hostName; }; }
           "${self}/hosts/shared.nix"
-          hostFiles
-        ];
+        ]
+        ++ hostFiles;
     };
   };
 

modules/system/services/crowdsec/default.nix

@@ -90,12 +90,12 @@ in
         '';
       in
       [
-        "crowdsecurity/linux"
+        (lib.singleton "crowdsecurity/linux")
         (lib.optional (lib.elem "sshd" cfg.sources) "crowdsecurity/sshd")
         (lib.optional (lib.elem "caddy" cfg.sources) "crowdsecurity/caddy")
         (lib.optional (lib.elem "iptables" cfg.sources) "crowdsecurity/iptables")
       ]
-      |> lib.flatten
+      |> lib.concatLists
       |> lib.map installCollection
       |> lib.concatLines
       |> (text: pkgs.writeShellScript "crowdsec-install-collections" "set -e\n${text}")

modules/system/services/gatus.nix

@@ -101,7 +101,7 @@ in
                   username = "";
                   password = "";
                 };
-                conditions = lib.flatten [
+                conditions = lib.concatLists [
                   extraConditions
                   (lib.optional (lib.hasPrefix "http" url) "[STATUS] == 200")
                   (lib.optional (lib.hasPrefix "tcp" url) "[CONNECTED] == true")

modules/system/wifi.nix

@@ -16,10 +16,7 @@ in
 {
   options.custom.wifi.enable = lib.mkEnableOption "";
 
-  config = lib.mkIf config.custom.wifi.enable (
-    lib.mkMerge (
-      lib.flatten [
-        {
+  config = lib.mkIf config.custom.wifi.enable {
     networking.wireless.iwd = {
       enable = true;
       settings = {
@@ -30,19 +27,17 @@ in
     };
 
     environment.systemPackages = [ pkgs.iwgtk ];
-        }
 
-        (
+    sops.secrets =
       networks
       |> lib.map (name: {
-            sops.secrets."iwd/${name}" = { };
-
-            systemd.tmpfiles.rules = [
-              "C /var/lib/iwd/${name} - - - - ${config.sops.secrets."iwd/${name}".path}"
-            ];
+        name = "iwd/${name}";
+        value = { };
       })
-        )
-      ]
-    )
-  );
+      |> lib.listToAttrs;
+
+    systemd.tmpfiles.rules =
+      networks
+      |> lib.map (name: "C /var/lib/iwd/${name} - - - - ${config.sops.secrets."iwd/${name}".path}");
+  };
 }