JAKARTA, July 12 (Reuters) - Indonesia, working on behalf of southeast Asian nations, has little to show so far for its intense behind-the-scenes efforts to bridge gaps between factions in Myanmar's conflict, diplomatic sources say.

Myanmar has been racked by violence since 2021, when the military seized power from a largely elected government and unleashed a deadly crackdown on opponents.

Amid scepticism over the bloc's credibility on the issue, Indonesia, as this year's chair of the Association of Southeast Asian Nations (ASEAN), has conducted a whirlwind of more than 100 contacts with factions with the aim of paving the way for at least informal talks.

But the junta, an opposition "shadow government" and rebel militias all refuse to compromise on their respective conditions to start even informal talks, said three sources, including two diplomats, familiar with the matter.

The sources declined to be identified due to the sensitivity of the issue.

Myanmar's shadow National Unity Government (NUG) has said it will join talks only if the junta agrees to scrap the 2008 constitution, which provides the legal basis for a military role in government, and to release political prisoners.

Any talks with the junta would "have to agree in principle that the people of Myanmar do not want a military dictatorship anymore", said Sasa, who conducts international affairs for the NUG and goes by one name.

The junta, for its part, has made acceptance of the 2008 constitution a precondition of meeting with the opposition, the sources said. The junta did not respond to requests for comment.