diff --git a/bin/spack b/bin/spack
index c5531f7b4a7..e64a378e873 100755
--- a/bin/spack
+++ b/bin/spack
@@ -25,7 +25,6 @@ exit 1
 # The code above runs this file with our preferred python interpreter.
 
 import os
-import os.path
 import sys
 
 min_python3 = (3, 6)
diff --git a/lib/spack/llnl/url.py b/lib/spack/llnl/url.py
index cbec1f73e35..af3eb384959 100644
--- a/lib/spack/llnl/url.py
+++ b/lib/spack/llnl/url.py
@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 """URL primitives that just require Python standard library."""
 import itertools
-import os.path
+import os
 import re
 from typing import Optional, Set, Tuple
 from urllib.parse import urlsplit, urlunsplit
diff --git a/lib/spack/spack/bootstrap/_common.py b/lib/spack/spack/bootstrap/_common.py
index 6a30869f272..2002f51339e 100644
--- a/lib/spack/spack/bootstrap/_common.py
+++ b/lib/spack/spack/bootstrap/_common.py
@@ -5,7 +5,7 @@
 import fnmatch
 import glob
 import importlib
-import os.path
+import os
 import re
 import sys
 import sysconfig
diff --git a/lib/spack/spack/bootstrap/config.py b/lib/spack/spack/bootstrap/config.py
index 8be32ea62b4..a81be057563 100644
--- a/lib/spack/spack/bootstrap/config.py
+++ b/lib/spack/spack/bootstrap/config.py
@@ -4,7 +4,7 @@
 """Manage configuration swapping for bootstrapping purposes"""
 
 import contextlib
-import os.path
+import os
 import sys
 from typing import Any, Dict, Generator, MutableSequence, Sequence
 
diff --git a/lib/spack/spack/bootstrap/core.py b/lib/spack/spack/bootstrap/core.py
index a4a997d25b3..65e4db6c9fc 100644
--- a/lib/spack/spack/bootstrap/core.py
+++ b/lib/spack/spack/bootstrap/core.py
@@ -25,7 +25,6 @@
 import functools
 import json
 import os
-import os.path
 import sys
 import uuid
 from typing import Any, Callable, Dict, List, Optional, Tuple
diff --git a/lib/spack/spack/build_systems/autotools.py b/lib/spack/spack/build_systems/autotools.py
index e1d771fef71..75b7a2f984d 100644
--- a/lib/spack/spack/build_systems/autotools.py
+++ b/lib/spack/spack/build_systems/autotools.py
@@ -2,7 +2,6 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 import os
-import os.path
 import stat
 import subprocess
 from typing import Callable, List, Optional, Set, Tuple, Union
diff --git a/lib/spack/spack/cmd/bootstrap.py b/lib/spack/spack/cmd/bootstrap.py
index 51f761b922e..84aec74328f 100644
--- a/lib/spack/spack/cmd/bootstrap.py
+++ b/lib/spack/spack/cmd/bootstrap.py
@@ -1,7 +1,7 @@
 # Copyright Spack Project Developers. See COPYRIGHT file for details.
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
-import os.path
+import os
 import shutil
 import sys
 import tempfile
diff --git a/lib/spack/spack/cmd/common/arguments.py b/lib/spack/spack/cmd/common/arguments.py
index 26a11943db9..41a7024d285 100644
--- a/lib/spack/spack/cmd/common/arguments.py
+++ b/lib/spack/spack/cmd/common/arguments.py
@@ -4,7 +4,7 @@
 
 
 import argparse
-import os.path
+import os
 import textwrap
 
 from llnl.util.lang import stable_partition
diff --git a/lib/spack/spack/cmd/containerize.py b/lib/spack/spack/cmd/containerize.py
index fd8dc35f347..27399710808 100644
--- a/lib/spack/spack/cmd/containerize.py
+++ b/lib/spack/spack/cmd/containerize.py
@@ -2,7 +2,6 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 import os
-import os.path
 
 import llnl.util.tty
 
diff --git a/lib/spack/spack/cmd/modules/__init__.py b/lib/spack/spack/cmd/modules/__init__.py
index caa5c93664f..aaeab96af25 100644
--- a/lib/spack/spack/cmd/modules/__init__.py
+++ b/lib/spack/spack/cmd/modules/__init__.py
@@ -5,7 +5,7 @@
 """Implementation details of the ``spack module`` command."""
 
