MORE: Coverage in Kyrgyz from RFE/RL's Kyrgyz Service.
The lawmakers passed the law in two swift successive readings. The session lasted less than one hour.
The deal is expected to end months of intense political fighting between President Kurmanbek Bakiev and his opponents. Opposition leaders have vowed to send their supporters home as soon as the new fundamental law is adopted.
Thousands of opposition protesters have been demonstrating in Bishkek since November 2 to demand that Bakiev agree on a new constitution that reduces the president's powers, or resign.
