The Nets have a truce.

Now they have to build a team.

After they spent three years essentially acquiescing to Kevin Durant and Kyrie Irving at every turn, the Nets finally stood their ground against Irving’s contract demands and Durant’s ensuing trade requests.

Both talks got contentious behind closed doors. Durant even asked for coach Steve Nash and general manager Sean Marks to be fired. But Nets owner Joe Tsai held firm.

And Durant folded.

In the end, the Nets realized they not only had leverage over Durant due to his four-year contract, but also they had the patient resolve to use it. They waited out a slow trade market for Durant, waited out their star’s love of the game, and waited until he rescinded his trade request at a Monday meeting in Los Angeles.

The Nets didn’t so much slow-play the Durant trade market as slow-play Durant himself, and his trade request.

The fact Marks and Nash, the men he’d tried to get fired, were at that face-to-face meeting was important. Feelings were aired, and both sides (Durant and business partner Rich Kleiman on one; Marks, Nash, Tsai and his wife, Clara Wu Tsai, on the other) are believed to have left that California caucus in positive spirits and looking forward, not back.

“Onward now,” a high-ranking Nets source told The Post.

Of course, the idea is to get two sides turned into one side.

There is a theory that the Nets never truly intended to move Durant, and his camp tried to incentivize them by making an outrageous demand he never really expected to be met. Still, ploy or no, asking for a man’s job is personal.

And just because bridges weren’t burned doesn’t mean they don’t need some repairing and patchwork.

They say time heals all wounds. But in the NBA, does winning solve all beefs?

But there were Nash and Marks flying to Los Angeles to sit in a room across from Durant. Marks flew back across the country Tuesday — his birthday, no less — with Durant recommitted. And Nash left in arguably a stronger position than he had been in before.

Tsai never flinched before Durant. He gave Marks the autonomy to re-take the Nets’ culture, and he gave Nash his backing. If a two-time Finals MVP couldn’t get Nash fired, the coach should only be emboldened.

After Miami started 9-8 in LeBron James’ first season, he wanted Erik Spoelstra fired, and Heat co-owner Raanan Katz admitted as much. But Pat Riley told James in no uncertain terms it would not happen, and Spoelstra went on to reach four NBA Finals, with two titles, from 2011-14.

Now, the Nets have a lot to prove. Nash isn’t Spoelstra. Irving has to show he’s available to get the kind of $200 million-plus deal Bradley Beal and Zach LaVine did. Ben Simmons has to show he’s physically and mentally capable of playing. And Durant has to prove he’s committed and won’t change his mind again if the Nets stumble early.

Irving’s refusal to get vaccinated left him sidelined at the start of last season and undercut their entire campaign. They’re painfully aware of the value of being on the same page from the beginning of training camp next month if they intend to vie for a title.

Simmons, Joe Harris and Seth Curry are all coming off surgery, and newcomers T.J. Warren and Edmond Sumner both missed last season entirely. And the Nets will play 10 road games in November, including Simmons’ potential first tilt back in Philadelphia. But if they run that gauntlet, it can go a long way.

For the Nets, winning will be the best salve — maybe the only one.

Right now they have a truce. Now they have to build a team.

And a winner.

The Nets have six open roster spots (two standard contracts, three Exhibit 10s and a two-way) and are eyeing front-court players. There is mutual interest with 32-year-old veteran Markieff Morris, a source told The Post.

HoopsHype reported the Nets are also looking at Tristan Thompson.