[Python] How To Install ECOS?

I am trying to run code with cvxpy and ECOS solver CVXPY was installed like this:

pip install "cvxpy[CBC,CVXOPT,GLOP,GLPK,GUROBI,MOSEK,PDLP,SCIP,XPRESS,ECOS]"


My versions:

cvxopt 1.3.2
cvxpy 1.4.0
numpy 1.26.4


I found that ESOC was removed in cvxpy 1.6, but my version should support this solver https://github.com/cvxpy/cvxpy/issues/2301

I am running solver:

import pandas as pd
import numpy as np
import cvxpy as cp
import ecos
from typing import Union, Optional, Dict, List
from sklearn.covariance import LedoitWolf

...
prob = cp.Problem(cp.Minimize(risk + lambda_1 * cp.norm(w, 1)), constr) # min risk
prob.solve(solver="ECOS", parallel=parallel, verbose=verbose)


I have an error

SolverError: The solver ECOS is not installed.
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