diff --git a/pkgs/clboss/default.nix b/pkgs/clboss/default.nix
index f7f5725..cb3eb97 100644
--- a/pkgs/clboss/default.nix
+++ b/pkgs/clboss/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, pkgconfig, curl, libev, sqlite }:
+{ lib, stdenv, fetchurl, pkgconfig, curl, libev, sqlite }:
 
 let
   curlWithGnuTLS = curl.override { gnutlsSupport = true; sslSupport = false; };
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "Automated C-Lightning Node Manager";
     homepage = "https://github.com/ZmnSCPxj/clboss";
     maintainers = with maintainers; [ nixbitcoin ];
diff --git a/pkgs/elementsd/default.nix b/pkgs/elementsd/default.nix
index a46a1a3..1699b1e 100644
--- a/pkgs/elementsd/default.nix
+++ b/pkgs/elementsd/default.nix
@@ -1,8 +1,8 @@
-{ stdenv, fetchurl, pkgconfig, autoreconfHook, openssl, db48, boost, zeromq, rapidcheck
+{ lib, stdenv, fetchurl, pkgconfig, autoreconfHook, openssl, db48, boost, zeromq, rapidcheck
 , zlib, miniupnpc, qtbase ? null, qttools ? null, wrapQtAppsHook ? null, utillinux, protobuf, python3, qrencode, libevent
 , withGui }:
 
-with stdenv.lib;
+with lib;
 stdenv.mkDerivation rec {
   pname = "elements${optionalString (!withGui) "d"}";
   version = "0.18.1.9";
diff --git a/pkgs/hwi/default.nix b/pkgs/hwi/default.nix
index 86d074c..2ab6ce0 100644
--- a/pkgs/hwi/default.nix
+++ b/pkgs/hwi/default.nix
@@ -1,6 +1,4 @@
-{ pkgs, stdenv, fetchurl, fetchFromGitHub, python3 }:
-
-with stdenv.lib;
+{ lib, pkgs, stdenv, fetchurl, fetchFromGitHub, python3 }:
 
 let
   python = python3.override {
diff --git a/pkgs/hwi/ecdsa/default.nix b/pkgs/hwi/ecdsa/default.nix
index d9c43f5..9ab0397 100644
--- a/pkgs/hwi/ecdsa/default.nix
+++ b/pkgs/hwi/ecdsa/default.nix
@@ -1,4 +1,5 @@
-{ stdenv
+{ lib
+, stdenv
 , buildPythonPackage
 , fetchPypi
 , pkgs
@@ -18,7 +19,7 @@ buildPythonPackage rec {
   # Only needed for tests
   checkInputs = [ pkgs.openssl ];
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "ECDSA cryptographic signature library";
     homepage = "https://github.com/warner/python-ecdsa";
     license = licenses.mit;
diff --git a/pkgs/hwi/hidapi/default.nix b/pkgs/hwi/hidapi/default.nix
index cd70a7b..0d2692e 100644
--- a/pkgs/hwi/hidapi/default.nix
+++ b/pkgs/hwi/hidapi/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, libusb1, udev, darwin, fetchPypi, buildPythonPackage, cython }:
+{ lib, stdenv, libusb1, udev, darwin, fetchPypi, buildPythonPackage, cython }:
 
 buildPythonPackage rec {
   pname = "hidapi";
@@ -10,18 +10,18 @@ buildPythonPackage rec {
   };
 
   propagatedBuildInputs =
-    stdenv.lib.optionals stdenv.isLinux [ libusb1 udev ] ++
-    stdenv.lib.optionals stdenv.isDarwin [ darwin.IOKit darwin.apple_sdk.frameworks.CoreFoundation ] ++
+    lib.optionals stdenv.isLinux [ libusb1 udev ] ++
+    lib.optionals stdenv.isDarwin [ darwin.IOKit darwin.apple_sdk.frameworks.CoreFoundation ] ++
     [ cython ];
 
   # Fix the USB backend library lookup
-  postPatch = stdenv.lib.optionalString stdenv.isLinux ''
+  postPatch = lib.optionalString stdenv.isLinux ''
     libusb=${libusb1.dev}/include/libusb-1.0
     test -d $libusb || { echo "ERROR: $libusb doesn't exist, please update/fix this build expression."; exit 1; }
     sed -i -e "s|/usr/include/libusb-1.0|$libusb|" setup.py
   '';
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "A Cython interface to the hidapi from https://github.com/signal11/hidapi";
     homepage = "https://github.com/trezor/cython-hidapi";
     # license can actually be either bsd3 or gpl3
diff --git a/pkgs/secp256k1/default.nix b/pkgs/secp256k1/default.nix
index a52adb3..2f9f28f 100644
--- a/pkgs/secp256k1/default.nix
+++ b/pkgs/secp256k1/default.nix
@@ -1,6 +1,4 @@
-{ stdenv, fetchFromGitHub, autoreconfHook }:
-
-let inherit (stdenv.lib) optionals; in
+{ lib, stdenv, fetchFromGitHub, autoreconfHook }:
 
 stdenv.mkDerivation {
   pname = "secp256k1";
@@ -18,7 +16,7 @@ stdenv.mkDerivation {
 
   configureFlags = ["--enable-module-recovery" "--disable-jni" "--enable-experimental" "--enable-module-ecdh" "--enable-benchmark=no" ];
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "Optimized C library for EC operations on curve secp256k1";
     homepage = "https://github.com/bitcoin-core/secp256k1";
     license = with licenses; [ mit ];