AnnotationHub EnsDb object for GRCh37?

[mschubert]

Hi, great effort maintaining the Ensembl releases for Bioconductor!

I was wondering if it makes sense to, in addition to the current Ensembl GRCh38 release, also have AnnotationHub entries for GRCh37? The reason for this is that some clinically relevant datasets are still in the latter coordinates.

Otherwise the latest Ensembl GRCh37 object is just a GRanges object, which is not as nice to work with:

library(AnnotationHub)
ah = AnnotationHub()
query(ah, c("Ensembl", "sapiens", "GRCh37"))
# latest: AH10684 | Homo_sapiens.GRCh37.75.gtf

Maybe it also makes sense to state the assembly version in the AH record title? Related: #155

[jorainer]

The EnsDb databases in AH are linked to the Ensembl release - and, until recently, there was no recent Ensembl release using GRCh37. It's a valid thought - but I'm afraid updating the database creation workflows to support this would be tricky.