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authorSandro Jäckel <sandro.jaeckel@gmail.com>2021-07-20 22:42:24 +0200
committerSandro Jäckel <sandro.jaeckel@gmail.com>2021-07-21 13:32:17 +0200
commit4209fed914e4362f952f4fa6d88c1808aa3df7b8 (patch)
tree88c440c22bb89fccf4b06e2b8696c6a6ef3a9932
parentd863d4b43ee7f4fabadf76a721c57abc54752067 (diff)
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pythonPackages: deprecate pytestcov alias
-rw-r--r--pkgs/applications/graphics/cq-editor/default.nix2
-rw-r--r--pkgs/applications/misc/buku/default.nix2
-rw-r--r--pkgs/applications/networking/instant-messengers/zulip-term/default.nix2
-rw-r--r--pkgs/applications/office/todoman/default.nix2
-rw-r--r--pkgs/development/compilers/vyper/default.nix2
-rw-r--r--pkgs/development/libraries/galario/default.nix2
-rw-r--r--pkgs/development/python-modules/APScheduler/default.nix4
-rw-r--r--pkgs/development/python-modules/aioftp/default.nix4
-rw-r--r--pkgs/development/python-modules/aiohttp-jinja2/default.nix4
-rw-r--r--pkgs/development/python-modules/aiohttp-remotes/default.nix4
-rw-r--r--pkgs/development/python-modules/aiostream/default.nix4
-rw-r--r--pkgs/development/python-modules/alembic/default.nix4
-rw-r--r--pkgs/development/python-modules/apprise/default.nix4
-rw-r--r--pkgs/development/python-modules/aria2p/default.nix4
-rw-r--r--pkgs/development/python-modules/arrow/2.nix4
-rw-r--r--pkgs/development/python-modules/atpublic/default.nix4
-rw-r--r--pkgs/development/python-modules/backports_functools_lru_cache/default.nix4
-rw-r--r--pkgs/development/python-modules/capturer/default.nix2
-rw-r--r--pkgs/development/python-modules/cfn-flip/default.nix4
-rw-r--r--pkgs/development/python-modules/cftime/default.nix4
-rw-r--r--pkgs/development/python-modules/cheroot/default.nix4
-rw-r--r--pkgs/development/python-modules/cherrypy/17.nix4
-rw-r--r--pkgs/development/python-modules/cherrypy/default.nix4
-rw-r--r--pkgs/development/python-modules/clickclick/default.nix4
-rw-r--r--pkgs/development/python-modules/cookiecutter/default.nix4
-rw-r--r--pkgs/development/python-modules/cssselect2/default.nix4
-rw-r--r--pkgs/development/python-modules/dbus-next/default.nix4
-rw-r--r--pkgs/development/python-modules/diskcache/default.nix4
-rw-r--r--pkgs/development/python-modules/django-extensions/default.nix4
-rw-r--r--pkgs/development/python-modules/dockerfile-parse/default.nix4
-rw-r--r--pkgs/development/python-modules/dogpile.cache/default.nix4
-rw-r--r--pkgs/development/python-modules/dyn/default.nix4
-rw-r--r--pkgs/development/python-modules/easysnmp/default.nix4
-rw-r--r--pkgs/development/python-modules/flask-caching/default.nix4
-rw-r--r--pkgs/development/python-modules/flickrapi/default.nix4
-rw-r--r--pkgs/development/python-modules/flufl/lock.nix4
-rw-r--r--pkgs/development/python-modules/graspologic/default.nix4
-rw-r--r--pkgs/development/python-modules/gunicorn/19.nix4
-rw-r--r--pkgs/development/python-modules/gunicorn/default.nix4
-rw-r--r--pkgs/development/python-modules/hickle/default.nix4
-rw-r--r--pkgs/development/python-modules/httpcore/default.nix4
-rw-r--r--pkgs/development/python-modules/httpx/default.nix4
-rw-r--r--pkgs/development/python-modules/hyppo/default.nix4
-rw-r--r--pkgs/development/python-modules/ibm-cloud-sdk-core/default.nix4
-rw-r--r--pkgs/development/python-modules/inquirer/default.nix4
-rw-r--r--pkgs/development/python-modules/iocapture/default.nix4
-rw-r--r--pkgs/development/python-modules/ipydatawidgets/default.nix4
-rw-r--r--pkgs/development/python-modules/jedi/default.nix4
-rw-r--r--pkgs/development/python-modules/jira/default.nix4
-rw-r--r--pkgs/development/python-modules/jsonlines/default.nix4
-rw-r--r--pkgs/development/python-modules/jupyterlab_server/default.nix2
-rw-r--r--pkgs/development/python-modules/keras/default.nix4
-rw-r--r--pkgs/development/python-modules/libais/default.nix4
-rw-r--r--pkgs/development/python-modules/m3u8/default.nix4
-rw-r--r--pkgs/development/python-modules/markdownsuperscript/default.nix4
-rw-r--r--pkgs/development/python-modules/marshmallow-polyfield/default.nix4
-rw-r--r--pkgs/development/python-modules/mne-python/default.nix4
-rw-r--r--pkgs/development/python-modules/multidict/default.nix4
-rw-r--r--pkgs/development/python-modules/mwclient/default.nix4
-rw-r--r--pkgs/development/python-modules/natsort/default.nix4
-rw-r--r--pkgs/development/python-modules/nbdime/default.nix4
-rw-r--r--pkgs/development/python-modules/nbval/default.nix4
-rw-r--r--pkgs/development/python-modules/nipype/default.nix4
-rw-r--r--pkgs/development/python-modules/nix-prefetch-github/default.nix4
-rw-r--r--pkgs/development/python-modules/nplusone/default.nix4
-rw-r--r--pkgs/development/python-modules/openapi-schema-validator/default.nix4
-rw-r--r--pkgs/development/python-modules/openapi-spec-validator/default.nix4
-rw-r--r--pkgs/development/python-modules/orm/default.nix4
-rw-r--r--pkgs/development/python-modules/papermill/default.nix4
-rw-r--r--pkgs/development/python-modules/papis/default.nix4
-rw-r--r--pkgs/development/python-modules/periodictable/default.nix4
-rw-r--r--pkgs/development/python-modules/pglast/default.nix4
-rw-r--r--pkgs/development/python-modules/phonemizer/default.nix4
-rw-r--r--pkgs/development/python-modules/plaster-pastedeploy/default.nix4
-rw-r--r--pkgs/development/python-modules/plaster/default.nix4
-rw-r--r--pkgs/development/python-modules/poetry/default.nix4
-rw-r--r--pkgs/development/python-modules/portalocker/default.nix2
-rw-r--r--pkgs/development/python-modules/portend/default.nix4
-rw-r--r--pkgs/development/python-modules/prance/default.nix4
-rw-r--r--pkgs/development/python-modules/property-manager/default.nix4
-rw-r--r--pkgs/development/python-modules/psautohint/default.nix4
-rw-r--r--pkgs/development/python-modules/py-air-control-exporter/default.nix4
-rw-r--r--pkgs/development/python-modules/pycategories/default.nix4
-rw-r--r--pkgs/development/python-modules/pyls-mypy/default.nix4
-rw-r--r--pkgs/development/python-modules/pylti/default.nix4
-rw-r--r--pkgs/development/python-modules/pytest-astropy-header/default.nix4
-rw-r--r--pkgs/development/python-modules/pytest-factoryboy/default.nix4
-rw-r--r--pkgs/development/python-modules/pytest-filter-subpackage/default.nix4
-rw-r--r--pkgs/development/python-modules/pytest-shutil/default.nix4
-rw-r--r--pkgs/development/python-modules/pytest-timeout/default.nix4
-rw-r--r--pkgs/development/python-modules/pytest-virtualenv/default.nix4
-rw-r--r--pkgs/development/python-modules/python-hosts/default.nix4
-rw-r--r--pkgs/development/python-modules/python-jsonrpc-server/default.nix4
-rw-r--r--pkgs/development/python-modules/python-language-server/default.nix4
-rw-r--r--pkgs/development/python-modules/python-lz4/default.nix4
-rw-r--r--pkgs/development/python-modules/python-multipart/default.nix4
-rw-r--r--pkgs/development/python-modules/qcelemental/default.nix4
-rw-r--r--pkgs/development/python-modules/qcengine/default.nix4
-rw-r--r--pkgs/development/python-modules/rasterio/default.nix4
-rw-r--r--pkgs/development/python-modules/readchar/default.nix4
-rw-r--r--pkgs/development/python-modules/reikna/default.nix4
-rw-r--r--pkgs/development/python-modules/resampy/default.nix4
-rw-r--r--pkgs/development/python-modules/rising/default.nix4
-rw-r--r--pkgs/development/python-modules/runway-python/default.nix4
-rw-r--r--pkgs/development/python-modules/rxv/default.nix4
-rw-r--r--pkgs/development/python-modules/scikit-build/default.nix4
-rw-r--r--pkgs/development/python-modules/scrapy-fake-useragent/default.nix4
-rw-r--r--pkgs/development/python-modules/skorch/default.nix4
-rw-r--r--pkgs/development/python-modules/softlayer/default.nix4
-rw-r--r--pkgs/development/python-modules/stripe/default.nix4
-rw-r--r--pkgs/development/python-modules/stups-cli-support/default.nix4
-rw-r--r--pkgs/development/python-modules/stups-fullstop/default.nix4
-rw-r--r--pkgs/development/python-modules/stups-pierone/default.nix4
-rw-r--r--pkgs/development/python-modules/stups-tokens/default.nix4
-rw-r--r--pkgs/development/python-modules/stups-zign/default.nix4
-rw-r--r--pkgs/development/python-modules/subliminal/default.nix4
-rw-r--r--pkgs/development/python-modules/sunpy/default.nix4
-rw-r--r--pkgs/development/python-modules/tablib/default.nix4
-rw-r--r--pkgs/development/python-modules/tempora/default.nix4
-rw-r--r--pkgs/development/python-modules/textwrap3/default.nix4
-rw-r--r--pkgs/development/python-modules/threadpoolctl/default.nix4
-rw-r--r--pkgs/development/python-modules/timezonefinder/default.nix4
-rw-r--r--pkgs/development/python-modules/tinycss2/default.nix4
-rw-r--r--pkgs/development/python-modules/toggl-cli/default.nix4
-rw-r--r--pkgs/development/python-modules/typer/default.nix4
-rw-r--r--pkgs/development/python-modules/typesentry/default.nix4
-rw-r--r--pkgs/development/python-modules/typesystem/default.nix4
-rw-r--r--pkgs/development/python-modules/uarray/default.nix4
-rw-r--r--pkgs/development/python-modules/venusian/default.nix4
-rw-r--r--pkgs/development/python-modules/weasyprint/default.nix4
-rw-r--r--pkgs/development/python-modules/word2vec/default.nix4
-rw-r--r--pkgs/development/python-modules/wordcloud/default.nix4
-rw-r--r--pkgs/development/tools/sourcetrail/jedi.nix4
-rw-r--r--pkgs/development/tools/vim-vint/default.nix2
-rw-r--r--pkgs/servers/dns/doh-proxy/default.nix2
-rw-r--r--pkgs/tools/admin/lexicon/default.nix2
-rw-r--r--pkgs/tools/admin/salt/pepper/default.nix2
-rw-r--r--pkgs/tools/backup/zfs-replicate/default.nix4
-rw-r--r--pkgs/tools/filesystems/gitfs/default.nix2
-rw-r--r--pkgs/tools/misc/bonfire/default.nix2
-rw-r--r--pkgs/tools/security/vulnix/default.nix2
-rw-r--r--pkgs/top-level/python-aliases.nix1
-rw-r--r--pkgs/top-level/python-packages.nix3
143 files changed, 268 insertions, 268 deletions
diff --git a/pkgs/applications/graphics/cq-editor/default.nix b/pkgs/applications/graphics/cq-editor/default.nix
index b9b2eb368735..33bae268c8a6 100644
--- a/pkgs/applications/graphics/cq-editor/default.nix
+++ b/pkgs/applications/graphics/cq-editor/default.nix
@@ -41,7 +41,7 @@ mkDerivationWith python3Packages.buildPythonApplication rec {
     pytest
     pytest-xvfb
     pytest-mock
-    pytestcov
+    pytest-cov
     pytest-repeat
     pytest-qt
   ];
diff --git a/pkgs/applications/misc/buku/default.nix b/pkgs/applications/misc/buku/default.nix
index 68b4f7b3e560..c559e239c09e 100644
--- a/pkgs/applications/misc/buku/default.nix
+++ b/pkgs/applications/misc/buku/default.nix
@@ -12,7 +12,7 @@ with python3.pkgs; buildPythonApplication rec {
   };
 
   checkInputs = [
-    pytestcov
+    pytest-cov
     hypothesis
     pytest
     pylint
diff --git a/pkgs/applications/networking/instant-messengers/zulip-term/default.nix b/pkgs/applications/networking/instant-messengers/zulip-term/default.nix
index e97ea7bb65f5..b2f80c70d240 100644
--- a/pkgs/applications/networking/instant-messengers/zulip-term/default.nix
+++ b/pkgs/applications/networking/instant-messengers/zulip-term/default.nix
@@ -36,7 +36,7 @@ python3.pkgs.buildPythonApplication rec {
     glibcLocales
   ] ++ (with python3.pkgs; [
     pytestCheckHook
-    pytestcov
+    pytest-cov
     pytest-mock
   ]);
 
diff --git a/pkgs/applications/office/todoman/default.nix b/pkgs/applications/office/todoman/default.nix
index 5894c6c3e141..83bbc6cf53f9 100644
--- a/pkgs/applications/office/todoman/default.nix
+++ b/pkgs/applications/office/todoman/default.nix
@@ -45,7 +45,7 @@ buildPythonApplication rec {
     hypothesis
     pytest
     pytestrunner
-    pytestcov
+    pytest-cov
     glibcLocales
   ];
 
diff --git a/pkgs/development/compilers/vyper/default.nix b/pkgs/development/compilers/vyper/default.nix
index d0bfa5b0b962..4bdad5f7c61c 100644
--- a/pkgs/development/compilers/vyper/default.nix
+++ b/pkgs/development/compilers/vyper/default.nix
@@ -1,5 +1,5 @@
 { lib, buildPythonPackage, fetchPypi, writeText, asttokens
-, pycryptodome, pytest_xdist, pytestcov, recommonmark, semantic-version, sphinx
+, pycryptodome, pytest_xdist, pytest-cov, recommonmark, semantic-version, sphinx
 , sphinx_rtd_theme, pytestrunner }:
 
 let
diff --git a/pkgs/development/libraries/galario/default.nix b/pkgs/development/libraries/galario/default.nix
index 4e28f84bacdb..7fb93a61a0fe 100644
--- a/pkgs/development/libraries/galario/default.nix
+++ b/pkgs/development/libraries/galario/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
     pythonPackages.pytest
   ];
 
-  checkInputs = lib.optional enablePython [ pythonPackages.scipy pythonPackages.pytestcov ];
+  checkInputs = lib.optional enablePython [ pythonPackages.scipy pythonPackages.pytest-cov ];
 
   preConfigure = ''
     mkdir -p build/external/src
diff --git a/pkgs/development/python-modules/APScheduler/default.nix b/pkgs/development/python-modules/APScheduler/default.nix
index 1a27c8c1f0fc..a4083707a072 100644
--- a/pkgs/development/python-modules/APScheduler/default.nix
+++ b/pkgs/development/python-modules/APScheduler/default.nix
@@ -6,7 +6,7 @@
 , pytestCheckHook
 , pytest-asyncio
 , pytest-tornado
-, pytestcov
+, pytest-cov
 , sqlalchemy
 , tornado
 , twisted
@@ -38,7 +38,7 @@ buildPythonPackage rec {
     pytest-asyncio
     pytest-tornado
     pytestCheckHook
-    pytestcov
+    pytest-cov
     sqlalchemy
     tornado
     twisted
diff --git a/pkgs/development/python-modules/aioftp/default.nix b/pkgs/development/python-modules/aioftp/default.nix
index e3ca13859acc..a610dba76614 100644
--- a/pkgs/development/python-modules/aioftp/default.nix
+++ b/pkgs/development/python-modules/aioftp/default.nix
@@ -4,7 +4,7 @@
 , isPy27
 , pytest
 , pytest-asyncio
-, pytestcov
+, pytest-cov
 , trustme
 , async-timeout
 }:
@@ -22,7 +22,7 @@ buildPythonPackage rec {
   checkInputs = [
     pytest
     pytest-asyncio
-    pytestcov
+    pytest-cov
     trustme
     async-timeout
   ];
diff --git a/pkgs/development/python-modules/aiohttp-jinja2/default.nix b/pkgs/development/python-modules/aiohttp-jinja2/default.nix
index 0a939dfb0097..589aa14509e2 100644
--- a/pkgs/development/python-modules/aiohttp-jinja2/default.nix
+++ b/pkgs/development/python-modules/aiohttp-jinja2/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchPypi, aiohttp, jinja2, pytest, pytest-aiohttp, pytestcov }:
+{ lib, buildPythonPackage, fetchPypi, aiohttp, jinja2, pytest, pytest-aiohttp, pytest-cov }:
 
 buildPythonPackage rec {
   pname = "aiohttp-jinja2";
@@ -11,7 +11,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ aiohttp jinja2 ];
 