 import collections
-import os.path
+import os
 import shutil
 import sys
 
diff --git a/lib/spack/spack/cmd/tutorial.py b/lib/spack/spack/cmd/tutorial.py
index b6d65863dc6..16b974b4b8b 100644
--- a/lib/spack/spack/cmd/tutorial.py
+++ b/lib/spack/spack/cmd/tutorial.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 import shutil
 
 import llnl.util.tty as tty
diff --git a/lib/spack/spack/cmd/unit_test.py b/lib/spack/spack/cmd/unit_test.py
index be03de7496e..5635ff560a6 100644
--- a/lib/spack/spack/cmd/unit_test.py
+++ b/lib/spack/spack/cmd/unit_test.py
@@ -5,7 +5,7 @@
 import argparse
 import collections
 import io
-import os.path
+import os
 import re
 import sys
 
diff --git a/lib/spack/spack/container/images.py b/lib/spack/spack/container/images.py
index 86b8c0bec72..ad00090ee77 100644
--- a/lib/spack/spack/container/images.py
+++ b/lib/spack/spack/container/images.py
@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 """Manages the details on the images used in the various stages."""
 import json
-import os.path
+import os
 import shlex
 import sys
 
diff --git a/lib/spack/spack/detection/common.py b/lib/spack/spack/detection/common.py
index ffa1e8fb680..d3ac3add7e1 100644
--- a/lib/spack/spack/detection/common.py
+++ b/lib/spack/spack/detection/common.py
@@ -15,7 +15,6 @@
 import glob
 import itertools
 import os
-import os.path
 import pathlib
 import re
 import sys
diff --git a/lib/spack/spack/detection/path.py b/lib/spack/spack/detection/path.py
index 0f72f8da4d5..d3fed2180f4 100644
--- a/lib/spack/spack/detection/path.py
+++ b/lib/spack/spack/detection/path.py
@@ -7,7 +7,6 @@
 import collections
 import concurrent.futures
 import os
-import os.path
 import re
 import sys
 import traceback
diff --git a/lib/spack/spack/directives.py b/lib/spack/spack/directives.py
index 7b4937b5099..affd9fce69a 100644
--- a/lib/spack/spack/directives.py
+++ b/lib/spack/spack/directives.py
@@ -32,7 +32,7 @@ class OpenMpi(Package):
 """
 import collections
 import collections.abc
-import os.path
+import os
 import re
 from typing import Any, Callable, List, Optional, Tuple, Type, Union
 
diff --git a/lib/spack/spack/fetch_strategy.py b/lib/spack/spack/fetch_strategy.py
index de94e8a356f..a7cfaaf2930 100644
--- a/lib/spack/spack/fetch_strategy.py
+++ b/lib/spack/spack/fetch_strategy.py
@@ -25,7 +25,6 @@
 import functools
 import http.client
 import os
-import os.path
 import re
 import shutil
 import urllib.error
diff --git a/lib/spack/spack/main.py b/lib/spack/spack/main.py
index 07a58df3e1b..33fb308adb4 100644
--- a/lib/spack/spack/main.py
+++ b/lib/spack/spack/main.py
@@ -14,7 +14,6 @@
 import io
 import operator
 import os
-import os.path
 import pstats
 import re
 import shlex
diff --git a/lib/spack/spack/mirrors/layout.py b/lib/spack/spack/mirrors/layout.py
index 96867832e02..9b899762179 100644
--- a/lib/spack/spack/mirrors/layout.py
+++ b/lib/spack/spack/mirrors/layout.py
@@ -2,7 +2,6 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 import os
-import os.path
 from typing import Optional
 
 import llnl.url
diff --git a/lib/spack/spack/mirrors/utils.py b/lib/spack/spack/mirrors/utils.py
index 8fadd211fd7..7e3a62b0513 100644
--- a/lib/spack/spack/mirrors/utils.py
+++ b/lib/spack/spack/mirrors/utils.py
@@ -2,7 +2,6 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 import os
-import os.path
 import traceback
 
 import llnl.util.tty as tty
diff --git a/lib/spack/spack/modules/common.py b/lib/spack/spack/modules/common.py
index 0d1ef70127e..2ce05a818f4 100644
--- a/lib/spack/spack/modules/common.py
+++ b/lib/spack/spack/modules/common.py
@@ -31,7 +31,7 @@
 import copy
 import datetime
 import inspect
-import os.path
+import os
 import re
 import string
 from typing import List, Optional
diff --git a/lib/spack/spack/modules/lmod.py b/lib/spack/spack/modules/lmod.py
index 7373b3c7d1f..1450c4b99f7 100644
--- a/lib/spack/spack/modules/lmod.py
+++ b/lib/spack/spack/modules/lmod.py
@@ -4,7 +4,7 @@
 
 import collections
 import itertools
-import os.path
+import os
 from typing import Dict, List, Optional, Tuple
 
