To fix the “cant open file pip errno 2 no such file or directory” error when installing Gekko, try the following steps:

1. Make sure you are in the correct directory where you want to install Gekko. You can use the cd command to navigate to the desired directory.
2. Check if you have pip installed on your system. If not, you can install it by running the following command:

python -m ensurepip --upgrade

3. If pip is already installed, try running the install command with the --user flag. This will install Gekko in your local user directory:

pip install gekko --user

4. If the above steps don’t work, you may need to check if there are any permissions issues with the current directory. You can try changing the permissions of the directory using the chmod command:

chmod 755 /path/to/directory

5. If you continue to have issues, you may want to try installing Gekko in a different directory or try reinstalling pip.

I hope this helps! Let me know if you have any further questions.