-  checkInputs = [ pytest pytest-aiohttp pytestcov ];
+  checkInputs = [ pytest pytest-aiohttp pytest-cov ];
 
   checkPhase = ''
     pytest -W ignore::DeprecationWarning
diff --git a/pkgs/development/python-modules/aiohttp-remotes/default.nix b/pkgs/development/python-modules/aiohttp-remotes/default.nix
index 8a8f7c4b3132..f3abbddfd957 100644
--- a/pkgs/development/python-modules/aiohttp-remotes/default.nix
+++ b/pkgs/development/python-modules/aiohttp-remotes/default.nix
@@ -1,5 +1,5 @@
 { lib, fetchpatch, buildPythonPackage, fetchPypi
-, aiohttp, pytest, pytestcov, pytest-aiohttp
+, aiohttp, pytest, pytest-cov, pytest-aiohttp
 }:
 
 buildPythonPackage rec {
@@ -13,7 +13,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ aiohttp ];
 
-  checkInputs = [ pytest pytestcov pytest-aiohttp ];
+  checkInputs = [ pytest pytest-cov pytest-aiohttp ];
   checkPhase = ''
     python -m pytest
   '';
diff --git a/pkgs/development/python-modules/aiostream/default.nix b/pkgs/development/python-modules/aiostream/default.nix
index 0bdab3bb2833..e15271bafdbc 100644
--- a/pkgs/development/python-modules/aiostream/default.nix
+++ b/pkgs/development/python-modules/aiostream/default.nix
@@ -3,7 +3,7 @@
 , fetchFromGitHub
 , pythonOlder
 , pytestCheckHook
-, pytestcov
+, pytest-cov
 , pytest-asyncio
 }:
 
@@ -19,7 +19,7 @@ buildPythonPackage rec {
     sha256 = "1r3x9qwl08yscmzvhafc6gsmq84lr17s6p7a1qxr49cmdvjzsc13";
   };
 
-  checkInputs = [ pytestCheckHook pytestcov pytest-asyncio ];
+  checkInputs = [ pytestCheckHook pytest-cov pytest-asyncio ];
 
   meta = with lib; {
     description = "Generator-based operators for asynchronous iteration";
diff --git a/pkgs/development/python-modules/alembic/default.nix b/pkgs/development/python-modules/alembic/default.nix
index 81502a470a68..9c7244b3c066 100644
--- a/pkgs/development/python-modules/alembic/default.nix
+++ b/pkgs/development/python-modules/alembic/default.nix
@@ -1,5 +1,5 @@
 { lib, buildPythonPackage, fetchPypi
-, pytest, pytestcov, mock, coverage, setuptools
+, pytest, pytest-cov, mock, coverage, setuptools
 , Mako, sqlalchemy, python-editor, python-dateutil
 }:
 
@@ -12,7 +12,7 @@ buildPythonPackage rec {
     sha256 = "a21fedebb3fb8f6bbbba51a11114f08c78709377051384c9c5ead5705ee93a51";
   };
 
-  buildInputs = [ pytest pytestcov mock coverage ];
+  buildInputs = [ pytest pytest-cov mock coverage ];
   propagatedBuildInputs = [ Mako sqlalchemy python-editor python-dateutil setuptools ];
 
   # no traditional test suite
diff --git a/pkgs/development/python-modules/apprise/default.nix b/pkgs/development/python-modules/apprise/default.nix
index 61cfed3dbb9e..1bf5a93130dd 100644
--- a/pkgs/development/python-modules/apprise/default.nix
+++ b/pkgs/development/python-modules/apprise/default.nix
@@ -1,6 +1,6 @@
 { lib, buildPythonPackage, fetchPypi, installShellFiles
 , Babel, requests, requests_oauthlib, six, click, markdown, pyyaml, cryptography
-, pytestrunner, coverage, flake8, mock, pytestCheckHook, pytestcov, tox, gntp, sleekxmpp
+, pytestrunner, coverage, flake8, mock, pytestCheckHook, pytest-cov, tox, gntp, sleekxmpp
 }:
 
 buildPythonPackage rec {
@@ -19,7 +19,7 @@ buildPythonPackage rec {
   ];
 
   checkInputs = [
-    pytestrunner coverage flake8 mock pytestCheckHook pytestcov tox gntp sleekxmpp
+    pytestrunner coverage flake8 mock pytestCheckHook pytest-cov tox gntp sleekxmpp
   ];
 
   disabledTests = [ "test_apprise_cli_nux_env"  ];
diff --git a/pkgs/development/python-modules/aria2p/default.nix b/pkgs/development/python-modules/aria2p/default.nix
index 9ea4fdf64b5b..4755c80e707c 100644
--- a/pkgs/development/python-modules/aria2p/default.nix
+++ b/pkgs/development/python-modules/aria2p/default.nix
@@ -1,5 +1,5 @@
 { lib, buildPythonPackage, fetchFromGitHub, pythonOlder
-, aria2, poetry, pytest, pytestcov, pytest_xdist, responses
+, aria2, poetry, pytest, pytest-cov, pytest_xdist, responses
 , asciimatics, loguru, requests, setuptools, websocket-client
 }:
 
@@ -22,7 +22,7 @@ buildPythonPackage rec {
     export HOME=$TMPDIR
   '';
 
-  checkInputs = [ aria2 responses pytest pytestcov pytest_xdist ];
+  checkInputs = [ aria2 responses pytest pytest-cov pytest_xdist ];
 
   # Tests are not all stable/deterministic,
   # they rely on actually running an aria2c daemon and communicating with it,
diff --git a/pkgs/development/python-modules/arrow/2.nix b/pkgs/development/python-modules/arrow/2.nix
index d87f1ede3ccd..88864ec78b77 100644
--- a/pkgs/development/python-modules/arrow/2.nix
+++ b/pkgs/development/python-modules/arrow/2.nix
@@ -1,6 +1,6 @@
 { lib, buildPythonPackage, fetchPypi, isPy27
 , nose, chai, simplejson, backports_functools_lru_cache
-, python-dateutil, pytz, pytest-mock, sphinx, dateparser, pytestcov
+, python-dateutil, pytz, pytest-mock, sphinx, dateparser, pytest-cov
 , pytestCheckHook
 }:
 
@@ -19,7 +19,7 @@ buildPythonPackage rec {
   checkInputs = [
     dateparser
     pytestCheckHook
-    pytestcov
+    pytest-cov
     pytest-mock
     pytz
     simplejson
diff --git a/pkgs/development/python-modules/atpublic/default.nix b/pkgs/development/python-modules/atpublic/default.nix
index 5f00955eef92..4d96bcbe26b5 100644
--- a/pkgs/development/python-modules/atpublic/default.nix
+++ b/pkgs/development/python-modules/atpublic/default.nix
@@ -1,6 +1,6 @@
 { lib, isPy3k, pythonOlder, fetchPypi, buildPythonPackage
 , pytest
-, pytestcov
+, pytest-cov
 , sybil
 , typing-extensions
 }:
@@ -20,7 +20,7 @@ buildPythonPackage rec {
   ];
 
   checkInputs = [
-    pytest pytestcov sybil
+    pytest pytest-cov sybil
   ];
 
   checkPhase = ''
diff --git a/pkgs/development/python-modules/backports_functools_lru_cache/default.nix b/pkgs/development/python-modules/backports_functools_lru_cache/default.nix
index 586176300b7d..cb5665363f9c 100644
--- a/pkgs/development/python-modules/backports_functools_lru_cache/default.nix
+++ b/pkgs/development/python-modules/backports_functools_lru_cache/default.nix
@@ -6,7 +6,7 @@
 , pytest
 , pytest-black
 , pytest-flake8
-, pytestcov
+, pytest-cov
 }:
 
 buildPythonPackage rec {
@@ -20,7 +20,7 @@ buildPythonPackage rec {
 
   nativeBuildInputs = [ setuptools-scm ];
 
-  checkInputs = [ pytest pytest-flake8 pytest-black pytestcov ];
+  checkInputs = [ pytest pytest-flake8 pytest-black pytest-cov ];
   # ironically, they fail a linting test, and pytest.ini forces that test suite
   checkPhase = ''
     rm backports/functools_lru_cache.py
diff --git a/pkgs/development/python-modules/capturer/default.nix b/pkgs/development/python-modules/capturer/default.nix
index 0e8732f69a8f..02bdd0fc72ed 100644
--- a/pkgs/development/python-modules/capturer/default.nix
+++ b/pkgs/development/python-modules/capturer/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, buildPythonPackage, fetchFromGitHub, humanfriendly, pytestCheckHook, pytestcov }:
+{ stdenv, lib, buildPythonPackage, fetchFromGitHub, humanfriendly, pytestCheckHook, pytest-cov }:
 
 buildPythonPackage rec {
   pname = "capturer";
diff --git a/pkgs/development/python-modules/cfn-flip/default.nix b/pkgs/development/python-modules/cfn-flip/default.nix
index da04ecf68897..98d428cdbeba 100644
--- a/pkgs/development/python-modules/cfn-flip/default.nix
+++ b/pkgs/development/python-modules/cfn-flip/default.nix
@@ -5,7 +5,7 @@
 # pythonPackages
 , click
 , pytest
-, pytestcov
+, pytest-cov
 , pytestrunner
 , pyyaml
 , six
@@ -30,7 +30,7 @@ buildPythonPackage rec {
 
   checkInputs = [
     pytest
-    pytestcov
+    pytest-cov
     pytestrunner
   ];
 
diff --git a/pkgs/development/python-modules/cftime/default.nix b/pkgs/development/python-modules/cftime/default.nix
index bec5f03cd88b..46fad656cabe 100644
--- a/pkgs/development/python-modules/cftime/default.nix
+++ b/pkgs/development/python-modules/cftime/default.nix
@@ -2,7 +2,7 @@
 , fetchPypi
 , pytestCheckHook
 , coveralls
-, pytestcov
+, pytest-cov
 , cython
 , numpy
 , python
@@ -20,7 +20,7 @@ buildPythonPackage rec {
   checkInputs = [
     pytestCheckHook
     coveralls
-    pytestcov
+    pytest-cov
   ];
 
   nativeBuildInputs = [
diff --git a/pkgs/development/python-modules/cheroot/default.nix b/pkgs/development/python-modules/cheroot/default.nix
index 50f6d33791de..6e9256ffacfe 100644
--- a/pkgs/development/python-modules/cheroot/default.nix
+++ b/pkgs/development/python-modules/cheroot/default.nix
@@ -9,7 +9,7 @@
 , portend
 , pyopenssl
 , pytestCheckHook
-, pytestcov
+, pytest-cov
 , pytest-mock
 , requests
 , requests-toolbelt
@@ -46,7 +46,7 @@ buildPythonPackage rec {
     portend
     pyopenssl
     pytestCheckHook
-    pytestcov
+    pytest-cov
     pytest-mock
     requests
     requests-toolbelt
diff --git a/pkgs/development/python-modules/cherrypy/17.nix b/pkgs/development/python-modules/cherrypy/17.nix
index df50219fb170..82e878c83042 100644
--- a/pkgs/development/python-modules/cherrypy/17.nix
+++ b/pkgs/development/python-modules/cherrypy/17.nix
@@ -1,7 +1,7 @@
 { lib, stdenv, buildPythonPackage, fetchPypi
 , setuptools-scm
 , cheroot, contextlib2, portend, routes, six, zc_lockfile
-, backports_unittest-mock, objgraph, pathpy, pytest, pytestcov, backports_functools_lru_cache, requests_toolbelt
+, backports_unittest-mock, objgraph, pathpy, pytest, pytest-cov, backports_functools_lru_cache, requests_toolbelt
 }:
 
 buildPythonPackage rec {
@@ -21,7 +21,7 @@ buildPythonPackage rec {
   nativeBuildInputs = [ setuptools-scm ];
 
   checkInputs = [
-    backports_unittest-mock objgraph pathpy pytest pytestcov backports_functools_lru_cache requests_toolbelt
+    backports_unittest-mock objgraph pathpy pytest pytest-cov backports_functools_lru_cache requests_toolbelt
   ];
 
   checkPhase = ''
diff --git a/pkgs/development/python-modules/cherrypy/default.nix b/pkgs/development/python-modules/cherrypy/default.nix
index 0b574e9114cf..b4fa2b8aeb45 100644
--- a/pkgs/development/python-modules/cherrypy/default.nix
+++ b/pkgs/development/python-modules/cherrypy/default.nix
@@ -2,7 +2,7 @@
 , setuptools-scm
 , cheroot, portend, more-itertools, zc_lockfile, routes
 , jaraco_collections
-, objgraph, pytest, pytestcov, pathpy, requests_toolbelt, pytest-services
+, objgraph, pytest, pytest-cov, pathpy, requests_toolbelt, pytest-services
 , fetchpatch
 }:
 
@@ -47,7 +47,7 @@ buildPythonPackage rec {
   ];
 
   checkInputs = [
-    objgraph pytest pytestcov pathpy requests_toolbelt pytest-services
+    objgraph pytest pytest-cov pathpy requests_toolbelt pytest-services
   ];
 
   # Keyboard interrupt ends test suite run
diff --git a/pkgs/development/python-modules/clickclick/default.nix b/pkgs/development/python-modules/clickclick/default.nix
index d829f43dc0d1..8aeb73bb25b2 100644
--- a/pkgs/development/python-modules/clickclick/default.nix
+++ b/pkgs/development/python-modules/clickclick/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchFromGitHub, isPy36, flake8, click, pyyaml, six, pytestCheckHook, pytestcov }:
+{ lib, buildPythonPackage, fetchFromGitHub, isPy36, flake8, click, pyyaml, six, pytestCheckHook, pytest-cov }:
 
 buildPythonPackage rec {
   pname = "clickclick";
@@ -11,7 +11,7 @@ buildPythonPackage rec {
     sha256 = "1rij9ws9nhsmagiy1vclzliiqfkxi006rf65qvrw1k3sm2s8p5g0";
   };
 
-  checkInputs = [ pytestCheckHook pytestcov ];
+  checkInputs = [ pytestCheckHook pytest-cov ];
   propagatedBuildInputs = [ flake8 click pyyaml six ];
 
   # test_cli asserts on exact quoting style of output
diff --git a/pkgs/development/python-modules/cookiecutter/default.nix b/pkgs/development/python-modules/cookiecutter/default.nix
index b2a13cdbb654..de42f7284112 100644
--- a/pkgs/development/python-modules/cookiecutter/default.nix
+++ b/pkgs/development/python-modules/cookiecutter/default.nix
@@ -1,5 +1,5 @@
 { lib, buildPythonPackage, fetchPypi, isPyPy
-, pytest, pytestcov, pytest-mock, freezegun
+, pytest, pytest-cov, pytest-mock, freezegun
 , jinja2, future, binaryornot, click, whichcraft, poyo, jinja2_time, requests
 , python-slugify }:
 
@@ -15,7 +15,7 @@ buildPythonPackage rec {
     sha256 = "sha256-a5pNcoguJDvgd6c5fQ8fdv5mzz35HzEV27UzDiFPpFc=";
   };
 
-  checkInputs = [ pytest pytestcov pytest-mock freezegun ];
+  checkInputs = [ pytest pytest-cov pytest-mock freezegun ];
   propagatedBuildInputs = [
     jinja2 future binaryornot click whichcraft poyo jinja2_time requests python-slugify
   ];
diff --git a/pkgs/development/python-modules/cssselect2/default.nix b/pkgs/development/python-modules/cssselect2/default.nix
index eadc3eb32b1f..28e524a265ba 100644
--- a/pkgs/development/python-modules/cssselect2/default.nix
+++ b/pkgs/development/python-modules/cssselect2/default.nix
@@ -5,7 +5,7 @@
 , tinycss2
 , pytest
 , pytestrunner
-, pytestcov
+, pytest-cov
 , pytest-flake8
 , pytest-isort
 }:
@@ -22,7 +22,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ tinycss2 ];
 
