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###
### Running command:
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###   /Library/Frameworks/R.framework/Resources/bin/R CMD build --keep-empty-dirs --no-resave-data HiCool
###
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* checking for file ‘HiCool/DESCRIPTION’ ... OK
* preparing ‘HiCool’:
* checking DESCRIPTION meta-information ... OK
* installing the package to build vignettes
* creating vignettes ... ERROR
--- re-building ‘HiCool.Rmd’ using rmarkdown
python-build: use openssl from homebrew
python-build: use readline from homebrew
Downloading Python-3.7.12.tar.xz...
-> https://www.python.org/ftp/python/3.7.12/Python-3.7.12.tar.xz
Installing Python-3.7.12...
patching file Doc/library/ctypes.rst
patching file Lib/test/test_unicode.py
patching file Modules/_ctypes/_ctypes.c
patching file Modules/_ctypes/callproc.c
patching file Modules/_ctypes/ctypes.h
patching file setup.py
patching file 'Misc/NEWS.d/next/Core and Builtins/2020-06-30-04-44-29.bpo-41100.PJwA6F.rst'
patching file Modules/_decimal/libmpdec/mpdecimal.h
patching file setup.py
patching file configure
python-build: use readline from homebrew
python-build: use ncurses from homebrew
python-build: use zlib from xcode sdk

BUILD FAILED (OS X 12.7.6 using python-build 2.5.7-9-g70b973f)

Inspect or clean up the working tree at /tmp/python-build.20250522170431.41207
Results logged to /tmp/python-build.20250522170431.41207.log

Last 10 log lines:
  incomplete block on file
/usr/bin/install -c
checking for a thread-safe mkdir -p... ./install-sh -c -d
checking for --with-pydebug... no
checking for --with-assertions... no
checking for --enable-optimizations... yes
checking for --with-lto... yes
checking for llvm-ar... no
configure: error: llvm-ar is required for a --with-lto build with clang but could not be found.
make: *** No targets specified and no makefile found.  Stop.

Quitting from HiCool.Rmd:70-80 [unnamed-chunk-3]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error:
! installation of Python 3.7.12 failed
---
Backtrace:
    ▆
 1. └─HiCool::HiCool(...)
 2.   └─basilisk::basiliskStart(env_HiCool)
 3.     └─basilisk::obtainEnvironmentPath(env)
 4.       └─basilisk::setupBasiliskEnv(...)
 5.         ├─base::suppressMessages(install_python(version))
 6.         │ └─base::withCallingHandlers(...)
 7.         └─reticulate::install_python(version)
 8.           └─reticulate:::stopf("installation of Python %s failed", version)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'HiCool.Rmd' failed with diagnostics:
installation of Python 3.7.12 failed
--- failed re-building ‘HiCool.Rmd’

SUMMARY: processing the following file failed:
  ‘HiCool.Rmd’

Error: Vignette re-building failed.
Execution halted