Here's how to install and run DBXFS to mount Dropbox. I'm using a rooted Samsung Galaxy A035M with Termux installed via FDroid. This is only how to install DBXFS – NOT having it mount your dropbox. DBXFS will fail to automatically to mount Dropbox with the following error: "Don't know how to automatically mount the file system on this platform. Run with –smb-no-mount".

The –smb-no-mount flag will create a cifs share running on 127.0.0.1:PORT. I'm still figuring out how to get this to mount in Termux properly. This guide will get you to that point

I had problems getting DBXFS to install/compile on Termux so I used Docker on my Windows 10 machine to emulate ARM64 and install DBXFS in a python virtual environment. The venv was then copied to Termux

This assumes you know a little about docker and read the DBXFS usage guide

Make sure you have docker installed already.

Create a file named Dockerfile with the following content

FROM arm64v8/python:3.8-buster
CMD ["/bin/bash"]

Using the command prompt opened in the same folder as the Dockerfile, run this command to run the docker image.

docker run -v .:/apps -it -w /apps arm64-python

Now your shell should have changed to bash. We're now running on ARM64! Run the following commands to create a virtual environment with DBXFS installed

python3 -m venv venv
source venv/bin/activate
pip3 install cryptography argon2-cffi stone requests more-itertools zipp
pip3 install dbxfs

Test that its working

dbxfs --help

If that looks good, tar up the virtual env and then copy the file to your Android device.

tar -cvf venv.tar venv
exit

Copy the venv.tar file to your Androids download folder then copy them to termux. I ran termux-setup-storage which lets me access my android files from the Termux session

cp ~/storage/downloads/venv.tar ~
tar -xvf venv.tar

Now install the following dependencies before sourcing the environment

pkg install python-cryptography mount-utils samba
source venv/bin/activate

This is where I'm leaving off. Running dbxfs --smb-no-mount will create a CIFS share on localhost. It's up to you to learn how to mount it :0