-  checkInputs = [ pytest pytestrunner pytestcov pytest-flake8 pytest-isort ];
+  checkInputs = [ pytest pytestrunner pytest-cov pytest-flake8 pytest-isort ];
 
   meta = with lib; {
     description = "CSS selectors for Python ElementTree";
diff --git a/pkgs/development/python-modules/dbus-next/default.nix b/pkgs/development/python-modules/dbus-next/default.nix
index d7cf79f9d07c..ba27b633fefd 100644
--- a/pkgs/development/python-modules/dbus-next/default.nix
+++ b/pkgs/development/python-modules/dbus-next/default.nix
@@ -2,7 +2,7 @@
 , buildPythonPackage
 , fetchFromGitHub
 , python
-, dbus, dbus-python, pytest, pytestcov, pytest-asyncio, pytest-timeout
+, dbus, dbus-python, pytest, pytest-cov, pytest-asyncio, pytest-timeout
 }:
 
 buildPythonPackage rec {
@@ -20,7 +20,7 @@ buildPythonPackage rec {
     dbus
     dbus-python
     pytest
-    pytestcov
+    pytest-cov
     pytest-asyncio
     pytest-timeout
   ];
diff --git a/pkgs/development/python-modules/diskcache/default.nix b/pkgs/development/python-modules/diskcache/default.nix
index ed6007f87ed2..50b1a94c7795 100644
--- a/pkgs/development/python-modules/diskcache/default.nix
+++ b/pkgs/development/python-modules/diskcache/default.nix
@@ -3,7 +3,7 @@
 , buildPythonPackage
 , fetchFromGitHub
 , pytestCheckHook
-, pytestcov
+, pytest-cov
 , pytest_xdist
 , pytest-django
 , mock
@@ -22,7 +22,7 @@ buildPythonPackage rec {
 
   checkInputs = [
     pytestCheckHook
-    pytestcov
+    pytest-cov
     pytest_xdist
     pytest-django
     mock
diff --git a/pkgs/development/python-modules/django-extensions/default.nix b/pkgs/development/python-modules/django-extensions/default.nix
index 8ee903bedc2a..cbe5dfbaa70b 100644
--- a/pkgs/development/python-modules/django-extensions/default.nix
+++ b/pkgs/development/python-modules/django-extensions/default.nix
@@ -5,7 +5,7 @@
 , mock
 , pygments
 , pytest
-, pytestcov
+, pytest-cov
 , pytest-django
 , python-dateutil
 , shortuuid
@@ -40,7 +40,7 @@ buildPythonPackage rec {
     mock
     pygments # not explicitly declared in setup.py, but some tests require it
     pytest
-    pytestcov
+    pytest-cov
     pytest-django
     python-dateutil
     shortuuid
diff --git a/pkgs/development/python-modules/dockerfile-parse/default.nix b/pkgs/development/python-modules/dockerfile-parse/default.nix
index 7afe92b4337b..e9a31b461fd6 100644
--- a/pkgs/development/python-modules/dockerfile-parse/default.nix
+++ b/pkgs/development/python-modules/dockerfile-parse/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchPypi, six, pytestcov, pytest }:
+{ lib, buildPythonPackage, fetchPypi, six, pytest-cov, pytest }:
 
 buildPythonPackage rec {
   version = "1.2.0";
@@ -15,7 +15,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ six ];
 
-  checkInputs = [ pytestcov pytest ];
+  checkInputs = [ pytest-cov pytest ];
 
   meta = with lib; {
     description = "Python library for parsing Dockerfile files";
diff --git a/pkgs/development/python-modules/dogpile.cache/default.nix b/pkgs/development/python-modules/dogpile.cache/default.nix
index 6e14355c2934..05eb173c5599 100644
--- a/pkgs/development/python-modules/dogpile.cache/default.nix
+++ b/pkgs/development/python-modules/dogpile.cache/default.nix
@@ -3,7 +3,7 @@
 , fetchPypi
 , pythonOlder
 , pytest
-, pytestcov
+, pytest-cov
 , mock
 , Mako
 , decorator
@@ -33,7 +33,7 @@ buildPythonPackage rec {
     pytest
   '';
 
-  checkInputs = [ pytest pytestcov mock Mako ];
+  checkInputs = [ pytest pytest-cov mock Mako ];
 
   propagatedBuildInputs = [ decorator stevedore ];
 
diff --git a/pkgs/development/python-modules/dyn/default.nix b/pkgs/development/python-modules/dyn/default.nix
index 7cddb324f3a1..72986e7bda1e 100644
--- a/pkgs/development/python-modules/dyn/default.nix
+++ b/pkgs/development/python-modules/dyn/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchPypi, pytest, pytestcov, mock
+{ lib, buildPythonPackage, fetchPypi, pytest, pytest-cov, mock
 , pytest_xdist, covCore, glibcLocales }:
 
 buildPythonPackage rec {
@@ -14,7 +14,7 @@ buildPythonPackage rec {
 
   checkInputs = [
     pytest
-    pytestcov
+    pytest-cov
     mock
     pytest_xdist
     covCore
diff --git a/pkgs/development/python-modules/easysnmp/default.nix b/pkgs/development/python-modules/easysnmp/default.nix
index 11b13d8325a0..c55bf52a6643 100644
--- a/pkgs/development/python-modules/easysnmp/default.nix
+++ b/pkgs/development/python-modules/easysnmp/default.nix
@@ -5,7 +5,7 @@
 , net-snmp
 , openssl
 , pytest
-, pytestcov
+, pytest-cov
 , pytest-flake8
 , pytest-sugar
 , termcolor
@@ -27,7 +27,7 @@ buildPythonPackage rec {
 
   checkInputs = [
     pytest
-    pytestcov
+    pytest-cov
     pytest-flake8
     pytest-sugar
     termcolor
diff --git a/pkgs/development/python-modules/flask-caching/default.nix b/pkgs/development/python-modules/flask-caching/default.nix
index 708c5c351ea0..9fd80ac6d677 100644
--- a/pkgs/development/python-modules/flask-caching/default.nix
+++ b/pkgs/development/python-modules/flask-caching/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchPypi, isPy27, flask, pytestCheckHook, pytestcov, pytest-xprocess, pytestcache }:
+{ lib, buildPythonPackage, fetchPypi, isPy27, flask, pytestCheckHook, pytest-cov, pytest-xprocess, pytestcache }:
 
 buildPythonPackage rec {
   pname = "Flask-Caching";
@@ -12,7 +12,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ flask ];
 
-  checkInputs = [ pytestCheckHook pytestcov pytest-xprocess pytestcache ];
+  checkInputs = [ pytestCheckHook pytest-cov pytest-xprocess pytestcache ];
 
   disabledTests = [
     # backend_cache relies on pytest-cache, which is a stale package from 2013
diff --git a/pkgs/development/python-modules/flickrapi/default.nix b/pkgs/development/python-modules/flickrapi/default.nix
index cfcc4d362997..73b7eea6e63a 100644
--- a/pkgs/development/python-modules/flickrapi/default.nix
+++ b/pkgs/development/python-modules/flickrapi/default.nix
@@ -6,7 +6,7 @@
 , requests_oauthlib
 , pytest
 , pytestrunner
-, pytestcov
+, pytest-cov
 , responses
 }:
 
@@ -21,7 +21,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ requests requests_toolbelt requests_oauthlib ];
 
-  checkInputs = [ pytest pytestrunner pytestcov responses ];
+  checkInputs = [ pytest pytestrunner pytest-cov responses ];
   doCheck = false; # Otherwise:
   # ========================= no tests ran in 0.01 seconds =========================
   # builder for '/nix/store/c8a58v6aa18zci08q2l53s12ywn8jqhq-python3.6-flickrapi-2.4.0.drv' failed with exit code 5
diff --git a/pkgs/development/python-modules/flufl/lock.nix b/pkgs/development/python-modules/flufl/lock.nix
index ce2ead246f95..40ce524c6675 100644
--- a/pkgs/development/python-modules/flufl/lock.nix
+++ b/pkgs/development/python-modules/flufl/lock.nix
@@ -1,5 +1,5 @@
 { lib, buildPythonPackage, fetchPypi, pytestCheckHook
-, atpublic, psutil, pytestcov, sybil
+, atpublic, psutil, pytest-cov, sybil
 }:
 
 buildPythonPackage rec {
@@ -12,7 +12,7 @@ buildPythonPackage rec {
   };
 
   propagatedBuildInputs = [ atpublic psutil ];
-  checkInputs = [ pytestCheckHook pytestcov sybil ];
+  checkInputs = [ pytestCheckHook pytest-cov sybil ];
 
   # disable code coverage checks for all OS. Upstream does not enforce these
   # checks on Darwin, and code coverage cannot be improved downstream nor is it
diff --git a/pkgs/development/python-modules/graspologic/default.nix b/pkgs/development/python-modules/graspologic/default.nix
index 758f988a2395..37ff849a3cb9 100644
--- a/pkgs/development/python-modules/graspologic/default.nix
+++ b/pkgs/development/python-modules/graspologic/default.nix
@@ -3,7 +3,7 @@
 , isPy27
 , fetchFromGitHub
 , pytestCheckHook
-, pytestcov
+, pytest-cov
 , hyppo
 , matplotlib
 , networkx
@@ -36,7 +36,7 @@ buildPythonPackage rec {
     seaborn
   ];
 
-  checkInputs = [ pytestCheckHook pytestcov ];
+  checkInputs = [ pytestCheckHook pytest-cov ];
   pytestFlagsArray = [ "tests" "--ignore=docs" "--ignore=tests/test_sklearn.py" ];
   disabledTests = [ "gridplot_outputs" ];
 
diff --git a/pkgs/development/python-modules/gunicorn/19.nix b/pkgs/development/python-modules/gunicorn/19.nix
index 7d43ce95a7e3..a7a418afa18c 100644
--- a/pkgs/development/python-modules/gunicorn/19.nix
+++ b/pkgs/development/python-modules/gunicorn/19.nix
@@ -2,7 +2,7 @@
 , coverage
 , mock
 , pytest
-, pytestcov
+, pytest-cov
 , setuptools
 }:
 
@@ -17,7 +17,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ setuptools ];
 
-  checkInputs = [ pytest mock pytestcov coverage ];
+  checkInputs = [ pytest mock pytest-cov coverage ];
 
   prePatch = ''
     substituteInPlace requirements_test.txt --replace "==" ">=" \
diff --git a/pkgs/development/python-modules/gunicorn/default.nix b/pkgs/development/python-modules/gunicorn/default.nix
index c1f36c20566f..ba948a68915a 100644
--- a/pkgs/development/python-modules/gunicorn/default.nix
+++ b/pkgs/development/python-modules/gunicorn/default.nix
@@ -2,7 +2,7 @@
 , coverage
 , mock
 , pytest
-, pytestcov
+, pytest-cov
 , setuptools
 }:
 
@@ -18,7 +18,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ setuptools ];
 
-  checkInputs = [ pytest mock pytestcov coverage ];
+  checkInputs = [ pytest mock pytest-cov coverage ];
 
   prePatch = ''
     substituteInPlace requirements_test.txt --replace "==" ">=" \
diff --git a/pkgs/development/python-modules/hickle/default.nix b/pkgs/development/python-modules/hickle/default.nix
index 1d6d6b39d043..0852ce4d4430 100644
--- a/pkgs/development/python-modules/hickle/default.nix
+++ b/pkgs/development/python-modules/hickle/default.nix
@@ -9,7 +9,7 @@
 , pandas
 , codecov
 , pytest
-, pytestcov
+, pytest-cov
 , pytestrunner
 , coveralls
 , twine
@@ -36,7 +36,7 @@ buildPythonPackage rec {
 
   doCheck = false; # incompatible with latest astropy
   checkInputs = [
-    pytest pytestcov pytestrunner coveralls scipy pandas astropy twine check-manifest codecov
+    pytest pytest-cov pytestrunner coveralls scipy pandas astropy twine check-manifest codecov
   ];
 
   pythonImportsCheck = [ "hickle" ];
diff --git a/pkgs/development/python-modules/httpcore/default.nix b/pkgs/development/python-modules/httpcore/default.nix
index de2f9b00f538..c6c7b3372140 100644
--- a/pkgs/development/python-modules/httpcore/default.nix
+++ b/pkgs/development/python-modules/httpcore/default.nix
@@ -8,7 +8,7 @@
 , pproxy
 , pytest-asyncio
 , pytestCheckHook
-, pytestcov
+, pytest-cov
 , sniffio
 , trio
 , trustme
@@ -38,7 +38,7 @@ buildPythonPackage rec {
     pproxy
     pytest-asyncio
     pytestCheckHook
-    pytestcov
+    pytest-cov
     trio
     trustme
     uvicorn
diff --git a/pkgs/development/python-modules/httpx/default.nix b/pkgs/development/python-modules/httpx/default.nix
index b45c3e85f502..e5db065defcd 100644
--- a/pkgs/development/python-modules/httpx/default.nix
+++ b/pkgs/development/python-modules/httpx/default.nix
@@ -11,7 +11,7 @@
 , pytestCheckHook
 , pytest-asyncio
 , pytest-trio
-, pytestcov
+, pytest-cov
 , trustme
 , uvicorn
 }:
@@ -41,7 +41,7 @@ buildPythonPackage rec {
     pytestCheckHook
     pytest-asyncio
     pytest-trio
-    pytestcov
+    pytest-cov
     trustme
     uvicorn
   ];
diff --git a/pkgs/development/python-modules/hyppo/default.nix b/pkgs/development/python-modules/hyppo/default.nix
index 9fdeca082b2f..8dcca1983ba3 100644
--- a/pkgs/development/python-modules/hyppo/default.nix
+++ b/pkgs/development/python-modules/hyppo/default.nix
@@ -2,7 +2,7 @@
 , buildPythonPackage
 , isPy27
 , fetchFromGitHub
-, pytestCheckHook , pytestcov , numba
+, pytestCheckHook , pytest-cov , numba
 , numpy
 , scikit-learn
 , scipy
@@ -30,7 +30,7 @@ buildPythonPackage rec {
     scipy
   ];
 
-  checkInputs = [ pytestCheckHook pytestcov matplotlib seaborn ];
+  checkInputs = [ pytestCheckHook pytest-cov matplotlib seaborn ];
   disabledTestPaths = [
     "docs"
     "benchmarks"
diff --git a/pkgs/development/python-modules/ibm-cloud-sdk-core/default.nix b/pkgs/development/python-modules/ibm-cloud-sdk-core/default.nix
index a63617ba2a2a..8e7f4832c254 100644
--- a/pkgs/development/python-modules/ibm-cloud-sdk-core/default.nix
+++ b/pkgs/development/python-modules/ibm-cloud-sdk-core/default.nix
@@ -5,7 +5,7 @@
 , pyjwt
 , pylint
 , pytestCheckHook
-, pytestcov
+, pytest-cov
 , python-dateutil
 , requests
 , responses
@@ -25,7 +25,7 @@ buildPythonPackage rec {
     codecov
     pylint
     pytestCheckHook
-    pytestcov
+    pytest-cov
     responses
     tox
   ];
diff --git a/pkgs/development/python-modules/inquirer/default.nix b/pkgs/development/python-modules/inquirer/default.nix
index e55fd8f39d55..84e381f0b8c8 100644
--- a/pkgs/development/python-modules/inquirer/default.nix
+++ b/pkgs/development/python-modules/inquirer/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchFromGitHub, python-editor, readchar, blessed, pytest, pytestcov, pexpect, pytest-mock }:
+{ lib, buildPythonPackage, fetchFromGitHub, python-editor, readchar, blessed, pytest, pytest-cov, pexpect, pytest-mock }:
 
 buildPythonPackage rec {
   pname = "inquirer";
@@ -20,7 +20,7 @@ buildPythonPackage rec {
      --replace "readchar==2.0.1" "readchar>=2.0.0"
   '';
 
-  checkInputs = [ pytest pytestcov pexpect pytest-mock ];
+  checkInputs = [ pytest pytest-cov pexpect pytest-mock ];
 
   checkPhase = ''
     pytest --cov-report=term-missing  --cov inquirer --no-cov-on-fail tests/unit tests/integration
diff --git a/pkgs/development/python-modules/iocapture/default.nix b/pkgs/development/python-modules/iocapture/default.nix
index 0f0466c8b3eb..cc56f8d0bdea 100644
--- a/pkgs/development/python-modules/iocapture/default.nix
+++ b/pkgs/development/python-modules/iocapture/default.nix
@@ -3,7 +3,7 @@
 , fetchPypi
 , flexmock
 , pytest
-, pytestcov
+, pytest-cov
 , six
 }:
 
