I think they still made a deal with some "conservative" parties per Reuters, just not the "far-right".
Sweden's parties reach deal to keep far-Right Sweden Democrats from influence
Richard Orange, malmo
11 JANUARY 2019 • 3:59PM
Sweden’s ruling coalition has struck a deal with two minority parties to maintain power and ensure that the far-Right Sweden Democrats cannot gain political influence after 124 days of deadlock.
Annie Lööf, leader of the Centre Party, said on that her party had reached "a breakthrough" in talks with the Social Democrat, Green and Liberal Parties.
Read more at: https://www.telegraph.co.uk/news/2019/01/11/swedens-parties-reach-deal-keep-far-right-sweden-democrats-influence/