diff --git a/flupdt/cli.py b/flupdt/cli.py
index 6de67bc..ae5c15c 100644
--- a/flupdt/cli.py
+++ b/flupdt/cli.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
 import argparse
 
 
diff --git a/flupdt/common.py b/flupdt/common.py
new file mode 100644
index 0000000..fb76c94
--- /dev/null
+++ b/flupdt/common.py
@@ -0,0 +1,45 @@
+"""common."""
+
+import itertools
+import logging
+import sys
+
+
+def configure_logger(level: str = "INFO") -> None:
+    """Configure the logger.
+
+    Args:
+        level (str, optional): The logging level. Defaults to "INFO".
+    """
+    logging.basicConfig(
+        level=level,
+        datefmt="%Y-%m-%dT%H:%M:%S%z",
+        format="%(asctime)s %(levelname)s %(filename)s:%(lineno)d - %(message)s",
+        handlers=[logging.StreamHandler(sys.stdout)],
+    )
+
+def partition(predicate, iterable):
+    """Partition entries into false entries and true entries.
+
+    If *predicate* is slow, consider wrapping it with functools.lru_cache().
+    """
+    # partition(is_odd, range(10)) → 0 2 4 6 8   and  1 3 5 7 9
+    t1, t2 = itertools.tee(iterable)
+    return itertools.filterfalse(predicate, t1), filter(predicate, t2)
+
+def bash_wrapper(command: str, path: str = ".") -> tuple[str, str, int]:
+    """Execute a bash command and capture the output.
+
+    Args:
+        command (str): The bash command to be executed.
+        path (str): The current working directory, '.' by default
+
+    Returns:
+        Tuple[str, int]: A tuple containing the output of the command (stdout) as a string,
+        the error output (stderr) as a string (optional), and the return code as an integer.
+    """
+    # This is a acceptable risk
+    process = Popen(command.split(), stdout=PIPE, stderr=PIPE, cwd=path)  # noqa: S603
+    output, error = process.communicate()
+
+    return output.decode(), error.decode(), process.returncode
diff --git a/flupdt/flake_eval.py b/flupdt/flake_eval.py
index 7203e99..316caa3 100644
--- a/flupdt/flake_eval.py
+++ b/flupdt/flake_eval.py
@@ -1,8 +1,6 @@
-#!/usr/bin/env python3
-
 import logging
 from typing import Optional
-from rad_development_python import bash_wrapper
+from flupdt.common import bash_wrapper
 import re
 
 drv_re = re.compile(r".*(/nix/store/.*\.drv).*")
diff --git a/flupdt/flake_show.py b/flupdt/flake_show.py
index 1c53ce6..804028d 100644
--- a/flupdt/flake_show.py
+++ b/flupdt/flake_show.py
@@ -6,7 +6,7 @@ import re
 import shutil
 import typing
 
-from rad_development_python import bash_wrapper
+from flupdt.common import bash_wrapper
 
 output_regexes = [
     re.compile(r"checking derivation (.*)..."),
diff --git a/flupdt/main.py b/flupdt/main.py
index c5b287e..5525732 100644
--- a/flupdt/main.py
+++ b/flupdt/main.py
@@ -4,7 +4,6 @@ from flupdt.flake_show import get_derivations
 from flupdt.cli import parse_inputs
 from flupdt.flake_eval import evaluate_output
 import logging
-import rad_development_python as rd
 
 
 def main() -> None: