Record the variables a run depends on in result.json

Author: rical

9pm.py

@@ -492,7 +492,8 @@ def write_json_result(data, agent_prompt=None):
                 '9pm_version': ninepm_sha[:10] if ninepm_sha else 'unknown',
                 'log_dir': LOGDIR,
                 'scratch_dir': SCRATCHDIR,
-                'root_path': ROOT_PATH
+                'root_path': ROOT_PATH,
+                'variables': run_variables()
             }
         },
         'summary': summary,
@@ -507,6 +508,11 @@ def write_json_result(data, agent_prompt=None):
 
     return json_path
 
+def run_variables():
+    """Environment variables needed to repeat the run"""
+    names = ('PYTHONHASHSEED',)
+    return {name: os.environ[name] for name in names if name in os.environ}
+
 def print_result_tree(data, base):
     i = 1
     llen = len(data['suite'])

README.md

@@ -129,6 +129,7 @@ o Execution
 
 Every test run generates a comprehensive `result.json` file containing:
 - Test metadata and timestamps
+- Variables needed to repeat the run, e.g. `PYTHONHASHSEED`
 - Complete hierarchical test structure
 - Embedded test output logs
 - Summary statistics