Default global variables aren't added when LANGFLOW_VARIABLES_TO_GET_FROM_ENVIRONMENT is set

[eric-schneider]

Bug Description

If you define a default global variable (constants.py) as well as LANGFLOW_VARIABLES_TO_GET_FROM_ENVIRONMENT in the same .env file, the default global variable is ignored.

Reproduction

1. Create a .env file with the following contents:

LANGFLOW_VARIABLES_TO_GET_FROM_ENVIRONMENT=VARIABLE1
OPENAI_API_KEY=test

2. Start Langflow:

VARIABLE1="VALUE1" python -m langflow run --env-file .env

3. Go to Settings > Environment Variables, and notice only VARIABLE1 is added.

4. Comment out LANGFLOW_VARIABLES_TO_GET_FROM_ENVIRONMENT in the .env file:

# LANGFLOW_VARIABLES_TO_GET_FROM_ENVIRONMENT=VARIABLE1
OPENAI_API_KEY=test

5. Restart Langflow.

6. Go to Settings > Environment Variables, and notice that OPENAI_API_KEY is added.

Expected behavior

I expected Langflow to honor both the default global variables as well as the custom global variables that I've defined in LANGFLOW_VARIABLES_TO_GET_FROM_ENVIRONMENT.

Who can help?

@Italo

Operating System

macOS 14.7, Docker

Langflow Version

1.0.19

Python Version

3.11

Screenshot

No response

Flow File

No response