Uninstall qt 4 from mac os - macos

I just installed wrong qt version on my Mac OS. Qt version is 4.8.5. Qt5 is installed into a separate folder, but version 4 is spread over the system, I cannot just delete one folder.
Is there an easy way to uninstall it?

If I remember correctly, there is python script somewhere in /Developer/qt/tools.../uninstall-qt.py
I'm not sure about the names, but you'll recognise the script.
Also, you'll have to run it with sudo, smth like this:
sudo python ./uninstall-qt.py
I hope it helps.

With later versions of macOS and Qt, the solution seems to be to run the MaintenanceTool, as described on the Qt wiki and in another answer.
You should find the tool in ~/Library/Qt.

Related

App failed to start because it could not find Qt platform plugin "Windows" in ""

I have been bogging my mind on this one for a few days with various versions of python and freeze utilities.
Python 3.6, PyQt5
I created a script, and am trying to make a standalone .exe
However, when running pyinstaller, I get the result I have posted below. I am currently using an Anaconda distribution, so I am not sure if this has anything to do with it. How do I resolve this issue?
I have tried to fix it for several days using different python and pyqt versions, but the short story is that some of the libraries I am using come into conflict in other versions. I am posting this again because nothing else has really worked, and I am on my last straws.
Thanks in advance.
Error Window:
From this page:
PyQt5 - Failed to load platform plugin "windows". Available platforms are: windows, minimal
this answer solved my problem.
Copying the folder platforms from python installation directory into my built folder solved the problem. the "platforms" folder contains qminimal.dll.
Maybe it helps you too!
Can you try to install Anaconda in a folder that does not use non-ascii characters?
Also, you say you have done conda update --all, but your Qt version states 5.6.0. Last week we released version 5.6.2, so conda update --all should have got that version for you.
Perhaps try conda update qt and see that it installs 5.6.2?

Where to put node folder for node.js install?

It's currently in the directory:
/Users/myusername/node
but I feel like it should be closer to root? Maybe in /Developer? I'm having trouble finding an other advice online. I'm on macosx lion right now.
Thanks!
There is also now a Macintosh(or Windows) installer available for current releases(0.6.18 currently the latest at time of this writing). The universal .pkg installer will handle the everything for you so you don't need to worry about it :-)
If you want to know where the install ends up, I recently installed v0.6.17 on OSX Lion 10.7.4 and it looks like most of the files are under /usr/local/. Shell commands in /usr/local/bin/. Global node_modules and npm in /usr/local/lib/node_modules.
Hope that helps!
Since you're on Mac OS X you can use homebrew to manage the installation of a number of things that have recipes. Node.js is one of them.
Link
Once homebrew is installed and up to date you can simply run a command like the following.
brew install node.js

Best place to install Jython on Mac

I'm trying to install Jython on my Mac (Snow Leopard). The installer prompts me to install it under
/Users/myusername/jython2.5.2
However this seems to be an inappropriate place to install an interpreter core, library modules etc...
Any suggestions as to where might be a more appropriate folder... What about
/User/bin/jython2.5.2
Would there be any side-effects of doing this?
I would go with /usr/local/bin, as that is the standard directory for user-installed binaries in the rest of the *nix world. Plus, it's already in your PATH. Using Homebrew helps managing these things.
If you use Homebrew you don't have to worry about these things.
brew install jython

Uninstall python 3.2 on mac os x 10.6.7

According to the documentation from python.org, python 3.2 install on mac os requires an upgrade to tcl/tk 8.5.9 (for use of IDLE). In my haste, I have done both. Now my friend told me that python 3 is not recommended yet because only the built-ins and a few modules have been released for 3. The stable one so far is 2.7 (especially if one wants to make extensive use of a variety of modules). My machine has both 2.6.1 and 3.2 (because some OS services make use of 2.6.1 that comes as default with the OS).
1. How do i remove 3.2 completely to avoid any compatibility issues?
tcl/tk 8.5.9 was also installed and this is not the default. There was no verbose mode during installation, so I don't know whether it replaced the default one. If it did how bad can it be for the OS? and hence
2. If the above is really bad, how do i downgrade to the old version of tcl/tk?
In short, how do i bring my machine back to its original state? If anyone knows all the paths to the directories and files I can do it manually.
Thanks
Since Python installs using a package manager, you can use Suspicious Package to look at the install script and where everything is installed.
Be aware this is for demonstration purposes only. My environment is OSX 10.6.8 and am uninstalling python-3.2.2-macosx10.6.dmg.
sudo rm -Rfv /Library/Frameworks/Python.framework/ /Applications/Python\ 3.2/
cd /usr/local/bin/
sudo rm -fv 2to3 2to3-3.2 idle3 idle3.2 pydoc3 pydoc3.2 python3 python3-32 python3-config python3.2 python3.2-32 python3.2-config python3.2m python3.2m-config pythonw3 pythonw3-32 pythonw3.2 pythonw3.2-32 /Developer/Documentation/Python/Reference\ Documentation\ 3.2
I did the same (3.2 on a mac 10.6) and:
-Moved both the Python 3.2 folder and the ActiveState ActiveTcl folder from the Applications Folder to the Trash.
-Moved the Python.framework folder from the Library/Frameworks folder to the Trash.
Running System profiler shows only the 2.6 version of Python.
Marcos
just uninstall 3x version of python if you have already installed it. Eclipse has that option when you click "see whats already installed".
Install later 2.7 version. It works for me on my OS X 10.9.2 with Eclipse Juno.

confused about macports

I am using MacBook Pro Mac OS 10.5 with related version of XCode. I am new to this development environment. I am learning macports, and I read information about macports from http://www.macports.org/. But I am still confused what macports is after reading information from this site.
I am previous working on Windows and Linux, could anyone let me know what macports is (in easy words) and what is the similar item on Windows/Linux?
thanks in avdance,
George
macports is a way of getting executables and other compiled code installed on your computer without having to work out the details of compiling/linking each apllication.
It is equivalent to a package manager under Linux and other Unicies. There is no direct equivalent under Windows.
It is just a convenient way to install a lot of *nix soft on your mac book. They are installed separately (not overwriting) from binaries/daemons/libs already installed on your mac (by default in folder /opl/local). Also they are much fresher than those installed on your mac.
For example 10.6 ships with bash 3.2, but after running sudo port install bash, you will get version 4.x (to make it your default shell add /opt/local/bin/bash to file /private/etc/shells, run chsh -s /opt/local/bin/bash and reopen terminal).
Note other os x package managers: fink and homebrew (superuser question)

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