Trouble installing Lazarus

jsgsix · 2025-08-22 22:34

I originally installed Lazarus from the q4os repository. Seemed to work ok, but then developed trouble booting. There are more recent versions of Lazarus so I down loaded the essential deb file from source forge. I first opened synaptic and uninstalled all installed Lazarus installations. I then clicked on the deb file and it seemed to be loading successfully, but at the end presented this message: "Simulation not successful, sorry, I cannot install now. Cleaning and canceling ..." What is happening? What file do we need to download and install for the latest Lazarus on q4os?

hchiper · 2025-08-23 07:12

It is always recommended to install packages from Q4OS repositories, as they are thoroughly tested. It would be a better solution to solve what you call "trouble booting". Such trouble shouldn't happen. It might have its cause somewhere else (maybe a coincidence it happens just after Lazarus install).

Your problem with the downloaded deb file may arise because it is incompatible with your installed Q4OS version, I guess with the dependencies, i.e. other programs or libraries that need to be installed at the same time, but that cannot because their (more recent) versions would overwrite the already installed version and create issues.

For example, I remember having compiled and installed from source a recent version of sqlite3, and this completely corrupted the Plasma Desktop Environment (installing this way installing this way doesn't check anything and overwrites silently).

In your case, by "chance", Synaptic did the check and refused to install because the check wasn't successful. You should search for error messages to understand what the problem is and maybe confirm the dependencies hypothesis.

Edit

Did you follow installation instructions?

Last edited by hchiper (2025-08-23 07:40)

jsgsix · 2025-08-23 13:26

Lazarus will not even come up on the "Install Applications" button. Also, when it was there it was hopelessly outdated. When will Q4OS update its repository for Lazarus? The latest stable version is 4.0. A repository installation is the only sane way for an amateur like myself to effectively install Lazarus.

Last edited by jsgsix (2025-08-28 04:24)

jsgsix · 2025-08-23 13:43

Synaptic comes up with so many replies that an amateur like me has no idea what or how to download, or how to install them. Also, their list does not contain the most recent versions of Lazarus.

hchiper · 2025-08-23 22:44

jsgsix wrote:

Synaptic comes up with so many replies that an amateur like me has no idea what or how to download, or how to install them. Also, their list does not contain the most recent versions of Lazarus.

I may be wrong, but I see Synaptic as no more than a graphical tool enabling the user to do no more than what the command line 'apt` can do. Don't expect to find in Synaptic more recent versions available out of the box than those available from 'apt`.

My suggestion is to "undo" all what you did with Synaptic. If, as I presume, you don't remember exactly what you did, then forget Synaptic, open a terminal (Konsole if you are using Plasma) and type these commands:

sudo apt remove --purge lazarus*
sudo apt update
sudo apt install lazarus

Look carefully at the (long) outputs of these commands for error messages. If any, they will help identifying the problem.

If you still have problems, please give the most detailed information as possible; simply saying "startup problem" won't help guess where the problem lies.

Last edited by hchiper (2025-08-24 09:24)

jsgsix · 2025-08-25 14:26

When I tried to enter the suggested commands above my Linux Konsole asked for my password. I do not recall ever setting up a password except for my login. I tried that but it was rejected.

Last edited by jsgsix (2025-08-28 04:14)

hchiper · 2025-08-25 15:36

In your original post, you wrote that you "originally installed Lazarus from the q4os repository". You had to type your password to do that, otherwise how did you install it?
The commands I suggested above need exactly that same password.
Did you double check you typed it correctly (characters aren't echoed)? Pay attention to uppercase/lowercase.
Or are you using now a different user account than the one you used on your first install of Lazarus?
Or did you define a password for your login and another one for the root account and you gave the second one on your first install of Lazarus and don't remember now that you used the second one?
Sorry if my questions seem stupid, I just try to understand what the problem can be.

Q4OS Forum

#1 2025-08-22 22:34

Trouble installing Lazarus

#2 2025-08-23 07:12

Re: Trouble installing Lazarus

#3 2025-08-23 13:26

Re: Trouble installing Lazarus

#4 2025-08-23 13:43

Re: Trouble installing Lazarus

#5 2025-08-23 22:44

Re: Trouble installing Lazarus

#6 2025-08-25 14:26

Re: Trouble installing Lazarus

#7 2025-08-25 15:36

Re: Trouble installing Lazarus

Board footer