Let people connect with just a hostname

store/postgresql/postgresql.go

@@ -4,6 +4,7 @@ package postgresql
 import (
 	"database/sql"
 	"fmt"
+	"strings"
 	"time"
 	"unicode"
 
@@ -192,6 +193,9 @@ func New(opts ...options.Option) (store.Store, error) {
 	if err != nil {
 		return nil, err
 	}
+	if !strings.Contains(dataSourceName, " ") {
+		dataSourceName = fmt.Sprintf("host=%s", dataSourceName)
+	}
 	db, err := sql.Open(driver, dataSourceName)
 	if err != nil {
 		return nil, err