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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 StatescopeR
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* checking for file ‘StatescopeR/DESCRIPTION’ ... OK
* preparing ‘StatescopeR’:
* checking DESCRIPTION meta-information ... OK
* installing the package (it is needed to build vignettes)
* creating vignettes ... ERROR
--- re-building ‘StatescopeR.Rmd’ using rmarkdown
python-build: use openssl from homebrew
python-build: use readline from homebrew
Downloading Python-3.7.17.tar.xz...
-> https://www.python.org/ftp/python/3.7.17/Python-3.7.17.tar.xz
Installing Python-3.7.17...
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 setup.py
python-build: use tcl-tk from homebrew
python-build: use readline from homebrew
python-build: use zlib from xcode sdk

BUILD FAILED (OS X 13.7.8 using python-build 2.6.20-3-g82f4de5)

Inspect or clean up the working tree at /var/folders/r0/l4fjk6cj5xj0j3brt4bplpl40000gt/T/python-build.20260123175706.3533
Results logged to /var/folders/r0/l4fjk6cj5xj0j3brt4bplpl40000gt/T/python-build.20260123175706.3533.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 StatescopeR.Rmd:124-153 [Prepare StatescopeR input]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error:
! installation of Python 3.7 failed
---
Backtrace:
    ▆
 1. └─StatescopeR::select_genes(scRNAseq, 30L, 50L, labels = scRNAseq$`cell type`)
 2.   └─basilisk::basiliskStart(autogenes, testload = c("autogenes"))
 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 'StatescopeR.Rmd' failed with diagnostics:
installation of Python 3.7 failed
--- failed re-building ‘StatescopeR.Rmd’

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

Error: Vignette re-building failed.
Execution halted