I realized while watching my compiles that my screen looked like the perfectly stereotypical hackerscreen, so I just had to take a screenshot :)

Four panes with white text on dark gray background in an Emacs window, the first shows a guix system update (rolling compile info in terminal), the third shows guix build (rolling, more detailed compile info in terminal), the fourth shows a maven build (rolling, detailed build info in terminal), the second shows an org-mode document with instructions to update packages in Guix.

The org-mode document is my own work, the compile messagen are not copyrightable. The style is plain Emacs theme with default face inverted.

Language is German (so you can weave that into your characters if needed).