Tranquil IT Forum

Published: **Dec 8, 2016 - 11:31**

Good morning,

First of all, a huge thank you to the development team for this fantastic solution that makes my life so much easier

After setting up the deployment of the classic packages.
I'm tackling the creation of my first packages… Sorry, I'm also a Python newbie

I am looking to install Qgis 2.14.9.
Installing Qgis 2.14.9 is no problem EXCEPT that I have to uninstall the previous version first: a 2.14.3 (which wasn't installed with wapt, otherwise I might have been able to use the "conflicts" function if I understand correctly?)

So I set up this:

Code: Select all

from setuphelpers import *

uninstallkey = ['QGIS 2.14']

def install():
    print('installation de Qgis 2.14.9')
    if isrunning('qgis-bin.exe'):
        print("Qgis est ouvert !!! GRRRR...")
        quit()

    print('desinstallation de Qgis 2.14.3')
    sofname = 'Qgis Essen'
    versionsoft = '2.14.3'
    uninstallkey = ['QGIS Essen']
    check_installed_soft = installed_softwares(sofname)
    if check_installed_soft:
        for uninstall in check_installed_soft:
            if Version(uninstall['version']) < Version(versionsoft):
                cmd = WAPT.uninstall_cmd(uninstall['key'])
                run(cmd)

    run(r'"QGIS-OSGeo4W-2.14.9-2-Setup-x86_64.exe" /S')
    remove_desktop_shortcut(r'GRASS GIS 7.0.4')
    remove_desktop_shortcut(r'GRASS GIS 7.0.5')
    remove_desktop_shortcut(r'OSGeo4W Shell')
    remove_tree(r'C:\Users\Public\Desktop\QGIS Essen')
    remove_tree(r'C:\Users\Public\Desktop\QGIS 2.14')

except that when I run it I get double backslashes in the path of the uninstallation executable added even though the value in the registry is correct.

Code: Select all

FATAL ERROR : CalledProcessError: Command '([u'C:\\Program Files\\QGIS Essen\\Un
install-QGIS.exe', '/S'],)' returned non-zero exit status 1

I searched through the forum posts but I didn't find anything

What is the way to get around this problem?

Thank you for your help
Denis

Published: **Dec 8, 2016 - 11:44 AM**

Double backslashes are "normal"
This is the display of the content of a string of characters with the backslashes "escaped" (so that they are not interpreted as control characters)

The problem lies elsewhere, most likely a 32/64 bit issue.
Wapt is a 32-bit process. Therefore, C:\Program Files\ is automatically changed to C:\Program Files (x86)\ by Windows

I therefore suggest that you disable the automatic 32/64 Windows redirection using the context function "with disable_file_system_redirection():"

Code: Select all

..
    if check_installed_soft:
        for uninstall in check_installed_soft:
            if Version(uninstall['version']) < Version(versionsoft):
                with disable_file_system_redirection():
                    cmd = WAPT.uninstall_cmd(uninstall['key'])
                    run(cmd)

...

Published: **Dec 8, 2016 - 1:58 PM**

Thanks for the quick reply.
Noted about the double backslashes.

Indeed, QGIS 2.14.3 is 64-bit.

I tested it by disabling automatic redirection as indicated (thanks for the code).

But... the error is still there...

Perhaps I can work around the problem with a .bat file (but it's not very clean)?
In that case, should I put the .bat file in the same directory as the setup.py file? Or on a network share?

Thanks,
Denis

Published: **Dec 8, 2016 - 2:47 PM**

You can draw inspiration from:

Code: Select all

from setuphelpers import *
import glob,time
import regutil

uninstallkey = []

version = '2.16.2-3'
url = "http://qgis.org/downloads/QGIS-OSGeo4W-%s-Setup-x86.exe" % version
url64 = "http://qgis.org/downloads/QGIS-OSGeo4W-%s-Setup-x86_64.exe" % version
exe = "QGIS-OSGeo4W-%s-Setup-x86.exe" % version
exe64 = "QGIS-OSGeo4W-%s-Setup-x86_64.exe" % version

def install():
    with disable_file_system_redirection():
        #Remove Old Versions in Default Directory
        for uninstall in glob.glob(makepath(programfiles,'QGIS*','Uninstall-QGIS.exe')):
            run_notfatal('"%s" /S'%uninstall)
            time.sleep(30)

        if isdir(makepath(programfiles,'QGIS 2.16.2')):
            remove_tree(makepath(programfiles,'QGIS 2.16.2'))

        #Fix bug with QGIS thinking it is still installed
        registry_delete(HKEY_LOCAL_MACHINE,makepath('Software','QGIS 2.16.2'),None)

    if iswin64():
        install_exe_if_needed(exe64,'/S',key='QGIS 2.16',min_version='')
    else:
        install_exe_if_needed(exe,'/S',key='QGIS Wien',min_version='')

Published: **Dec 13, 2016 - 10:40 PM**

Thank you for your help

That saved me...
I still need to improve my Python skills... but so I did it like this

Code: Select all

# -*- coding: utf-8 -*-
from setuphelpers import *
import glob,time
import regutil

uninstallkey = ['QGIS 2.14']

def install():
    print('installation de Qgis 2.14.9')
    if isrunning('qgis-bin.exe'):
        print("Qgis est ouvert !!! GRRRR...")
        quit()

    print('desinstallation de Qgis 2.14.3')
    with disable_file_system_redirection():
        #Remove Old Versions in Default Directory
        for uninstall in glob.glob(makepath(programfiles,'QGIS*','Uninstall-QGIS.exe')):
            run_notfatal('"%s" /S'%uninstall)
            time.sleep(30)

        #Fix bug with QGIS thinking it is still installed
        registry_deletekey(HKEY_LOCAL_MACHINE,'software\microsoft\windows\currentversion\uninstall','QGIS Essen')
        registry_deletekey(HKEY_LOCAL_MACHINE,'software','QGIS Essen')


    run(r'"QGIS-OSGeo4W-2.14.9-2-Setup-x86_64.exe" /S')
    remove_desktop_shortcut(r'GRASS GIS 7.0.4')
    remove_desktop_shortcut(r'GRASS GIS 7.0.5')
    remove_desktop_shortcut(r'OSGeo4W Shell')
    remove_tree(r'C:\Users\Public\Desktop\QGIS Essen')
    remove_tree(r'C:\Users\Public\Desktop\QGIS 2.14')
    if isdir(makepath(programfiles,'QGIS Essen')):
            remove_tree(makepath(programfiles,'QGIS Essen'))

And it works.

Are you planning to create a special section for sharing setup.py files?

THANKS

Published: **Dec 14, 2016 - 10:31 PM**

Attention here:

Code: Select all

def install():
    print('installation de Qgis 2.14.9')
    if isrunning('qgis-bin.exe'):
        print("Qgis est ouvert !!! GRRRR...")
        quit()

You exit here if qgis-bin.exe is open

There will therefore be no second attempt

You would need to replace it with

Code: Select all

def install():
    print('installation de Qgis 2.14.9')
    if isrunning('qgis-bin.exe'):
        error("Qgis est ouvert !!! GRRRR...")

Published: **Dec 15, 2016 - 08:13**

Also, specify that backslashes should not be interpreted by putting an 'r' (raw string) before the registry key path.

'r'software\microsoft\windows\currentversion\uninstall'

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