Error installing Rcpp from Posit Package Manager

I'm not sure if this is a Posit Package Manager issue or an renv issue, but when I try to install Rcpp using renv 1.1.4 on MacOS, it is attempting to install Rcpp 1.3 instead of 1.0.14, and then errors with ERROR: a 'NAMESPACE' file is required. While renv::install('Rcpp') errors out, I can get a successful installation with renv::install('Rcpp@1.0.14').

The version numbers for Rcpp on Posit Package Manager look odd, where I see 1.3 as an archived version, but the latest version number appears lower at 1.0.14. I don't see version 1.3 when I look at the CRAN archive here: Index of /src/contrib/Archive/Rcpp. Maybe this is the source of the issue.

> renv::install('Rcpp')
# Downloading packages -------------------------------------------------------
- Downloading Rcpp from CRAN ...                OK [file is up to date]
Successfully downloaded 1 package in 41 milliseconds.

The following package(s) will be installed:
- Rcpp [1.3]
These packages will be installed into "~/Downloads/temp/test-rmysql/renv/library/macos/R-4.4/aarch64-apple-darwin20".

Do you want to proceed? [Y/n]: Y

# Installing packages --------------------------------------------------------
- Installing Rcpp ...                           FAILED
Error: Error installing package 'Rcpp':
================================

* installing *source* package ‘Rcpp’ ...
** using staged installation
checking for C++ compiler default output... a.out
checking whether the C++ compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C++ compiler... yes
checking whether clang++ -arch arm64 -std=gnu++17 accepts -g... yes
rm: conftest.dSYM: is a directory
checking how to run the C++ preprocessor... clang++ -arch arm64 -std=gnu++17 -E
Building MyLib in inst/lib...
clang++ -arch arm64 -std=gnu++17 -falign-functions=64 -Wall -g -O2 -I/opt/R/arm64/include -I/opt/homebrew/include -I../inst/lib  -c -o Adder.o Adder.cpp
clang++ -arch arm64 -std=gnu++17 -falign-functions=64 -Wall -g -O2 -I/opt/R/arm64/include -I/opt/homebrew/include -I../inst/lib  -c -o Multiplier.o Multiplier.cpp
ar r libMyLib.a Adder.o Multiplier.o
ar: creating archive libMyLib.a
ranlib libMyLib.a
Copying source files to inst/doc...
configure: creating ./config.status
config.status: creating src/Makevars
ERROR: a 'NAMESPACE' file is required
* removing ‘/Users/lmendelowitz/Downloads/temp/test-rmysql/renv/staging/1/Rcpp’
install of package 'Rcpp' failed [error code 1]
Traceback (most recent calls last):
12: renv::install("Rcpp")
11: renv_install_impl(records) at install.R#250
10: if (staged)
      renv_install_staged(records)
    else
      renv_install_default(records) at install.R#294
 9: renv_install_default(records) at install.R#314
 8: handler(package, renv_install_package(record)) at install.R#417
 7: handler(package, renv_install_package(record)) at install.R#417
 6: withCallingHandlers(
      renv_install_package_impl(record),
      error = function(e) writef("FAILED")
    ) at install.R#450
 5: withCallingHandlers(
      renv_install_package_impl(record),
      error = function(e) writef("FAILED")
    ) at install.R#450
 4: if (copyable)
      renv_file_copy(path, installpath, overwrite = TRUE)
    else
      r_cmd_install(package, path) at install.R#661
 3: if (!identical(status, 0L))
      r_exec_error(package, output, "install", status) at r.R#234
 2: abort(all) at r.R#52
 1: stop(fallback) at abort.R#44
> sessionInfo()
R version 4.4.3 (2025-02-28)
Platform: aarch64-apple-darwin20
Running under: macOS Sequoia 15.5

Matrix products: default
BLAS:   /Library/Frameworks/R.framework/Versions/4.4-arm64/Resources/lib/libRblas.0.dylib
LAPACK: /Library/Frameworks/R.framework/Versions/4.4-arm64/Resources/lib/libRlapack.dylib;  LAPACK version 3.12.0

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

time zone: America/New_York
tzcode source: internal

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

loaded via a namespace (and not attached):
[1] compiler_4.4.3 tools_4.4.3    renv_1.1.3
> options('repos')
$repos
                                         CRAN
"https://packagemanager.posit.co/cran/latest"
> renv::diagnostics()
Diagnostics Report [renv 1.1.3]
===============================


# Session Info ---------------------------------------------------------------
R version 4.4.3 (2025-02-28)
Platform: aarch64-apple-darwin20
Running under: macOS Sequoia 15.5

Matrix products: default
BLAS:   /Library/Frameworks/R.framework/Versions/4.4-arm64/Resources/lib/libRblas.0.dylib
LAPACK: /Library/Frameworks/R.framework/Versions/4.4-arm64/Resources/lib/libRlapack.dylib;  LAPACK version 3.12.0

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

time zone: America/New_York
tzcode source: internal

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

loaded via a namespace (and not attached):
[1] compiler_4.4.3 tools_4.4.3    renv_1.1.3

# Project --------------------------------------------------------------------
Project path: "~/Downloads/temp/test-rmysql"

# Status ---------------------------------------------------------------------
No issues found -- the project is in a consistent state.

