Update comments

cran-comments.md

@@ -1,9 +1,32 @@
 ## Test environments
 
-* local macOS install, R 4.3.1
-* ubuntu 20.04 (with GitHub Actions), R 4.3.1
+* local macOS install, R 4.4.2
+* ubuntu 20.04 (with GitHub Actions), R 4.4.2
 * win-builder (devel and release)
 
 ## R CMD check results
 
 0 errors | 0 warnings | 0 note
+
+## Reverse dependencies
+
+With this update, only `sparsevb` failed to install due to the C++14 requirement. 
+This is due to the `RcppEnsmallen` package now requiring C++14. I have 
+contacted the maintainer of `sparsevb` to update their package to work with
+C++14 and provided a patch to do so. However, I have not received a response
+yet. 
+
+> https://gitlab.com/gclara/varpack/-/issues/2
+> https://gitlab.com/gclara/varpack/-/merge_requests/1
+
+Per discussions with Kurt, it is fine to temporarily break `sparsevb` in order
+to allow `mlpack` to be updated to the latest version.
+
+### revdepcheck results
+
+✔ HDJM 0.1.0                             ── E: 0     | W: 0     | N: 0    
+✔ mlpack 4.5.0                           ── E: 0     | W: 1     | N: 1    
+✔ PJFM 0.1.0                             ── E: 0     | W: 0     | N: 0    
+✔ Racmacs 1.2.9                          ── E: 0     | W: 0     | N: 1    
+I sparsevb 0.1.0                         ── E: 0  +1 | W: 0     | N: 0-1  
+✔ VBJM 0.1.0                             ── E: 0     | W: 0     | N: 0