@@ -19,7 +19,7 @@ buildPythonPackage rec {
   checkInputs = [
     flexmock
     pytest
-    pytestcov
+    pytest-cov
     six
   ];
 
diff --git a/pkgs/development/python-modules/ipydatawidgets/default.nix b/pkgs/development/python-modules/ipydatawidgets/default.nix
index a0efa9b575db..3f8811f4f3b4 100644
--- a/pkgs/development/python-modules/ipydatawidgets/default.nix
+++ b/pkgs/development/python-modules/ipydatawidgets/default.nix
@@ -3,7 +3,7 @@
 , fetchPypi
 , isPy27
 , pytest
-, pytestcov
+, pytest-cov
 , nbval
 , ipywidgets
 , numpy
@@ -29,7 +29,7 @@ buildPythonPackage rec {
     traittypes
   ];
 
-  checkInputs = [ pytest pytestcov nbval ];
+  checkInputs = [ pytest pytest-cov nbval ];
 
   checkPhase = "pytest ipydatawidgets/tests";
 
diff --git a/pkgs/development/python-modules/jedi/default.nix b/pkgs/development/python-modules/jedi/default.nix
index 305b9f6c6b6b..0dba5e8f192c 100644
--- a/pkgs/development/python-modules/jedi/default.nix
+++ b/pkgs/development/python-modules/jedi/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchFromGitHub, fetchPypi, pytest, glibcLocales, tox, pytestcov, parso }:
+{ lib, buildPythonPackage, fetchFromGitHub, fetchPypi, pytest, glibcLocales, tox, pytest-cov, parso }:
 
 buildPythonPackage rec {
   pname = "jedi";
@@ -14,7 +14,7 @@ buildPythonPackage rec {
     fetchSubmodules = true;
   };
 
-  checkInputs = [ pytest glibcLocales tox pytestcov ];
+  checkInputs = [ pytest glibcLocales tox pytest-cov ];
 
   propagatedBuildInputs = [ parso ];
 
diff --git a/pkgs/development/python-modules/jira/default.nix b/pkgs/development/python-modules/jira/default.nix
index 78aaadf690e2..7507789fd533 100644
--- a/pkgs/development/python-modules/jira/default.nix
+++ b/pkgs/development/python-modules/jira/default.nix
@@ -1,5 +1,5 @@
 { lib, buildPythonPackage, fetchPypi, isPy3k
-, pytest, pytestrunner, pbr, glibcLocales , pytestcov
+, pytest, pytestrunner, pbr, glibcLocales , pytest-cov
 , requests, requests_oauthlib, requests_toolbelt, defusedxml
 , ipython
 }:
@@ -15,7 +15,7 @@ buildPythonPackage rec {
     sha256 = "e2a94adff98e45b29ded030adc76103eab34fa7d4d57303f211f572bedba0e93";
   };
 
-  buildInputs = [ glibcLocales pytest pytestcov pytestrunner pbr ];
+  buildInputs = [ glibcLocales pytest pytest-cov pytestrunner pbr ];
   propagatedBuildInputs = [ requests requests_oauthlib requests_toolbelt defusedxml pbr ipython ];
 
   # impure tests because of connectivity attempts to jira servers
diff --git a/pkgs/development/python-modules/jsonlines/default.nix b/pkgs/development/python-modules/jsonlines/default.nix
index 82ddb3bf23a7..d16fa89a97c4 100644
--- a/pkgs/development/python-modules/jsonlines/default.nix
+++ b/pkgs/development/python-modules/jsonlines/default.nix
@@ -1,5 +1,5 @@
 { lib, fetchFromGitHub, buildPythonPackage, six
-, flake8, pep8-naming, pytest, pytestcov }:
+, flake8, pep8-naming, pytest, pytest-cov }:
 
 buildPythonPackage rec {
   pname = "jsonlines";
@@ -14,7 +14,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ six ];
 
-  checkInputs = [ flake8 pep8-naming pytest pytestcov ];
+  checkInputs = [ flake8 pep8-naming pytest pytest-cov ];
   checkPhase = ''
     pytest
   '';
diff --git a/pkgs/development/python-modules/jupyterlab_server/default.nix b/pkgs/development/python-modules/jupyterlab_server/default.nix
index 7f1a729b5b1a..f3f2b9dc32c1 100644
--- a/pkgs/development/python-modules/jupyterlab_server/default.nix
+++ b/pkgs/development/python-modules/jupyterlab_server/default.nix
@@ -10,7 +10,7 @@
 , jupyter_server
 , openapi-core
 , pytest-tornasync
-, pytestcov
+, pytest-cov
 , ruamel-yaml
 , strict-rfc3339
 }:
diff --git a/pkgs/development/python-modules/keras/default.nix b/pkgs/development/python-modules/keras/default.nix
index e90dd1a806aa..b6ac0a1fa132 100644
--- a/pkgs/development/python-modules/keras/default.nix
+++ b/pkgs/development/python-modules/keras/default.nix
@@ -1,5 +1,5 @@
 { lib, buildPythonPackage, fetchPypi
-, pytest, pytestcov, pytest_xdist
+, pytest, pytest-cov, pytest_xdist
 , six, numpy, scipy, pyyaml, h5py
 , keras-applications, keras-preprocessing
 }:
@@ -15,7 +15,7 @@ buildPythonPackage rec {
 
   checkInputs = [
     pytest
-    pytestcov
+    pytest-cov
     pytest_xdist
   ];
 
diff --git a/pkgs/development/python-modules/libais/default.nix b/pkgs/development/python-modules/libais/default.nix
index 33710c6682dc..36918a484c3e 100644
--- a/pkgs/development/python-modules/libais/default.nix
+++ b/pkgs/development/python-modules/libais/default.nix
@@ -1,5 +1,5 @@
 { lib, buildPythonPackage, fetchPypi,
-  six, pytest, pytestrunner, pytestcov, coverage
+  six, pytest, pytestrunner, pytest-cov, coverage
 }:
 buildPythonPackage rec {
   pname = "libais";
@@ -13,7 +13,7 @@ buildPythonPackage rec {
   # data files missing
   doCheck = false;
 
-  checkInputs = [ pytest pytestrunner pytestcov coverage ];
+  checkInputs = [ pytest pytestrunner pytest-cov coverage ];
   propagatedBuildInputs = [ six ];
 
   meta = with lib; {
diff --git a/pkgs/development/python-modules/m3u8/default.nix b/pkgs/development/python-modules/m3u8/default.nix
index 01ff1458c0fa..decad482bef1 100644
--- a/pkgs/development/python-modules/m3u8/default.nix
+++ b/pkgs/development/python-modules/m3u8/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, python, fetchFromGitHub, requests, iso8601, bottle, pytest, pytestcov }:
+{ lib, buildPythonPackage, python, fetchFromGitHub, requests, iso8601, bottle, pytest, pytest-cov }:
 
 buildPythonPackage rec {
   pname = "m3u8";
@@ -11,7 +11,7 @@ buildPythonPackage rec {
     sha256 = "0cmg993icpsa1b19kljxvjwhs167bsqrs0ad4wnwsi8qq6na5d4p";
   };
 
-  checkInputs = [ bottle pytest pytestcov ];
+  checkInputs = [ bottle pytest pytest-cov ];
 
   checkPhase = ''
     pytest tests/test_{parser,model,variant_m3u8}.py
diff --git a/pkgs/development/python-modules/markdownsuperscript/default.nix b/pkgs/development/python-modules/markdownsuperscript/default.nix
index 94cfb637a15e..a7876a75e495 100644
--- a/pkgs/development/python-modules/markdownsuperscript/default.nix
+++ b/pkgs/development/python-modules/markdownsuperscript/default.nix
@@ -1,5 +1,5 @@
 { lib, buildPythonPackage, fetchPypi, markdown,
-  pytest, pytestrunner, pytestcov, coverage }:
+  pytest, pytestrunner, pytest-cov, coverage }:
 
 buildPythonPackage rec {
   pname = "MarkdownSuperscript";
@@ -20,7 +20,7 @@ buildPythonPackage rec {
     sed 's/=.*//' -i requirements/*.txt
   '';
 
-  checkInputs = [ pytest pytestrunner pytestcov coverage ];
+  checkInputs = [ pytest pytestrunner pytest-cov coverage ];
 
   meta = with lib; {
     description = "An extension to the Python Markdown package enabling superscript text";
diff --git a/pkgs/development/python-modules/marshmallow-polyfield/default.nix b/pkgs/development/python-modules/marshmallow-polyfield/default.nix
index e3b629b3034e..aa2784cd1dbb 100644
--- a/pkgs/development/python-modules/marshmallow-polyfield/default.nix
+++ b/pkgs/development/python-modules/marshmallow-polyfield/default.nix
@@ -4,7 +4,7 @@
 , marshmallow
   # Check Inputs
 , pytestCheckHook
-, pytestcov
+, pytest-cov
 }:
 
 buildPythonPackage rec {
@@ -23,7 +23,7 @@ buildPythonPackage rec {
   ];
 
   # setuptools check can run, but won't find tests
-  checkInputs = [ pytestCheckHook pytestcov ];
+  checkInputs = [ pytestCheckHook pytest-cov ];
 
   meta = with lib; {
     description = "An unofficial extension to Marshmallow to allow for polymorphic fields";
diff --git a/pkgs/development/python-modules/mne-python/default.nix b/pkgs/development/python-modules/mne-python/default.nix
index 77e6f9c24685..2dfe06d51770 100644
--- a/pkgs/development/python-modules/mne-python/default.nix
+++ b/pkgs/development/python-modules/mne-python/default.nix
@@ -5,7 +5,7 @@
 , numpy
 , scipy
 , pytestCheckHook
-, pytestcov
+, pytest-cov
 , pytest-timeout
 , h5py
 , matplotlib
@@ -34,7 +34,7 @@ buildPythonPackage rec {
   doCheck = false;
   checkInputs = [
     pytestCheckHook
-    pytestcov
+    pytest-cov
     pytest-timeout
     h5py
     matplotlib
diff --git a/pkgs/development/python-modules/multidict/default.nix b/pkgs/development/python-modules/multidict/default.nix
index 555011a314d9..10cbc58eb8d8 100644
--- a/pkgs/development/python-modules/multidict/default.nix
+++ b/pkgs/development/python-modules/multidict/default.nix
@@ -1,7 +1,7 @@
 { lib
 , fetchPypi
 , buildPythonPackage
-, pytestCheckHook, pytestrunner, pytestcov
+, pytestCheckHook, pytestrunner, pytest-cov
 , isPy3k
 }:
 
@@ -14,7 +14,7 @@ buildPythonPackage rec {
     sha256 = "25b4e5f22d3a37ddf3effc0710ba692cfc792c2b9edfb9c05aefe823256e84d5";
   };
 
-  checkInputs = [ pytestCheckHook pytestrunner pytestcov ];
+  checkInputs = [ pytestCheckHook pytestrunner pytest-cov ];
 
   disabled = !isPy3k;
 
diff --git a/pkgs/development/python-modules/mwclient/default.nix b/pkgs/development/python-modules/mwclient/default.nix
index 2eed1eefeec8..bffc4247632d 100644
--- a/pkgs/development/python-modules/mwclient/default.nix
+++ b/pkgs/development/python-modules/mwclient/default.nix
@@ -1,6 +1,6 @@
 { lib, buildPythonPackage, fetchFromGitHub
 , requests, requests_oauthlib, six
-, pytest, pytestcache, pytestcov, responses, mock
+, pytest, pytestcache, pytest-cov, responses, mock
 }:
 
 buildPythonPackage rec {
@@ -14,7 +14,7 @@ buildPythonPackage rec {
     sha256 = "120snnsh9n5svfwkyj1w9jrxf99jnqm0jk282yypd3lpyca1l9hj";
   };
 
-  checkInputs = [ pytest pytestcache pytestcov responses mock ];
+  checkInputs = [ pytest pytestcache pytest-cov responses mock ];
 
   propagatedBuildInputs = [ requests requests_oauthlib six ];
 
diff --git a/pkgs/development/python-modules/natsort/default.nix b/pkgs/development/python-modules/natsort/default.nix
index d475f21fcb51..e7a2a6808a8a 100644
--- a/pkgs/development/python-modules/natsort/default.nix
+++ b/pkgs/development/python-modules/natsort/default.nix
@@ -3,7 +3,7 @@
 , pythonOlder
 , fetchPypi
 , pytest
-, pytestcov
+, pytest-cov
 , pytest-mock
 , hypothesis
 , glibcLocales
@@ -17,7 +17,7 @@ buildPythonPackage rec {
 
   checkInputs = [
     pytest
-    pytestcov
+    pytest-cov
     pytest-mock
     hypothesis
     glibcLocales
diff --git a/pkgs/development/python-modules/nbdime/default.nix b/pkgs/development/python-modules/nbdime/default.nix
index 221915efca03..96fc94d43e85 100644
--- a/pkgs/development/python-modules/nbdime/default.nix
+++ b/pkgs/development/python-modules/nbdime/default.nix
@@ -5,7 +5,7 @@
 , attrs
 , py
 , setuptools
-, pytestcov
+, pytest-cov
 , pytest-timeout
 , pytest-tornado
 , mock
@@ -34,7 +34,7 @@ buildPythonPackage rec {
 
   checkInputs = [
     hypothesis
-    pytestcov
+    pytest-cov
     pytest-timeout
     pytest-tornado
     jsonschema
diff --git a/pkgs/development/python-modules/nbval/default.nix b/pkgs/development/python-modules/nbval/default.nix
index b9a336f7fbe9..176986492555 100644
--- a/pkgs/development/python-modules/nbval/default.nix
+++ b/pkgs/development/python-modules/nbval/default.nix
@@ -11,7 +11,7 @@
 , glibcLocales
 , matplotlib
 , sympy
-, pytestcov
+, pytest-cov
 }:
 
 buildPythonPackage rec {
@@ -27,7 +27,7 @@ buildPythonPackage rec {
     pytestCheckHook
     matplotlib
     sympy
-    pytestcov
+    pytest-cov
   ];
 
   buildInputs = [ glibcLocales ];
diff --git a/pkgs/development/python-modules/nipype/default.nix b/pkgs/development/python-modules/nipype/default.nix
index 078c455a6373..7ecba3b7d3b1 100644
--- a/pkgs/development/python-modules/nipype/default.nix
+++ b/pkgs/development/python-modules/nipype/default.nix
@@ -26,7 +26,7 @@
 , simplejson
 , traits
 , xvfbwrapper
-, pytestcov
+, pytest-cov
 , codecov
 , sphinx
 # other dependencies
@@ -94,7 +94,7 @@ buildPythonPackage rec {
     pytest
     pytest-forked
     pytest_xdist
-    pytestcov
+    pytest-cov
     which
   ];
 
diff --git a/pkgs/development/python-modules/nix-prefetch-github/default.nix b/pkgs/development/python-modules/nix-prefetch-github/default.nix
index 597b6814281f..0821e0b763d0 100644
--- a/pkgs/development/python-modules/nix-prefetch-github/default.nix
+++ b/pkgs/development/python-modules/nix-prefetch-github/default.nix
@@ -6,7 +6,7 @@
 , effect
 , git
 , pytestCheckHook
-, pytestcov
+, pytest-cov
 , pythonOlder
 }:
 
@@ -29,7 +29,7 @@ buildPythonPackage rec {
     effect
   ];
 
-  checkInputs = [ pytestCheckHook pytestcov git ];
+  checkInputs = [ pytestCheckHook pytest-cov git ];
 
   # ignore tests which are impure
   disabledTests = [ "network" "requires_nix_build" ];
diff --git a/pkgs/development/python-modules/nplusone/default.nix b/pkgs/development/python-modules/nplusone/default.nix
index c2f484cb3a92..7d29428d93e6 100644
--- a/pkgs/development/python-modules/nplusone/default.nix
+++ b/pkgs/development/python-modules/nplusone/default.nix
@@ -1,5 +1,5 @@
 { blinker, buildPythonPackage, fetchFromGitHub, lib, isPy27, six, mock, pytest
-, webtest, pytestcov, pytest-django, pytest-pythonpath, flake8, sqlalchemy
+, webtest, pytest-cov, pytest-django, pytest-pythonpath, flake8, sqlalchemy
 , flask_sqlalchemy, peewee }:
 
 buildPythonPackage rec {
@@ -31,7 +31,7 @@ buildPythonPackage rec {
     mock
     pytest
     webtest
-    pytestcov
+    pytest-cov
     pytest-django
     pytest-pythonpath
     flake8
diff --git a/pkgs/development/python-modules/openapi-schema-validator/default.nix b/pkgs/development/python-modules/openapi-schema-validator/default.nix
index f09a42ddd69b..18e357c1f2d2 100644
--- a/pkgs/development/python-modules/openapi-schema-validator/default.nix
+++ b/pkgs/development/python-modules/openapi-schema-validator/default.nix
@@ -5,7 +5,7 @@
 , isodate
 , jsonschema
 , pytest-flake8
-, pytestcov
+, pytest-cov
 , rfc3339-validator
 , six
 , strict-rfc3339
@@ -22,7 +22,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ isodate jsonschema six strict-rfc3339 rfc3339-validator ];
 