 import llnl.util.filesystem as fs
diff --git a/lib/spack/spack/modules/tcl.py b/lib/spack/spack/modules/tcl.py
index b40f14dfcd3..78542b2568c 100644
--- a/lib/spack/spack/modules/tcl.py
+++ b/lib/spack/spack/modules/tcl.py
@@ -5,7 +5,7 @@
 """This module implements the classes necessary to generate Tcl
 non-hierarchical modules.
 """
-import os.path
+import os
 from typing import Dict, Optional, Tuple
 
 import spack.config
diff --git a/lib/spack/spack/patch.py b/lib/spack/spack/patch.py
index 7affdaba2fe..a909bca1056 100644
--- a/lib/spack/spack/patch.py
+++ b/lib/spack/spack/patch.py
@@ -4,7 +4,6 @@
 
 import hashlib
 import os
-import os.path
 import pathlib
 import sys
 from typing import Any, Dict, Optional, Tuple, Type, Union
diff --git a/lib/spack/spack/platforms/cray.py b/lib/spack/spack/platforms/cray.py
index f47ae448a8c..fc907b4d6e5 100644
--- a/lib/spack/spack/platforms/cray.py
+++ b/lib/spack/spack/platforms/cray.py
@@ -1,7 +1,7 @@
 # Copyright Spack Project Developers. See COPYRIGHT file for details.
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
-import os.path
+import os
 
 
 def slingshot_network():
diff --git a/lib/spack/spack/repo.py b/lib/spack/spack/repo.py
index 0924dcad05f..62aaafaf638 100644
--- a/lib/spack/spack/repo.py
+++ b/lib/spack/spack/repo.py
@@ -14,7 +14,6 @@
 import inspect
 import itertools
 import os
-import os.path
 import random
 import re
 import shutil
diff --git a/lib/spack/spack/reporters/cdash.py b/lib/spack/spack/reporters/cdash.py
index a01634fd831..edc2696ec50 100644
--- a/lib/spack/spack/reporters/cdash.py
+++ b/lib/spack/spack/reporters/cdash.py
@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 import collections
 import hashlib
-import os.path
+import os
 import platform
 import posixpath
 import re
diff --git a/lib/spack/spack/reporters/junit.py b/lib/spack/spack/reporters/junit.py
index 9d6f6197cfb..968726dc643 100644
--- a/lib/spack/spack/reporters/junit.py
+++ b/lib/spack/spack/reporters/junit.py
@@ -1,7 +1,7 @@
 # Copyright Spack Project Developers. See COPYRIGHT file for details.
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
-import os.path
+import os
 
 import spack.tengine
 
diff --git a/lib/spack/spack/test/build_distribution.py b/lib/spack/spack/test/build_distribution.py
index aad12c88181..647c794c645 100644
--- a/lib/spack/spack/test/build_distribution.py
+++ b/lib/spack/spack/test/build_distribution.py
@@ -3,7 +3,6 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 import os
-import os.path
 
 import pytest
 
diff --git a/lib/spack/spack/test/builder.py b/lib/spack/spack/test/builder.py
index cf652c1f1d4..bfcd49a4de1 100644
--- a/lib/spack/spack/test/builder.py
+++ b/lib/spack/spack/test/builder.py
@@ -1,7 +1,7 @@
 # Copyright Spack Project Developers. See COPYRIGHT file for details.
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
-import os.path
+import os
 
 import pytest
 
diff --git a/lib/spack/spack/test/cmd/bootstrap.py b/lib/spack/spack/test/cmd/bootstrap.py
index 33166433833..0796815c8ef 100644
--- a/lib/spack/spack/test/cmd/bootstrap.py
+++ b/lib/spack/spack/test/cmd/bootstrap.py
@@ -1,7 +1,7 @@
 # Copyright Spack Project Developers. See COPYRIGHT file for details.
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
-import os.path
+import os
 import sys
 
 import pytest
diff --git a/lib/spack/spack/test/cmd/debug.py b/lib/spack/spack/test/cmd/debug.py
index 9014e672a83..33944fbc6f8 100644
--- a/lib/spack/spack/test/cmd/debug.py
+++ b/lib/spack/spack/test/cmd/debug.py
@@ -3,7 +3,6 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 import os
-import os.path
 import platform
 
 import pytest
diff --git a/lib/spack/spack/test/cmd/external.py b/lib/spack/spack/test/cmd/external.py
index 4fca0ecb037..7c4b871d6b9 100644
--- a/lib/spack/spack/test/cmd/external.py
+++ b/lib/spack/spack/test/cmd/external.py
@@ -2,7 +2,6 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 import os
-import os.path
 import sys
 
