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I have been trying to install the Pencil Project on Ubuntu-18.04 to design user interfaces before implementing it. I have been having the following installation problem and I am not sure why. After downloading it I only 

sudo apt install ./pencil_3.1.0.ga_amd64.deb && sudo apt install -f

Below the warning:

$ sudo dpkg -i pencil_3.1.0.ga_amd64.deb && sudo apt install -f 
(Reading database ... 257381 files and directories currently installed.) 
Preparing to unpack pencil_3.1.0.ga_amd64.deb ... 
Unpacking pencil (3.1.0.ga) over (3.1.0.ga) ... 
rm: cannot remove '/usr/share/applications/pencil.desktop': No such file or directory 
rm: cannot remove '/usr/share/applications/pencil.png': No such file or directory 
Setting up pencil (3.1.0.ga) ... 
mv: cannot stat 'pencil.desktop': No such file or directory 
mv: cannot stat 'pencil.png': No such file or directory 
chmod: cannot access '/usr/share/applications/pencil.*': No such file or directory 
Reading package lists... Done 
Building dependency tree        
Reading state information... Done 
0 upgraded, 0 newly installed, 0 to remove and 529 not upgraded.

And I am not sure why is not being installed. I consulted this source and also this and both sources said that there is a missing file in the folder indicated in the warning. There seems to be a missing icon or .png. But I downloaded the .deb from the official documentation. and simply 

sudo apt install ./pencil_3.1.0.ga_amd64.deb && sudo apt install -f
Kulfy
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Emanuele
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  • I'm unable to reproduce the error. On a side note, 529 not upgraded doesn't look good. – Kulfy Mar 18 '20 at 23:31
  • Thanks for reading the question. Do you think I should upgrade? Also I can't explain myself mv: cannot stat 'pencil.desktop': No such file or directory and chmod: cannot access '/usr/share/applications/pencil.*': No such file or directory – Emanuele Mar 18 '20 at 23:39
  • What does that mean? Installation should be straightforward but... – Emanuele Mar 18 '20 at 23:39
  • Uninstall (the corrupt package?) with $ sudo apt remove pencil and install this: $ sudo dpkg -i pencil_3.1.0.20200319003004_amd64.deb https://pencil.evolus.vn/Nightly.html → Start the app $ /opt/pencil-3.1.0.20200319003004/pencil ... and the "pencil GUI" opens. – Knud Larsen Mar 19 '20 at 01:09
  • P.S. : The errors happens with both packages, when you do a repeated install of the same version. – Knud Larsen Mar 19 '20 at 01:15
  • Perfect that works with the .deb given!! :) Thank you. I could not remove the old version see here. I still see the strange warning of the 529 not upgraded. I did sudo apt upgrade correctly though. If you would like to write the answer I can accept it. – Emanuele Mar 19 '20 at 01:34

1 Answers1

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rm: cannot remove /usr/share/applications/pencil.desktop: No such file .. rm: cannot remove /usr/share/applications/pencil.png: No such file

Pencil errors : The packages are packed "as wrong as possible" with scripts {postinst, postrm} containing install / remove text from the RPM package. But the text doesn't match the installed files ! Attempts to remove non installed files.

I installed the package 'pencil_3.1.0.ga' with gdebi to get the dependencies installed too. But /opt/pencil-3.1.0.ga/ was empty. Removing was done with sudo apt remove pencil and succeeded.

Install solution https://pencil.evolus.vn/dl/development/pencil_3.1.0.20200319003004_amd64.deb

$ sudo dpkg -i pencil_3.1.0.20200319003004_amd64.deb

$ /opt/pencil-3.1.0.20200319003004/pencil
        ## the pencil GUI opens

... The launcher 'pencil.desktop' is in /opt/pencil-3.1.0.20200319003004/, and can be copied to /usr/share/applications/

Knud Larsen
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