Installing the standalone version without qiime2

Hello Cameron, I am trying to use CTF on some analysis and I am trying to install it on a fresh python3 environment without qiime2. I used the `pip install gemelli` command, however, the installation was halted due to some errors, which appeared to be attributed missing packages, `numpy` and `cython`. After manually installing these two packages (use the qiime2 channel), the installation went through. Perhaps, you could check why numpy and cython were not automatically downloaded and installed? Thanks! -Jincheng

Start by reproducing `pip install gemelli` in a fresh Python 3 environment without qiime2, then inspect the package dependency metadata that controls installation. The issue is done when numpy and cython are installed automatically and the standalone installation completes without manually using the qiime2 channel.

Written by the indexing model from the issue text.