 import pytest
diff --git a/lib/spack/spack/test/cmd/license.py b/lib/spack/spack/test/cmd/license.py
index 1ece95940d1..f516fcc53e9 100644
--- a/lib/spack/spack/test/cmd/license.py
+++ b/lib/spack/spack/test/cmd/license.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 import re
 
 import pytest
diff --git a/lib/spack/spack/test/cmd/list.py b/lib/spack/spack/test/cmd/list.py
index 559f481846c..3f9266645d4 100644
--- a/lib/spack/spack/test/cmd/list.py
+++ b/lib/spack/spack/test/cmd/list.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 import sys
 from textwrap import dedent
 
diff --git a/lib/spack/spack/test/cmd/module.py b/lib/spack/spack/test/cmd/module.py
index 0c68d619221..271159fd8dd 100644
--- a/lib/spack/spack/test/cmd/module.py
+++ b/lib/spack/spack/test/cmd/module.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 import re
 
 import pytest
diff --git a/lib/spack/spack/test/cmd/repo.py b/lib/spack/spack/test/cmd/repo.py
index 02878ec9755..3cb35ef09e4 100644
--- a/lib/spack/spack/test/cmd/repo.py
+++ b/lib/spack/spack/test/cmd/repo.py
@@ -1,7 +1,7 @@
 # Copyright Spack Project Developers. See COPYRIGHT file for details.
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
-import os.path
+import os
 
 import pytest
 
diff --git a/lib/spack/spack/test/cmd/view.py b/lib/spack/spack/test/cmd/view.py
index bc774a3dbc7..1ff3556a871 100644
--- a/lib/spack/spack/test/cmd/view.py
+++ b/lib/spack/spack/test/cmd/view.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 import sys
 
 import pytest
diff --git a/lib/spack/spack/test/conftest.py b/lib/spack/spack/test/conftest.py
index 49441ca823f..f907c6c54ff 100644
--- a/lib/spack/spack/test/conftest.py
+++ b/lib/spack/spack/test/conftest.py
@@ -12,7 +12,6 @@
 import itertools
 import json
 import os
-import os.path
 import pathlib
 import re
 import shutil
diff --git a/lib/spack/spack/test/container/images.py b/lib/spack/spack/test/container/images.py
index 958a9016ec4..0a2836c17b8 100644
--- a/lib/spack/spack/test/container/images.py
+++ b/lib/spack/spack/test/container/images.py
@@ -1,7 +1,7 @@
 # Copyright Spack Project Developers. See COPYRIGHT file for details.
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
-import os.path
+import os
 
 import pytest
 
diff --git a/lib/spack/spack/test/directory_layout.py b/lib/spack/spack/test/directory_layout.py
index 533700de9d7..08c4166a76a 100644
--- a/lib/spack/spack/test/directory_layout.py
+++ b/lib/spack/spack/test/directory_layout.py
@@ -6,7 +6,6 @@
 This test verifies that the Spack directory layout works properly.
 """
 import os
-import os.path
 from pathlib import Path
 
 import pytest
diff --git a/lib/spack/spack/test/llnl/util/file_list.py b/lib/spack/spack/test/llnl/util/file_list.py
index 587d5d3a7dc..6c4f256f060 100644
--- a/lib/spack/spack/test/llnl/util/file_list.py
+++ b/lib/spack/spack/test/llnl/util/file_list.py
@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 import fnmatch
-import os.path
+import os
 import sys
 
 import pytest
diff --git a/lib/spack/spack/test/llnl/util/lang.py b/lib/spack/spack/test/llnl/util/lang.py
index 1701cbc290b..728119e31aa 100644
--- a/lib/spack/spack/test/llnl/util/lang.py
+++ b/lib/spack/spack/test/llnl/util/lang.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 import re
 import sys
 from datetime import datetime, timedelta
@@ -23,7 +23,7 @@ def now():
 def module_path(tmpdir):
     m = tmpdir.join("foo.py")
     content = """
-import os.path
+import os
 
 value = 1
 path = os.path.join('/usr', 'bin')
diff --git a/lib/spack/spack/test/schema.py b/lib/spack/spack/test/schema.py
index fcbe2eb59de..d712576cc71 100644
--- a/lib/spack/spack/test/schema.py
+++ b/lib/spack/spack/test/schema.py
@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 import json
-import os.path
+import os
 
 import jsonschema
 import pytest
diff --git a/lib/spack/spack/test/util/util_url.py b/lib/spack/spack/test/util/util_url.py
index 3c7063c0c43..c859e05ddad 100644
--- a/lib/spack/spack/test/util/util_url.py
+++ b/lib/spack/spack/test/util/util_url.py
@@ -4,7 +4,6 @@
 
