123456set -e78FLAKE_URL="https://kepr.uk/nina/archive/HEAD.tar.gz"9RELEASES_URL="https://kepr.uk/api/nina/releases/latest"10INSTALL_DIR="${NINA_INSTALL_DIR:-$HOME/.local/bin}"11MIN_ZIG_MINOR=161213os="$(uname -s)"14arch="$(uname -m)"15case "${os}-${arch}" in16 Linux-x86_64) platform="linux-x86_64" ;;17 Linux-aarch64|Linux-arm64) platform="linux-aarch64" ;;18 Darwin-arm64) platform="macos-aarch64" ;;19 Darwin-x86_64) platform="macos-x86_64" ;;20 *)21 printf 'nina: unsupported platform %s-%s\n' "$os" "$arch" >&222 exit 1 ;;23esac2425have() { command -v "$1" >/dev/null 2>&1; }26say() { printf 'nina: %s\n' "$1"; }27die() { say "error: $1" >&2; exit 1; }28blank() { printf '\n'; }29is_nixos() { [ -e /etc/NIXOS ]; }3031fetch_text() {32 if have curl; then curl -fsSL "$1"33 elif have wget; then wget -qO- "$1"34 else die "curl or wget required"; fi35}3637fetch_file() {38 if have curl; then curl -fsSL "$1" -o "$2"39 elif have wget; then wget -qO "$2" "$1"40 else die "curl or wget required"; fi41}42434445banner() {46 cat <<'BANNER'4748 _ __ _ _ __ __ _49 | '_ \ (_)| '_ \ / _` |50 | | | || || | | || (_| |51 |_| |_||_||_| |_| \__,_|5253 NixOS Intuitive Navigation Assistant · kepr.uk/nina5455BANNER56}57585960fetch_source() {61 srcdir="$(mktemp -d /tmp/nina-src.XXXXXX)"62 say "fetching source from Kepr..."63 fetch_file "$FLAKE_URL" "${srcdir}/nina.tar.gz" \64 || die "could not download source archive — check your connection"65 tar -xzf "${srcdir}/nina.tar.gz" -C "$srcdir" --strip-components=1 \66 || die "could not extract source archive"67 printf '%s' "$srcdir"68}69707172install_binary() {73 say "fetching release metadata..."74 meta="$(fetch_text "$RELEASES_URL" 2>/dev/null)" || return 175 [ -n "$meta" ] || return 17677 if have python3; then78 version="$(printf '%s' "$meta" | python3 -c "79import sys, json80d = json.load(sys.stdin)81print(d.get('version') or '')82" 2>/dev/null)"83 dl_url="$(printf '%s' "$meta" | python3 -c "84import sys, json85d = json.load(sys.stdin)86print((d.get('platforms') or {}).get('${platform}', {}).get('url') or '')87" 2>/dev/null)"88 cksum="$(printf '%s' "$meta" | python3 -c "89import sys, json90d = json.load(sys.stdin)91p = (d.get('platforms') or {}).get('${platform}', {})92raw = p.get('blake3') or p.get('checksum') or ''93print(raw[len('blake3:'):] if raw.startswith('blake3:') else raw)94" 2>/dev/null)"95 elif have jq; then96 version="$(printf '%s' "$meta" | jq -r '.version // empty')"97 dl_url="$(printf '%s' "$meta" | jq -r ".platforms.\"${platform}\".url // empty")"98 cksum_raw="$(printf '%s' "$meta" | jq -r ".platforms.\"${platform}\".blake3 // .platforms.\"${platform}\".checksum // empty")"99 cksum="${cksum_raw#blake3:}"100 else101 version="$(printf '%s' "$meta" | grep -o '"version":"[^"]*"' | sed 's/"version":"//;s/"//')"102 plat_block="$(printf '%s' "$meta" | grep -o "\"${platform}\":{[^}]*}" | head -1)"103 dl_url="$(printf '%s' "$plat_block" | grep -o '"url":"[^"]*"' | sed 's/"url":"//;s/"//')"104 cksum=""105 fi106107 [ -n "$dl_url" ] || return 1108 [ -n "$version" ] || version="latest"109110 say "downloading nina ${version} for ${platform}..."111 tmpfile="$(mktemp /tmp/nina.XXXXXX)"112 fetch_file "$dl_url" "$tmpfile" || { rm -f "$tmpfile"; return 1; }113114 if [ -n "$cksum" ] && have b3sum; then115 actual="$(b3sum --no-names "$tmpfile" 2>/dev/null | awk '{print $1}')"116 if [ "$actual" != "$cksum" ]; then117 say "checksum mismatch — aborting"118 rm -f "$tmpfile"119 return 1120 fi121 say "checksum verified"122 fi123124 chmod +x "$tmpfile"125 mkdir -p "$INSTALL_DIR"126 mv "$tmpfile" "${INSTALL_DIR}/nina"127 say "installed nina ${version} → ${INSTALL_DIR}/nina"128 return 0129}130131132133nixos_profile_install() {134 have nix || return 1135 say "installing nina to ~/.nix-profile/bin/nina via nix profile..."136 blank137 if nix profile install "${FLAKE_URL}#nina"; then138 return 0139 fi140 blank141 say "nix profile install failed. Common causes:"142 say " flakes not enabled — add to /etc/nix/nix.conf or ~/.config/nix/nix.conf:"143 say " experimental-features = nix-command flakes"144 say " once nina is installed: nina setup enables this automatically"145 blank146 return 1147}148149150151nixos_shell_build() {152 have nix-shell || return 1153 say "fetching source and building nina using nix-shell..."154 blank155 srcdir="$(fetch_source)"156157 158 159 build_cmd="cd '${srcdir}' && zig