Install python 3.6.* on Mac M1
Question:
I’m trying to run an old app that requires python < 3.7. I’m currently using python 3.9 and need to use multiple versions of python.
I’ve installed pyenv-virtualenv and pyenv and successfully installed python 3.7.13. However, when I try to install 3.6.*, I get this:
$ pyenv install 3.6.13
python-build: use [email protected] from homebrew
python-build: use readline from homebrew
Downloading Python-3.6.13.tar.xz...
-> https://www.python.org/ftp/python/3.6.13/Python-3.6.13.tar.xz
Installing Python-3.6.13...
python-build: use tcl-tk from homebrew
python-build: use readline from homebrew
python-build: use zlib from xcode sdk
BUILD FAILED (OS X 12.3.1 using python-build 2.2.5-11-gf0f2cdd1)
Inspect or clean up the working tree at /var/folders/r5/xz73mp557w30h289rr6trb800000gp/T/python-build.20220413143259.33773
Results logged to /var/folders/r5/xz73mp557w30h289rr6trb800000gp/T/python-build.20220413143259.33773.log
Last 10 log lines:
checking for --with-cxx-main=<compiler>... no
checking for clang++... no
configure:
By default, distutils will build C++ extension modules with "clang++".
If this is not intended, then set CXX on the configure command line.
checking for the platform triplet based on compiler characteristics... darwin
configure: error: internal configure error for the platform triplet, please file a bug report
make: *** No targets specified and no makefile found. Stop.
Is there a way to solve this? I’ve looked and it seems like Mac M1 doesn’t allow installing 3.6.*
Answers:
Copying from a GitHub issue.
I successfully installed Python 3.6 on an Apple M1 MacBook Pro running Monterey using the following setup. There is probably some things in here that can be removed/refined… but it worked for me!
#Install Rosetta
/usr/sbin/softwareupdate --install-rosetta --agree-to-license
# Install x86_64 brew
arch -x86_64 /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"
# Set up x86_64 homebrew and pyenv and temporarily set aliases
alias brew86="arch -x86_64 /usr/local/bin/brew"
alias pyenv86="arch -x86_64 pyenv"
# Install required packages and flags for building this particular python version through emulation
brew86 install pyenv gcc libffi gettext
export CPPFLAGS="-I$(brew86 --prefix libffi)/include -I$(brew86 --prefix openssl)/include -I$(brew86 --prefix readline)/lib"
export CFLAGS="-I$(brew86 --prefix openssl)/include -I$(brew86 --prefix bzip2)/include -I$(brew86 --prefix readline)/include -I$(xcrun --show-sdk-path)/usr/include -Wno-implicit-function-declaration"
export LDFLAGS="-L$(brew86 --prefix openssl)/lib -L$(brew86 --prefix readline)/lib -L$(brew86 --prefix zlib)/lib -L$(brew86 --prefix bzip2)/lib -L$(brew86 --prefix gettext)/lib -L$(brew86 --prefix libffi)/lib"
# Providing an incorrect openssl version forces a proper openssl version to be downloaded and linked during the build
export [email protected]
# Install Python 3.6
pyenv86 install --patch 3.6.15 <<(curl -sSL https://raw.githubusercontent.com/pyenv/pyenv/master/plugins/python-build/share/python-build/patches/3.6.15/Python-3.6.15/0008-bpo-45405-Prevent-internal-configure-error-when-runn.patch?full_index=1)
Note, the build succeeds but gives the following warning
WARNING: The Python readline extension was not compiled. Missing the GNU readline lib?
running pyenv versions shows that 3.6.15 can be used normally by the system
Adding to the answer of dontirun.
You might get the error as below.
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/Users/kullya/.pyenv/versions/3.6.15/lib/python3.6/ssl.py", line 101, in <module>
import _ssl # if we can't import it, let the error propagate
ModuleNotFoundError: No module named '_ssl'
ERROR: The Python ssl extension was not compiled. Missing the OpenSSL lib?