 """Test Spack's URL handling utility functions."""
 import os
-import os.path
 import urllib.parse
 
 import pytest
diff --git a/lib/spack/spack/util/environment.py b/lib/spack/spack/util/environment.py
index abff28d30ea..a22351a2ffe 100644
--- a/lib/spack/spack/util/environment.py
+++ b/lib/spack/spack/util/environment.py
@@ -7,7 +7,6 @@
 import inspect
 import json
 import os
-import os.path
 import pickle
 import re
 import shlex
diff --git a/lib/spack/spack/util/libc.py b/lib/spack/spack/util/libc.py
index 54ef2eab47c..d38cd8158b0 100644
--- a/lib/spack/spack/util/libc.py
+++ b/lib/spack/spack/util/libc.py
@@ -3,7 +3,6 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 import os
-import os.path
 import re
 import shlex
 import sys
diff --git a/lib/spack/spack/util/web.py b/lib/spack/spack/util/web.py
index ce42af9b4a9..9c4f48d2e6f 100644
--- a/lib/spack/spack/util/web.py
+++ b/lib/spack/spack/util/web.py
@@ -7,7 +7,6 @@
 import errno
 import json
 import os
-import os.path
 import re
 import shutil
 import ssl
diff --git a/var/spack/repos/builtin.mock/packages/extension1/package.py b/var/spack/repos/builtin.mock/packages/extension1/package.py
index 5ba3cf7a197..8598338d430 100644
--- a/var/spack/repos/builtin.mock/packages/extension1/package.py
+++ b/var/spack/repos/builtin.mock/packages/extension1/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin.mock/packages/extension2/package.py b/var/spack/repos/builtin.mock/packages/extension2/package.py
index 8357cb82ab8..85a1f37a358 100644
--- a/var/spack/repos/builtin.mock/packages/extension2/package.py
+++ b/var/spack/repos/builtin.mock/packages/extension2/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin.mock/packages/libtool-deletion/package.py b/var/spack/repos/builtin.mock/packages/libtool-deletion/package.py
index c9031f10ab5..36391b3f29f 100644
--- a/var/spack/repos/builtin.mock/packages/libtool-deletion/package.py
+++ b/var/spack/repos/builtin.mock/packages/libtool-deletion/package.py
@@ -1,7 +1,7 @@
 # Copyright Spack Project Developers. See COPYRIGHT file for details.
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
-import os.path
+import os
 
 import spack.build_systems.autotools
 from spack.package import *
diff --git a/var/spack/repos/builtin.mock/packages/perl-extension/package.py b/var/spack/repos/builtin.mock/packages/perl-extension/package.py
index ee5ee8a55b1..0ff499184c8 100644
--- a/var/spack/repos/builtin.mock/packages/perl-extension/package.py
+++ b/var/spack/repos/builtin.mock/packages/perl-extension/package.py
@@ -1,7 +1,7 @@
 # Copyright Spack Project Developers. See COPYRIGHT file for details.
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin.mock/packages/py-extension1/package.py b/var/spack/repos/builtin.mock/packages/py-extension1/package.py
index 8923349aef4..c6f7713a08f 100644
--- a/var/spack/repos/builtin.mock/packages/py-extension1/package.py
+++ b/var/spack/repos/builtin.mock/packages/py-extension1/package.py
@@ -1,7 +1,7 @@
 # Copyright Spack Project Developers. See COPYRIGHT file for details.
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin.mock/packages/py-extension2/package.py b/var/spack/repos/builtin.mock/packages/py-extension2/package.py
index ec4486f05fe..f87f2950846 100644
--- a/var/spack/repos/builtin.mock/packages/py-extension2/package.py
+++ b/var/spack/repos/builtin.mock/packages/py-extension2/package.py
@@ -1,7 +1,7 @@
 # Copyright Spack Project Developers. See COPYRIGHT file for details.
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin.mock/packages/view-not-ignored/package.py b/var/spack/repos/builtin.mock/packages/view-not-ignored/package.py
index 15de0dc5289..c24305568a9 100644
--- a/var/spack/repos/builtin.mock/packages/view-not-ignored/package.py
+++ b/var/spack/repos/builtin.mock/packages/view-not-ignored/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/ampliconnoise/package.py b/var/spack/repos/builtin/packages/ampliconnoise/package.py
index 53dcc2f545b..cb20ccc542c 100644
--- a/var/spack/repos/builtin/packages/ampliconnoise/package.py
+++ b/var/spack/repos/builtin/packages/ampliconnoise/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/aperture-photometry/package.py b/var/spack/repos/builtin/packages/aperture-photometry/package.py
index d79d623ac0a..3df49348746 100644
--- a/var/spack/repos/builtin/packages/aperture-photometry/package.py
+++ b/var/spack/repos/builtin/packages/aperture-photometry/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/asio/package.py b/var/spack/repos/builtin/packages/asio/package.py
index 532446a07a0..068a7d7643f 100644
--- a/var/spack/repos/builtin/packages/asio/package.py
+++ b/var/spack/repos/builtin/packages/asio/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/astral/package.py b/var/spack/repos/builtin/packages/astral/package.py
index f81d044ff46..789ab126cab 100644
--- a/var/spack/repos/builtin/packages/astral/package.py
+++ b/var/spack/repos/builtin/packages/astral/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/beagle/package.py b/var/spack/repos/builtin/packages/beagle/package.py
index 1ad102805f5..2a166b2e3c5 100644
--- a/var/spack/repos/builtin/packages/beagle/package.py
+++ b/var/spack/repos/builtin/packages/beagle/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/bref3/package.py b/var/spack/repos/builtin/packages/bref3/package.py
index 00796570018..0b40ca527c1 100644
--- a/var/spack/repos/builtin/packages/bref3/package.py
+++ b/var/spack/repos/builtin/packages/bref3/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/cp2k/package.py b/var/spack/repos/builtin/packages/cp2k/package.py
index c80959d5990..135635736f6 100644
--- a/var/spack/repos/builtin/packages/cp2k/package.py
+++ b/var/spack/repos/builtin/packages/cp2k/package.py
@@ -3,7 +3,6 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 import copy
 import os
-import os.path
 import sys
 
 import spack.util.environment
diff --git a/var/spack/repos/builtin/packages/cromwell-womtool/package.py b/var/spack/repos/builtin/packages/cromwell-womtool/package.py
index 6e75f9ee180..dda9e14cd56 100644
--- a/var/spack/repos/builtin/packages/cromwell-womtool/package.py
+++ b/var/spack/repos/builtin/packages/cromwell-womtool/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/cromwell/package.py b/var/spack/repos/builtin/packages/cromwell/package.py
index 22ef937364e..99566a1c986 100644
--- a/var/spack/repos/builtin/packages/cromwell/package.py
+++ b/var/spack/repos/builtin/packages/cromwell/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/dyninst/package.py b/var/spack/repos/builtin/packages/dyninst/package.py
index 0d260321018..ebf0604070a 100644
--- a/var/spack/repos/builtin/packages/dyninst/package.py
+++ b/var/spack/repos/builtin/packages/dyninst/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/elfutils/package.py b/var/spack/repos/builtin/packages/elfutils/package.py
index ea5121f10de..d6df0f0e578 100644
--- a/var/spack/repos/builtin/packages/elfutils/package.py
+++ b/var/spack/repos/builtin/packages/elfutils/package.py
@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 import glob
-import os.path
+import os
 
 from spack.package import *
 from spack.util.environment import is_system_path
diff --git a/var/spack/repos/builtin/packages/elsi/package.py b/var/spack/repos/builtin/packages/elsi/package.py
index 24414f2a860..a1e358c9e99 100644
--- a/var/spack/repos/builtin/packages/elsi/package.py
+++ b/var/spack/repos/builtin/packages/elsi/package.py
@@ -1,7 +1,7 @@
 # Copyright Spack Project Developers. See COPYRIGHT file for details.
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/express/package.py b/var/spack/repos/builtin/packages/express/package.py
index 32a36e6df64..099f1d54863 100644
--- a/var/spack/repos/builtin/packages/express/package.py
+++ b/var/spack/repos/builtin/packages/express/package.py
@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 import glob
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/fftw/package.py b/var/spack/repos/builtin/packages/fftw/package.py
index 2ec990097a4..938f6eb88d5 100644
--- a/var/spack/repos/builtin/packages/fftw/package.py
+++ b/var/spack/repos/builtin/packages/fftw/package.py
@@ -3,7 +3,6 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 import os
-import os.path
 
