Installer for missing PIP packages

[Benjamin Jakimow]

Many users have problems to install python packages that are missing in a standard QGIS installation. Implement an installer that helps to install such none-standard-packages (NSPs) via pip.

• read required packages from requirements.txt
• by default, install missing packages with pip install ... -ud into the pip user directory (somewhere in HOME). This way we should be able to avoid missing access rights on all platforms
• optionally, allow to use pip installation without `-u` (of interest for Admins)
• run requirements.txt commands line by line and continue in case of failed installations
• show installation progress

This issue addresses #369, #328, #284, #259

[Benjamin Jakimow]

Current GUI: any recommendations @Fabian Thiel @Andreas Janz ?

Before:

After pressing “Yes to all”

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[Andreas Janz]

Sieht gut aus. Kann man es schon live testen?

[Benjamin Jakimow]

The Package installer can be started from

1. the message bar,
2. the main window (Project > Package Installer) and
3. the EnMAP-Box interface EnMAPBox.instance().showPackageInstaller()

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[Andreas Janz]

top!

[Benjamin Jakimow]

added Installer for missing PIP packages - addresses #371 - added pippackageinstaller.ui dependencycheck.py: - refactoring of everything - added PIPPackage() to described a package and how it can be installed with pip - PIPPackageInstallerModel(QAbstractTableModel) to visualize PIPPackages - PIPPackageInstaller(QWidget) to install missing pip packages enmapboxgui.py: - connected PIPPackageInstaller, which can be started from message bar and context menu - added EnMAPBox().showPackageInstaller()

Signed-off-by: Benjamin Jakimow [e-mail] [e-mail]

→ <<cset 0784193f79f0>>

[Benjamin Jakimow]

I added the following warning which is shown before the first try to install a package:

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[Benjamin Jakimow]

addresses #371 - added warning message to prefere local package manager

Signed-off-by: Benjamin Jakimow [e-mail] [e-mail]

→ <<cset 5314f5e81cd8>>

[Benjamin Jakimow]

dependencycheck.py, PIP Installer - allows to reload python packages - shows current and available / latest version - added hint that restart of QGIS / EnMAP-Box might be required, closes #394 - closes #371 - closes #395

→ <<cset c71356e02a10>>