About your yaml file issue.

Hi, i have seen your yaml file, looks like you have defined python package as stage packages. it should be inside python packages here is the yaml file reference just for your hint.

name: jpg2pdf
base: core18 # the base snap is the execution environment for this snap
version: '0.1' # just for humans, typically '1.2+git' or '1.3.2'
summary: Convert jpg jpeg png bmp svg tiff images to pdf format with encryption
description: |
  jpg2pdf is a powerful pdf converter for converting any images like jpg jpeg png bmp svg tiff to standard pdf format with encryption and other addition features
grade: stable # must be 'stable' to release into candidate/stable channels  / before dev use devel
confinement: strict # use 'strict' once you have the right plugs and slots / before dev use devmode

icon: snap/gui/icon.png

architectures:
  - build-on: [amd64]

apps:
  jpg2pdf:
    command: bin/desktop-launch python3 $SNAP/jpg2pdf.py
    plugs:
       - home
       - gsettings
       - network
       - network-bind
       - network-status
       - desktop
       - desktop-legacy
       - x11
       - unity7
       - wayland
       - opengl
    desktop: jpg2pdf.desktop

plugs:
  gsettings:
  gtk-3-themes:
    interface: content
    target: $SNAP/data-dir/themes
    default-provider: gtk-common-themes
  icon-themes:
    interface: content
    target: $SNAP/data-dir/icons
    default-provider: gtk-common-themes
  sound-themes:
    interface: content
    target: $SNAP/data-dir/sounds
    default-provider: gtk-common-themes
  pyqt5-runtime:
    interface: content
    target: $SNAP/pyqt5-runtime
    default-provider: pyqt5-runtime

parts:
  desktop-gui:
    plugin: dump
    source: src/
    override-build: |
      snapcraftctl build
      sed -i 's|Icon=.*|Icon=${SNAP}/meta/gui/icon.png|g' ${SNAPCRAFT_PART_SRC}/jpg2pdf.desktop
      mkdir -p ${SNAPCRAFT_PART_INSTALL}/usr/share/applications/
      cp -rf ${SNAPCRAFT_PART_SRC}/jpg2pdf.desktop ${SNAPCRAFT_PART_INSTALL}/usr/share/applications/jpg2pdf.desktop

  snap-launcher:
    plugin: dump
    source: snap_launcher/

  jpg2pdf:
      plugin: python
      python-version: python3
      source: .
      python-packages:
          - requests
          - cryptography
          - fpdf2
          - Pillow
          - pikepdf
      build-attributes: [ keep-execstack ]

alexanderlanganke / ocrmypdfgui

About your yaml file issue. #18