diff --git a/pkgs/development/python-modules/cirq-core/default.nix b/pkgs/development/python-modules/cirq-core/default.nix
index 83674eb8c763..92045eb3e3ef 100644
--- a/pkgs/development/python-modules/cirq-core/default.nix
+++ b/pkgs/development/python-modules/cirq-core/default.nix
@@ -1,5 +1,4 @@
 { lib
-, stdenv
 , buildPythonPackage
 , pythonOlder
 , fetchFromGitHub
diff --git a/pkgs/development/python-modules/h5py/default.nix b/pkgs/development/python-modules/h5py/default.nix
index dfa4288e54fc..e555a41cfb0a 100644
--- a/pkgs/development/python-modules/h5py/default.nix
+++ b/pkgs/development/python-modules/h5py/default.nix
@@ -1,5 +1,5 @@
-{ lib, fetchPypi, isPy27, python, buildPythonPackage, pythonOlder
-, numpy, hdf5, cython, six, pkgconfig, unittest2, fetchpatch
+{ lib, fetchPypi, isPy27, buildPythonPackage, pythonOlder
+, numpy, hdf5, cython, six, pkgconfig, unittest2
 , mpi4py ? null, openssh, pytestCheckHook, cached-property }:
 
 assert hdf5.mpiSupport -> mpi4py != null && hdf5.mpi == mpi4py.mpi;
diff --git a/pkgs/development/python-modules/jaxlib/default.nix b/pkgs/development/python-modules/jaxlib/default.nix
index 7761c0372994..f597eeacfced 100644
--- a/pkgs/development/python-modules/jaxlib/default.nix
+++ b/pkgs/development/python-modules/jaxlib/default.nix
@@ -13,7 +13,7 @@
 #   * https://github.com/google/jax/issues/971#issuecomment-508216439
 #   * https://github.com/google/jax/issues/5723#issuecomment-913038780
 
-{ addOpenGLRunpath, autoPatchelfHook, buildPythonPackage, config, fetchPypi
+{ addOpenGLRunpath, autoPatchelfHook, buildPythonPackage, config
 , fetchurl, isPy39, lib, stdenv
 # propagatedBuildInputs
 , absl-py, flatbuffers, scipy, cudatoolkit_11
diff --git a/pkgs/development/python-modules/jupyter-repo2docker/default.nix b/pkgs/development/python-modules/jupyter-repo2docker/default.nix
index 1963763a7c95..e147a5952cf4 100644
--- a/pkgs/development/python-modules/jupyter-repo2docker/default.nix
+++ b/pkgs/development/python-modules/jupyter-repo2docker/default.nix
@@ -1,7 +1,5 @@
 { lib
-, bash
 , buildPythonPackage
-, chardet
 , docker
 , entrypoints
 , escapism
diff --git a/pkgs/development/python-modules/lexid/default.nix b/pkgs/development/python-modules/lexid/default.nix
index 5ef175d57878..0e9cf69ea8c0 100644
--- a/pkgs/development/python-modules/lexid/default.nix
+++ b/pkgs/development/python-modules/lexid/default.nix
@@ -1,4 +1,4 @@
-{ lib, python, pythonOlder, buildPythonPackage, fetchPypi, pytestCheckHook, click }:
+{ lib, pythonOlder, buildPythonPackage, fetchPypi, pytestCheckHook, click }:
 
 buildPythonPackage rec {
   pname = "lexid";
diff --git a/pkgs/development/python-modules/pynest2d/default.nix b/pkgs/development/python-modules/pynest2d/default.nix
index 5d6a006634e2..1f338806a18f 100644
--- a/pkgs/development/python-modules/pynest2d/default.nix
+++ b/pkgs/development/python-modules/pynest2d/default.nix
@@ -1,5 +1,5 @@
 { lib, buildPythonPackage, fetchFromGitHub, python3, cmake
-, pythonOlder, libnest2d, sip_4, clipper }:
+, libnest2d, sip_4, clipper }:
 
 buildPythonPackage rec {
   version = "4.10.0";
diff --git a/pkgs/development/python-modules/pytest-trio/default.nix b/pkgs/development/python-modules/pytest-trio/default.nix
index a9327e2b2320..e42ed5c68386 100644
--- a/pkgs/development/python-modules/pytest-trio/default.nix
+++ b/pkgs/development/python-modules/pytest-trio/default.nix
@@ -1,5 +1,5 @@
 { lib, buildPythonPackage, fetchFromGitHub, pythonOlder
-, trio, python, async_generator, hypothesis, outcome, pytest }:
+, trio, async_generator, hypothesis, outcome, pytest }:
 
 buildPythonPackage rec {
   pname = "pytest-trio";
diff --git a/pkgs/development/python-modules/pytest/5.nix b/pkgs/development/python-modules/pytest/5.nix
index b38c1a759fe3..913133cd7818 100644
--- a/pkgs/development/python-modules/pytest/5.nix
+++ b/pkgs/development/python-modules/pytest/5.nix
@@ -1,16 +1,13 @@
 { lib, buildPythonPackage, pythonOlder, fetchPypi, isPy3k, isPyPy
 , atomicwrites
 , attrs
-, funcsigs
 , hypothesis
-, mock
 , more-itertools
 , packaging
 , pathlib2
 , pluggy
 , py
 , pygments
-, python
 , setuptools
 , setuptools-scm
 , six
diff --git a/pkgs/development/python-modules/python-nest/default.nix b/pkgs/development/python-modules/python-nest/default.nix
index c894654e41e6..8caa61517c6f 100644
--- a/pkgs/development/python-modules/python-nest/default.nix
+++ b/pkgs/development/python-modules/python-nest/default.nix
@@ -1,4 +1,4 @@
-{ buildPythonPackage, fetchPypi, lib, python, python-dateutil, requests
+{ buildPythonPackage, fetchPypi, lib, python-dateutil, requests
 , six, sseclient-py }:
 
 buildPythonPackage rec {
diff --git a/pkgs/development/python-modules/sh/default.nix b/pkgs/development/python-modules/sh/default.nix
index c8da91750f02..a08920a39e2b 100644
--- a/pkgs/development/python-modules/sh/default.nix
+++ b/pkgs/development/python-modules/sh/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchPypi, fetchpatch, python, coverage, lsof, glibcLocales, coreutils }:
+{ lib, buildPythonPackage, fetchPypi, python, coverage, lsof, glibcLocales, coreutils }:
 
 buildPythonPackage rec {
   pname = "sh";
diff --git a/pkgs/development/python-modules/spacy/default.nix b/pkgs/development/python-modules/spacy/default.nix
index c0c8593452c0..d959ad8947d6 100644
--- a/pkgs/development/python-modules/spacy/default.nix
+++ b/pkgs/development/python-modules/spacy/default.nix
@@ -11,7 +11,6 @@
 , jsonschema
 , murmurhash
 , numpy
-, pathlib
 , preshed
 , requests
 , setuptools
diff --git a/pkgs/development/python-modules/stestr/tests.nix b/pkgs/development/python-modules/stestr/tests.nix
index 7a5d47b5dcfe..35fd1ce71a20 100644
--- a/pkgs/development/python-modules/stestr/tests.nix
+++ b/pkgs/development/python-modules/stestr/tests.nix
@@ -1,9 +1,5 @@
-{ stdenv
-, buildPythonPackage
-, ddt
-, sqlalchemy
+{  buildPythonPackage
 , stestr
-, subunit2sql
 }:
 
 buildPythonPackage rec {