-  checkInputs = [ pytestCheckHook pytestcov pytest-flake8 ];
+  checkInputs = [ pytestCheckHook pytest-cov pytest-flake8 ];
   pythonImportsCheck = [ "openapi_schema_validator" ];
 
   meta = with lib; {
diff --git a/pkgs/development/python-modules/openapi-spec-validator/default.nix b/pkgs/development/python-modules/openapi-spec-validator/default.nix
index b431ef507525..4e61a86a5013 100644
--- a/pkgs/development/python-modules/openapi-spec-validator/default.nix
+++ b/pkgs/development/python-modules/openapi-spec-validator/default.nix
@@ -1,6 +1,6 @@
 { lib, buildPythonPackage, isPy27, fetchPypi
 , jsonschema, openapi-schema-validator, pyyaml, six, pathlib
-, mock, pytest, pytestcov, pytest-flake8, tox, setuptools }:
+, mock, pytest, pytest-cov, pytest-flake8, tox, setuptools }:
 
 buildPythonPackage rec {
   pname = "openapi-spec-validator";
@@ -14,7 +14,7 @@ buildPythonPackage rec {
   propagatedBuildInputs = [ jsonschema openapi-schema-validator pyyaml six setuptools ]
     ++ (lib.optionals (isPy27) [ pathlib ]);
 
-  checkInputs = [ mock pytest pytestcov pytest-flake8 tox ];
+  checkInputs = [ mock pytest pytest-cov pytest-flake8 tox ];
 
   meta = with lib; {
     homepage = "https://github.com/p1c2u/openapi-spec-validator";
diff --git a/pkgs/development/python-modules/orm/default.nix b/pkgs/development/python-modules/orm/default.nix
index 872a54076125..f2dd196be942 100644
--- a/pkgs/development/python-modules/orm/default.nix
+++ b/pkgs/development/python-modules/orm/default.nix
@@ -5,7 +5,7 @@
 , typesystem
 , aiosqlite
 , pytestCheckHook
-, pytestcov
+, pytest-cov
 , typing-extensions
 }:
 
@@ -28,7 +28,7 @@ buildPythonPackage rec {
   checkInputs = [
     aiosqlite
     pytestCheckHook
-    pytestcov
+    pytest-cov
     typing-extensions
   ];
 
diff --git a/pkgs/development/python-modules/papermill/default.nix b/pkgs/development/python-modules/papermill/default.nix
index 9af09d569466..5b9a6d8e968b 100644
--- a/pkgs/development/python-modules/papermill/default.nix
+++ b/pkgs/development/python-modules/papermill/default.nix
@@ -19,7 +19,7 @@
 , backports_tempfile
 , isPy27
 , pytest
-, pytestcov
+, pytest-cov
 , pytest-mock
 }:
 
@@ -54,7 +54,7 @@ buildPythonPackage rec {
 
   checkInputs = [
     pytest
-    pytestcov
+    pytest-cov
     pytest-mock
   ];
 
diff --git a/pkgs/development/python-modules/papis/default.nix b/pkgs/development/python-modules/papis/default.nix
index 3e7c6ae00116..72eb9a185d7a 100644
--- a/pkgs/development/python-modules/papis/default.nix
+++ b/pkgs/development/python-modules/papis/default.nix
@@ -3,7 +3,7 @@
 , pyyaml, chardet, beautifulsoup4, colorama, bibtexparser
 , click, python-slugify, habanero, isbnlib, typing-extensions
 , prompt_toolkit, pygments, stevedore, tqdm, lxml
-, python-doi, isPy3k, pytestcov
+, python-doi, isPy3k, pytest-cov
 #, optional, dependencies
 , whoosh, pytest
 , stdenv
@@ -43,7 +43,7 @@ buildPythonPackage rec {
   doCheck = !stdenv.isDarwin;
 
   checkInputs = ([
-    pytest pytestcov
+    pytest pytest-cov
   ]) ++ [
     xdg-utils
   ];
diff --git a/pkgs/development/python-modules/periodictable/default.nix b/pkgs/development/python-modules/periodictable/default.nix
index 783d85b6c08c..7c08468c03f4 100644
--- a/pkgs/development/python-modules/periodictable/default.nix
+++ b/pkgs/development/python-modules/periodictable/default.nix
@@ -1,4 +1,4 @@
-{lib, fetchPypi, buildPythonPackage, numpy, pyparsing, pytestcov, pytestCheckHook }:
+{lib, fetchPypi, buildPythonPackage, numpy, pyparsing, pytest-cov, pytestCheckHook }:
 
 buildPythonPackage rec {
   pname = "periodictable";
@@ -11,7 +11,7 @@ buildPythonPackage rec {
     sha256 = "52e925220005c20e97601e7b04ad6cebc271680947ab9adcbb1a796ddbaa0f23";
   };
 
-  checkInputs = [ pytestcov pytestCheckHook ];
+  checkInputs = [ pytest-cov pytestCheckHook ];
 
   meta = {
     homepage = "https://www.reflectometry.org/danse/software.html";
diff --git a/pkgs/development/python-modules/pglast/default.nix b/pkgs/development/python-modules/pglast/default.nix
index 6a0f8940788c..8184c6d0d18a 100644
--- a/pkgs/development/python-modules/pglast/default.nix
+++ b/pkgs/development/python-modules/pglast/default.nix
@@ -3,7 +3,7 @@
 , fetchFromGitHub
 , isPy3k
 , setuptools
-, pytestcov
+, pytest-cov
 , pytest
 }:
 
@@ -24,7 +24,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ setuptools ];
 
-  checkInputs = [ pytest pytestcov ];
+  checkInputs = [ pytest pytest-cov ];
 
   pythonImportsCheck = [ "pglast" ];
 
diff --git a/pkgs/development/python-modules/phonemizer/default.nix b/pkgs/development/python-modules/phonemizer/default.nix
index 8eab09046dc2..54a816643818 100644
--- a/pkgs/development/python-modules/phonemizer/default.nix
+++ b/pkgs/development/python-modules/phonemizer/default.nix
@@ -7,7 +7,7 @@
 , attrs
 , espeak-ng
 , pytestCheckHook
-, pytestcov
+, pytest-cov
 }:
 
 buildPythonApplication rec {
@@ -45,7 +45,7 @@ buildPythonApplication rec {
 
   checkInputs = [
     pytestCheckHook
-    pytestcov
+    pytest-cov
   ];
 
   # We tried to package festvial, but were unable to get the backend running,
diff --git a/pkgs/development/python-modules/plaster-pastedeploy/default.nix b/pkgs/development/python-modules/plaster-pastedeploy/default.nix
index 262bdceb5db7..75bc033807f6 100644
--- a/pkgs/development/python-modules/plaster-pastedeploy/default.nix
+++ b/pkgs/development/python-modules/plaster-pastedeploy/default.nix
@@ -1,6 +1,6 @@
 { buildPythonPackage, fetchPypi, fetchpatch
 , plaster, PasteDeploy
-, pytest, pytestcov
+, pytest, pytest-cov
 }:
 
 buildPythonPackage rec {
@@ -26,5 +26,5 @@ buildPythonPackage rec {
   '';
 
   propagatedBuildInputs = [ plaster PasteDeploy ];
-  checkInputs = [ pytest pytestcov ];
+  checkInputs = [ pytest pytest-cov ];
 }
diff --git a/pkgs/development/python-modules/plaster/default.nix b/pkgs/development/python-modules/plaster/default.nix
index 82aaebb10039..749ffdb7f321 100644
--- a/pkgs/development/python-modules/plaster/default.nix
+++ b/pkgs/development/python-modules/plaster/default.nix
@@ -1,5 +1,5 @@
 { buildPythonPackage, fetchPypi
-, pytest, pytestcov
+, pytest, pytest-cov
 }:
 
 buildPythonPackage rec {
@@ -15,5 +15,5 @@ buildPythonPackage rec {
     py.test
   '';
 
-  checkInputs = [ pytest pytestcov ];
+  checkInputs = [ pytest pytest-cov ];
 }
diff --git a/pkgs/development/python-modules/poetry/default.nix b/pkgs/development/python-modules/poetry/default.nix
index c37c428805eb..7287797ef331 100644
--- a/pkgs/development/python-modules/poetry/default.nix
+++ b/pkgs/development/python-modules/poetry/default.nix
@@ -13,7 +13,7 @@
 , pkginfo
 , poetry-core
 , pytestCheckHook
-, pytestcov
+, pytest-cov
 , pytest-mock
 , requests
 , requests-toolbelt
@@ -71,7 +71,7 @@ buildPythonPackage rec {
     "$out/bin/poetry" completions fish > "$out/share/fish/vendor_completions.d/poetry.fish"
   '';
 
-  checkInputs = [ pytestCheckHook httpretty pytest-mock pytestcov ];
+  checkInputs = [ pytestCheckHook httpretty pytest-mock pytest-cov ];
   preCheck = "export HOME=$TMPDIR";
   disabledTests = [
     # touches network
diff --git a/pkgs/development/python-modules/portalocker/default.nix b/pkgs/development/python-modules/portalocker/default.nix
index 7b4fc177bc11..8b642240f9cb 100644
--- a/pkgs/development/python-modules/portalocker/default.nix
+++ b/pkgs/development/python-modules/portalocker/default.nix
@@ -1,6 +1,6 @@
 { lib, buildPythonPackage, fetchPypi
 , pytestCheckHook
-, pytestcov
+, pytest-cov
 , pytest-flake8
 , pytest-mypy
 , redis
diff --git a/pkgs/development/python-modules/portend/default.nix b/pkgs/development/python-modules/portend/default.nix
index da27dd3cd922..d48f387400e4 100644
--- a/pkgs/development/python-modules/portend/default.nix
+++ b/pkgs/development/python-modules/portend/default.nix
@@ -1,5 +1,5 @@
 { lib, buildPythonPackage, fetchPypi
-, pytest, setuptools-scm, tempora, pytest-black, pytestcov }:
+, pytest, setuptools-scm, tempora, pytest-black, pytest-cov }:
 
 buildPythonPackage rec {
   pname = "portend";
@@ -18,7 +18,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ tempora ];
 
-  checkInputs = [ pytest pytest-black pytestcov ];
+  checkInputs = [ pytest pytest-black pytest-cov ];
 
   checkPhase = ''
     py.test --deselect=test_portend.py::TestChecker::test_check_port_listening
diff --git a/pkgs/development/python-modules/prance/default.nix b/pkgs/development/python-modules/prance/default.nix
index b13808f1a9db..783c936cf2d1 100644
--- a/pkgs/development/python-modules/prance/default.nix
+++ b/pkgs/development/python-modules/prance/default.nix
@@ -7,7 +7,7 @@
 , six
 , semver
 , pytestCheckHook
-, pytestcov
+, pytest-cov
 , pytestrunner
 , openapi-spec-validator
 }:
@@ -35,7 +35,7 @@ buildPythonPackage rec {
 
   checkInputs = [
     pytestCheckHook
-    pytestcov
+    pytest-cov
     openapi-spec-validator
   ];
 
diff --git a/pkgs/development/python-modules/property-manager/default.nix b/pkgs/development/python-modules/property-manager/default.nix
index ad47163e4842..f50f9625fd96 100644
--- a/pkgs/development/python-modules/property-manager/default.nix
+++ b/pkgs/development/python-modules/property-manager/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchFromGitHub, humanfriendly, verboselogs, coloredlogs, pytest, pytestcov }:
+{ lib, buildPythonPackage, fetchFromGitHub, humanfriendly, verboselogs, coloredlogs, pytest, pytest-cov }:
 
 buildPythonPackage rec {
   pname = "property-manager";
@@ -12,7 +12,7 @@ buildPythonPackage rec {
   };
 
   propagatedBuildInputs = [ coloredlogs humanfriendly verboselogs ];
-  checkInputs = [ pytest pytestcov ];
+  checkInputs = [ pytest pytest-cov ];
 
   meta = with lib; {
     description = "Useful property variants for Python programming";
diff --git a/pkgs/development/python-modules/psautohint/default.nix b/pkgs/development/python-modules/psautohint/default.nix
index 01b249e1c77f..3a720bf328f3 100644
--- a/pkgs/development/python-modules/psautohint/default.nix
+++ b/pkgs/development/python-modules/psautohint/default.nix
@@ -2,7 +2,7 @@
 , fonttools
 , lxml, fs # for fonttools extras
 , setuptools-scm
-, pytestCheckHook, pytestcov, pytest_xdist
+, pytestCheckHook, pytest-cov, pytest_xdist
 }:
 
 buildPythonPackage rec {
@@ -31,7 +31,7 @@ buildPythonPackage rec {
 
   checkInputs = [
     pytestCheckHook
-    pytestcov
+    pytest-cov
     pytest_xdist
   ];
   disabledTests = [
diff --git a/pkgs/development/python-modules/py-air-control-exporter/default.nix b/pkgs/development/python-modules/py-air-control-exporter/default.nix
index 2f494dcb7002..c333c3ea4fd1 100644
--- a/pkgs/development/python-modules/py-air-control-exporter/default.nix
+++ b/pkgs/development/python-modules/py-air-control-exporter/default.nix
@@ -1,5 +1,5 @@
 { buildPythonPackage, fetchPypi, flask, isPy27, lib, nixosTests
-, prometheus_client, py-air-control, pytestCheckHook, pytestcov, pytestrunner
+, prometheus_client, py-air-control, pytestCheckHook, pytest-cov, pytestrunner
 , setuptools-scm }:
 
 buildPythonPackage rec {
@@ -13,7 +13,7 @@ buildPythonPackage rec {
   };
 
   nativeBuildInputs = [ setuptools-scm ];
-  checkInputs = [ pytestCheckHook pytestcov pytestrunner ];
+  checkInputs = [ pytestCheckHook pytest-cov pytestrunner ];
   propagatedBuildInputs = [ flask prometheus_client py-air-control ];
 
   passthru.tests = { inherit (nixosTests.prometheus-exporters) py-air-control; };
diff --git a/pkgs/development/python-modules/pycategories/default.nix b/pkgs/development/python-modules/pycategories/default.nix
index 55f30f9e55a9..48686225e1ef 100644
--- a/pkgs/development/python-modules/pycategories/default.nix
+++ b/pkgs/development/python-modules/pycategories/default.nix
@@ -1,6 +1,6 @@
 { buildPythonPackage
 , callPackage
-, pytestcov
+, pytest-cov
 , fetchPypi
 , lib
 , pytest
@@ -24,7 +24,7 @@ buildPythonPackage rec {
   # and shouldn't be used in production code
   propagatedBuildInputs = [ (callPackage ./infix.nix { }) ];
 
-  checkInputs = [ pytest pytestcov ];
+  checkInputs = [ pytest pytest-cov ];
 
   meta = with lib; {
     homepage = "https://gitlab.com/danielhones/pycategories";
diff --git a/pkgs/development/python-modules/pyls-mypy/default.nix b/pkgs/development/python-modules/pyls-mypy/default.nix
index f919ac21cb7b..acce4469eed4 100644
--- a/pkgs/development/python-modules/pyls-mypy/default.nix
+++ b/pkgs/development/python-modules/pyls-mypy/default.nix
@@ -1,6 +1,6 @@
 { lib, buildPythonPackage, fetchFromGitHub, isPy27
 , future, python-language-server, mypy, configparser
-, pytestCheckHook, mock, pytestcov, coverage
+, pytestCheckHook, mock, pytest-cov, coverage
 , fetchpatch
 }:
 
@@ -34,7 +34,7 @@ buildPythonPackage rec {
     })
   ];
 
-  checkInputs = [ mock pytestcov coverage pytestCheckHook ];
+  checkInputs = [ mock pytest-cov coverage pytestCheckHook ];
 
   propagatedBuildInputs = [
     mypy python-language-server configparser
diff --git a/pkgs/development/python-modules/pylti/default.nix b/pkgs/development/python-modules/pylti/default.nix
index a6778a4aa7e8..80fa5bff3200 100644
--- a/pkgs/development/python-modules/pylti/default.nix
+++ b/pkgs/development/python-modules/pylti/default.nix
@@ -11,7 +11,7 @@
 , pyflakes
 , pytest
 , pytestcache
-, pytestcov
+, pytest-cov
 , covCore
 , pytest-flakes
 , sphinx
@@ -33,7 +33,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ httplib2 oauth oauth2 semantic-version ];
   checkInputs = [
-    flask httpretty oauthlib pyflakes pytest pytestcache pytestcov covCore
+    flask httpretty oauthlib pyflakes pytest pytestcache pytest-cov covCore
     pytest-flakes sphinx mock chalice
   ];
 
diff --git a/pkgs/development/python-modules/pytest-astropy-header/default.nix b/pkgs/development/python-modules/pytest-astropy-header/default.nix
index 963e621986cf..acc555035822 100644
--- a/pkgs/development/python-modules/pytest-astropy-header/default.nix
+++ b/pkgs/development/python-modules/pytest-astropy-header/default.nix
@@ -3,7 +3,7 @@
 , fetchPypi
 , fetchpatch
 , pytest
-, pytestcov
+, pytest-cov
 , pytestCheckHook
 , numpy
 , astropy
@@ -37,7 +37,7 @@ buildPythonPackage rec {
 
   checkInputs = [
     pytestCheckHook
-    pytestcov
+    pytest-cov
     numpy
     scipy
     h5py
diff --git a/pkgs/development/python-modules/pytest-factoryboy/default.nix b/pkgs/development/python-modules/pytest-factoryboy/default.nix
index 39d6bc127e6b..eea6c61a7274 100644
--- a/pkgs/development/python-modules/pytest-factoryboy/default.nix
+++ b/pkgs/development/python-modules/pytest-factoryboy/default.nix
@@ -7,7 +7,7 @@
 , pytest
 , pytestcache
 , pytestCheckHook
-, pytestcov
+, pytest-cov
 }:
 
 buildPythonPackage rec {
@@ -32,7 +32,7 @@ buildPythonPackage rec {
     mock
     pytestCheckHook
     pytestcache
-    pytestcov
+    pytest-cov
   ];
 
   pytestFlagsArray = [ "--ignore=docs" ];
diff --git a/pkgs/development/python-modules/pytest-filter-subpackage/default.nix b/pkgs/development/python-modules/pytest-filter-subpackage/default.nix
index 148b2c7185fb..df152eaa5eca 100644
--- a/pkgs/development/python-modules/pytest-filter-subpackage/default.nix
+++ b/pkgs/development/python-modules/pytest-filter-subpackage/default.nix
@@ -2,7 +2,7 @@
 , buildPythonPackage
 , fetchPypi
 , pytest
-, pytestcov
+, pytest-cov
 , pytest-doctestplus
 , pytestCheckHook
 , setuptools-scm
@@ -25,7 +25,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [
     pytest-doctestplus
-    pytestcov
+    pytest-cov
     pytestCheckHook
   ];
 
diff --git a/pkgs/development/python-modules/pytest-shutil/default.nix b/pkgs/development/python-modules/pytest-shutil/default.nix
index 0483063c53bc..e43a837d6aa4 100644
--- a/pkgs/development/python-modules/pytest-shutil/default.nix
+++ b/pkgs/development/python-modules/pytest-shutil/default.nix
@@ -1,5 +1,5 @@
 { lib, isPyPy, buildPythonPackage, fetchPypi
-, pytest, cmdline, pytestcov, coverage, setuptools-git, mock, pathpy, execnet
+, pytest, cmdline, pytest-cov, coverage, setuptools-git, mock, pathpy, execnet
 , contextlib2, termcolor }:
 
 buildPythonPackage rec {
@@ -13,7 +13,7 @@ buildPythonPackage rec {
 
   buildInputs = [ pytest ];
   checkInputs = [ cmdline pytest ];
-  propagatedBuildInputs = [ pytestcov coverage setuptools-git mock pathpy execnet contextlib2 termcolor ];
+  propagatedBuildInputs = [ pytest-cov coverage setuptools-git mock pathpy execnet contextlib2 termcolor ];
 
   checkPhase = ''
     py.test ${lib.optionalString isPyPy "-k'not (test_run or test_run_integration)'"}
diff --git a/pkgs/development/python-modules/pytest-timeout/default.nix b/pkgs/development/python-modules/pytest-timeout/default.nix
index 8c59b6ee2c9c..40f67eb0b0ba 100644
--- a/pkgs/development/python-modules/pytest-timeout/default.nix
+++ b/pkgs/development/python-modules/pytest-timeout/default.nix
@@ -4,7 +4,7 @@
 , pytest
 , pytestCheckHook
 , pexpect
-, pytestcov
+, pytest-cov
 }:
 
 buildPythonPackage rec {
@@ -18,7 +18,7 @@ buildPythonPackage rec {
 
   buildInputs = [ pytest ];
 
-  checkInputs = [ pytestCheckHook pexpect pytestcov ];
+  checkInputs = [ pytestCheckHook pexpect pytest-cov ];
 
   disabledTests = [
     "test_suppresses_timeout_when_pdb_is_entered"
diff --git a/pkgs/development/python-modules/pytest-virtualenv/default.nix b/pkgs/development/python-modules/pytest-virtualenv/default.nix
index 8ea981ba2e7a..c4a66cc48e5d 100644
--- a/pkgs/development/python-modules/pytest-virtualenv/default.nix
+++ b/pkgs/development/python-modules/pytest-virtualenv/default.nix
@@ -1,5 +1,5 @@
 { lib, buildPythonPackage, fetchPypi
-, pytest, pytestcov, mock, cmdline, pytest-fixture-config, pytest-shutil, virtualenv }:
+, pytest, pytest-cov, mock, cmdline, pytest-fixture-config, pytest-shutil, virtualenv }:
 
 buildPythonPackage rec {
   pname = "pytest-virtualenv";
@@ -10,7 +10,7 @@ buildPythonPackage rec {
     sha256 = "03w2zz3crblj1p6i8nq17946hbn3zqp9z7cfnifw47hi4a4fww12";
   };
 
-  checkInputs = [ pytest pytestcov mock cmdline ];
+  checkInputs = [ pytest pytest-cov mock cmdline ];
   propagatedBuildInputs = [ pytest-fixture-config pytest-shutil virtualenv ];
   checkPhase = "py.test tests/unit ";
 
diff --git a/pkgs/development/python-modules/python-hosts/default.nix b/pkgs/development/python-modules/python-hosts/default.nix
index c8f1179bc66b..861addf81eef 100644
--- a/pkgs/development/python-modules/python-hosts/default.nix
+++ b/pkgs/development/python-modules/python-hosts/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchPypi, pyyaml, pytest, pytestcov }:
+{ lib, buildPythonPackage, fetchPypi, pyyaml, pytest, pytest-cov }:
 
 buildPythonPackage rec {
   pname = "python-hosts";
@@ -15,7 +15,7 @@ buildPythonPackage rec {
     substituteInPlace python_hosts/utils.py --replace "import win_inet_pton" ""
   '';
 
-  checkInputs = [ pyyaml pytest pytestcov ];
+  checkInputs = [ pyyaml pytest pytest-cov ];
 
   # Removing 1 test file (it requires internet connection) and keeping the other two
   checkPhase = ''
diff --git a/pkgs/development/python-modules/python-jsonrpc-server/default.nix b/pkgs/development/python-modules/python-jsonrpc-server/default.nix
index e641a943f865..a6d0bf800ea6 100644
--- a/pkgs/development/python-modules/python-jsonrpc-server/default.nix
+++ b/pkgs/development/python-modules/python-jsonrpc-server/default.nix
@@ -1,5 +1,5 @@
 { lib, buildPythonPackage, fetchFromGitHub, pythonOlder
-, pytestCheckHook, mock, pytestcov, coverage
+, pytestCheckHook, mock, pytest-cov, coverage
 , future, futures ? null, ujson, isPy38
 }:
 
@@ -19,7 +19,7 @@ buildPythonPackage rec {
   '';
 
   checkInputs = [
-    pytestCheckHook mock pytestcov coverage
+    pytestCheckHook mock pytest-cov coverage
   ];
 
   propagatedBuildInputs = [ future ujson ]
diff --git a/pkgs/development/python-modules/python-language-server/default.nix b/pkgs/development/python-modules/python-language-server/default.nix
index 3ed9b75ef91f..f022eba58571 100644
--- a/pkgs/development/python-modules/python-language-server/default.nix
+++ b/pkgs/development/python-modules/python-language-server/default.nix
@@ -1,6 +1,6 @@
 { lib, buildPythonPackage, fetchFromGitHub, pythonAtLeast, pythonOlder, isPy27
 , backports_functools_lru_cache ? null, configparser ? null, futures ? null, future, jedi, pluggy, python-jsonrpc-server, flake8
-, pytestCheckHook, mock, pytestcov, coverage, setuptools, ujson, flaky
+, pytestCheckHook, mock, pytest-cov, coverage, setuptools, ujson, flaky
 , # Allow building a limited set of providers, e.g. ["pycodestyle"].
   providers ? ["*"]
   # The following packages are optional and
@@ -55,7 +55,7 @@ buildPythonPackage rec {
   doCheck = providers == ["*"];
 
   checkInputs = [
-    pytestCheckHook mock pytestcov coverage flaky
+    pytestCheckHook mock pytest-cov coverage flaky
     # Do not propagate flake8 or it will enable pyflakes implicitly
     flake8
     # rope is technically a dependency, but we don't add it by default since we
diff --git a/pkgs/development/python-modules/python-lz4/default.nix b/pkgs/development/python-modules/python-lz4/default.nix
index 95208c7b94b6..901a368d5d85 100644
--- a/pkgs/development/python-modules/python-lz4/default.nix
+++ b/pkgs/development/python-modules/python-lz4/default.nix
@@ -6,7 +6,7 @@
 , pkgconfig
 , psutil
 , pytest
-, pytestcov
+, pytest-cov
 , pytestrunner
 , setuptools-scm
 }:
@@ -24,7 +24,7 @@ buildPythonPackage rec {
   };
 
   nativeBuildInputs = [ setuptools-scm pkgconfig pytestrunner ];
-  checkInputs = [ pytest pytestcov psutil ];
+  checkInputs = [ pytest pytest-cov psutil ];
   propagatedBuildInputs = lib.optionals (!isPy3k) [ future ];
 
   # give a hint to setuptools-scm on package version
diff --git a/pkgs/development/python-modules/python-multipart/default.nix b/pkgs/development/python-modules/python-multipart/default.nix
index c27923424872..ccac3e8b3cb2 100644
--- a/pkgs/development/python-modules/python-multipart/default.nix
+++ b/pkgs/development/python-modules/python-multipart/default.nix
@@ -2,7 +2,7 @@
 , buildPythonPackage
 , fetchPypi
 , pytest
-, pytestcov
+, pytest-cov
 , mock
 , pyyaml
 , six
@@ -19,7 +19,7 @@ buildPythonPackage rec {
 
   checkInputs = [
     pytest
-    pytestcov
+    pytest-cov
     mock
     pyyaml
   ];
diff --git a/pkgs/development/python-modules/qcelemental/default.nix b/pkgs/development/python-modules/qcelemental/default.nix
index 3a3e9bced050..e06afb02165b 100644
--- a/pkgs/development/python-modules/qcelemental/default.nix
+++ b/pkgs/development/python-modules/qcelemental/default.nix
@@ -1,12 +1,12 @@
 { buildPythonPackage, lib, fetchPypi, numpy
-, pydantic, pint,  networkx, pytestrunner, pytestcov, pytest
+, pydantic, pint,  networkx, pytestrunner, pytest-cov, pytest
 } :
 
 buildPythonPackage rec {
   pname = "qcelemental";
   version = "0.21.0";
 
-  checkInputs = [ pytestrunner pytestcov pytest ];
+  checkInputs = [ pytestrunner pytest-cov pytest ];
   propagatedBuildInputs = [ numpy pydantic pint networkx ];
 
   src = fetchPypi {
diff --git a/pkgs/development/python-modules/qcengine/default.nix b/pkgs/development/python-modules/qcengine/default.nix
index 847eeb23c9a1..793e1ada739e 100644
--- a/pkgs/development/python-modules/qcengine/default.nix
+++ b/pkgs/development/python-modules/qcengine/default.nix
@@ -1,5 +1,5 @@
 { buildPythonPackage, lib, fetchPypi, pyyaml, qcelemental, pydantic
-, py-cpuinfo, psutil, pytestrunner, pytest, pytestcov
+, py-cpuinfo, psutil, pytestrunner, pytest, pytest-cov
 } :
 
 buildPythonPackage rec {
@@ -8,7 +8,7 @@ buildPythonPackage rec {
 
   checkInputs = [
     pytestrunner
-    pytestcov
+    pytest-cov
     pytest
   ];
 
diff --git a/pkgs/development/python-modules/rasterio/default.nix b/pkgs/development/python-modules/rasterio/default.nix
index 85d5d5d0b7d8..1ec6448d74c1 100644
--- a/pkgs/development/python-modules/rasterio/default.nix
+++ b/pkgs/development/python-modules/rasterio/default.nix
@@ -1,7 +1,7 @@
 { buildPythonPackage, lib, fetchFromGitHub, isPy3k
 , cython, setuptools
 , numpy, affine, attrs, cligj, click-plugins, snuggs, gdal
-, pytest, pytestcov, packaging, hypothesis, boto3, mock
+, pytest, pytest-cov, packaging, hypothesis, boto3, mock
 , certifi, shapely
 }:
 
@@ -17,7 +17,7 @@ buildPythonPackage rec {
     sha256 = "sha256-rf2qdUhbS4Z2+mvlN1RzZvlgTgjqiBoQzry4z5QLSUc=";
   };
 
-  checkInputs = [ boto3 pytest pytestcov packaging hypothesis shapely ] ++ lib.optional (!isPy3k) mock;
+  checkInputs = [ boto3 pytest pytest-cov packaging hypothesis shapely ] ++ lib.optional (!isPy3k) mock;
   nativeBuildInputs = [ cython gdal ];
   propagatedBuildInputs = [ certifi gdal numpy attrs affine cligj click-plugins snuggs setuptools ];
 
diff --git a/pkgs/development/python-modules/readchar/default.nix b/pkgs/development/python-modules/readchar/default.nix
index ea13c7083fe7..c83a2bba1cd6 100644
--- a/pkgs/development/python-modules/readchar/default.nix
+++ b/pkgs/development/python-modules/readchar/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchFromGitHub, flake8, pytest, pytestcov, pexpect }:
+{ lib, buildPythonPackage, fetchFromGitHub, flake8, pytest, pytest-cov, pexpect }:
 
 buildPythonPackage rec {
   pname = "readchar";
@@ -13,7 +13,7 @@ buildPythonPackage rec {
   };
 
   nativeBuildInputs = [ flake8 ];
-  checkInputs = [ pytest pytestcov pexpect ];
+  checkInputs = [ pytest pytest-cov pexpect ];
 
   meta = with lib; {
     homepage = "https://github.com/magmax/python-readchar";
diff --git a/pkgs/development/python-modules/reikna/default.nix b/pkgs/development/python-modules/reikna/default.nix
index 896bc8e02f09..873a39244fe3 100644
--- a/pkgs/development/python-modules/reikna/default.nix
+++ b/pkgs/development/python-modules/reikna/default.nix
@@ -2,7 +2,7 @@
 , fetchPypi
 , buildPythonPackage
 , sphinx
-, pytestcov
+, pytest-cov
 , pytest
 , Mako
 , numpy
@@ -20,7 +20,7 @@ buildPythonPackage rec {
     sha256 = "d01f4264c8379ef2962a93aacb002d491b92ef9b5b22b45f77e7821dfa87bef7";
   };
 
-  checkInputs = [ sphinx pytestcov pytest ];
+  checkInputs = [ sphinx pytest-cov pytest ];
 
   propagatedBuildInputs = [ Mako numpy funcsigs ]
     ++ lib.optional withCuda pycuda
diff --git a/pkgs/development/python-modules/resampy/default.nix b/pkgs/development/python-modules/resampy/default.nix
index 551c7f5b93e6..e7e7ed5a7381 100644
--- a/pkgs/development/python-modules/resampy/default.nix
+++ b/pkgs/development/python-modules/resampy/default.nix
@@ -2,7 +2,7 @@
 , buildPythonPackage
 , fetchFromGitHub
 , pytest
-, pytestcov
+, pytest-cov
 , numpy
 , scipy
 , cython
@@ -22,7 +22,7 @@ buildPythonPackage rec {
     sha256 = "0qmkxl5sbgh0j73n667vyi7ywzh09iaync91yp1j5rrcmwsn0qfs";
   };
 
