diff --git a/default.nix b/default.nix
index 2a8d007..f01ab85 100644
--- a/default.nix
+++ b/default.nix
@@ -4,14 +4,14 @@ let
   # https://github.com/andir/npins?tab=readme-ov-file#using-the-nixpkgs-fetchers
   src = import ./npins;
   pkgs = import src.nixpkgs { };
-  sources = mapAttrs (k: v: v { inherit pkgs; }) src;
+  sources = mapAttrs (_: v: v { inherit pkgs; }) src;
 
   inherit (pkgs) lib;
   inherit (lib.filesystem) listFilesRecursive;
   inherit (lib.strings) hasSuffix;
 
   mkSystem =
-    system: hostname:
+    hostname:
     import (src.nixpkgs + "/nixos/lib/eval-config.nix") {
       specialArgs = {
         inherit sources;
@@ -28,7 +28,7 @@ let
     };
 in
 {
-  temperance = mkSystem "x86_64-linux" "temperance";
-  hermit = mkSystem "x86_64-linux" "hermit";
-  tower = mkSystem "aarch64-linux" "tower";
+  temperance = mkSystem "temperance";
+  hermit = mkSystem "hermit";
+  tower = mkSystem "tower";
 }
diff --git a/modules/home/hjem.mod.nix b/modules/home/hjem.mod.nix
index a6c5e04..43838e6 100644
--- a/modules/home/hjem.mod.nix
+++ b/modules/home/hjem.mod.nix
@@ -27,7 +27,7 @@ in
         directory = config.users.users.${username}.home;
         clobberFiles = mkForce true;
       };
-      extraModules = ((listFilesRecursive ./.) |> filter (hasSuffix ".hjem.nix"));
+      extraModules = (listFilesRecursive ./.) |> filter (hasSuffix ".hjem.nix");
       specialArgs = {
         inherit sources;
       };
diff --git a/modules/programs/other/nix-index.mod.nix b/modules/programs/other/nix-index.mod.nix
index febcd44..86c94b1 100644
--- a/modules/programs/other/nix-index.mod.nix
+++ b/modules/programs/other/nix-index.mod.nix
@@ -1,4 +1,3 @@
-{ pkgs, ... }:
 {
   programs = {
     # We have to disable this and use nix-index instead. (Rust >>> Pearl)
diff --git a/modules/system/nix/nixpkgs.mod.nix b/modules/system/nix/nixpkgs.mod.nix
index 8092b9d..2955c48 100644
--- a/modules/system/nix/nixpkgs.mod.nix
+++ b/modules/system/nix/nixpkgs.mod.nix
@@ -20,43 +20,41 @@ in
     readOnly = true;
   };
 
-  config.nixpkgs.pkgs = (
-    import sources.nixpkgs {
-      hostPlatform = pkgs.stdenv.hostPlatform;
-      overlays = [ ];
-      config = {
-        # Configuration reference:
-        # <https://nixos.org/manual/nixpkgs/unstable/#chap-packageconfig>
-        # Disallow broken packages to be built.
-        allowBroken = false;
+  config.nixpkgs.pkgs = import sources.nixpkgs {
+    inherit (pkgs.stdenv) hostPlatform;
+    overlays = [ ];
+    config = {
+      # Configuration reference:
+      # <https://nixos.org/manual/nixpkgs/unstable/#chap-packageconfig>
+      # Disallow broken packages to be built.
+      allowBroken = false;
 
-        allowUnsupportedSystem = true;
+      allowUnsupportedSystem = true;
 
-        # Warn when config contains an unrecognized attribute.
-        # This might be useful for getting a better configuration.
-        warnUndeclaredOptions = true;
+      # Warn when config contains an unrecognized attribute.
+      # This might be useful for getting a better configuration.
+      warnUndeclaredOptions = true;
 
-        # Allow unfree packages
-        allowUnfree = true;
+      # Allow unfree packages
+      allowUnfree = true;
 
-        # Permitted insecure packages in a system.
-        # Default to none, add more as necessary.
-        # Matrix also likes using deprecated libraries, which tend to go into this list.
-        # permittedInsecurePackages = [];
+      # Permitted insecure packages in a system.
+      # Default to none, add more as necessary.
+      # Matrix also likes using deprecated libraries, which tend to go into this list.
+      # permittedInsecurePackages = [];
 
-        # Whether to set enableParallelBuilding to true by default while
-        # building nixpkgs packages. Changing the default causes a mass rebuild.
-        enableParallelBuildingByDefault = false;
+      # Whether to set enableParallelBuilding to true by default while
+      # building nixpkgs packages. Changing the default causes a mass rebuild.
+      enableParallelBuildingByDefault = false;
 
-        # Whether to expose old attribute names for compatibility.
-        # This improves backwards compatibility,
-        # which I could not care less about in my configuration.
-        allowAliases = false;
+      # Whether to expose old attribute names for compatibility.
+      # This improves backwards compatibility,
+      # which I could not care less about in my configuration.
+      allowAliases = false;
 
-        # List of derivation warnings to display while rebuilding.
-        #  See: <https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/check-meta.nix>
-        showDerivationWarnings = [ ];
-      };
-    }
-  );
+      # List of derivation warnings to display while rebuilding.
+      #  See: <https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/check-meta.nix>
+      showDerivationWarnings = [ ];
+    };
+  };
 }
diff --git a/templates/rust/flake.nix b/templates/rust/flake.nix
index c535237..2bc9461 100644
--- a/templates/rust/flake.nix
+++ b/templates/rust/flake.nix
@@ -20,7 +20,7 @@
         ralc = pkgsFor.${system}.callPackage ./nix/package.nix { };
       });
 
-      devShells = mapAttrs (system: pkgs: {
+      devShells = mapAttrs (_: pkgs: {
         default = pkgs.mkShell {
           packages = with pkgs; [
             cargo