Use the self attribute directly

flake.nix

@@ -33,20 +33,30 @@
         };
     };
 
-    outputs = {nixpkgs, ...} @ inputs: let
+    outputs = {
+        self,
+        nixpkgs,
+        ...
+    } @ inputs: let
         system = "x86_64-linux";
         pkgs = nixpkgs.legacyPackages.${system};
     in {
         nixosConfigurations = {
             north = nixpkgs.lib.nixosSystem {
-                specialArgs = {inherit inputs;};
+                specialArgs = {
+                    inherit self;
+                    inherit inputs;
+                };
                 modules = [
                     ./hosts/north
                     "${./.}/users/seb/@north.nix"
                 ];
             };
             inspiron = nixpkgs.lib.nixosSystem {
-                specialArgs = {inherit inputs;};
+                specialArgs = {
+                    inherit self;
+                    inherit inputs;
+                };
                 modules = [
                     ./hosts/inspiron
                     "${./.}/users/seb/@inspiron.nix"

modules/home/sops.nix

@@ -1,4 +1,5 @@
 {
+    self,
     inputs,
     config,
     lib,
@@ -11,7 +12,7 @@
     config = lib.mkIf config.myConfig.sops.enable {
         sops = {
             age.sshKeyPaths = ["${config.home.homeDirectory}/.ssh/id_ed25519"];
-            defaultSopsFile = "${inputs.self}/users/${config.home.username}/secrets.yaml";
+            defaultSopsFile = "${self}/users/${config.home.username}/secrets.yaml";
         };
     };
 }

modules/system/sops.nix

@@ -1,4 +1,5 @@
 {
+    self,
     inputs,
     config,
     lib,
@@ -11,7 +12,7 @@
     config = lib.mkIf config.myConfig.sops.enable {
         sops = {
             age.sshKeyPaths = ["/etc/ssh/ssh_host_ed25519_key"];
-            defaultSopsFile = "${inputs.self}/hosts/${config.networking.hostName}/secrets.yaml";
+            defaultSopsFile = "${self}/hosts/${config.networking.hostName}/secrets.yaml";
         };
     };
 }

users/common.nix

@@ -1,10 +1,17 @@
-{inputs, ...}: {
+{
+    self,
+    inputs,
+    ...
+}: {
     imports = [inputs.home-manager.nixosModules.home-manager];
 
     home-manager = {
         useGlobalPkgs = true;
         useUserPackages = true;
-        extraSpecialArgs = {inherit inputs;};
+        extraSpecialArgs = {
+            inherit self;
+            inherit inputs;
+        };
     };
 
     home-manager.sharedModules = [