When an update to a package happens, the old version is supposed to be in e.g. https://bioconductor.org/packages/3.14/bioc/src/contrib/Archive/ (see Bioconductor Package Archives )
That URL workes for 3.15: https://bioconductor.org/packages/3.15/bioc/src/contrib/Archive/ but 404s for older versions (I tested 3.6, 3.8, 3.14).
I suppose there was a data migration that neglected them?.
Can we get them back in the name of reproducibility?