I have encountered an issue with installing dependencies in a Python virtual environment. Specifically, I am trying to install dependencies from two requirements files and a pyproject.toml file. Here are the contents of each file:

requirements.txt:

pyyaml

requests

second_requirements.txt:

langchain>=0.0.295

pydantic>=1.10.13,<3

typing-extensions>=4.2.0

pyproject.toml:

[tool.poetry.dependencies] python = “^3.8”

[tool.poetry.dependencies]

dependencies = [ “PyYAML>=6”, “asteval>=0.9.25”, “cerberus>=1.3.4”, “cloudpickle>=1.6.0”, “fsspec>=0.8.7”, “gitpython>=3.1.2”, “jinja2>=2.11.2”, “matplotlib>=3.1.3, <=3.8.4”, “numpy>=1.19.2”, “oci>=2.125.3”, “ocifs>=1.1.3”, “pandas>1.2.1; python_version<‘3.9′”, “pandas>=2.2.0; python_version>=’3.9′”, “psutil>=5.7.2”, “python_jsonschema_objects>=0.3.13”, “requests”, “scikit-learn>=1.0”, “tabulate>=0.8.9”, “tqdm>=4.59.0”, ]

I created a virtual environment and installed the dependencies :

However, when I check the installed packages in the virtual environment, the langchain library is not installed.

Can someone help me understand why langchain is not being installed and how to resolve this issue?

Thank you!