build -Doptimize=ReleaseSafe"160 if nix-shell -p zig_0_16 --run "$build_cmd" 2>/dev/null; then161 :162 else163 say "zig_0_16 not in channel — fetching from nixpkgs-unstable..."164 nix-shell \165 -I nixpkgs=https://releases.nixos.org/nixos/unstable/nixos-unstable/nixexprs.tar.xz \166 -p zig_0_16 \167 --run "$build_cmd" \168 || die "build failed — see output above"169 fi170171 mkdir -p "$INSTALL_DIR"172 cp "${srcdir}/zig-out/bin/nina" "${INSTALL_DIR}/nina"173 chmod +x "${INSTALL_DIR}/nina"174 blank175 say "installed from source → ${INSTALL_DIR}/nina"176 say "note: binary built outside nix — adopt ~/nina.nix into configuration.nix"177 say " to make nina fully nix-managed (nina goodbye handles removal either way)"178}179180181182generate_nixos_module() {183 184 cat > "$HOME/nina.nix" <<'NIXEOF'185# ~/nina.nix — generated by the nina installer186#187# Declares nina as a NixOS system package.188#189# Add to /etc/nixos/configuration.nix:190# imports = [ /home/YOUR_USER/nina.nix ];191# Then: sudo nixos-rebuild switch192#193# To update: nina update (or re-run the installer)194# To remove: nina goodbye (or delete this file, then nixos-rebuild switch)195#196# For flake-based configurations, add nina as a flake input instead:197# inputs.nina.url = "https://kepr.uk/nina/archive/HEAD.tar.gz";198# # in your nixosModules list: nina.nixosModules.default199# # then set: programs.nina.enable = true;200{ ... }:201{202 imports = [203 "${builtins.fetchTarball "https://kepr.uk/nina/archive/HEAD.tar.gz"}/nixos-module.nix"204 ];205 programs.nina.enable = true;206}207NIXEOF208 blank209 say "generated ~/nina.nix for system-wide installation:"210 say " 1. add to /etc/nixos/configuration.nix:"211 say " imports = [ /home/$(id -un)/nina.nix ];"212 say " 2. sudo nixos-rebuild switch"213}214215216217check_zig() {218 if ! have zig; then219 blank220 say "Zig not found. Building nina requires Zig 0.${MIN_ZIG_MINOR}+."221 blank222 say " Download: https://ziglang.org/download/"223 if is_nixos; then224 say " NixOS: nix-shell -p zig_0_16 --run 'sh install.sh'"225 fi226 blank227 die "Zig 0.${MIN_ZIG_MINOR}+ required"228 fi229230 zig_ver="$(zig version 2>/dev/null)"231 major="$(printf '%s' "$zig_ver" | cut -d. -f1)"232 minor="$(printf '%s' "$zig_ver" | cut -d. -f2)"233 ok=0234 [ "$major" -ge 1 ] 2>/dev/null && ok=1235 [ "$major" -eq 0 ] 2>/dev/null && [ "$minor" -ge "$MIN_ZIG_MINOR" ] 2>/dev/null && ok=1236237 if [ "$ok" -ne 1 ]; then238 blank239 say "found zig ${zig_ver}, but nina requires Zig 0.${MIN_ZIG_MINOR}+."240 if is_nixos; then241 say " run: nix-shell -p zig_0_16 --run 'sh install.sh'"242 else243 say " update: https://ziglang.org/download/"244 fi245 blank246 die "Zig 0.${MIN_ZIG_MINOR}+ required; found ${zig_ver}"247 fi248249 say "zig ${zig_ver} found"250}251252253254build_from_source() {255 say "building from source..."256 check_zig257258 if [ -f "build.zig" ] && [ -f "src/main.zig" ]; then259 srcdir="."260 else261 srcdir="$(fetch_source)"262 fi263264 (cd "$srcdir" && zig build -Doptimize=ReleaseSafe) \265 || die "build failed — see output above"266267 mkdir -p "$INSTALL_DIR"268 cp "${srcdir}/zig-out/bin/nina" "${INSTALL_DIR}/nina"269 chmod +x "${INSTALL_DIR}/nina"270 say "installed from source → ${INSTALL_DIR}/nina"271}272273274275check_path() {276 case ":${PATH}:" in277 *":${INSTALL_DIR}:"*) ;;278 *)279 blank280 say "${INSTALL_DIR} is not in your PATH. Add it:"281 say " export PATH=\"\${PATH}:${INSTALL_DIR}\""282 say " echo 'export PATH=\"\${PATH}:${INSTALL_DIR}\"' >> ~/.bashrc"283 if is_nixos; then284 say " NixOS: add to environment.sessionVariables in configuration.nix"285 fi286 ;;287 esac288}289290291292farewell() {293 printf '\n'294 printf ' thank you!! running nina update occasionally will keep me in tip top shape.\n'295 printf ' get started by running nina hello\n'296 printf '\n'297 printf ' if nina turns out not to be for you, nina goodbye will remove her cleanly.\n'298 printf '\n'299}300301302303banner304305if is_nixos; then306 say "NixOS detected"307 if nixos_profile_install; then308 generate_nixos_module309 farewell310 exit 0311 fi312 nixos_shell_build313 generate_nixos_module314 check_path315 farewell316 exit 0317fi318319320if install_binary; then321 check_path322 farewell323 exit 0324fi325326say "no pre-built binary for ${platform} — falling back to source build"327build_from_source328check_path329farewell