Add Nix Shell Env

app/shell.nix

@@ -0,0 +1,70 @@
+let
+nixpkgs = import (builtins.fetchTarball "https://github.com/NixOS/nixpkgs/archive/24.11-beta.tar.gz") {
+  overlays = [];
+  config = {};
+};
+
+in
+with nixpkgs;
+
+stdenv.mkDerivation {
+  name = "postgres-env";
+  buildInputs = [];
+
+  nativeBuildInputs = [
+    zsh
+    vim
+    geos
+    gdal
+    nixpkgs-fmt
+    nodejs_22
+    openssl
+    prisma
+
+    # postgres-12 with postgis support
+    (postgresql_12.withPackages (p: [ p.postgis ]))
+  ];
+
+  postgresConf =
+    writeText "postgresql.conf"
+      ''
+        # Add Custom Settings
+        log_min_messages = warning
+        log_min_error_statement = error
+        log_min_duration_statement = 100  # ms
+        log_connections = on
+        log_disconnections = on
+        log_duration = on
+        #log_line_prefix = '[] '
+        log_timezone = 'UTC'
+        log_statement = 'all'
+        log_directory = 'pg_log'
+        log_filename = 'postgresql-%Y-%m-%d_%H%M%S.log'
+        logging_collector = on
+        log_min_error_statement = error
+      '';
+
+
+  # ENV Variables
+  LD_LIBRARY_PATH = "${geos}/lib:${gdal}/lib";
+  PGDATA = "${toString ./.}/.pg";
+
+  # Post Shell Hook
+  shellHook = ''
+    echo "Using ${postgresql_12.name}."
+
+    # Setup: other env variables
+    export PGHOST="$PGDATA"
+    export PRISMA_SCHEMA_ENGINE_BINARY="${pkgs.prisma-engines}/bin/schema-engine"
+    export PRISMA_QUERY_ENGINE_BINARY="${pkgs.prisma-engines}/bin/query-engine"
+    export PRISMA_QUERY_ENGINE_LIBRARY="${pkgs.prisma-engines}/lib/libquery_engine.node"
+    export PRISMA_FMT_BINARY="${pkgs.prisma-engines}/bin/prisma-fmt"
+    export PATH="$PWD/node_modules/.bin/:$PATH"
+
+    # Setup: DB
+    [ ! -d $PGDATA ] && pg_ctl initdb -o "-U postgres" && cat "$postgresConf" >> $PGDATA/postgresql.conf
+    pg_ctl -o "-p 5555 -k $PGDATA" start
+    alias fin="pg_ctl stop && exit"
+    alias pg="psql -p 5555 -U postgres"
+  '';
+}