postgres_migration/shell.nix

40 lines
1018 B
Nix

{ pkgs ? import <nixpkgs> { } }:
with pkgs;
let
mysql_file = "mysql.sql";
psql_file = "psql.sql";
mysql_dir = "$(pwd)/.mysql";
psql_dir = "$(pwd)/.pgdata";
socket = "${mysql_dir}/mysql.sock";
in mkShell {
buildInputs = [ mysql57 postgresql pgloader ];
shellHook = ''
trap "kill 0" EXIT
export PGDATA="${psql_dir}"
export PGHOST="${psql_dir}"
# MySQL initialization
if [ ! -d ${mysql_dir} ]; then
mysqld --datadir="${mysql_dir}" --socket="${socket}" --initialize-insecure
fi
mysqld --datadir="${mysql_dir}" --socket="${socket}" --skip-networking &
sleep 1
# PostgreSQL initialization
if [ ! -d ${psql_dir} ]; then
initdb --auth-local=trust --no-locale --encoding=UTF8
fi
pg_ctl start -o "--unix_socket_directories=${psql_dir} --listen_addresses='''"
mysql --socket="${socket}" -u root < ${mysql_file}
psql -d postgres -f ${psql_file}
alias mysql='mysql --socket="${socket}" -u root'
alias psql='psql -d postgres'
'';
}