fonts-nerd-symbols rebuilds Symbols Nerd Font from Nerd Fonts upstream source inputs.

Run from the repository root:

    ./debian/scripts/prepare-upstream 3.4.0+dfsg

This sparse-clones the Nerd Fonts v3.4.0 source inputs needed for Symbols Only into build/fonts-nerd-symbols-3.4.0+dfsg/upstream-src, removes the unlicensed Font Logos source files, copies debian/ into that source tree, and writes build/fonts-nerd-symbols_3.4.0+dfsg.orig.tar.xz for debuild.

During package build, debian/scripts/build-clean-symbols generates the installed fonts from the shipped source inputs: it regenerates the Seti/custom source font from upstream SVGs, then runs font-patcher twice against NerdFontsSymbolsNerdFontBlank.sfd: once for SymbolsNerdFont-Regular.ttf and once with --mono for SymbolsNerdFontMono-Regular.ttf. It enables all Symbols Only glyph sets except --fontlogos.

The installed fonts are rebuilt from shipped source inputs. Font Logos is excluded because upstream license-audit.md lists it as Unlicensed and Debian's Nerd Fonts notes flag logo glyphs as likely non-distributable.
