[tmp debug timing]

piptools/scripts/compile.py

@@ -303,6 +303,11 @@ def cli(
     setup_file_found = False
     for src_file in src_files:
         is_setup_file = os.path.basename(src_file) in METADATA_FILENAMES
+
+        import time
+
+        start_t = time.perf_counter()
+
         if src_file == "-":
             # pip requires filenames and not files. Since we want to support
             # piping from stdin, we need to briefly save the input from stdin
@@ -390,6 +395,9 @@ def cli(
                 )
             )
 
+        end_t = time.perf_counter()
+        print(f"req {src_file} took {end_t - start_t} seconds")
+
     # Parse all constraints from `--constraint` files
     for filename in constraint:
         constraints.extend(