activate context modules only in run.py

when the context is built from the database, really for execution
(#338)

capsul/engine/__init__.py

@@ -84,8 +84,10 @@ def execution_context(engine_label, engine_config, executable):
         )
         setattr(execution_context, module_name, valid_config)
 
-    # FIXME: should be done only in real execution (server) situation
-    execution_context.activate_modules_config()
+    # context activation should be done only in real execution (server)
+    # situation. This is done in database.execution_context(), not here
+    # because here we are on client-side API.
+    # execution_context.activate_modules_config()
 
     return execution_context
 

capsul/execution_context.py

@@ -25,7 +25,7 @@ class ExecutionContext(Controller):
     config_modules: list[str] = field(type=list[str], default_factory=list)
     dataset: OpenKeyDictController[Dataset]
 
-    def __init__(self, config=None, executable=None, activate_modules=True):
+    def __init__(self, config=None, executable=None, activate_modules=False):
         super().__init__()
         if config:
             python_modules = config.get("python_modules", [])

capsul/run.py

@@ -54,10 +54,12 @@ def run_job(
 
 
 def execute_job(database, engine_id, execution_id, job_uuid, debug=False):
+    # TODO: the context should be specific to the job, not only the execution
     execution_context = database.execution_context(engine_id, execution_id)
     execution_context.dataset.tmp = {
         "path": database.tmp(engine_id, execution_id),
     }
+    execution_context.activate_modules_config()
     job = database.job(engine_id, execution_id, job_uuid)
     if job is None:
         raise ValueError(f"No such job: {job_uuid}")