320 lines
10 KiB
Bash
320 lines
10 KiB
Bash
#!/usr/bin/env bash
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# shellcheck disable=SC2086
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# Downloads and installs the latest stable lazygit from
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# https://github.com/jesseduffield/lazygit/releases
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#
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# Supported platforms:
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# macOS : Apple Silicon (arm64), Intel (x86_64)
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# Linux : x86_64, aarch64/arm64, armv6
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# FreeBSD : x86_64
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# Windows : Git Bash / MSYS2 / Cygwin (.zip install)
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set -euo pipefail
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# ────────────────────────────────────────────
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# Constants
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# ────────────────────────────────────────────
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REPO="jesseduffield/lazygit"
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API_URL="https://api.github.com/repos/${REPO}/releases"
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INSTALL_DIR="${HOME}/.local/bin"
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# ────────────────────────────────────────────
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# Utility functions (all stderr output)
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# ────────────────────────────────────────────
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info() { echo "[INFO] $*" >&2; }
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warn() { echo "[WARN] $*" >&2; }
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error() {
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echo "[ERROR] $*" >&2
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exit 1
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}
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success() { echo "[OK] $*" >&2; }
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# ────────────────────────────────────────────
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# Ensure Homebrew is available on macOS
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# ────────────────────────────────────────────
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ensure_brew() {
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if command -v brew &>/dev/null; then
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return 0
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fi
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info "Homebrew is not installed. Installing Homebrew..."
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/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
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if [ -d /opt/homebrew/bin ]; then
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export PATH="/opt/homebrew/bin:$PATH"
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fi
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if [ -d /usr/local/bin ]; then
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export PATH="/usr/local/bin:$PATH"
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fi
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command -v brew &>/dev/null || error "Homebrew installation failed. Install it manually: https://brew.sh/"
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success "Homebrew installed"
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}
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error() {
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echo "[ERROR] $*" >&2
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exit 1
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}
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success() { echo "[OK] $*" >&2; }
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# ────────────────────────────────────────────
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# Check for git (required by lazygit)
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# ────────────────────────────────────────────
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if ! command -v git &>/dev/null; then
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info "git is not installed. Installing git..."
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case "$(uname -s)" in
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Darwin)
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ensure_brew
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brew install -y git
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success "git installed via Homebrew"
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;;
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Linux)
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if command -v apt-get &>/dev/null; then
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sudo apt-get update -y && sudo apt-get install -y git
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success "git installed via apt-get"
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elif command -v dnf &>/dev/null; then
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sudo dnf install -y git
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success "git installed via dnf"
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elif command -v yum &>/dev/null; then
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sudo yum install -y git
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success "git installed via yum"
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elif command -v zypper &>/dev/null; then
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sudo zypper -n install git
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success "git installed via zypper"
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elif command -v pacman &>/dev/null; then
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sudo pacman -S --noconfirm git
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success "git installed via pacman"
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else
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error "No supported package manager found. Install git manually."
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fi
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;;
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*)
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error "Cannot auto-install git on this OS. Please install git manually."
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;;
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esac
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# Verify git is now available
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if ! command -v git &>/dev/null; then
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error "git installation failed. Please install git manually and re-run this script."
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fi
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fi
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info "git is available: $(command -v git)"
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# ────────────────────────────────────────────
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# Check required commands
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# ────────────────────────────────────────────
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for cmd in curl uname; do
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command -v "$cmd" &>/dev/null || error "'$cmd' command is required."
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done
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# Fallback: use python3 if jq is not available
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if command -v jq &>/dev/null; then
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_json_latest_tag() {
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jq -r '[.[] | select(.prerelease==false)] | .[0].tag_name'
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}
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else
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command -v python3 &>/dev/null || error "'jq' or 'python3' is required."
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_json_latest_tag() {
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python3 -c "
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import sys, json
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data = json.load(sys.stdin)
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for r in data:
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if not r.get('prerelease'):
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print(r['tag_name'])
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break
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"
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}
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fi
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# ────────────────────────────────────────────
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# OS / Architecture detection
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# ────────────────────────────────────────────
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# Returns: "<asset_name>:<archive_format>"
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# asset_name = lazygit_X.XX.X_PLATFORM
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# archive_format = tar.gz | zip
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detect_platform() {
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local os arch
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os="$(uname -s)"
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arch="$(uname -m)"
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case "$os" in
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# ── macOS ──────────────────────────────────────────────
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Darwin)
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case "$arch" in
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arm64) echo "darwin_arm64:tar.gz" ;;
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x86_64) echo "darwin_x86_64:tar.gz" ;;
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*) error "Unsupported macOS architecture: $arch" ;;
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esac
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;;
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# ── Linux (including Raspberry Pi) ──────────────────
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Linux)
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case "$arch" in
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x86_64 | amd64)
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echo "linux_x86_64:tar.gz"
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;;
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aarch64 | arm64)
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# RPi 4/5, 64bit OS
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echo "linux_arm64:tar.gz"
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;;
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armv7l)
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# RPi 2/3, 32bit OS - use armv6 as fallback
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echo "linux_armv6:tar.gz"
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;;
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armv6l)
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# RPi Zero / 1
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echo "linux_armv6:tar.gz"
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;;
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i686 | i386)
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echo "linux_32-bit:tar.gz"
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;;
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*)
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error "Unsupported Linux architecture: $arch"
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;;
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esac
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;;
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# ── FreeBSD ────────────────────────────────────────────
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FreeBSD)
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case "$arch" in
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amd64 | x86_64) echo "freebsd_x86_64:tar.gz" ;;
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*) error "FreeBSD x86_64 is only supported (current: $arch)" ;;
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esac
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;;
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# ── Windows (Git Bash / MSYS2 / Cygwin) ───────────────
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MINGW* | MSYS* | CYGWIN*)
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warn "Windows environment (Git Bash/MSYS2/Cygwin) detected."
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warn "Native .exe will be installed."
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case "$arch" in
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x86_64) echo "windows_x86_64:zip" ;;
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aarch64) echo "windows_arm64:zip" ;;
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i686) echo "windows_32-bit:zip" ;;
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*) error "Unsupported Windows architecture: $arch" ;;
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esac
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;;
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*)
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error "Unsupported OS: $os (uname -a: $(uname -a))"
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;;
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esac
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}
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# ────────────────────────────────────────────
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# Get latest stable release tag
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# ────────────────────────────────────────────
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get_latest_tag() {
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info "Fetching latest release from GitHub API..."
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local releases
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releases="$(curl -fsSL "${API_URL}")" || error "Failed to call GitHub API."
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local tag
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tag="$(echo "$releases" | _json_latest_tag)"
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[[ -z "$tag" || "$tag" == "null" ]] && error "Could not find latest release tag."
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echo "$tag"
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}
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# ────────────────────────────────────────────
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# Build download URL
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# ────────────────────────────────────────────
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build_download_url() {
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local tag="$1"
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local platform="$2" # e.g. darwin_arm64, linux_x86_64
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local ext="$3" # tar.gz | zip
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local version="${tag#v}" # Remove 'v' prefix
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local filename="lazygit_${version}_${platform}.${ext}"
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echo "https://github.com/${REPO}/releases/download/${tag}/${filename}"
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}
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# ────────────────────────────────────────────
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# Download, extract & install
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# ────────────────────────────────────────────
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download_and_install() {
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local url="$1"
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local ext="$2"
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local is_windows="${3:-false}"
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local tmpdir
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tmpdir="$(mktemp -d)"
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trap '[[ -d "${tmpdir:-}" ]] && rm -rf "$tmpdir"' EXIT
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local filename
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filename="${url##*/}"
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info "Downloading: $url"
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curl -fsSL --progress-bar -o "${tmpdir}/${filename}" "$url" ||
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error "Download failed: $url"
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info "Extracting..."
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case "$ext" in
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tar.gz)
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command -v tar &>/dev/null || error "'tar' command is required."
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tar -xzf "${tmpdir}/${filename}" -C "$tmpdir"
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;;
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zip)
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if command -v unzip &>/dev/null; then
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unzip -q "${tmpdir}/${filename}" -d "$tmpdir"
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elif command -v tar &>/dev/null; then
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tar -xf "${tmpdir}/${filename}" -C "$tmpdir"
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else
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error "'unzip' or 'tar' (Windows 10+) is required."
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fi
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;;
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*)
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error "Unknown archive format: $ext"
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;;
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esac
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# Binary name
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local bin_name="lazygit"
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[[ "$is_windows" == "true" ]] && bin_name="lazygit.exe"
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local bin_src
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bin_src="$(find "$tmpdir" -maxdepth 3 -type f -name "$bin_name" | head -1)"
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[[ -z "$bin_src" ]] && error "Cannot find '$bin_name' in the archive."
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# Create install directory
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mkdir -p "$INSTALL_DIR"
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local install_path="${INSTALL_DIR}/${bin_name}"
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info "Installing: ${install_path}"
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cp "$bin_src" "$install_path"
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chmod +x "$install_path"
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success "Installation complete!"
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info "Version check:"
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"$install_path" --version || true
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# PATH instructions
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if ! echo ":${PATH}:" | grep -q ":${INSTALL_DIR}:"; then
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warn "'${INSTALL_DIR}' is not in your PATH."
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warn "Add this line to your ~/.bashrc or ~/.zshrc:"
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warn " export PATH=\"\$HOME/.local/bin:\$PATH\""
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fi
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}
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# ────────────────────────────────────────────
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# Main
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# ────────────────────────────────────────────
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main() {
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local platform_info platform ext is_windows tag url
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platform_info="$(detect_platform)"
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platform="${platform_info%%:*}"
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ext="${platform_info##*:}"
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info "Detected platform: $platform (format: $ext)"
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is_windows="false"
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[[ "$platform" == "windows"* ]] && is_windows="true"
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tag="$(get_latest_tag)"
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info "Latest release: $tag"
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url="$(build_download_url "$tag" "$platform" "$ext")"
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download_and_install "$url" "$ext" "$is_windows"
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}
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main "$@"
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