Jan Maksymiuk translated the novel from New Norwegian (landsmål, nynorsk) into Podlachian (Svoja) in 2005.
It has not been clearly confirmed by Jan anywhere but the purported reason for the translation may be his discovery of some parallels between the fortunes of New Norwegian and Podlachian as „rural” languages.
You can find the translation of Vårnatt — Vesnianaja nôč — as both browseable pages and a downloadable PDF file in the Belles-Lettres chapter of the site, or you can follow this direct link.