diff --git a/setupsrc/pypdfium2_setup/autorelease.py b/setupsrc/pypdfium2_setup/autorelease.py
index 21425f957..b603e103d 100644
--- a/setupsrc/pypdfium2_setup/autorelease.py
+++ b/setupsrc/pypdfium2_setup/autorelease.py
@@ -12,6 +12,7 @@
 
 sys.path.insert(0, str(Path(__file__).parents[1]))
 from pypdfium2_setup import update_pdfium
+# TODO? consider glob import or dotted access
 from pypdfium2_setup.packaging_base import (
     run_cmd,
     set_versions,
@@ -37,7 +38,7 @@
 RefBindingsFile = SourceTree / "bindings" / BindingsFileName
 
 # these files/dirs do not necessarily need to have been changed, `git add` silently skips that
-PlacesToRegister = [AutoreleaseDir, VersionFile, Changelog, ChangelogStaging, RefBindingsFile]
+PlacesToRegister = (AutoreleaseDir, VersionFile, Changelog, ChangelogStaging, RefBindingsFile)
 
 
 def run_local(*args, **kws):
diff --git a/setupsrc/pypdfium2_setup/build_pdfium.py b/setupsrc/pypdfium2_setup/build_pdfium.py
index 368e99d51..19de957b5 100755
--- a/setupsrc/pypdfium2_setup/build_pdfium.py
+++ b/setupsrc/pypdfium2_setup/build_pdfium.py
@@ -12,6 +12,7 @@
 from pathlib import Path, WindowsPath
 
 sys.path.insert(0, str(Path(__file__).parents[1]))
+# TODO? consider glob import or dotted access
 from pypdfium2_setup.packaging_base import (
     Host,
     SB_Dir,
@@ -139,11 +140,7 @@ def get_pdfium_version():
     tag = ref.split("/")[-1]
     
     print(f"Current head {head_commit}, latest tagged commit {tag_commit} ({tag})", file=sys.stderr)
-    
-    if head_commit == tag_commit:
-        v_libpdfium = tag
-    else:
-        v_libpdfium = head_commit
+    v_libpdfium = tag if head_commit == tag_commit else head_commit
     
     return v_libpdfium
 
diff --git a/setupsrc/pypdfium2_setup/craft_packages.py b/setupsrc/pypdfium2_setup/craft_packages.py
index dfc0479ad..9b18b88c6 100644
--- a/setupsrc/pypdfium2_setup/craft_packages.py
+++ b/setupsrc/pypdfium2_setup/craft_packages.py
@@ -9,6 +9,7 @@
 from pathlib import Path
 
 sys.path.insert(0, str(Path(__file__).parents[1]))
+# TODO? consider glob import or dotted access
 from pypdfium2_setup.packaging_base import (
     run_cmd,
     clean_platfiles,
diff --git a/setupsrc/pypdfium2_setup/packaging_base.py b/setupsrc/pypdfium2_setup/packaging_base.py
index 08c371a2a..091a87a2d 100644
--- a/setupsrc/pypdfium2_setup/packaging_base.py
+++ b/setupsrc/pypdfium2_setup/packaging_base.py
@@ -96,7 +96,7 @@ class PlatformNames:
 
 def plat_to_system(pl_name):
     if pl_name == PlatformNames.sourcebuild:
-        # FIXME If doing a sourcebuild on an unknown host system, this returns None, which will cause binary detection code to fail (we need to know the platform-specific binary name) - handle this upstream with fallback value?
+        # FIXME If doing a sourcebuild on an unknown host system, this returns None, which will cause binary detection code to fail (we need to know the platform-specific binary name) - handle this downsteam with fallback value?
         return Host.system
     result = [s for s in BinarySystems if pl_name.startswith(s)]
     assert len(result) == 1
@@ -171,6 +171,7 @@ def get_wheel_tag(pl_name):
         return "macosx_11_0_arm64"
     # As of May 2023, pdfium may potentially require glibc >= 2.26, but the actual requirement is still lower in practice
     # (see https://crrev.com/1084974 and https://groups.google.com/a/chromium.org/g/chromium-dev/c/SdCs9k3celo/m/bnnBzU1FCgAJ)
+    # TODO? consider calling objdump to dynamically determine glibc requirement
     elif pl_name == PlatformNames.linux_x64:
         return "manylinux_2_26_x86_64"
     elif pl_name == PlatformNames.linux_x86:
diff --git a/setupsrc/pypdfium2_setup/setup_base.py b/setupsrc/pypdfium2_setup/setup_base.py
index fb1bc9577..b5494d83d 100644
--- a/setupsrc/pypdfium2_setup/setup_base.py
+++ b/setupsrc/pypdfium2_setup/setup_base.py
@@ -7,6 +7,7 @@
 from wheel.bdist_wheel import bdist_wheel
 
 sys.path.insert(0, str(Path(__file__).parents[1]))
+# TODO? consider glob import or dotted access
 from pypdfium2_setup.packaging_base import (
     VerNamespace,
     LibnameForSystem,
diff --git a/setupsrc/pypdfium2_setup/update_pdfium.py b/setupsrc/pypdfium2_setup/update_pdfium.py
index a0639ef20..af8c08b98 100755
--- a/setupsrc/pypdfium2_setup/update_pdfium.py
+++ b/setupsrc/pypdfium2_setup/update_pdfium.py
@@ -14,6 +14,7 @@
 from concurrent.futures import ThreadPoolExecutor
 
 sys.path.insert(0, str(Path(__file__).parents[1]))
+# TODO? consider glob import or dotted access
 from pypdfium2_setup.packaging_base import (
     Host,
     DataTree,
@@ -80,7 +81,6 @@ def download_releases(version, platforms, robust, max_workers, use_v8):
     return archives
 
 
-
 def safe_extract(tar, dest_dir, **kwargs):
     
     # Workaround against CVE-2007-4559 (path traversal attack) (thanks @Kasimir123 / @TrellixVulnTeam)
@@ -124,7 +124,7 @@ def generate_bindings(archives, version):
         
         items = list(bin_dir.iterdir())
         assert len(items) == 1
-        shutil.move(bin_dir / items[0], pl_dir / target_name)
+        shutil.move(bin_dir/items[0], pl_dir/target_name)
         
         ver_file = DataTree / pl_name / VerStatusFileName
         ver_file.write_text(str(version))