diff --git a/mmgen/cfg.py b/mmgen/cfg.py
index 53e763cf..11af2b66 100755
--- a/mmgen/cfg.py
+++ b/mmgen/cfg.py
@@ -35,7 +35,7 @@ def die2(exit_val, s):
 class GlobalConstants(Lockable):
 	"""
 	These values are non-runtime-configurable.  They’re constant for a given machine,
-	user, executable and MMGen release.
+	user, executable and MMGen Wallet version
 	"""
 	_autolock = True
 
@@ -367,6 +367,7 @@ class Config(Lockable):
 		'MMGEN_ENABLE_ERIGON',
 		'MMGEN_DISABLE_COLOR',
 	)
+
 	_infile_opts = (
 		'keys_from_file',
 		'mmgen_keys_from_file',
@@ -375,6 +376,7 @@ class Config(Lockable):
 		'comment_file',
 		'contract_data',
 	)
+
 	# Auto-typechecked and auto-set opts - first value in list is the default
 	_ov = namedtuple('autoset_opt_info', ['type', 'choices'])
 	_autoset_opts = {
diff --git a/setup.py b/setup.py
index 18d3d13e..452d3d1f 100755
--- a/setup.py
+++ b/setup.py
@@ -10,7 +10,7 @@
 
 import sys, os
 from pathlib import Path
-from subprocess import run, PIPE
+from subprocess import run
 from setuptools import setup, Extension
 from setuptools.command.build_ext import build_ext
 
diff --git a/test/misc/opts_main.py b/test/misc/opts_main.py
index 091e8df1..390ea25c 100755
--- a/test/misc/opts_main.py
+++ b/test/misc/opts_main.py
@@ -84,5 +84,5 @@ for k in ('fee_estimate_mode',): # _autoset_opts
 	msg('{:30} {}'.format(f'cfg.{k}:', getattr(cfg, k)))
 
 msg('')
-for n, k in enumerate(cfg._args, 1):
-	msg(f'arg{n}: {k}')
+for n, arg in enumerate(cfg._args, 1):
+	msg(f'arg{n}: {arg}')
diff --git a/test/test-release.d/cfg.sh b/test/test-release.d/cfg.sh
index 8f631ec8..a41f8b13 100755
--- a/test/test-release.d/cfg.sh
+++ b/test/test-release.d/cfg.sh
@@ -74,6 +74,7 @@ init_tests() {
 	[ "$VERBOSE" ] || STDOUT_DEVNULL='> /dev/null'
 	d_lint="code errors with static code analyzer"
 	t_lint="
+		b ruff check setup.py $STDOUT_DEVNULL
 		b ruff check mmgen $STDOUT_DEVNULL
 		b ruff check test $STDOUT_DEVNULL
 		b ruff check examples $STDOUT_DEVNULL