diff --git a/mpsd-software-environment.py b/mpsd-software-environment.py
index 1c26789a50395b979e1d6b8f0a8a58bcd0c2a634..efdd2c47fab1192fe5f0fd6810419c353e6e75da 100755
--- a/mpsd-software-environment.py
+++ b/mpsd-software-environment.py
@@ -1,7 +1,6 @@
 #!/usr/bin/env python3
 import os
 import subprocess
-import time
 import datetime
 import argparse
 import sys
@@ -241,7 +240,7 @@ def install_environment(
 
     # Set required variables
     release_base_dir = script_dir / mpsd_release
-    mpsd_os = os.environ.get("MPSD_OS", "UNKNOWN_OS")
+    os.environ.get("MPSD_OS", "UNKNOWN_OS")
     mpsd_microarch = os.environ.get("MPSD_MICROARCH", "UNKNOWN_MICROARCH")
     toolchain_dir = release_base_dir / mpsd_microarch
     toolchain_dir.mkdir(parents=True, exist_ok=True)
diff --git a/tests.py b/tests.py
index 4cac5a0565bcaf3f229207088bf38eaad66e254e..73b881bb9b18d24d0d714628baff94f09f7a3e69 100644
--- a/tests.py
+++ b/tests.py
@@ -2,7 +2,6 @@ import os
 import pytest
 import importlib
 import subprocess
-import time
 import shutil
 from pathlib import Path
 
@@ -73,7 +72,6 @@ def test_setup_log_cmd(tmp_path):
     log_file = "install.log"
 
     script_dir = tmp_path / "test_prepare_env"
-    spack_environments = "spack-environments"
     mpsd_release_to_test = "dev-23a"
     release_base_dir = script_dir / mpsd_release_to_test
     if os.path.exists(release_base_dir / log_file):
@@ -82,9 +80,7 @@ def test_setup_log_cmd(tmp_path):
         initial_bytes = 0
 
     # run the prepare_env functionality
-    result = mod.prepare_environment(
-        mpsd_release=mpsd_release_to_test, script_dir=(script_dir)
-    )
+    mod.prepare_environment(mpsd_release=mpsd_release_to_test, script_dir=(script_dir))
 
     # check that logs/install-software-environment.log is updated
     assert os.path.exists(release_base_dir / log_file)
@@ -122,14 +118,11 @@ def test_install_environment(tmp_path):
     if script_dir.exists():
         shutil.rmtree(script_dir)
     script_dir.mkdir(exist_ok=True, parents=True)
-    spack_environments = "spack-environments"
     mpsd_release_to_test = "dev-23a"
     toolchain_to_test = "global_generic"
     mpsd_microarch = os.getenv("MPSD_MICROARCH", "UNKNOWN_MICROARCH")
     release_base_dir = script_dir / mpsd_release_to_test
-    prepare_result = mod.prepare_environment(
-        mpsd_release=mpsd_release_to_test, script_dir=(script_dir)
-    )
+    mod.prepare_environment(mpsd_release=mpsd_release_to_test, script_dir=(script_dir))
     # Patch the spack environments to create a fake global_generic
     # create a test toolchain
     toolchain_src_dir = release_base_dir / "spack-environments" / "toolchains"
@@ -165,7 +158,7 @@ def test_install_environment(tmp_path):
     with open(setup_file, "w") as f:
         f.write(lines)
     # install global_generic toolchain
-    install_result = mod.install_environment(
+    mod.install_environment(
         mpsd_release=mpsd_release_to_test,
         toolchains=[toolchain_to_test],
         script_dir=script_dir,
@@ -192,7 +185,7 @@ def test_install_environment(tmp_path):
     assert os.path.exists(release_base_dir / "install.log")
 
     # assert that the build log is written to the install log file
-    build_log_file_name = os.path.basename(build_log)
+    os.path.basename(build_log)
     with open(release_base_dir / "install.log", "r") as f:
         lines = f.read()
         assert (