diff --git a/pkgs/development/python-modules/bsuite/default.nix b/pkgs/development/python-modules/bsuite/default.nix
index 3c11353bb101..177c7656a13e 100644
--- a/pkgs/development/python-modules/bsuite/default.nix
+++ b/pkgs/development/python-modules/bsuite/default.nix
@@ -1,113 +1,128 @@
-{ lib
-, fetchPypi
-, buildPythonPackage
-, fetchpatch
-, frozendict
-, termcolor
-, matplotlib
-, gym
-, pandas
-, scipy
-, absl-py
-, dm-env
-, plotnine
-, scikit-image
-, dm-tree
-, patsy
-, tensorflow-probability
-, dm-haiku
-, statsmodels
-, mizani
-, trfl
-, optax
-, pytestCheckHook
-, dm-sonnet
-, rlax
-, distrax
+{
+  lib,
+  absl-py,
+  buildPythonPackage,
+  distrax,
+  dm-env,
+  dm-haiku,
+  dm-sonnet,
+  dm-tree,
+  fetchpatch,
+  fetchPypi,
+  frozendict,
+  gym,
+  matplotlib,
+  mizani,
+  optax,
+  pandas,
+  patsy,
+  plotnine,
+  pytestCheckHook,
+  pythonOlder,
+  rlax,
+  scikit-image,
+  scipy,
+  setuptools,
+  statsmodels,
+  tensorflow-probability,
+  termcolor,
+  trfl,
 }:
 
-let bsuite = buildPythonPackage rec {
-  pname = "bsuite";
-  version = "0.3.5";
-  format = "setuptools";
+let
+  bsuite = buildPythonPackage rec {
+    pname = "bsuite";
+    version = "0.3.5";
+    pyproject = true;
 
-  src = fetchPypi {
-    inherit pname version;
-    hash = "sha256-ak9McvXl7Nz5toUaPaRaJek9lurxiQiIW209GnZEjX0=";
+    disabled = pythonOlder "3.7";
+
+    src = fetchPypi {
+      inherit pname version;
+      hash = "sha256-ak9McvXl7Nz5toUaPaRaJek9lurxiQiIW209GnZEjX0=";
+    };
+
+    patches = [
+      # Convert np.int -> np.int32 since np.int is deprecated, https://github.com/google-deepmind/bsuite/pull/48
+      (fetchpatch {
+        url = "https://github.com/google-deepmind/bsuite/pull/48/commits/f8d81b2f1c27ef2c8c71ae286001ed879ea306ab.patch";
+        hash = "sha256-FXtvVS+U8brulq8Z27+yWIimB+kigGiUOIv1SHb1TA8=";
+      })
+      # Replace imp with importlib, https://github.com/google-deepmind/bsuite/pull/50
+      (fetchpatch {
+        name = "replace-imp.patch";
+        url = "https://github.com/google-deepmind/bsuite/commit/d08b63655c7efa5b5bb0f35e825e17549d23e812.patch";
+        hash = "sha256-V5p/6edNXTpEckuSuxJ/mvfJng5yE/pfeMoYbvlNpEo=";
+      })
+    ];
+
+    build-system = [ setuptools ];
+
+    dependencies = [
+      absl-py
+      dm-env
+      dm-tree
+      frozendict
+      gym
+      matplotlib
+      mizani
+      pandas
+      patsy
+      plotnine
+      scikit-image
+      scipy
+      statsmodels
+      termcolor
+    ];
+
+    nativeCheckInputs = [
+      distrax
+      dm-haiku
+      dm-sonnet
+      optax
+      pytestCheckHook
+      rlax
+      tensorflow-probability
+      trfl
+    ];
+
+    pythonImportsCheck = [ "bsuite" ];
+
+    disabledTests = [
+      # Tests require network connection
+      "test_run9"
+      "test_longer_action_sequence"
+      "test_reset"
+      "test_step_after_reset"
+      "test_step_on_fresh_environment"
+      "test_longer_action_sequence"
+      "test_reset"
+      "test_step_after_reset"
+      "test_step_on_fresh_environment"
+      "test_longer_action_sequence"
+      "test_reset"
+      "test_step_after_reset"
+      "test_step_on_fresh_environment"
+      "test_logger"
+      "test_episode_truncation"
+    ];
+
+    # Escape infinite recursion with rlax
+    doCheck = false;
+
+    passthru.tests = {
+      check = bsuite.overridePythonAttrs (_: {
+        doCheck = true;
+      });
+    };
+
+    meta = with lib; {
+      description = "Collection of experiments that investigate core capabilities of a reinforcement learning (RL) agent";
+      homepage = "https://github.com/deepmind/bsuite";
+      changelog = "https://github.com/google-deepmind/bsuite/releases/tag/${version}";
+      license = licenses.asl20;
+      maintainers = with maintainers; [ onny ];
+    };
   };
-
-  patches = [
-    (fetchpatch {  # Convert np.int -> np.int32 since np.int is deprecated (https://github.com/google-deepmind/bsuite/pull/48)
-      url = "https://github.com/google-deepmind/bsuite/pull/48/commits/f8d81b2f1c27ef2c8c71ae286001ed879ea306ab.patch";
-      hash = "sha256-FXtvVS+U8brulq8Z27+yWIimB+kigGiUOIv1SHb1TA8=";
-    })
-  ];
-
-  propagatedBuildInputs = [
-    absl-py
-    dm-env
-    dm-tree
-    frozendict
-    gym
-    matplotlib
-    mizani
-    pandas
-    patsy
-    plotnine
-    scikit-image
-    scipy
-    statsmodels
-    termcolor
-  ];
-
-  nativeCheckInputs = [
-    distrax
-    dm-haiku
-    dm-sonnet
-    optax
-    pytestCheckHook
-    rlax
-    tensorflow-probability
-    trfl
-  ];
-
-  pythonImportsCheck = [
-    "bsuite"
-  ];
-
-  disabledTests = [
-    # Tests require network connection
-    "test_run9"
-    "test_longer_action_sequence"
-    "test_reset"
-    "test_step_after_reset"
-    "test_step_on_fresh_environment"
-    "test_longer_action_sequence"
-    "test_reset"
-    "test_step_after_reset"
-    "test_step_on_fresh_environment"
-    "test_longer_action_sequence"
-    "test_reset"
-    "test_step_after_reset"
-    "test_step_on_fresh_environment"
-    "test_logger"
-    "test_episode_truncation"
-  ];
-
-  # escape infinite recursion with rlax
-  doCheck = false;
-
-  passthru.tests = {
-    check = bsuite.overridePythonAttrs (_: { doCheck = true; });
-  };
-
-  meta = with lib; {
-    description = ''
-      Core RL Behaviour Suite. A collection of reinforcement learning
-      experiments
-    '';
-    homepage = "https://github.com/deepmind/bsuite";
-    license = licenses.asl20;
-    maintainers = with maintainers; [ onny ];
-  };
-}; in bsuite
+in
+bsuite
diff --git a/pkgs/development/python-modules/plotnine/default.nix b/pkgs/development/python-modules/plotnine/default.nix
index bb39cae86c25..a25dcd9125f0 100644
--- a/pkgs/development/python-modules/plotnine/default.nix
+++ b/pkgs/development/python-modules/plotnine/default.nix
@@ -1,22 +1,23 @@
-{ lib
-, buildPythonPackage
-, pythonOlder
-, fetchFromGitHub
-, setuptools-scm
-, matplotlib
-, mizani
-, pandas
-, patsy
-, scipy
-, statsmodels
-, geopandas
-, pytestCheckHook
-, scikit-misc
+{
+  lib,
+  buildPythonPackage,
+  fetchFromGitHub,
+  geopandas,
+  matplotlib,
+  mizani,
+  pandas,
+  patsy,
+  pytestCheckHook,
+  pythonOlder,
+  scikit-misc,
+  scipy,
+  setuptools-scm,
+  statsmodels,
 }:
 
