[kstars] [Bug 488499] New: The latest KStars versions (369, 370, 371) can't be installed on macOS Big Sur

[Jean-Claude]

https://bugs.kde.org/show_bug.cgi?id=488499

            Bug ID: 488499
           Summary: The latest KStars versions (369, 370, 371) can't be
                    installed on macOS Big Sur
    Classification: Applications
           Product: kstars
           Version: 3.7.1
          Platform: macOS (DMG)
                OS: macOS
            Status: REPORTED
          Severity: critical
          Priority: NOR
         Component: general
          Assignee: mutlaqja at ikarustech.com
          Reporter: jcjesior at free.fr
  Target Milestone: ---

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SUMMARY
The following versions 3.6.9, 3.7.0, 3.71 can't be installed on macOS Big Sur.

STEPS TO REPRODUCE
1. Download the latest version of KStars on a Intel Mac under macOS Big Sur
2. 
3. 

OBSERVED RESULT
Try to mount the dmg : no avail

EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: macOS Big Sur 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
I installed macOS Big Sur on a brand new SSD and I downloaded the versions of
KStars 3.6.9, 3.7.0, 3.7.1
There is no way to install KStars ≥ 3.6.8. (3.6.8 works perfectly)

When I double-click on the kstars-3.7.1.dmg I get a system warning :
The following disk images couldn't be opened
kstars-3.7.1.dmg          no mountable file systems

As a résumé :
- KStars ≤ 368 works perfectly on my Macs
- the dmg of KStars 369 and the dmg of KStars 370 mount as they should placing
KStars app in the Applications folder.
BUT KStars app is not functional : an alert appears saying "Check with the
developer to make sure kstars works with this version of macOS"
- the dmg of KStars 371 has the problem described above

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