 import llnl.util.lang
 
diff --git a/var/spack/repos/builtin/packages/fftx/package.py b/var/spack/repos/builtin/packages/fftx/package.py
index c8103c39ae3..4477a965284 100644
--- a/var/spack/repos/builtin/packages/fftx/package.py
+++ b/var/spack/repos/builtin/packages/fftx/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/gatk/package.py b/var/spack/repos/builtin/packages/gatk/package.py
index ba16eb335fe..fb2c1b0a59b 100644
--- a/var/spack/repos/builtin/packages/gatk/package.py
+++ b/var/spack/repos/builtin/packages/gatk/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/glib/package.py b/var/spack/repos/builtin/packages/glib/package.py
index 4053cb4c493..9bbd5919434 100644
--- a/var/spack/repos/builtin/packages/glib/package.py
+++ b/var/spack/repos/builtin/packages/glib/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 import spack.build_systems.autotools
 import spack.build_systems.meson
diff --git a/var/spack/repos/builtin/packages/globalarrays/package.py b/var/spack/repos/builtin/packages/globalarrays/package.py
index 6e6c64d234b..89b42c48fe3 100644
--- a/var/spack/repos/builtin/packages/globalarrays/package.py
+++ b/var/spack/repos/builtin/packages/globalarrays/package.py
@@ -1,7 +1,7 @@
 # Copyright Spack Project Developers. See COPYRIGHT file for details.
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/grackle/package.py b/var/spack/repos/builtin/packages/grackle/package.py
index 2acc1b1c10a..6dd2c670402 100644
--- a/var/spack/repos/builtin/packages/grackle/package.py
+++ b/var/spack/repos/builtin/packages/grackle/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.hooks.sbang import filter_shebang
 from spack.package import *
diff --git a/var/spack/repos/builtin/packages/haploview/package.py b/var/spack/repos/builtin/packages/haploview/package.py
index d811b449bb2..3843ae68308 100644
--- a/var/spack/repos/builtin/packages/haploview/package.py
+++ b/var/spack/repos/builtin/packages/haploview/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/hpcviewer/package.py b/var/spack/repos/builtin/packages/hpcviewer/package.py
index 752d65d9a10..3b336fb754e 100644
--- a/var/spack/repos/builtin/packages/hpcviewer/package.py
+++ b/var/spack/repos/builtin/packages/hpcviewer/package.py
@@ -3,7 +3,6 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 import os
-import os.path
 import platform
 
 from spack.package import *
diff --git a/var/spack/repos/builtin/packages/jmol/package.py b/var/spack/repos/builtin/packages/jmol/package.py
index bc212924af2..e0c87d5a8fc 100644
--- a/var/spack/repos/builtin/packages/jmol/package.py
+++ b/var/spack/repos/builtin/packages/jmol/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/jq/package.py b/var/spack/repos/builtin/packages/jq/package.py
index 641403846e1..098963a74fc 100644
--- a/var/spack/repos/builtin/packages/jq/package.py
+++ b/var/spack/repos/builtin/packages/jq/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 import sys
 
 from spack.package import *
diff --git a/var/spack/repos/builtin/packages/kokkos/package.py b/var/spack/repos/builtin/packages/kokkos/package.py
index e884362c7e0..646184ab321 100644
--- a/var/spack/repos/builtin/packages/kokkos/package.py
+++ b/var/spack/repos/builtin/packages/kokkos/package.py
@@ -1,7 +1,7 @@
 # Copyright Spack Project Developers. See COPYRIGHT file for details.
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
-import os.path
+import os
 
 import llnl.util.lang as lang
 
diff --git a/var/spack/repos/builtin/packages/linux-perf/package.py b/var/spack/repos/builtin/packages/linux-perf/package.py
index 8fceb6e11d3..0642088dd5d 100644
--- a/var/spack/repos/builtin/packages/linux-perf/package.py
+++ b/var/spack/repos/builtin/packages/linux-perf/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 import re
 import shutil
 from textwrap import dedent
diff --git a/var/spack/repos/builtin/packages/llvm-doe/package.py b/var/spack/repos/builtin/packages/llvm-doe/package.py
index 602f41d38b5..fea3f2825cf 100644
--- a/var/spack/repos/builtin/packages/llvm-doe/package.py
+++ b/var/spack/repos/builtin/packages/llvm-doe/package.py
@@ -2,7 +2,6 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 import os
-import os.path
 import re
 import sys
 
diff --git a/var/spack/repos/builtin/packages/llvm/package.py b/var/spack/repos/builtin/packages/llvm/package.py
index 8a9474f6c0b..7db9dcb6f93 100644
--- a/var/spack/repos/builtin/packages/llvm/package.py
+++ b/var/spack/repos/builtin/packages/llvm/package.py
@@ -2,7 +2,6 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 import os
-import os.path
 import re
 import sys
 
diff --git a/var/spack/repos/builtin/packages/mvapich2/package.py b/var/spack/repos/builtin/packages/mvapich2/package.py
index e509843534c..f4f242965b3 100644
--- a/var/spack/repos/builtin/packages/mvapich2/package.py
+++ b/var/spack/repos/builtin/packages/mvapich2/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 import re
 import sys
 
