fixup! fixup! fixup! Complete pip-tools setup (aio-libs#5486)

tools/deps.py

@@ -61,18 +61,23 @@ def install_dependencies(in_name):
 def replace_duplicates_with_symlinks():
     hash_to_file = collections.defaultdict(list)
 
-    for txt_file_name in PIN_FOLDER.glob("*.txt"):
-        if not txt_file_name.is_symlink():
-            with open(txt_file_name, "rb") as f:
-                digest = hashlib.sha1(f.read()).hexdigest()
-                hash_to_file[digest].append(txt_file_name)
-
-    for digest, files in hash_to_file.items():
-        if len(files) > 1:
-            base_file, *other_files = files
-            for other_file in other_files:
-                os.unlink(other_file)
-                os.symlink(base_file, other_file)
+    orig_dir = os.getcwd()
+    os.chdir(PIN_FOLDER)
+    try:
+        for txt_fname in pathlib.Path(".").glob("*.txt"):
+            if not txt_fname.is_symlink():
+                with open(txt_fname, "rb") as f:
+                    digest = hashlib.sha1(f.read()).hexdigest()
+                    hash_to_file[digest].append(txt_fname)
+
+        for digest, files in hash_to_file.items():
+            if len(files) > 1:
+                base_file, *other_files = files
+                for other_file in other_files:
+                    os.unlink(other_file)
+                    os.symlink(base_file, other_file)
+    finally:
+        os.chdir(orig_dir)
 
 
 if __name__ == "__main__":