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I am running Manjaro Gnome on Surface Pro 3 and lately, I'm no longer able to launch the Gnome Tweaks application. I have looked at other posts with the same problem and for other people, it was due to a missing Python GI dependency, in my case, this is the problem I'm getting:

gnome-tweaks
Traceback (most recent call last):
  File "/usr/bin/gnome-tweaks", line 14, in <module>
    gi.require_version("Gtk", "3.0")
  File "/home/onur/anaconda3/lib/python3.7/site-packages/gi/__init__.py", line 130, in require_version
    raise ValueError('Namespace %s not available' % namespace)
ValueError: Namespace Gtk not available

I know that the Namespace Gtk isn't available in the said .py file and I thought about manually including it but I wasn't sure how and I didn't want to accidentally break the software.

Andros Adrianopolos
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1 Answers1

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DO: 

sudo nano /usr/bin/gnome-tweaks

change: 

#!/usr/bin/env/python3

to: #!/usr/bin/python3

Jeff Schaller
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Guilherme Leal
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