Merge pull request #2 from hypothesis/fixups

A couple of small fixes that I noticed

Author: seanh

src/pip_sync_faster/main.py

@@ -3,45 +3,30 @@
 import os
 import sys
 from argparse import ArgumentParser
-from functools import lru_cache
+from functools import cached_property
 from importlib.metadata import version
 from pathlib import Path
 from subprocess import CalledProcessError, run
 
 
 class SrcFile:
     def __init__(self, path):
-        self._path = path
+        self.path = path
 
-    @property
-    @lru_cache
-    def path(self):
-        return self._path
-
-    @property
-    @lru_cache
+    @cached_property
     def abspath(self):
-        return os.path.abspath(self._path)
-
-    @property
-    @lru_cache
-    def abspath_hash(self):
-        hash_ = hashlib.sha512()
-        hash_.update(self.abspath.encode("utf8"))
-        return hash_.hexdigest()
+        return os.path.abspath(self.path)
 
-    @property
-    @lru_cache
+    @cached_property
     def contents_hash(self):
+        hash_ = hashlib.sha512()
         with open(self.abspath, "rb") as file:
-            hash_ = hashlib.sha512()
             hash_.update(file.read())
-            return hash_.hexdigest()
+        return hash_.hexdigest()
 
 
 def pip_sync_maybe(src_files, args):
-    virtualenv = Path(os.environ["VIRTUAL_ENV"])
-    cached_hashes_path = virtualenv / "pip_sync_faster.json"
+    cached_hashes_path = Path(os.environ["VIRTUAL_ENV"]) / "pip_sync_faster.json"
 
     try:
         with open(cached_hashes_path, "r", encoding="utf8") as cached_hashes_file:
@@ -52,7 +37,7 @@ def pip_sync_maybe(src_files, args):
     src_files = [SrcFile(src_file) for src_file in src_files]
 
     for src_file in src_files:
-        if src_file.contents_hash != cached_hashes.get(src_file.abspath_hash):
+        if src_file.contents_hash != cached_hashes.get(src_file.abspath):
             break
     else:
         # All of the source files already had matching hashes in the cache.
@@ -65,17 +50,16 @@ def pip_sync_maybe(src_files, args):
     except CalledProcessError as err:
         sys.exit(err.returncode)
     else:
+        # pip-sync succeeded so update the cache.
         for src_file in src_files:
-            cached_hashes[src_file.abspath_hash] = src_file.contents_hash
+            cached_hashes[src_file.abspath] = src_file.contents_hash
 
-        # pip-sync succeeded so update the cache.
         with open(cached_hashes_path, "w", encoding="utf8") as cached_hashes_file:
             json.dump(cached_hashes, cached_hashes_file)
 
 
-def entry_point():  # pragma: nocover
+def entry_point():
     parser = ArgumentParser()
-    parser.add_argument("-n", "--dry-run", action="store_true")
     parser.add_argument("--version", action="store_true")
     parser.add_argument("src_files", nargs="*")