Hi there! Cool project. I'm trying both direct install, or building via source. This is on Debian 10:
$ pip3 install libretranslate
Collecting libretranslate
Downloading https://files.pythonhosted.org/packages/de/2d/1c13e912914ddb0e2823810163e5c4a790a3275e980f67822e333b3860b8/libretranslate-1.1.0-py3-none-any.whl
...
Collecting ctranslate2==1.17.1 (from argostranslate==1.1.2->libretranslate)
Could not find a version that satisfies the requirement ctranslate2==1.17.1 (from argostranslate==1.1.2->libretranslate) (from versions: )
No matching distribution found for ctranslate2==1.17.1 (from argostranslate==1.1.2->libretranslate)
$ git clone https://github.com/uav4geo/LibreTranslate
Cloning into 'LibreTranslate'...
...
$ cd LibreTranslate/
$ pip3 install -e .
Obtaining file:///home/x/Documents/devel/LibreTranslate
Collecting Flask-Limiter==1.4 (from libretranslate==1.1.0)
Using cached https://files.pythonhosted.org/packages/1c/66/1bc848a3d37bed2a4c6cea7b7e39b830b2cd848dc7dde759926bb896f8e8/Flask_Limiter-1.4-py3-none-any.whl
...
Collecting ctranslate2==1.17.1 (from argostranslate==1.1.2->libretranslate==1.1.0)
Could not find a version that satisfies the requirement ctranslate2==1.17.1 (from argostranslate==1.1.2->libretranslate==1.1.0) (from versions: )
No matching distribution found for ctranslate2==1.17.1 (from argostranslate==1.1.2->libretranslate==1.1.0)
$ python3 main.py
Traceback (most recent call last):
File "main.py", line 1, in <module>
from app import main
File "/home/x/Documents/devel/LibreTranslate/app/__init__.py", line 1, in <module>
from .main import main
File "/home/x/Documents/devel/LibreTranslate/app/main.py", line 2, in <module>
from app.app import create_app
File "/home/x/Documents/devel/LibreTranslate/app/app.py", line 1, in <module>
from flask import Flask, render_template, jsonify, request, abort, send_from_directory
ModuleNotFoundError: No module named 'flask'
Python3 is 3.7.3.