fix: settings now can be set from cli

src/backend/langflow/__main__.py

@@ -2,6 +2,7 @@ import logging
 import multiprocessing
 import platform
 from pathlib import Path
+from langflow.settings import settings
 
 import typer
 from fastapi.staticfiles import StaticFiles
@@ -17,9 +18,20 @@ def get_number_of_workers(workers=None):
     return workers
 
 
+def update_settings(config: str):
+    """Update the settings from a config file."""
+    if config:
+        settings.update_from_yaml(config)
+
+
 def serve(
-    host: str = "127.0.0.1", workers: int = 1, timeout: int = 60, port: int = 7860
+    host: str = "127.0.0.1",
+    workers: int = 1,
+    timeout: int = 60,
+    port: int = 7860,
+    config: str = "config.yaml",
 ):
+    update_settings(config)
     app = create_app()
     # get the directory of the current file
     path = Path(__file__).parent

src/backend/langflow/settings.py

@@ -2,28 +2,39 @@ import os
 from typing import List
 
 import yaml
-from pydantic import BaseSettings, Field, root_validator
+from pydantic import BaseSettings, root_validator
 
 
 class Settings(BaseSettings):
-    chains: List[str] = Field(default=[])
+    chains: List[str] = []
-    agents: List[str] = Field(default=[])
+    agents: List[str] = []
-    prompts: List[str] = Field(default=[])
+    prompts: List[str] = []
-    llms: List[str] = Field(default=[])
+    llms: List[str] = []
-    tools: List[str] = Field(default=[])
+    tools: List[str] = []
-    memories: List[str] = Field(default=[])
+    memories: List[str] = []
-    dev: bool = Field(default=False)
+    dev: bool = False
 
     class Config:
         validate_assignment = True
+        extra = "ignore"
 
-    @root_validator
+    @root_validator(allow_reuse=True)
     def validate_lists(cls, values):
         for key, value in values.items():
             if key != "dev" and not value:
                 values[key] = []
         return values
 
+    def update_from_yaml(self, file_path: str):
+        new_settings = load_settings_from_yaml(file_path)
+        self.chains = new_settings.chains or []
+        self.agents = new_settings.agents or []
+        self.prompts = new_settings.prompts or []
+        self.llms = new_settings.llms or []
+        self.tools = new_settings.tools or []
+        self.memories = new_settings.memories or []
+        self.dev = new_settings.dev or False
+
 
 def save_settings_to_yaml(settings: Settings, file_path: str):
     with open(file_path, "w") as f:
@@ -41,9 +52,8 @@ def load_settings_from_yaml(file_path: str) -> Settings:
 
     with open(file_path, "r") as f:
         settings_dict = yaml.safe_load(f)
-        a = Settings.parse_obj(settings_dict)
 
-    return a
+    return Settings(**settings_dict)
 
 
 settings = load_settings_from_yaml("config.yaml")