postgres_migration/shell.nix

{ pkgs ? import <nixpkgs> { } }:

with pkgs;

let
  sql_file = "psql_creation.sql";
  data_dir = "$(pwd)/.pgdata";
  origin = "databases/odyfo.db";

in mkShell {
  buildInputs = [ postgresql python27 python27Packages.virtualenv ];

  shellHook = ''
    trap "kill 0" EXIT
    export PGDATA="${data_dir}"
    export PGHOST="${data_dir}"

    if [ ! -d ${data_dir} ]; then
      initdb --auth-local=trust --no-locale --encoding=UTF8
    fi

    if ! pg_ctl status; then
      pg_ctl start -o "--unix_socket_directories=${data_dir} --listen_addresses='''"
    fi

    alias psql='psql -d postgres'
    alias nuke='rm -rf ${data_dir}'

    # Workaround to use pip
    SOURCE_DATE_EPOCH=$(date +%s)
    virtualenv .venv
    export PATH=$PWD/.venv/bin:$PATH
    pip install etlalchemy
    pip install psycopg2
  '';
}