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For the past week, I have been facing this issue, for many packages that I try to install from apt.

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package **package_name** is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

This issue is with every package.

Just to mention. I have tried all the solution that has been mentioned here "But is referred to by another package." - Finding that package.

But nothing is working. I am really stuck with this package thing. My system.

Description:    Ubuntu 20.04.3 LTS
Release:    20.04
Codename:   focal

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package libwxgtk3.0-dev is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'libwxgtk3.0-dev' has no installation candidate
Ryednap
  • 103
  • Please edit your question and add a real example package name and the output of this sudo apt policy package_name. Also, check your /etc/apt/sources.list. – pLumo Oct 05 '21 at 17:03
  • what does /etc/apt/sources.list do ? . I have opened it. It contains the repo links I guess – Ryednap Oct 05 '21 at 17:12
  • The result of sudo apt policy libwxgtk3.0-dev is this ibwxgtk3.0-dev: Installed: (none) Candidate: (none) Version table – Ryednap Oct 05 '21 at 17:13
  • Ok, why do you think this package should be available? it is not available for me either. – pLumo Oct 05 '21 at 17:16
  • Actually I am trying to build a project which has following package dependencies. apt-get install gawk m4 libwxgtk3.0-dev libpcre2-dev libxerces-c-dev libspdlog-dev libuchardet-dev libssh-dev libssl-dev libsmbclient-dev libnfs-dev libneon27-dev libarchive-dev cmake g++ git – Ryednap Oct 05 '21 at 17:18
  • It is available for bionic, but not for focal. https://packages.ubuntu.com/bionic/libwxgtk3.0-dev. For focal you have libwxgtk3.0-gtk3-dev, not sure if it is the same. So the project documentation is for 18.04 maybe – pLumo Oct 05 '21 at 17:18
  • All got solved from sudo apt-get update but libwxgtk3.0-dev is still showing this error – Ryednap Oct 05 '21 at 17:19
  • Is there any alternative? for 20.04 – Ryednap Oct 05 '21 at 17:20
  • libwxgtk3.0-dev is not available for 20.04, so it is not working is normal. Try libwxgtk3.0-gtk3-dev. But you might need to enable universe repository: sudo apt-add-repository universe before, because that is not enabled by default I think. – pLumo Oct 05 '21 at 17:20
  • okay, thanks for the info. Got it. – Ryednap Oct 05 '21 at 17:21
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    Okay, It worked. Really thanks. I already had universe added – Ryednap Oct 05 '21 at 17:22

1 Answers1

2

The package libwxgtk3.0-dev is not available for Ubuntu 20.04.

I guess the documentation for your project is written for Ubuntu 18.04, for which that package name exists.

However, you can use the replacement package libwxgtk3.0-gtk3-dev.
Note: It is universe repository, which you might need to enable:

sudo apt-add-repository universe

For such issues, https://packages.ubuntu.com/ is a good website to start package research.

pLumo
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