renv restore failing with Matrix

Hi! renv::restore() is no longer working in any of our projects because Matrix gets in the way. I can install Matrix when running renv::install('Matrix@<version>') or renv::restore(packages='Matrix'), but running renv::restore() and I get inexplicably:

Is it related to this?

Matrix is available under R 4.5?

I cant seem to get past this.

Environment:

# Session Info ---------------------------------------------------------------
R version 4.1.2 (2021-11-01)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 22.04.3 LTS

Matrix products: default
BLAS:   /usr/lib/x86_64-linux-gnu/blas/libblas.so.3.10.0
LAPACK: /usr/lib/x86_64-linux-gnu/lapack/liblapack.so.3.10.0

locale:
 [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C              
 [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8    
 [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8   
 [7] LC_PAPER=en_US.UTF-8       LC_NAME=C                 
 [9] LC_ADDRESS=C               LC_TELEPHONE=C            
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       

attached base packages:
[1] stats     graphics  grDevices datasets  utils     methods   base     

loaded via a namespace (and not attached):
[1] compiler_4.1.2 tools_4.1.2    renv_1.0.7    

repos used:

c(CRAN_MC = "https://jfrog.ourcompanyrepo.io/artifactory/cran", RSPM = "https://packagemanager.posit.co/all/__linux__/jammy/latest", 
CRAN = "https://cran.r-project.org")

I've tried reordering every combination, i know this affects installs for our internal repo with artifactory.

Debugging through renv gets me to renv_available_packages_latest and the records are NULL:

I've tried available.packages() and Matrix is nowhere to be found.

I've tried libcurl, curl as download method, download.headers options.

Not sure how to attack this. Any help appreciated!

Reproduce the failure with R 4.1.2, renv 1.0.7, and the repositories listed in the issue, then trace renv_available_packages_latest and compare it with available.packages(). Determine why Matrix is absent during renv::restore() while direct installation succeeds. Done means the cause is identified and restore can resolve Matrix from the configured repositories.