ERROR: Failed building wheel for cvxopt Failed to build cvxopt ERROR: Could not build wheels for cvxopt, which is required to install pyproject.toml-based projects

The error message suggests that there was a problem building the wheel for the `cvxopt` package, which is a dependency for CVXPY. This issue is likely due to missing or incompatible dependencies on your system.

To resolve this issue, you can try the following steps:

1. Make sure you have the required dependencies installed for building `cvxopt`. On Ubuntu or Debian-based systems, you can use the following command to install the necessary packages:

   sudo apt-get install python3-dev libblas-dev liblapack-dev gfortran

On other systems, refer to the documentation for your package manager to install the equivalent packages.

2. Upgrade your `pip` and `setuptools` packages to the latest versions:

   pip install --upgrade pip setuptools

3. Try installing `cvxopt` separately before installing `cvxpy`:

   pip install cvxopt

If this step fails with a similar error, you may need to manually build and install `cvxopt` using the following commands:

   pip install cython numpy
   pip install --no-binary :all: cvxopt

4. Finally, try installing `cvxpy` again:

   pip install cvxpy

By following these steps, you should be able to resolve the error related to building the `cvxopt` wheel and successfully install `cvxpy`.