{
  stdenv,
  lib,
  librsvg,
}:

# Static assets the rust workspace reads at runtime: the project's
# branding SVG/PNG family + the claude system-prompt template +
# claude-settings JSON. Lives as its own derivation so a tweak to
# branding/agent-configs.svg or hive-ag3nt/prompts/system.md doesn't
# invalidate the rust derivation's cargo cache (closes #555 follow-up
# to #538 — naersk previously paired with `src = ./.;` invalidating
# every rust build on any branding/prompt edit; crane inherited that
# coupling and this split breaks it cleanly).
#
# Output layout:
#
#   $out/share/hyperhive/branding/{hyperhive.svg, hyperhive.png,
#                                  agent-configs.svg, agent-configs.png}
#   $out/share/hyperhive/prompts/{system.md, claude-settings.json}
#
# The agent-configs PNG is rendered at build time from the SVG via
# rsvg-convert — same shape as the old `hive-c0re/build.rs` rasteriser,
# just hoisted into nix so the librsvg dependency stays *here* instead
# of in the rust derivation's nativeBuildInputs.

stdenv.mkDerivation {
  pname = "hyperhive-assets";
  version = "0.1.0";
  # `src` is intentionally narrow — only branding/ + the hive-ag3nt/prompts/
  # subdir, NOT the whole tree. Keeps the input hash decoupled from
  # rust source / docs / nix module edits.
  srcs = [
    ../branding
    ../hive-ag3nt/prompts
  ];
  # `unpackPhase` would normally extract each src to its own dir; we
  # just want them side-by-side, so hand-roll a flat copy.
  unpackPhase = ''
    runHook preUnpack
    cp -r ${../branding} branding
    cp -r ${../hive-ag3nt/prompts} prompts
    chmod -R u+w branding prompts
    runHook postUnpack
  '';

  nativeBuildInputs = [ librsvg ];

  # No real build step — just render the agent-configs PNG alongside
  # its SVG. 300×300 matches branding/hyperhive.png, which is the size
  # Forgejo's avatar endpoint accepts without resampling on upload (the
  # same constraint hive-c0re/build.rs encoded).
  buildPhase = ''
    runHook preBuild
    rsvg-convert --width 300 --height 300 \
      -o branding/agent-configs.png \
      branding/agent-configs.svg
    runHook postBuild
  '';

  installPhase = ''
    runHook preInstall
    mkdir -p $out/share/hyperhive
    cp -r branding $out/share/hyperhive/branding
    cp -r prompts $out/share/hyperhive/prompts
    runHook postInstall
  '';

  # Pure data — no executables to fixup, no shared libs to patchelf.
  dontFixup = true;

  meta = {
    description = "hyperhive static assets (branding + claude prompts)";
    homepage = "https://forge.darkest.space/hyperhive/hyperhive";
    license = lib.licenses.mit;
  };
}