diff --git a/var/spack/repos/builtin/packages/octave/package.py b/var/spack/repos/builtin/packages/octave/package.py
index 98d58968ed3..494f025be2f 100644
--- a/var/spack/repos/builtin/packages/octave/package.py
+++ b/var/spack/repos/builtin/packages/octave/package.py
@@ -1,7 +1,7 @@
 # Copyright Spack Project Developers. See COPYRIGHT file for details.
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
-import os.path
+import os
 import re
 import shutil
 import sys
diff --git a/var/spack/repos/builtin/packages/oommf/package.py b/var/spack/repos/builtin/packages/oommf/package.py
index b2a5bfae283..d8e6dec46b7 100644
--- a/var/spack/repos/builtin/packages/oommf/package.py
+++ b/var/spack/repos/builtin/packages/oommf/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/pgdspider/package.py b/var/spack/repos/builtin/packages/pgdspider/package.py
index a891952117a..1df00aef1bd 100644
--- a/var/spack/repos/builtin/packages/pgdspider/package.py
+++ b/var/spack/repos/builtin/packages/pgdspider/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/picard/package.py b/var/spack/repos/builtin/packages/picard/package.py
index e9befc08325..f5da7fd82a3 100644
--- a/var/spack/repos/builtin/packages/picard/package.py
+++ b/var/spack/repos/builtin/packages/picard/package.py
@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 import glob
-import os.path
+import os
 import re
 
 from spack.package import *
diff --git a/var/spack/repos/builtin/packages/pilon/package.py b/var/spack/repos/builtin/packages/pilon/package.py
index b2af507068e..5e374f9ec9c 100644
--- a/var/spack/repos/builtin/packages/pilon/package.py
+++ b/var/spack/repos/builtin/packages/pilon/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/plumed/package.py b/var/spack/repos/builtin/packages/plumed/package.py
index b5d20755914..2c24d42c36c 100644
--- a/var/spack/repos/builtin/packages/plumed/package.py
+++ b/var/spack/repos/builtin/packages/plumed/package.py
@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 import collections
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/qorts/package.py b/var/spack/repos/builtin/packages/qorts/package.py
index d5586116cad..8a811acda69 100644
--- a/var/spack/repos/builtin/packages/qorts/package.py
+++ b/var/spack/repos/builtin/packages/qorts/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/rna-seqc/package.py b/var/spack/repos/builtin/packages/rna-seqc/package.py
index 010d4cb566b..12ab75429cd 100644
--- a/var/spack/repos/builtin/packages/rna-seqc/package.py
+++ b/var/spack/repos/builtin/packages/rna-seqc/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/snpeff/package.py b/var/spack/repos/builtin/packages/snpeff/package.py
index c13afba0b52..c4e0a58cf43 100644
--- a/var/spack/repos/builtin/packages/snpeff/package.py
+++ b/var/spack/repos/builtin/packages/snpeff/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/suite-sparse/package.py b/var/spack/repos/builtin/packages/suite-sparse/package.py
index 39aa3f98382..389f312493b 100644
--- a/var/spack/repos/builtin/packages/suite-sparse/package.py
+++ b/var/spack/repos/builtin/packages/suite-sparse/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/tinyxml/package.py b/var/spack/repos/builtin/packages/tinyxml/package.py
index 3c91b5cefd0..b3b706bc603 100644
--- a/var/spack/repos/builtin/packages/tinyxml/package.py
+++ b/var/spack/repos/builtin/packages/tinyxml/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/trimmomatic/package.py b/var/spack/repos/builtin/packages/trimmomatic/package.py
index 07b2855b338..4bb6662d30f 100644
--- a/var/spack/repos/builtin/packages/trimmomatic/package.py
+++ b/var/spack/repos/builtin/packages/trimmomatic/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/varscan/package.py b/var/spack/repos/builtin/packages/varscan/package.py
index 5d60d0ecbbd..a693e3df377 100644
--- a/var/spack/repos/builtin/packages/varscan/package.py
+++ b/var/spack/repos/builtin/packages/varscan/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *
 
diff --git a/var/spack/repos/builtin/packages/wannier90/package.py b/var/spack/repos/builtin/packages/wannier90/package.py
index ab268635ccb..47874c433a8 100644
--- a/var/spack/repos/builtin/packages/wannier90/package.py
+++ b/var/spack/repos/builtin/packages/wannier90/package.py
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-import os.path
+import os
 
 from spack.package import *