Update glmnet to use latest source from R package

[JackDunnNZ]

Ref JuliaStats/GLMNet.jl#46

The current glmnet build uses an older version of glmnet from 2014 that was copied into the GLMNet repo a long time ago, and this changes to build from the current R package source instead.

There are a couple of issues where I need some help:

• the original glmnet build was given version 5, because the file was named glmnet5.f90 with no version info in the the file other than a datestamp. I figured it would make sense to sync the version to the tagged version of the R package, but the problem is that the most recent tag is currently v4.0.2, so there is the chance for a v5 conflict in future. I'd appreciate input on how to best solve this.
• there is a warning about no license file being present. The license is GPLv2, but many R packages only specify the choice of license in their DESCRIPTION file rather than including a separate and complete license file. What is the best way to resolve this?

[giordano]

Why? 😅

[JackDunnNZ]

Lol I didn't see this, I think it must have been added when I pasted the old script into the wizard 😅

Can remove if you like

[giordano]

the original glmnet build was given version 5, because the file was named glmnet5.f90 with no version info in the the file other than a datestamp. I figured it would make sense to sync the version to the tagged version of the R package, but the problem is that the most recent tag is currently v4.0.2, so there is the chance for a v5 conflict in future. I'd appreciate input on how to best solve this.

In the future we're going to separate the version number of the JLL package from that of the upstream project, so you'll be able to generate glmnet_jll v6 corresponding to the upstream version 5, in case that's necessary. However we still need to iron out the details of this, for the time being we stick to following the upstream version.

[JackDunnNZ]

Thanks for the help @giordano!