diff --git a/pkgs/development/python-modules/pdm-pep517/default.nix b/pkgs/development/python-modules/pdm-pep517/default.nix
index 9cfe5a5e9244..4c05afe0fbd2 100644
--- a/pkgs/development/python-modules/pdm-pep517/default.nix
+++ b/pkgs/development/python-modules/pdm-pep517/default.nix
@@ -8,13 +8,13 @@
 
 buildPythonPackage rec {
   pname = "pdm-pep517";
-  version = "1.0.2";
+  version = "1.0.4";
   format = "pyproject";
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-nVoqpYlvNzN1UJeUXsKnUc0Z7jOZMG4JlRQBSx5JrfE=";
+    sha256 = "sha256-OS+MK0fG7CBVDLjhniS529Jzc0E/BntW7Ndfl2f5MBU=";
   };
 
   preCheck = ''
diff --git a/pkgs/development/python-modules/requests-wsgi-adapter/default.nix b/pkgs/development/python-modules/requests-wsgi-adapter/default.nix
new file mode 100644
index 000000000000..77386c21a869
--- /dev/null
+++ b/pkgs/development/python-modules/requests-wsgi-adapter/default.nix
@@ -0,0 +1,29 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, requests
+}:
+
+buildPythonPackage rec {
+  pname = "requests-wsgi-adapter";
+  version = "0.4.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    hash = "sha256-WncJ6Qq/SdGB9sMqo3eUU39yXeD23UI2K8jIyQgSyHg=";
+  };
+
+  propagatedBuildInputs = [
+    requests
+  ];
+
+  # tests are not contained in pypi-release
+  doCheck = false;
+
+  meta = with lib; {
+    description = "WSGI Transport Adapter for Requests";
+    homepage = "https://github.com/seanbrant/requests-wsgi-adapter";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ betaboon ];
+  };
+}
diff --git a/pkgs/development/python-modules/unearth/default.nix b/pkgs/development/python-modules/unearth/default.nix
new file mode 100644
index 000000000000..c12074136930
--- /dev/null
+++ b/pkgs/development/python-modules/unearth/default.nix
@@ -0,0 +1,54 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pythonOlder
+
+, cached-property
+, packaging
+, pdm-pep517
+, requests
+
+, flask
+, pytest-httpserver
+, pytestCheckHook
+, requests-wsgi-adapter
+, trustme
+}:
+
+buildPythonPackage rec {
+  pname = "unearth";
+  version = "0.6.1";
+  format = "pyproject";
+  disabled = pythonOlder "3.7";
+
+  src = fetchPypi {
+    inherit pname version;
+    hash = "sha256-S3v719NKEWc9gN+uf6u/khwTmqx4OD+wyhapDTtTpm4=";
+  };
+
+  nativeBuildInputs = [
+    pdm-pep517
+  ];
+
+  propagatedBuildInputs = [
+    packaging
+    requests
+  ] ++ lib.optionals (pythonOlder "3.8") [
+    cached-property
+  ];
+
+  checkInputs = [
+    flask
+    pytest-httpserver
+    pytestCheckHook
+    requests-wsgi-adapter
+    trustme
+  ];
+
+  meta = with lib; {
+    homepage = "https://github.com/frostming/unearth";
+    description = "A utility to fetch and download python packages";
+    license = licenses.mit;
+    maintainers = with maintainers; [ betaboon ];
+  };
+}
diff --git a/pkgs/tools/package-management/pdm/check-update.patch b/pkgs/tools/package-management/pdm/check-update.patch
deleted file mode 100644
index 9bc216177e5b..000000000000
--- a/pkgs/tools/package-management/pdm/check-update.patch
+++ /dev/null
@@ -1,12 +0,0 @@
-diff --git a/tests/conftest.py b/tests/conftest.py
-index d310d36..e15d398 100644
---- a/tests/conftest.py
-+++ b/tests/conftest.py
-@@ -252,6 +252,7 @@ def project_no_init(tmp_path, mocker):
-     old_config_map = Config._config_map.copy()
-     tmp_path.joinpath("caches").mkdir(parents=True)
-     p.global_config["cache_dir"] = tmp_path.joinpath("caches").as_posix()
-+    p.global_config["check_update"] = False
-     do_use(p, getattr(sys, "_base_executable", sys.executable))
-     with temp_environ():
-         os.environ.pop("VIRTUAL_ENV", None)
diff --git a/pkgs/tools/package-management/pdm/default.nix b/pkgs/tools/package-management/pdm/default.nix
index 7458262b168a..29a39cf96614 100644
--- a/pkgs/tools/package-management/pdm/default.nix
+++ b/pkgs/tools/package-management/pdm/default.nix
@@ -24,28 +24,19 @@ in
 with python.pkgs;
 buildPythonApplication rec {
   pname = "pdm";
-  version = "1.14.0";
+  version = "2.1.2";
   format = "pyproject";
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-ZUbcuIRutSoHW5egCpwCKca2IZCgQsRAd72ueDzGySI=";
+    hash = "sha256-U8aXskq3PdIVXNhUTZ7TVRza4dexZoheHO1GO0aGneo=";
   };
 
-  # this patch allows us to run additional tests that invoke pdm, which checks
-  # itself for an update on every invocation by default, drammatically slowing
-  # down test runs inside the sandbox
-  #
-  # the patch is necessary because the fixture is creating a project and
-  # doesn't appear to respect the settings in `$HOME`; possibly a bug upstream
-  patches = [
-    ./check-update.patch
-  ];
-
   propagatedBuildInputs = [
     blinker
-    click
+    cachecontrol
+    certifi
     findpython
     installer
     packaging
@@ -54,12 +45,17 @@ buildPythonApplication rec {
     pip
     platformdirs
     python-dotenv
-    pythonfinder
+    requests-toolbelt
     resolvelib
+    rich
     shellingham
     tomli
     tomlkit
-  ] ++ lib.optionals (pythonOlder "3.8") [
+    unearth
+    virtualenv
+  ]
+  ++ cachecontrol.optional-dependencies.filecache
+  ++ lib.optionals (pythonOlder "3.8") [
     importlib-metadata
     typing-extensions
   ];
@@ -79,14 +75,11 @@ buildPythonApplication rec {
   '';
 
   disabledTests = [
-    # sys.executable and expected executable are different
-    "test_set_non_exist_python_path"
+    # fails to locate setuptools (maybe upstream bug)
+    "test_convert_setup_py_project"
     # pythonfinder isn't aware of nix's python infrastructure
-    "test_auto_isolate_site_packages"
     "test_use_wrapper_python"
-    "test_find_python_in_path"
-    # calls pip install and exits != 0
-    "test_pre_and_post_hooks"
+    "test_use_invalid_wrapper_python"
   ];
 
   meta = with lib; {
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 1b918a14b184..e0117f946f73 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -9489,6 +9489,8 @@ in {
 
   requests-unixsocket = callPackage ../development/python-modules/requests-unixsocket { };
 
+  requests-wsgi-adapter = callPackage ../development/python-modules/requests-wsgi-adapter { };
+
   requirements-detector = callPackage ../development/python-modules/requirements-detector { };
 
   requirements-parser = callPackage ../development/python-modules/requirements-parser { };
@@ -11248,6 +11250,8 @@ in {
 
   uncompyle6 = callPackage ../development/python-modules/uncompyle6 { };
 
+  unearth = callPackage ../development/python-modules/unearth { };
+
   unicodecsv = callPackage ../development/python-modules/unicodecsv { };
 
   unicodedata2 = callPackage ../development/python-modules/unicodedata2 { };