Literate Emacs configuration

This is my literate Emacs configuration. It was initially fine-tuned for Python, C, C++, FORTRAN and Lisp development, but it has grown far beyond the initial scope. I use use-package extensively, which ensures a reproducible configuration.

Useful tweaks

I use Emacs mainly on NixOS, with Qtile as desktop environment. I like to use the systemd unit of emacsclient. It speeds up the startup process as the heavy config file is uploaded only once. A very good explanation can be found here. After editing the config file, the unit must be reloaded:

systemctl --user restart emacs

To use emacsclient with the GUI application, the file ~/.local/share/applications/emacsclient.desktop must be created with the following content:

[Desktop Entry]
Name=Emacs (Client)
GenericName=Text Editor
Comment=Edit text
MimeType=text/english;text/plain;text/x-makefile;text/x-c++hdr;text/x-c++src;text/x-chdr;text/x-csrc;text/x-java;text/x-moc;text/x-pascal;text/x-tcl;text/x-tex;application/x-shellscript;text/x-c;text/x-c++;
Exec=emacsclient -с -a "emacs" %F
Icon=emacs
Type=Application
Terminal=false
Categories=Development;TextEditor;Utility;
StartupWMClass=Emacs