-  checkInputs = [ pytest pytestcov ];
+  checkInputs = [ pytest pytest-cov ];
   propagatedBuildInputs = [ numpy scipy cython numba six ];
 
   checkPhase = ''
diff --git a/pkgs/development/python-modules/rising/default.nix b/pkgs/development/python-modules/rising/default.nix
index eb9afc8353c7..03aed296aa63 100644
--- a/pkgs/development/python-modules/rising/default.nix
+++ b/pkgs/development/python-modules/rising/default.nix
@@ -3,7 +3,7 @@
 , isPy27
 , fetchFromGitHub
 , pytestCheckHook
-, pytestcov
+, pytest-cov
 , dill
 , numpy
 , pytorch
@@ -25,7 +25,7 @@ buildPythonPackage rec {
   };
 
   propagatedBuildInputs = [ numpy pytorch threadpoolctl tqdm ];
-  checkInputs = [ dill pytestcov pytestCheckHook ];
+  checkInputs = [ dill pytest-cov pytestCheckHook ];
 
   disabledTests = [ "test_affine" ];  # deprecated division operator '/'
 
diff --git a/pkgs/development/python-modules/runway-python/default.nix b/pkgs/development/python-modules/runway-python/default.nix
index c47054632c6f..4e062d9928ec 100644
--- a/pkgs/development/python-modules/runway-python/default.nix
+++ b/pkgs/development/python-modules/runway-python/default.nix
@@ -20,7 +20,7 @@
 , wget
 , deepdiff
 , pytestCheckHook
-, pytestcov
+, pytest-cov
 , websocket-client
 }:
 
@@ -61,7 +61,7 @@ buildPythonPackage rec {
   checkInputs = [
     deepdiff
     pytestCheckHook
-    pytestcov
+    pytest-cov
     websocket-client
   ];
 
diff --git a/pkgs/development/python-modules/rxv/default.nix b/pkgs/development/python-modules/rxv/default.nix
index 7f3e6527d060..5f0653236acf 100644
--- a/pkgs/development/python-modules/rxv/default.nix
+++ b/pkgs/development/python-modules/rxv/default.nix
@@ -6,7 +6,7 @@
 , pytest
 , requests-mock
 , mock
-, pytestcov
+, pytest-cov
 , pytest-timeout
 , testtools
 }:
@@ -25,7 +25,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ defusedxml requests ];
 
-  checkInputs = [ pytest requests-mock mock pytestcov pytest-timeout testtools ];
+  checkInputs = [ pytest requests-mock mock pytest-cov pytest-timeout testtools ];
   checkPhase = ''
     pytest
   '';
diff --git a/pkgs/development/python-modules/scikit-build/default.nix b/pkgs/development/python-modules/scikit-build/default.nix
index 6694c3abe4df..3a3feaa14edc 100644
--- a/pkgs/development/python-modules/scikit-build/default.nix
+++ b/pkgs/development/python-modules/scikit-build/default.nix
@@ -15,7 +15,7 @@
 , ninja
 , pathpy
 , pytest
-, pytestcov
+, pytest-cov
 , pytest-mock
 , pytestrunner
 , pytest-virtualenv
@@ -48,7 +48,7 @@ buildPythonPackage rec {
     ninja
     pathpy
     pytest
-    pytestcov
+    pytest-cov
     pytest-mock
     pytestrunner
     pytest-virtualenv
diff --git a/pkgs/development/python-modules/scrapy-fake-useragent/default.nix b/pkgs/development/python-modules/scrapy-fake-useragent/default.nix
index f9f896a563b7..643afd6dc8bf 100644
--- a/pkgs/development/python-modules/scrapy-fake-useragent/default.nix
+++ b/pkgs/development/python-modules/scrapy-fake-useragent/default.nix
@@ -1,4 +1,4 @@
-{ lib, fetchFromGitHub, buildPythonPackage, pytestCheckHook, pytestcov, pytest-mock, fake-useragent, faker, scrapy }:
+{ lib, fetchFromGitHub, buildPythonPackage, pytestCheckHook, pytest-cov, pytest-mock, fake-useragent, faker, scrapy }:
 
 buildPythonPackage rec {
   pname = "scrapy-fake-useragent";
@@ -14,7 +14,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ fake-useragent faker ];
 
-  checkInputs = [ pytestCheckHook scrapy pytestcov pytest-mock ];
+  checkInputs = [ pytestCheckHook scrapy pytest-cov pytest-mock ];
 
   meta = with lib; {
     description = "Random User-Agent middleware based on fake-useragent";
diff --git a/pkgs/development/python-modules/skorch/default.nix b/pkgs/development/python-modules/skorch/default.nix
index db3b8ed4312c..3bbf28d2884e 100644
--- a/pkgs/development/python-modules/skorch/default.nix
+++ b/pkgs/development/python-modules/skorch/default.nix
@@ -3,7 +3,7 @@
 , fetchPypi
 , pytestCheckHook
 , pytest
-, pytestcov
+, pytest-cov
 , flaky
 , numpy
 , pandas
@@ -24,7 +24,7 @@ buildPythonPackage rec {
   };
 
   propagatedBuildInputs = [ numpy pytorch scikit-learn scipy tabulate tqdm ];
-  checkInputs = [ pytest pytestcov flaky pandas pytestCheckHook ];
+  checkInputs = [ pytest pytest-cov flaky pandas pytestCheckHook ];
 
   disabledTests = [
     # on CPU, these expect artifacts from previous GPU run
diff --git a/pkgs/development/python-modules/softlayer/default.nix b/pkgs/development/python-modules/softlayer/default.nix
index 3c2a5e2a356d..78ecb3face30 100644
--- a/pkgs/development/python-modules/softlayer/default.nix
+++ b/pkgs/development/python-modules/softlayer/default.nix
@@ -9,7 +9,7 @@
 , pygments
 , urllib3
 , pytest
-, pytestcov
+, pytest-cov
 , mock
 , sphinx
 , testtools
@@ -22,7 +22,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ ptable click requests prompt_toolkit pygments urllib3 ];
 
-  checkInputs = [ pytest pytestcov mock sphinx testtools ptable click requests prompt_toolkit pygments urllib3 ];
+  checkInputs = [ pytest pytest-cov mock sphinx testtools ptable click requests prompt_toolkit pygments urllib3 ];
 
   checkPhase = ''
     pytest
diff --git a/pkgs/development/python-modules/stripe/default.nix b/pkgs/development/python-modules/stripe/default.nix
index cfdc173995c3..a0b5c9799254 100644
--- a/pkgs/development/python-modules/stripe/default.nix
+++ b/pkgs/development/python-modules/stripe/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildPythonPackage, fetchPypi, requests, pytest, pytestcov, pytest-mock, pytest_xdist }:
+{ lib, buildPythonPackage, fetchPypi, requests, pytest, pytest-cov, pytest-mock, pytest_xdist }:
 
 buildPythonPackage rec {
   pname = "stripe";
@@ -15,7 +15,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ requests ];
 
-  checkInputs = [ pytest pytestcov pytest-mock pytest_xdist ];
+  checkInputs = [ pytest pytest-cov pytest-mock pytest_xdist ];
 
   meta = with lib; {
     description = "Stripe Python bindings";
diff --git a/pkgs/development/python-modules/stups-cli-support/default.nix b/pkgs/development/python-modules/stups-cli-support/default.nix
index 35aaf45ed1a2..97a7d6ebbdda 100644
--- a/pkgs/development/python-modules/stups-cli-support/default.nix
+++ b/pkgs/development/python-modules/stups-cli-support/default.nix
@@ -5,7 +5,7 @@
 , dnspython
 , requests
 , pytest
-, pytestcov
+, pytest-cov
 , isPy3k
 }:
 
@@ -31,7 +31,7 @@ buildPythonPackage rec {
 
   checkInputs = [
     pytest
-    pytestcov
+    pytest-cov
   ];
 
   meta = with lib; {
diff --git a/pkgs/development/python-modules/stups-fullstop/default.nix b/pkgs/development/python-modules/stups-fullstop/default.nix
index 5f51112324aa..8628c83334ba 100644
--- a/pkgs/development/python-modules/stups-fullstop/default.nix
+++ b/pkgs/development/python-modules/stups-fullstop/default.nix
@@ -5,7 +5,7 @@
 , stups-cli-support
 , stups-zign
 , pytest
-, pytestcov
+, pytest-cov
 , isPy3k
 }:
 
@@ -33,7 +33,7 @@ buildPythonPackage rec {
 
   checkInputs = [
     pytest
-    pytestcov
+    pytest-cov
   ];
 
   meta = with lib; {
diff --git a/pkgs/development/python-modules/stups-pierone/default.nix b/pkgs/development/python-modules/stups-pierone/default.nix
index aaa049916411..92cd344edb6d 100644
--- a/pkgs/development/python-modules/stups-pierone/default.nix
+++ b/pkgs/development/python-modules/stups-pierone/default.nix
@@ -5,7 +5,7 @@
 , stups-cli-support
 , stups-zign
 , pytest
-, pytestcov
+, pytest-cov
 , hypothesis
 , isPy3k
 }:
@@ -34,7 +34,7 @@ buildPythonPackage rec {
 
   checkInputs = [
     pytest
-    pytestcov
+    pytest-cov
     hypothesis
   ];
 
diff --git a/pkgs/development/python-modules/stups-tokens/default.nix b/pkgs/development/python-modules/stups-tokens/default.nix
index 3e785d8febbe..62dec6f348e8 100644
--- a/pkgs/development/python-modules/stups-tokens/default.nix
+++ b/pkgs/development/python-modules/stups-tokens/default.nix
@@ -4,7 +4,7 @@
 , requests
 , mock
 , pytest
-, pytestcov
+, pytest-cov
 , isPy3k
 }:
 
@@ -27,7 +27,7 @@ buildPythonPackage rec {
   checkInputs = [
     mock
     pytest
-    pytestcov
+    pytest-cov
   ];
 
   meta = with lib; {
diff --git a/pkgs/development/python-modules/stups-zign/default.nix b/pkgs/development/python-modules/stups-zign/default.nix
index 6b80f55636a9..e7f6c2805de5 100644
--- a/pkgs/development/python-modules/stups-zign/default.nix
+++ b/pkgs/development/python-modules/stups-zign/default.nix
@@ -5,7 +5,7 @@
 , stups-tokens
 , stups-cli-support
 , pytest
-, pytestcov
+, pytest-cov
 , isPy3k
 }:
 
@@ -40,7 +40,7 @@ buildPythonPackage rec {
 
   checkInputs = [
     pytest
-    pytestcov
+    pytest-cov
   ];
 
   meta = with lib; {
diff --git a/pkgs/development/python-modules/subliminal/default.nix b/pkgs/development/python-modules/subliminal/default.nix
index cedbb7bcf786..fe92b71f3f52 100644
--- a/pkgs/development/python-modules/subliminal/default.nix
+++ b/pkgs/development/python-modules/subliminal/default.nix
@@ -19,7 +19,7 @@
 , vcrpy
 , pytest
 , pytest-flakes
-, pytestcov
+, pytest-cov
 , pytestrunner
 }:
 
@@ -40,7 +40,7 @@ buildPythonPackage rec {
 
   checkInputs = [
     sympy vcrpy pytest pytest-flakes
-    pytestcov pytestrunner
+    pytest-cov pytestrunner
   ];
 
   # https://github.com/Diaoul/subliminal/pull/963
diff --git a/pkgs/development/python-modules/sunpy/default.nix b/pkgs/development/python-modules/sunpy/default.nix
index c8fd82043a81..0079b44cfd35 100644
--- a/pkgs/development/python-modules/sunpy/default.nix
+++ b/pkgs/development/python-modules/sunpy/default.nix
@@ -19,7 +19,7 @@
 , parfive
 , pytest-astropy
 , pytest-mock
-, pytestcov
+, pytest-cov
 , python-dateutil
 , scikitimage
 , scipy
@@ -68,7 +68,7 @@ buildPythonPackage rec {
   checkInputs = [
     hypothesis
     pytest-astropy
-    pytestcov
+    pytest-cov
     pytest-mock
   ];
 
diff --git a/pkgs/development/python-modules/tablib/default.nix b/pkgs/development/python-modules/tablib/default.nix
index b6754e15ad5d..404edac7e59b 100644
--- a/pkgs/development/python-modules/tablib/default.nix
+++ b/pkgs/development/python-modules/tablib/default.nix
@@ -4,7 +4,7 @@
 , pandas
 , setuptools-scm
 , pytest
-, pytestcov
+, pytest-cov
 , pyyaml
 , unicodecsv
 , xlrd
@@ -23,7 +23,7 @@ buildPythonPackage rec {
 
   nativeBuildInputs = [ setuptools-scm ];
   propagatedBuildInputs = [ xlwt openpyxl pyyaml xlrd odfpy ];
-  checkInputs = [ pytest pytestcov unicodecsv pandas ];
+  checkInputs = [ pytest pytest-cov unicodecsv pandas ];
 
   # test_tablib needs MarkupPy, which isn't packaged yet
   checkPhase = ''
diff --git a/pkgs/development/python-modules/tempora/default.nix b/pkgs/development/python-modules/tempora/default.nix
index b06a53cb333c..8da8d622a7b3 100644
--- a/pkgs/development/python-modules/tempora/default.nix
+++ b/pkgs/development/python-modules/tempora/default.nix
@@ -1,7 +1,7 @@
 { lib, buildPythonPackage, fetchPypi
 , setuptools-scm, pytest, pytest-freezegun, freezegun, backports_unittest-mock
 , six, pytz, jaraco_functools, pythonOlder
-, pytest-flake8, pytestcov, pytest-black, pytest-mypy
+, pytest-flake8, pytest-cov, pytest-black, pytest-mypy
 }:
 
 buildPythonPackage rec {
@@ -21,7 +21,7 @@ buildPythonPackage rec {
 
   checkInputs = [
     pytest-freezegun pytest freezegun backports_unittest-mock
-    pytest-flake8 pytestcov pytest-black pytest-mypy
+    pytest-flake8 pytest-cov pytest-black pytest-mypy
   ];
 
   checkPhase = ''
diff --git a/pkgs/development/python-modules/textwrap3/default.nix b/pkgs/development/python-modules/textwrap3/default.nix
index 791479b69e14..995a62230b22 100644
--- a/pkgs/development/python-modules/textwrap3/default.nix
+++ b/pkgs/development/python-modules/textwrap3/default.nix
@@ -4,7 +4,7 @@
 , tox
 , pytest
 , coverage
-, pytestcov
+, pytest-cov
 }:
 
 buildPythonPackage rec {
@@ -21,7 +21,7 @@ buildPythonPackage rec {
     tox
     pytest
     coverage
-    pytestcov
+    pytest-cov
   ];
 
   checkPhase = ''
diff --git a/pkgs/development/python-modules/threadpoolctl/default.nix b/pkgs/development/python-modules/threadpoolctl/default.nix
index fb2c6094b37c..20fad7c18a0a 100644
--- a/pkgs/development/python-modules/threadpoolctl/default.nix
+++ b/pkgs/development/python-modules/threadpoolctl/default.nix
@@ -4,7 +4,7 @@
 , fetchFromGitHub
 , flit
 , pytestCheckHook
-, pytestcov
+, pytest-cov
 , numpy
 , scipy
 }:
@@ -23,7 +23,7 @@ buildPythonPackage rec {
     sha256 = "0sl6mp3b2gb0dvqkhnkmrp2g3r5c7clyyyxzq44xih6sw1pgx9df";
   };
 
-  checkInputs = [ pytestCheckHook pytestcov numpy scipy ];
+  checkInputs = [ pytestCheckHook pytest-cov numpy scipy ];
 
   meta = with lib; {
     homepage = "https://github.com/joblib/threadpoolctl";
diff --git a/pkgs/development/python-modules/timezonefinder/default.nix b/pkgs/development/python-modules/timezonefinder/default.nix
index 48aff396aaad..1cd055588c28 100644
--- a/pkgs/development/python-modules/timezonefinder/default.nix
+++ b/pkgs/development/python-modules/timezonefinder/default.nix
@@ -5,7 +5,7 @@
 , numba
 , numpy
 , pytestCheckHook
-, pytestcov
+, pytest-cov
 }:
 
 buildPythonPackage rec {
@@ -23,7 +23,7 @@ buildPythonPackage rec {
     numpy
   ];
 
