I am on MacOS using RStudio and R4.4.2 but the issue seems to relate to the lack of BiocManager finding the package.

> BiocManager::install("pachterlab/sleuth") 'getOption("repos")' replaces Bioconductor standard repositories, see 'help("repositories", package = "BiocManager")' for details. Replacement repositories: CRAN: https://cran.rstudio.com/ Bioconductor version 3.20 (BiocManager 1.30.25), R 4.4.2 (2024-10-31) Installing github package(s) 'pachterlab/sleuth' Using GitHub PAT from the git credential store. Error: Failed to install 'unknown package' from GitHub: cannot open URL 'https://api.github.com/repos/pachterlab/sleuth/contents/DESCRIPTION?ref=HEAD'