# Packages -------------------------------------------------------------------
           Library Source Lockfile Source Path Dependency
KernSmooth 2.23-26   CRAN     <NA>   <NA>  [2]       <NA>
MASS        7.3-64   CRAN     <NA>   <NA>  [2]       <NA>
Matrix       1.7-2   CRAN     <NA>   <NA>  [2]       <NA>
Rcpp        1.0.14   RSPM     <NA>   <NA>  [1]       <NA>
boot        1.3-31   CRAN     <NA>   <NA>  [2]       <NA>
class       7.3-23   CRAN     <NA>   <NA>  [2]       <NA>
cluster      2.1.8   CRAN     <NA>   <NA>  [2]       <NA>
codetools   0.2-20   CRAN     <NA>   <NA>  [2]       <NA>
foreign     0.8-88   CRAN     <NA>   <NA>  [2]       <NA>
lattice     0.22-6   CRAN     <NA>   <NA>  [2]       <NA>
mgcv         1.9-1   CRAN     <NA>   <NA>  [2]       <NA>
nlme       3.1-167   CRAN     <NA>   <NA>  [2]       <NA>
nnet        7.3-20   CRAN     <NA>   <NA>  [2]       <NA>
renv         1.1.3   RSPM    1.1.3   RSPM  [1]     direct
rpart       4.1.24   CRAN     <NA>   <NA>  [2]       <NA>
spatial     7.3-18   CRAN     <NA>   <NA>  [2]       <NA>
survival     3.8-3   CRAN     <NA>   <NA>  [2]       <NA>
utils         <NA>   <NA>     <NA>   <NA>  [2]   indirect

[1]: /Users/lmendelowitz/Downloads/temp/test-rmysql/renv/library/macos/R-4.4/aarch64-apple-darwin20
[2]: /Users/lmendelowitz/Library/Caches/org.R-project.R/R/renv/sandbox/macos/R-4.4/aarch64-apple-darwin20/f7156815


# ABI ------------------------------------------------------------------------
- No ABI problems were detected in the set of installed packages.

# User Profile ---------------------------------------------------------------
[1] Source  Package Require Version Dev
<0 rows> (or 0-length row.names)

# Settings -------------------------------------------------------------------
List of 13
 $ bioconductor.version     : NULL
 $ external.libraries       : chr(0)
 $ ignored.packages         : chr(0)
 $ package.dependency.fields: chr [1:3] "Imports" "Depends" "LinkingTo"
 $ ppm.enabled              : NULL
 $ ppm.ignored.urls         : chr(0)
 $ r.version                : NULL
 $ snapshot.type            : chr "implicit"
 $ use.cache                : logi TRUE
 $ vcs.ignore.cellar        : logi TRUE
 $ vcs.ignore.library       : logi TRUE
 $ vcs.ignore.local         : logi TRUE
 $ vcs.manage.ignores       : logi TRUE

# Options --------------------------------------------------------------------
List of 9
 $ defaultPackages                     : chr [1:6] "datasets" "utils" "grDevices" "graphics" ...
 $ download.file.method                : NULL
 $ download.file.extra                 : NULL
 $ install.packages.compile.from.source: chr "interactive"
 $ pkgType                             : chr "both"
 $ repos                               : Named chr "https://packagemanager.posit.co/cran/latest"
  ..- attr(*, "names")= chr "CRAN"
 $ renv.consent                        : logi TRUE
 $ renv.project.path                   : chr "/Users/lmendelowitz/Downloads/temp/test-rmysql"
 $ renv.verbose                        : logi TRUE

# Environment Variables ------------------------------------------------------
HOME                        = /Users/lmendelowitz
LANG                        = en_US.UTF-8
MAKE                        = make
R_LIBS                      = <NA>
R_LIBS_SITE                 = /Library/Frameworks/R.framework/Versions/4.4-arm64/Resources/site-library
R_LIBS_USER                 = /Users/lmendelowitz/Downloads/temp/test-rmysql/renv/library/macos/R-4.4/aarch64-apple-darwin20
RENV_DEFAULT_R_ENVIRON      = <NA>
RENV_DEFAULT_R_ENVIRON_USER = <NA>
RENV_DEFAULT_R_LIBS         = <NA>
RENV_DEFAULT_R_LIBS_SITE    = /Library/Frameworks/R.framework/Versions/4.4-arm64/Resources/site-library
RENV_DEFAULT_R_LIBS_USER    = /Users/lmendelowitz/Library/R/arm64/4.4/library
RENV_DEFAULT_R_PROFILE      = <NA>
RENV_DEFAULT_R_PROFILE_USER = <NA>
RENV_PATHS_CELLAR           = /Users/lmendelowitz/renv_local_sources
RENV_PATHS_LOCAL            = /Users/lmendelowitz/renv_local_sources
RENV_PROJECT                = /Users/lmendelowitz/Downloads/temp/test-rmysql

# PATH -----------------------------------------------------------------------
- /Users/lmendelowitz/perl5/bin
- /Users/lmendelowitz/.pyenv/plugins/pyenv-virtualenv/shims
- /Users/lmendelowitz/.pyenv/shims
- /Users/lmendelowitz/.pyenv/bin
- /Users/lmendelowitz/.rbenv/shims
- /usr/local/opt/gnu-sed/libexec/gnubin
- /opt/homebrew/opt/findutils/libexec/gnubin
- /Users/lmendelowitz/.local/bin
- /opt/homebrew/bin
- /opt/homebrew/sbin
- /usr/local/bin
- /usr/bin
- /bin
- /usr/sbin
- /sbin
- /Library/TeX/texbin
- /Users/lmendelowitz/perl5/bin
- /Users/lmendelowitz/.pyenv/plugins/pyenv-virtualenv/shims
- /Users/lmendelowitz/.pyenv/bin
- /Users/lmendelowitz/.rbenv/shims
- /usr/local/opt/gnu-sed/libexec/gnubin
- /opt/homebrew/opt/findutils/libexec/gnubin
- /Users/lmendelowitz/.local/bin
- /opt/homebrew/bin
- /opt/homebrew/sbin
- /opt/homebrew/opt/fzf/bin

# Cache ----------------------------------------------------------------------
There are a total of 626 packages installed in the renv cache.
Cache path: "~/Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20"