Installation fails on MacOSX Catalina

[danosipov]

clang throws an error when building with $ pip3 install sasl --user

Collecting sasl
  Using cached sasl-0.3.1.tar.gz (44 kB)
Requirement already satisfied: six in ./Library/Python/3.7/lib/python/site-packages (from sasl) (1.12.0)
Building wheels for collected packages: sasl
  Building wheel for sasl (setup.py) ... error
  ERROR: Command errored out with exit status 1:
   command: /usr/local/opt/python@3.7/bin/python3.7 -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/hb/qbzw6tfn78v65x7f_lf7gmlr0000gn/T/pip-install-efz1sqam/sasl_1792f7557ae44913bb2549d112e3810e/setup.py'"'"'; __file__='"'"'/private/var/folders/hb/qbzw6tfn78v65x7f_lf7gmlr0000gn/T/pip-install-efz1sqam/sasl_1792f7557ae44913bb2549d112e3810e/setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /private/var/folders/hb/qbzw6tfn78v65x7f_lf7gmlr0000gn/T/pip-wheel-rw6ra_jn
       cwd: /private/var/folders/hb/qbzw6tfn78v65x7f_lf7gmlr0000gn/T/pip-install-efz1sqam/sasl_1792f7557ae44913bb2549d112e3810e/
  Complete output (33 lines):
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build/lib.macosx-10.15-x86_64-3.7
  creating build/lib.macosx-10.15-x86_64-3.7/sasl
  copying sasl/__init__.py -> build/lib.macosx-10.15-x86_64-3.7/sasl
  running egg_info
  writing sasl.egg-info/PKG-INFO
  writing dependency_links to sasl.egg-info/dependency_links.txt
  writing requirements to sasl.egg-info/requires.txt
  writing top-level names to sasl.egg-info/top_level.txt
  reading manifest file 'sasl.egg-info/SOURCES.txt'
  reading manifest template 'MANIFEST.in'
  adding license file 'LICENSE.txt'
  writing manifest file 'sasl.egg-info/SOURCES.txt'
  copying sasl/saslwrapper.cpp -> build/lib.macosx-10.15-x86_64-3.7/sasl
  copying sasl/saslwrapper.h -> build/lib.macosx-10.15-x86_64-3.7/sasl
  copying sasl/saslwrapper.pyx -> build/lib.macosx-10.15-x86_64-3.7/sasl
  running build_ext
  building 'sasl.saslwrapper' extension
  creating build/temp.macosx-10.15-x86_64-3.7
  creating build/temp.macosx-10.15-x86_64-3.7/sasl
  /usr/local/bin/gcc-4.9 -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -isystem /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Isasl -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.7/3.7.11/Frameworks/Python.framework/Versions/3.7/include/python3.7m -c sasl/saslwrapper.cpp -o build/temp.macosx-10.15-x86_64-3.7/sasl/saslwrapper.o
  In file included from sasl/saslwrapper.cpp:629:0:
  sasl/saslwrapper.h: In member function 'void saslwrapper::ClientImpl::interact(sasl_interact_t*)':
  sasl/saslwrapper.h:437:11: warning: unused variable 'input' [-Wunused-variable]
       char* input;
             ^
  clang++ -bundle -undefined dynamic_lookup -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk build/temp.macosx-10.15-x86_64-3.7/sasl/saslwrapper.o -L/usr/local/lib -L/usr/local/opt/openssl@1.1/lib -L/usr/local/opt/sqlite/lib -lsasl2 -o build/lib.macosx-10.15-x86_64-3.7/sasl/saslwrapper.cpython-37m-darwin.so
  clang: error: unable to execute command: posix_spawn failed: Argument list too long
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  error: command 'clang++' failed with exit status 1
  ----------------------------------------
  ERROR: Failed building wheel for sasl
  Running setup.py clean for sasl
Failed to build sasl

[danosipov]

oddly enough, $ sudo pip3 install sasl works.