 buildPythonPackage rec {
   pname = "plotnine";
-  version = "0.13.3";
+  version = "0.13.4";
   pyproject = true;
 
   disabled = pythonOlder "3.9";
@@ -25,19 +26,17 @@ buildPythonPackage rec {
     owner = "has2k1";
     repo = "plotnine";
     rev = "refs/tags/v${version}";
-    hash = "sha256-dbfbXYYmVdufTtrrllrqwe87LL1nYRar4RMLef7ajTQ=";
+    hash = "sha256-ylsaV5yWVbxvD74spAI5tDwIjjue7MOMaGgp4Dc8Nhk=";
   };
 
-  nativeBuildInputs = [
-    setuptools-scm
-  ];
-
   postPatch = ''
     substituteInPlace pyproject.toml \
-      --replace " --cov=plotnine --cov-report=xml" ""
+      --replace-fail " --cov=plotnine --cov-report=xml" ""
   '';
 
-  propagatedBuildInputs = [
+  build-system = [ setuptools-scm ];
+
+  dependencies = [
     matplotlib
     mizani
     pandas
@@ -56,9 +55,7 @@ buildPythonPackage rec {
     export HOME=$(mktemp -d)
   '';
 
-  pythonImportsCheck = [
-    "plotnine"
-  ];
+  pythonImportsCheck = [ "plotnine" ];
 
   disabledTestPaths = [
     # Assertion Errors:
@@ -103,7 +100,7 @@ buildPythonPackage rec {
   ];
 
   meta = with lib; {
-    description = "Grammar of graphics for python";
+    description = "Grammar of graphics for Python";
     homepage = "https://plotnine.readthedocs.io/";
     changelog = "https://github.com/has2k1/plotnine/releases/tag/v${version}";
     license = licenses.mit;