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I want to link all LLVM libraries in my cmake C++ project.

I use llvm-config --components to get all the components of LLVM, it gives me:

NOTE: There have been several EDITs to the question, as per comments. They are indicated below, and separated by lines. As of now, the only remaining issue seems to be that numpy cannot load, possibly (but not certainly) due to two alternative python 3.8 systems present.

I have updated my msys2 system a couple of months ago. That apparently included an update from python 3.7 to 3.8, but which left me with two broken pythons: I can start python when it is 3.7, but there are no associated packages, and I cannot start python when it is 3.8, which is the version holding packages. I do not know what went wrong with that, or what did I do wrong. I just noticed this now with the first time I mean to use python again after the upgrade.

I will describe here a sequence of steps I followed and what I found. I will post supporting code below for clarity.

1. I can start python, but pandas (e.g.) and many other packages are not found in python. Checking further, /mingw64/lib/python3.7/site-packages is essentially empty (surely emptied when upgrading to 3.8).

2. Looking for the pandas package, I found I have one version installed.

3. The pandas version is for python 3.8, surely upgraded from 3.7.

4. I redirected PYTHONPATH from 3.7 to 3.8

5. Now I cannot even start python. EDIT Now I can start python, with some misconfiguration issues (i.e., partially fixed).

Now the question is

How can I fix python3.8, which gives the error below?

ImportError: cannot import name 'open_code' from 'io' (unknown location)

How can I fix python3.8, which gives the problems below?

New problems:

5.1. I should have python pointing to 3.8, and also fix packages.

5.2. Some modules are not found, some other are.

Note: I don't know if Msys2 upgrade breaks python2-pyqt5 has anything to do with this.

Related:

https://github.com/tox-dev/tox/issues/1334

https://github.com/yan12125/python3-android/issues/19

https://python-forum.io/Thread-Fatal-Python-error-init-sys-streams-can-t-initialize-sys-standard-streams-Attribute

TL;DR: Supporting code

1. pandas not found

   ...

I'm still quite a newbie with Python and PyQt5, so I have a really basic question. My idea is to build application to download a URL. Here is a picture of my design:

When I right click on the URL from any website, copy it, and go to my application and press on icon on toolbar named (Add URL), the URL should be pasted immediately inside the QLineEdit.

Here is my code:

I am working with scapy in windows environment. But I cannot read the output on console. The problem is with my specific file where I have imported scapy. If I directly run scapy then the output on console is in readable format.

I have been able to accomplish a single level deep of v-model two-way binding on a custom component, but need to take it one level deeper.

Current working code:

I basically wanna make a single window application where the user will be able to draw segment lines. The application flow should be:

1. The user clicks the unique button of the app in order to start the process
2. The user selects by clicking the first point of the segment
3. The user selects by clicking the second point of the segment

I already have the following piece of code: