Only install last specified dependency

[tildebox]

My pyproject.toml file looks like this.

[tool.poetry.dependencies]
psycopg = {version = "3.2.3", extras = ["c"]}

[tool.poetry.group.dev.dependencies]
psycopg = {version = "3.2.3", extras = ["binary"]}

For production environment I use:
poetry install --only main

For development environment I use:
poetry install

However, poetry installs psycopg[c] and psycopg[binary] in the development environment. How can I get it to install only psycopg[binary] in the development environment?

[radoering]

Maybe, poetry install --only dev?

[tildebox]

With poetry install the implicit main group and the dev group should be installed. Since I only need psycopg[binary] in the development environment, only that should be installed.