diff --git a/pkgs/tools/nix/cached-nix-shell/default.nix b/pkgs/tools/nix/cached-nix-shell/default.nix
index 3df316ef9e35..0cbf0f6b106d 100644
--- a/pkgs/tools/nix/cached-nix-shell/default.nix
+++ b/pkgs/tools/nix/cached-nix-shell/default.nix
@@ -1,4 +1,4 @@
-{ lib, fetchFromGitHub, nix, openssl, pkg-config, ronn, rustPlatform }:
+{ lib, fetchFromGitHub, nix, ronn, rustPlatform }:
 
 let
   blake3-src = fetchFromGitHub {
diff --git a/pkgs/tools/nix/manix/default.nix b/pkgs/tools/nix/manix/default.nix
index 768a283ebd26..6975e61fa6cb 100644
--- a/pkgs/tools/nix/manix/default.nix
+++ b/pkgs/tools/nix/manix/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, rustPlatform, darwin, Security }:
+{ lib, stdenv, fetchFromGitHub, rustPlatform, Security }:
 
 rustPlatform.buildRustPackage rec {
   pname = "manix";
diff --git a/pkgs/tools/nix/nixdoc/default.nix b/pkgs/tools/nix/nixdoc/default.nix
index 785261a8e092..7fc47ef91a72 100644
--- a/pkgs/tools/nix/nixdoc/default.nix
+++ b/pkgs/tools/nix/nixdoc/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, fetchpatch, rustPlatform, darwin }:
+{ lib, stdenv, fetchFromGitHub, rustPlatform, darwin }:
 
 rustPlatform.buildRustPackage rec {
   pname = "nixdoc";
diff --git a/pkgs/tools/nix/nixos-install-tools/default.nix b/pkgs/tools/nix/nixos-install-tools/default.nix
index 8a00c15d905c..63f2da0df21c 100644
--- a/pkgs/tools/nix/nixos-install-tools/default.nix
+++ b/pkgs/tools/nix/nixos-install-tools/default.nix
@@ -63,7 +63,7 @@ in
       touch $out
     '';
   };
-}).overrideAttrs (o: {
+}).overrideAttrs {
   inherit version;
   pname = "nixos-install-tools";
-})
+}
diff --git a/pkgs/tools/nix/npins/default.nix b/pkgs/tools/nix/npins/default.nix
index 96f2f5548884..b9b589ebd22c 100644
--- a/pkgs/tools/nix/npins/default.nix
+++ b/pkgs/tools/nix/npins/default.nix
@@ -1,7 +1,5 @@
 { lib
 , rustPlatform
-, fetchFromGitHub
-, nix-gitignore
 , makeWrapper
 , stdenv
 , darwin