Installation of snap with python module "fmpy" on armhf platform

snapcraft
1

Hello,

I am trying to create a snap for armhf platform containing the python module “FMPy”. For armhf platforms, the only way to install FMPY is reported here:

Therefore I am trying to find the way to include FMPy using the “–no-deps” option.

I think I have to “override” the build process, so I defined the yaml file as it follows:

name: snap-fmpy
version: '0.1'

summary: python test
description: |
 test FMPy as snap

architectures:
  - build-on: armhf
    run-on: [armhf]

base: core18

grade: devel
confinement: devmode

apps:
  snap-fmpy:
    command: usr/bin/python3 $SNAP/bin/snap_fmpy
    plugs: [home,network-bind]
parts:
  snap-fmpy:
    plugin: python
    python-version: python3
    source: .
    build-packages:
        [python3-numpy, python3-lxml, python-pathlib, python3-pip]
    override-build: |
        sudo -H pip3 install --no-deps fmpy        
    
    python-packages: [fmpy]

This enables the snap build and the installation of the snap , but there is no binary generation:

grafik

Do you know how to build it properly?

Thank you