How to compile weechat's python plugin

weechat-python313.bash

#!/bin/bash
set -e
shopt -s nullglob

# This is a guide how to resolve an issue with weechat python plugin crashes.

# In short: python 3.12 is buggy, use 3.13.
# If you have python3.12 and weechat installed on your system, you can
# additionally install python3.13, recompile the weechat's python plugin
# linked to 3.13 and put it in ~/.local/share/weechat/plugins/ directory.


### GET SOURCE CODE ###

# python plugin must be compiled for the corresponding version of weechat
# e.g. 4.3.2
version=$(weechat --version)
echo "Installed version of weechat: $version"

echo "Fetching weechat source code (tag v$version)"
# tag name is "v4.3.2"
git clone --depth 1 --branch "v$version" git@github.com:weechat/weechat.git
cd weechat


### CHOOSE PYTHON VERSION ###

echo "Looking for the pkgconfig directory:"
# find where python3.pc or python3-embed.pc is located in your system
# e.g. /usr/lib/pkgconfig/python3-embed.pc
locate --basename python3-embed.pc ||
locate --basename python3.pc

echo "Select python version that you need (NOT 3.12):"
# e.g. /usr/lib/pkgconfig/python-3.13-embed.pc
path=$(locate --basename python3.pc | xargs -r dirname)
select python_pc in "$path"/python*.pc
do
	echo "selection: ${python_pc@Q}. CTRL+D to confirm"
done || true
test -n "$python_pc"
echo "selected: ${python_pc@Q}"


### BUILD PYTHON PLUGIN ###

# in cmake/FindPython.cmake replace "python3-embed" with your version
# e.g. python-3.13-embed
name=$(basename "$python_pc" .pc)
sed -e "s/python3-embed/$name/" -i ./cmake/FindPython.cmake

mkdir build; cd build
cmake .. -DENABLE_{PHP,RUBY}=OFF ||
{
	cat <<-EXPLANATION
	 ***

	Failed to run cmake, ccmake TUI will be launched...

	Read the output from cmake above and note error messages "XXX not found"
	(they are probably red). Your task is to disable ENABLE_XXX options
	for those XXX, then press <c> and <g>.
	Or you can disable them ALL, but you must keep ENABLE_PYTHON and ENABLE_SCRIPTS.

	If you are unfamiliar with ccmake, use keys <j>/<k> to go down/up,
	press <space> to toggle options, then <c> to configure,
	and eventually <g> to generate (after successful configuration).

	EXPLANATION
	read -sp $'Remember instructions above and press Enter to launch ccmake...\n'
	ccmake ..
}

# build ./src/plugins/python/python.so file
make python


### PUT PYTHON PLUGIN INTO USER's WEECHAT DATA DIR ###

plugin_dir="$HOME/.local/share/weechat/plugins"
echo "Copying ./src/plugins/python/python.so into ${plugin_dir}."
echo "This will override system-wide version of the plugin."
mkdir -p "$plugin_dir"
ln ./src/plugins/python/python.so "$plugin_dir/" || true


### CLEAN UP ###
echo "Remove the weechat repository if you don't need it anymore"
echo "Or remove the weechat/build/ directory, which was created by this script"
make clean

The issue: weechat/weechat#2046