building appimage on the nixos for debian

packaging/appimage/AppRun

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+#!/bin/bash
+
+set -u
+
+umask 077
+
+if [[ -z "${APPDIR:-}" ]]; then
+    echo "Komp AC: APPDIR is not set by the AppImage runtime" >&2
+    exit 1
+fi
+
+data_home="${XDG_DATA_HOME:-${HOME:?HOME is not set}/.local/share}"
+data_root="${KOMP_AC_DATA_DIR:-$data_home/komp_ac}"
+postgres_root="$data_root/postgresql"
+dump_root="$data_root/dumps"
+tantivy_root="$data_root/tantivy_indexes"
+secret_file="$data_root/jwt.secret"
+log_file="$data_root/server.log"
+lock_dir="$data_root/appimage.lock"
+server="$APPDIR/usr/bin/komp-ac-server"
+gui="$APPDIR/AppRun.gui"
+server_db_mode_file="$APPDIR/usr/share/komp-ac/server-db-mode"
+
+if [[ ! -r "$server_db_mode_file" ]]; then
+    echo "Komp AC: bundled server database mode is missing" >&2
+    exit 1
+fi
+server_db_mode="$(<"$server_db_mode_file")"
+if [[ "$server_db_mode" != embedded && "$server_db_mode" != external ]]; then
+    echo "Komp AC: invalid bundled server database mode: $server_db_mode" >&2
+    exit 1
+fi
+
+mkdir -p "$data_root" "$postgres_root" "$dump_root" "$tantivy_root"
+
+if [[ ! -s "$secret_file" ]]; then
+    secret_tmp="$secret_file.$$"
+    if ! od -An -N 48 -tx1 /dev/urandom | tr -d ' \n' > "$secret_tmp"; then
+        rm -f -- "$secret_tmp"
+        echo "Komp AC: could not generate the local server secret" >&2
+        exit 1
+    fi
+    chmod 600 "$secret_tmp"
+    if [[ -e "$secret_file" ]]; then
+        rm -f -- "$secret_tmp"
+    else
+        mv -- "$secret_tmp" "$secret_file"
+    fi
+fi
+
+if ! mkdir "$lock_dir" 2>/dev/null; then
+    lock_pid=""
+    if [[ -r "$lock_dir/pid" ]]; then
+        read -r lock_pid < "$lock_dir/pid" || true
+    fi
+    if [[ "$lock_pid" =~ ^[0-9]+$ ]] && kill -0 "$lock_pid" 2>/dev/null; then
+        echo "Komp AC is already running (launcher PID $lock_pid)." >&2
+        exit 1
+    fi
+    rm -f -- "$lock_dir/pid"
+    if ! rmdir "$lock_dir" 2>/dev/null || ! mkdir "$lock_dir" 2>/dev/null; then
+        echo "Komp AC: could not acquire the application lock at $lock_dir" >&2
+        exit 1
+    fi
+fi
+printf '%s\n' "$$" > "$lock_dir/pid"
+
+server_pid=""
+cleanup() {
+    status=$?
+    trap - EXIT INT TERM HUP
+    if [[ -n "$server_pid" ]] && kill -0 "$server_pid" 2>/dev/null; then
+        kill -TERM "$server_pid" 2>/dev/null || true
+        wait "$server_pid" 2>/dev/null || true
+    fi
+    rm -f -- "$lock_dir/pid"
+    rmdir "$lock_dir" 2>/dev/null || true
+    exit "$status"
+}
+trap cleanup EXIT
+trap 'exit 130' INT
+trap 'exit 143' TERM
+trap 'exit 129' HUP
+
+export GRPC_ENDPOINT="http://127.0.0.1:50051"
+
+if (exec 3<>/dev/tcp/127.0.0.1/50051) 2>/dev/null; then
+    echo "Komp AC: local port 50051 is already in use" >&2
+    exit 1
+fi
+
+RUST_DB_MODE="$server_db_mode" \
+KOMP_AC_POSTGRES_DIR="$postgres_root" \
+PG_DUMP_DIR="$dump_root" \
+TANTIVY_INDEX_DIR="$tantivy_root" \
+JWT_SECRET="$(<"$secret_file")" \
+GRPC_LISTEN_ADDRESS="127.0.0.1:50051" \
+"$server" server >> "$log_file" 2>&1 &
+server_pid=$!
+
+ready=false
+for ((attempt = 0; attempt < 600; attempt++)); do
+    if ! kill -0 "$server_pid" 2>/dev/null; then
+        wait "$server_pid" || true
+        echo "Komp AC: the bundled server failed to start; see $log_file" >&2
+        exit 1
+    fi
+    if (exec 3<>/dev/tcp/127.0.0.1/50051) 2>/dev/null; then
+        ready=true
+        break
+    fi
+    sleep 0.1
+done
+
+if [[ "$ready" != true ]]; then
+    echo "Komp AC: the bundled server did not become ready; see $log_file" >&2
+    exit 1
+fi
+
+"$gui"