Scripts behind the numbers posted in the conda-forge Zulip thread "Article on Using R and GDAL from conda-forge" (October 2026). They answer two questions about rebuilding r-rcpp with MSVC (via r_clang) on Windows: how many packages use Rcpp Modules and would need rebuilding, and what those packages link and how portable their code is.
Background: on conda-forge Windows, r-rcpp is built with MinGW while libgdal, proj, and geos are built with MSVC. Packages that use Rcpp Modules share C++ objects with Rcpp.dll at run time, so they must match its C++ ABI. That is why r-sf (no modules) builds with r_clang but r-gdalraster and r-terra (modules) crash at namespace load.
Linux or macOS shell with curl, unzip, zstd, GNU tar (for --wildcards), GNU xargs, awk, and Python 3. No Python packages beyond the standard library. The scripts are run with python3 -I because they read downloaded, untrusted d