build-cran-binaries/.superpowers/handoff/task-B1-report.md

Task B1 Report: Create the patch registry with the RcppParallel entry

Status: Completed

All steps completed successfully.

Files Created

1. local/patches/registry.json

   • Contains the curated patch registry array with one entry for RcppParallel
   • Entry specifies platform-specific build-time override: RCPP_PARALLEL_USE_TBB=0 environment variable for alpine and ubuntu-2604
   • No source diff needed; the fix is purely an environment variable override

2. local/patches/README.md

   • Documents the JSON schema with field semantics copied from the design spec
   • Provides instructions on how to add new patch entries
   • Explains that source diffs go in local/patches/<pkg>/<file>.patch and are referenced by the patch field
   • Includes validation instructions using R

Verification

Ran the verification R script:

Rscript -e 'x <- jsonlite::fromJSON("local/patches/registry.json", simplifyVector = FALSE); stopifnot(length(x) == 1L, x[[1]]$package == "RcppParallel"); cat("ok\n")'

Output: ok

The JSON parses correctly, contains exactly one entry, and the package name is "RcppParallel" as expected.

Commit

5bf9b2e feat(patches): add patch registry with RcppParallel TBB workaround

Branch: t3code/patch-packages-before-build

Both files were staged and committed with the message specified in the task brief.