-  checkInputs = [ numba pytestCheckHook pytestcov ];
+  checkInputs = [ numba pytestCheckHook pytest-cov ];
 
   meta = with lib; {
     description = "fast python package for finding the timezone of any point on earth (coordinates) offline";
diff --git a/pkgs/development/python-modules/tinycss2/default.nix b/pkgs/development/python-modules/tinycss2/default.nix
index 35c0f76b0843..7a025577dbb0 100644
--- a/pkgs/development/python-modules/tinycss2/default.nix
+++ b/pkgs/development/python-modules/tinycss2/default.nix
@@ -7,7 +7,7 @@
 # Check inputs
 , pytest
 , pytestrunner
-, pytestcov
+, pytest-cov
 , pytest-flake8
 , pytest-isort
 }:
@@ -34,7 +34,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ webencodings ];
 
-  checkInputs = [ pytest pytestrunner pytestcov pytest-flake8 pytest-isort ];
+  checkInputs = [ pytest pytestrunner pytest-cov pytest-flake8 pytest-isort ];
 
   # https://github.com/PyCQA/pycodestyle/issues/598
   preCheck = ''
diff --git a/pkgs/development/python-modules/toggl-cli/default.nix b/pkgs/development/python-modules/toggl-cli/default.nix
index d8225e7031ea..fb39831a0d18 100644
--- a/pkgs/development/python-modules/toggl-cli/default.nix
+++ b/pkgs/development/python-modules/toggl-cli/default.nix
@@ -1,6 +1,6 @@
 { lib, buildPythonPackage, fetchPypi, pythonAtLeast, pythonOlder, click
 , click-completion, factory_boy, faker, inquirer, notify-py, pbr, pendulum
-, ptable, pytestCheckHook, pytestcov, pytest-mock, requests, twine
+, ptable, pytestCheckHook, pytest-cov, pytest-mock, requests, twine
 , validate-email }:
 
 buildPythonPackage rec {
@@ -20,7 +20,7 @@ buildPythonPackage rec {
   '';
 
   nativeBuildInputs = [ pbr twine ];
-  checkInputs = [ pbr pytestCheckHook pytestcov pytest-mock faker factory_boy ];
+  checkInputs = [ pbr pytestCheckHook pytest-cov pytest-mock faker factory_boy ];
 
   preCheck = ''
     export TOGGL_API_TOKEN=your_api_token
diff --git a/pkgs/development/python-modules/typer/default.nix b/pkgs/development/python-modules/typer/default.nix
index 61adcf9254ff..13d037515c3f 100644
--- a/pkgs/development/python-modules/typer/default.nix
+++ b/pkgs/development/python-modules/typer/default.nix
@@ -4,7 +4,7 @@
 , click
 , pytestCheckHook
 , shellingham
-, pytestcov
+, pytest-cov
 , pytest_xdist
 , pytest-sugar
 , coverage
@@ -26,7 +26,7 @@ buildPythonPackage rec {
 
   checkInputs = [
     pytestCheckHook
-    pytestcov
+    pytest-cov
     pytest_xdist
     pytest-sugar
     shellingham
diff --git a/pkgs/development/python-modules/typesentry/default.nix b/pkgs/development/python-modules/typesentry/default.nix
index ef3b1c78c399..a4d8125b5d61 100644
--- a/pkgs/development/python-modules/typesentry/default.nix
+++ b/pkgs/development/python-modules/typesentry/default.nix
@@ -3,7 +3,7 @@
 , fetchFromGitHub
 , colorama
 , pytest
-, pytestcov
+, pytest-cov
 }:
 
 buildPythonPackage {
@@ -19,7 +19,7 @@ buildPythonPackage {
   };
 
   propagatedBuildInputs = [ colorama ];
-  checkInputs = [ pytest pytestcov ];
+  checkInputs = [ pytest pytest-cov ];
   checkPhase = ''
     pytest
   '';
diff --git a/pkgs/development/python-modules/typesystem/default.nix b/pkgs/development/python-modules/typesystem/default.nix
index c278680404ba..f7dcf33ea7fd 100644
--- a/pkgs/development/python-modules/typesystem/default.nix
+++ b/pkgs/development/python-modules/typesystem/default.nix
@@ -3,7 +3,7 @@
 , fetchFromGitHub
 , isPy27
 , pytestCheckHook
-, pytestcov
+, pytest-cov
 , jinja2
 , pyyaml
 }:
@@ -27,7 +27,7 @@ buildPythonPackage rec {
 
   checkInputs = [
     pytestCheckHook
-    pytestcov
+    pytest-cov
   ];
 
   disabledTests = [
diff --git a/pkgs/development/python-modules/uarray/default.nix b/pkgs/development/python-modules/uarray/default.nix
index 32a877582342..4d7fe6b034b4 100644
--- a/pkgs/development/python-modules/uarray/default.nix
+++ b/pkgs/development/python-modules/uarray/default.nix
@@ -7,7 +7,7 @@
 , astunparse
 , typing-extensions
 , pytestCheckHook
-, pytestcov
+, pytest-cov
 }:
 
 buildPythonPackage rec {
@@ -30,7 +30,7 @@ buildPythonPackage rec {
     }
   )];
 
-  checkInputs = [ pytestCheckHook pytestcov ];
+  checkInputs = [ pytestCheckHook pytest-cov ];
   propagatedBuildInputs = [ matchpy numpy astunparse typing-extensions ];
 
   # Tests must be run from outside the source directory
diff --git a/pkgs/development/python-modules/venusian/default.nix b/pkgs/development/python-modules/venusian/default.nix
index 82e291ae4623..f13bd4cbdc43 100644
--- a/pkgs/development/python-modules/venusian/default.nix
+++ b/pkgs/development/python-modules/venusian/default.nix
@@ -3,7 +3,7 @@
 , fetchPypi
 , isPy27
 , pytest
-, pytestcov
+, pytest-cov
 }:
 
 buildPythonPackage rec {
@@ -16,7 +16,7 @@ buildPythonPackage rec {
     sha256 = "f6842b7242b1039c0c28f6feef29016e7e7dd3caaeb476a193acf737db31ee38";
   };
 
-  checkInputs = [ pytest pytestcov ];
+  checkInputs = [ pytest pytest-cov ];
 
   checkPhase = ''
     pytest
diff --git a/pkgs/development/python-modules/weasyprint/default.nix b/pkgs/development/python-modules/weasyprint/default.nix
index 8f946c47786d..c578b7c7c8c0 100644
--- a/pkgs/development/python-modules/weasyprint/default.nix
+++ b/pkgs/development/python-modules/weasyprint/default.nix
@@ -16,7 +16,7 @@
   pytestrunner,
   pytest-isort,
   pytest-flake8,
-  pytestcov,
+  pytest-cov,
   isPy3k,
   substituteAll
 }:
@@ -39,7 +39,7 @@ buildPythonPackage rec {
         --replace '[tool:pytest]' '[tool:pytest]\nflake8-ignore = E501'
   '';
 
-  checkInputs = [ pytest pytestrunner pytest-isort pytest-flake8 pytestcov ];
+  checkInputs = [ pytest pytestrunner pytest-isort pytest-flake8 pytest-cov ];
 
   FONTCONFIG_FILE = "${fontconfig.out}/etc/fonts/fonts.conf";
 
diff --git a/pkgs/development/python-modules/word2vec/default.nix b/pkgs/development/python-modules/word2vec/default.nix
index b078231c9429..1272916d41f7 100644
--- a/pkgs/development/python-modules/word2vec/default.nix
+++ b/pkgs/development/python-modules/word2vec/default.nix
@@ -9,7 +9,7 @@
 , setuptools-scm
 , gcc
 , pytest
-, pytestcov
+, pytest-cov
 , isPy27
 }:
 let
@@ -32,7 +32,7 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [ cython numpy scikit-learn six ];
 
-  checkInputs = [ pytest pytestcov ];
+  checkInputs = [ pytest pytest-cov ];
 
   # Checks require test data downloaded separately
   # See project source Makefile:test-data rule for reference
diff --git a/pkgs/development/python-modules/wordcloud/default.nix b/pkgs/development/python-modules/wordcloud/default.nix
index 80f22efbda85..e04f17c214df 100644
--- a/pkgs/development/python-modules/wordcloud/default.nix
+++ b/pkgs/development/python-modules/wordcloud/default.nix
@@ -4,7 +4,7 @@
 , numpy
 , pillow
 , cython
-, pytestcov
+, pytest-cov
 , pytest
 , fetchpatch
 }:
@@ -25,7 +25,7 @@ buildPythonPackage rec {
   propagatedBuildInputs = [ matplotlib numpy pillow ];
 
   # Tests require extra dependencies
-  checkInputs = [ mock pytest pytestcov ];
+  checkInputs = [ mock pytest pytest-cov ];
 
   checkPhase = ''
     PATH=$out/bin:$PATH pytest test
diff --git a/pkgs/development/tools/sourcetrail/jedi.nix b/pkgs/development/tools/sourcetrail/jedi.nix
index 2e1ca55dad3f..93650c9027a4 100644
--- a/pkgs/development/tools/sourcetrail/jedi.nix
+++ b/pkgs/development/tools/sourcetrail/jedi.nix
@@ -1,6 +1,6 @@
 # Taken from a past commit of nixpkgs
 
-{ lib, buildPythonPackage, fetchPypi, pytest, glibcLocales, tox, pytestcov, parso }:
+{ lib, buildPythonPackage, fetchPypi, pytest, glibcLocales, tox, pytest-cov, parso }:
 
 buildPythonPackage rec {
   pname = "jedi";
@@ -17,7 +17,7 @@ buildPythonPackage rec {
     sha256 = "86ed7d9b750603e4ba582ea8edc678657fb4007894a12bcf6f4bb97892f31d20";
   };
 
-  checkInputs = [ pytest glibcLocales tox pytestcov ];
+  checkInputs = [ pytest glibcLocales tox pytest-cov ];
 
   propagatedBuildInputs = [ parso ];
 
diff --git a/pkgs/development/tools/vim-vint/default.nix b/pkgs/development/tools/vim-vint/default.nix
index fcab1f952f2b..a6d28b36bffd 100644
--- a/pkgs/development/tools/vim-vint/default.nix
+++ b/pkgs/development/tools/vim-vint/default.nix
@@ -14,7 +14,7 @@ buildPythonApplication rec {
   # For python 3.5 > version > 2.7 , a nested dependency (pythonPackages.hypothesis) fails.
   disabled = ! pythonAtLeast "3.5";
 
-  checkInputs = [ pytest pytestcov ];
+  checkInputs = [ pytest pytest-cov ];
   propagatedBuildInputs = [ ansicolor chardet pyyaml setuptools ];
 
   # Unpin test dependency versions. This is fixed in master but not yet released.
diff --git a/pkgs/servers/dns/doh-proxy/default.nix b/pkgs/servers/dns/doh-proxy/default.nix
index e65021599ad4..8774715bb1d8 100644
--- a/pkgs/servers/dns/doh-proxy/default.nix
+++ b/pkgs/servers/dns/doh-proxy/default.nix
@@ -22,7 +22,7 @@ buildPythonApplication rec {
     asynctest
     unittest-data-provider
     pytest
-    pytestcov
+    pytest-cov
     pytest-aiohttp
   ];
 
diff --git a/pkgs/tools/admin/lexicon/default.nix b/pkgs/tools/admin/lexicon/default.nix
index 6c105cf9b335..7737205ce02d 100644
--- a/pkgs/tools/admin/lexicon/default.nix
+++ b/pkgs/tools/admin/lexicon/default.nix
@@ -65,7 +65,7 @@ buildPythonApplication rec {
   checkInputs = [
     mock
     pytest
-    pytestcov
+    pytest-cov
     pytest_xdist
     vcrpy
   ];
diff --git a/pkgs/tools/admin/salt/pepper/default.nix b/pkgs/tools/admin/salt/pepper/default.nix
index 25d3eaa15fc8..31cb2861f39f 100644
--- a/pkgs/tools/admin/salt/pepper/default.nix
+++ b/pkgs/tools/admin/salt/pepper/default.nix
@@ -13,7 +13,7 @@ python3Packages.buildPythonApplication rec {
 
   buildInputs = with python3Packages; [ setuptools setuptools-scm salt ];
   checkInputs = with python3Packages; [
-    pytest mock pyzmq pytest-rerunfailures pytestcov cherrypy tornado
+    pytest mock pyzmq pytest-rerunfailures pytest-cov cherrypy tornado
   ];
 
   meta = with lib; {
diff --git a/pkgs/tools/backup/zfs-replicate/default.nix b/pkgs/tools/backup/zfs-replicate/default.nix
index c167ad1fa018..aae6ce329f68 100644
--- a/pkgs/tools/backup/zfs-replicate/default.nix
+++ b/pkgs/tools/backup/zfs-replicate/default.nix
@@ -1,5 +1,5 @@
 { buildPythonApplication, click, fetchPypi, hypothesis, mypy, pytest
-, pytestcov, pytestrunner, lib, stringcase
+, pytest-cov, pytestrunner, lib, stringcase
 }:
 
 buildPythonApplication rec {
@@ -15,7 +15,7 @@ buildPythonApplication rec {
     hypothesis
     mypy
     pytest
-    pytestcov
+    pytest-cov
   ];
 
   buildInputs = [
diff --git a/pkgs/tools/filesystems/gitfs/default.nix b/pkgs/tools/filesystems/gitfs/default.nix
index 03e76e5fb275..b5b1256a9b5e 100644
--- a/pkgs/tools/filesystems/gitfs/default.nix
+++ b/pkgs/tools/filesystems/gitfs/default.nix
@@ -22,7 +22,7 @@ python3Packages.buildPythonApplication rec {
       'from pygit2 import RemoteCallbacks'
   '';
 
-  checkInputs = with python3Packages; [ pytest pytestcov mock ];
+  checkInputs = with python3Packages; [ pytest pytest-cov mock ];
   propagatedBuildInputs = with python3Packages; [ atomiclong fusepy pygit2 six ];
 
   checkPhase = "py.test";
diff --git a/pkgs/tools/misc/bonfire/default.nix b/pkgs/tools/misc/bonfire/default.nix
index a3f1608c3ad1..f71d8a8b8ef3 100644
--- a/pkgs/tools/misc/bonfire/default.nix
+++ b/pkgs/tools/misc/bonfire/default.nix
@@ -29,7 +29,7 @@ buildPythonApplication rec {
       --replace "data_files = *.rst, *.txt" ""
   '';
 
-  buildInputs = [ httpretty pytest pytestcov ];
+  buildInputs = [ httpretty pytest pytest-cov ];
 
   preCheck = ''
     # fix compatibility with pytest 4
diff --git a/pkgs/tools/security/vulnix/default.nix b/pkgs/tools/security/vulnix/default.nix
index d49c1e925dc1..037adda92eb6 100644
--- a/pkgs/tools/security/vulnix/default.nix
+++ b/pkgs/tools/security/vulnix/default.nix
@@ -19,7 +19,7 @@ python3Packages.buildPythonApplication rec {
   checkInputs = with python3Packages; [
     freezegun
     pytest
-    pytestcov
+    pytest-cov
     pytest-flake8
   ];
 
diff --git a/pkgs/top-level/python-aliases.nix b/pkgs/top-level/python-aliases.nix
index 017d27a8a208..f42713fee3db 100644
--- a/pkgs/top-level/python-aliases.nix
+++ b/pkgs/top-level/python-aliases.nix
@@ -52,6 +52,7 @@ mapAliases ({
   privacyidea = throw "renamed to pkgs.privacyidea"; # added 2021-06-20
   pylibgen = throw "pylibgen is unmaintained upstreamed, and removed from nixpkgs"; # added 2020-06-20
   pymssql = throw "pymssql has been abandoned upstream."; # added 2020-05-04
+  pytestcov = pytest-cov; # added 2021-01-04
   pytest-pep8 = pytestpep8; # added 2021-01-04
   pytestpep8 = throw "pytestpep8 was removed because it is abandoned and no longer compatible with pytest v6.0"; # added 2020-12-10
   qasm2image = throw "qasm2image is no longer maintained (since November 2018), and is not compatible with the latest pythonPackages.qiskit versions."; # added 2020-12-09
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index c4654534e6c9..f689a562a49d 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -6786,8 +6786,7 @@ in {
 
   pytest-console-scripts = callPackage ../development/python-modules/pytest-console-scripts { };
 
-  pytest-cov = self.pytestcov; # self 2021-01-04
-  pytestcov = callPackage ../development/python-modules/pytest-cov { };
+  pytest-cov = callPackage ../development/python-modules/pytest-cov { };
 
   pytest-cram = callPackage ../development/python-modules/pytest-cram { };