refactor: read pack counts in one branch

Also gives the platform typo test a scratch directory it removes.

scripts/pipeline.py

@@ -106,16 +106,10 @@ def parse_pack_counts(output: str) -> dict[str, tuple[int, int]]:
             continue
         if "files packed" not in line:
             continue
-        # New format: "622 files packed (359 baseline + 263 from cores), 358/359 files OK"
-        base_m = re.search(r"\((\d+) baseline", line)
+        # "622 files packed (359 baseline + 263 from cores), 358/359 files OK"
         ok_m = re.search(r"(\d+)/(\d+) files OK", line)
-        if base_m and ok_m:
-            ok, total = int(ok_m.group(1)), int(ok_m.group(2))
-            counts[current_label] = (ok, total)
-        elif ok_m:
-            # Fallback: old format without baseline
-            ok, total = int(ok_m.group(1)), int(ok_m.group(2))
-            counts[current_label] = (ok, total)
+        if ok_m:
+            counts[current_label] = (int(ok_m.group(1)), int(ok_m.group(2)))
     return counts
 
 

tests/test_system_selection.py

@@ -95,8 +95,9 @@ class AMistypedPlatformIsNamed(unittest.TestCase):
     ran its whole build first and then said "no pack for batocra"."""
 
     def test_every_cli_names_the_platform_it_meant(self):
-        out = Path(tempfile.mkdtemp(dir=REPO_ROOT / "tmp"))
-        out.rmdir()
+        scratch = tempfile.TemporaryDirectory(dir=REPO_ROOT / "tmp")
+        self.addCleanup(scratch.cleanup)
+        out = Path(scratch.name) / "packs"
         for script, extra in (("verify.py", []), ("cross_reference.py", []),
                               ("generate_pack.py", ["--offline", "--output-dir", str(out)])):
             with self.subTest(script=script):