Installation of Unicon in Linux Alpine

[Eduardo Santizo]

Hello. Recently I've been trying to optimizing my containerized Python application by switching from Python's buster base image, to a Python Alpine image. All of my dependencies are installed during build time by using Poetry. I have a pyproject.toml file that lists all of my dependencies and installs them when I use poetry install. One of my dependencies is the Meraki Dashboard API package. That one doesn't give me any problems, but unfortunately it depends on unicon, hence why Im here. Whenever Poetry runs into unicon, it spits out the following error:

#0 37.24   RuntimeError
#0 37.24
#0 37.24   Unable to find installation candidates for unicon (23.4)
#0 37.24
#0 37.24   at /usr/local/lib/python3.8/site-packages/poetry/installation/chooser.py:109 in choose_for
#0 37.26       105│
#0 37.26       106│             links.append(link)
#0 37.26       107│
#0 37.26       108│         if not links:
#0 37.26     → 109│             raise RuntimeError(f"Unable to find installation candidates for {package}")
#0 37.26       110│
#0 37.26       111│         # Get the best link
#0 37.26       112│         chosen = max(links, key=lambda link: self._sort_key(package, link))
#0 37.26       113│

I've checked that the version is correct, that the docker container has the correct dependencies, even that my connection to the internet is stable. No matter what I do, I cannot get my alpine base image to properly install unicon. Is there any specific way that I need to know about? I found in a stackoverflow post, that alpine is kind of unreliable when it comes to Python packages that serve as wrappers for C or C++ code, but no other package is giving me this error. Im pretty sure it was my move to alpine, but I would appreciate the help if anyone could provide some advice into how I could get the project up and going with an alpine image.

Here's my dockerfile code for reference:

FROM python:3.8-alpine3.18

RUN apk update && apk add --no-cache --no-progress \
    bash \
    gcc \
    build-base \
    python3-dev \
    py3-pip \
    libffi-dev \ 
    pkgconfig \
    # TO CONVERT CRLF TO LF
    dos2unix \
    xvfb \
    wget \
    openssl \
    libssl1.1 \
    py-cryptography

# Set the default shell to bash
RUN sed -i -e "s/bin\/ash/bin\/bash/" /etc/passwd

# Move back to the default working directory for the app
WORKDIR /opt/app

# Copy the 'pyproject.toml' file, install the dependencies and then "activate"
# the environment by doing "poetry shell"
COPY pyproject.toml poetry.lock ./
RUN pip3 install poetry && poetry lock 
RUN poetry add unicon
RUN poetry install

# Copy all project files
COPY . .

EXPOSE 8080

# Run the starting script inside the poetry environment
CMD ["poetry", "run", "sh", "entrypoint.sh"]

[sumitsehgal123]

Hi Srujan,
Thanks for reaching out piestack support team, I will be looking at your ticket and reviewing it

[Siming Yuan]

iirc pypi does not allow whl file upload that is non gnu linux (manylinux1) or macos builds. so there is no whl file for unicon for alpine linux in pypi hence why the install fails

[Eduardo Santizo]

Any solution in that case?

[Taarini]

Hi @eddysanoli,

Can you please check again we have added the package for Linux Alpine

[sumitsehgal123]

Hi ,
Please can you share updates here .

[sumitsehgal123]

Hi ,
Can you please check again we have added the package for Linux Alpine.

[sumitsehgal123]

Hi ,
Please can you share updates here .

[sumitsehgal123]

Hi ,
Please share the updates on above ticket If you need any further assistance .Please let me know .