This is because you have another openssl version already installed that is higher to 1.0, possibly 3. You can update the commands as highlighted below.
#Install Rosetta
/usr/sbin/softwareupdate --install-rosetta --agree-to-license
# Install x86_64 brew
arch -x86_64 /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"
# Set up x86_64 homebrew and pyenv and temporarily set aliases
alias brew86="arch -x86_64 /usr/local/bin/brew"
alias pyenv86="arch -x86_64 pyenv"
# Install required packages and flags for building this particular python version through emulation
brew86 install pyenv gcc libffi gettext
# -------------- change to [email protected] here and others as well ----------+
# ↓
export CPPFLAGS="-I$(brew86 --prefix libffi)/include -I$(brew86 --prefix [email protected])/include -I$(brew86 --prefix readline)/lib"
export CFLAGS="-I$(brew86 --prefix [email protected])/include -I$(brew86 --prefix bzip2)/include -I$(brew86 --prefix readline)/include -I$(xcrun --show-sdk-path)/usr/include -Wno-implicit-function-declaration"
export LDFLAGS="-L$(brew86 --prefix [email protected])/lib -L$(brew86 --prefix readline)/lib -L$(brew86 --prefix zlib)/lib -L$(brew86 --prefix bzip2)/lib -L$(brew86 --prefix gettext)/lib -L$(brew86 --prefix libffi)/lib"
# Providing an incorrect openssl version forces a proper openssl version to be downloaded and linked during the build
export [email protected]
# Install Python 3.6
pyenv86 install --patch 3.6.15 <<(curl -sSL https://raw.githubusercontent.com/pyenv/pyenv/master/plugins/python-build/share/python-build/patches/3.6.15/Python-3.6.15/0008-bpo-45405-Prevent-internal-configure-error-when-runn.patch?full_index=1)
After spending days following each and every tutorial on the Web without success, I found out thanks to a co-worker that a plain brew install pyenv followed by pyenv install 3.6 now works on M1.
$ sw_vers
ProductName: macOS
ProductVersion: 12.6.2
BuildVersion: 21G320
No rosetta, no x86 tricks, just plain ARM, maybe something has changed in the meantime?
Caveat: you could run into problems when using packages that do not yet run on ARM architecture natively, like PyTorch (experimental support only)
I’m trying to run an old app that requires python < 3.7. I’m currently using python 3.9 and need to use multiple versions of python.
I’ve installed pyenv-virtualenv and pyenv and successfully installed python 3.7.13. However, when I try to install 3.6.*, I get this:
$ pyenv install 3.6.13
python-build: use [email protected] from homebrew
python-build: use readline from homebrew
Downloading Python-3.6.13.tar.xz...
-> https://www.python.org/ftp/python/3.6.13/Python-3.6.13.tar.xz
Installing Python-3.6.13...
python-build: use tcl-tk from homebrew
python-build: use readline from homebrew
python-build: use zlib from xcode sdk
BUILD FAILED (OS X 12.3.1 using python-build 2.2.5-11-gf0f2cdd1)
Inspect or clean up the working tree at /var/folders/r5/xz73mp557w30h289rr6trb800000gp/T/python-build.20220413143259.33773
Results logged to /var/folders/r5/xz73mp557w30h289rr6trb800000gp/T/python-build.20220413143259.33773.log
Last 10 log lines:
checking for --with-cxx-main=<compiler>... no
checking for clang++... no
configure:
By default, distutils will build C++ extension modules with "clang++".
If this is not intended, then set CXX on the configure command line.
checking for the platform triplet based on compiler characteristics... darwin
configure: error: internal configure error for the platform triplet, please file a bug report
make: *** No targets specified and no makefile found. Stop.
Is there a way to solve this? I’ve looked and it seems like Mac M1 doesn’t allow installing 3.6.*
Copying from a GitHub issue.
I successfully installed Python 3.6 on an Apple M1 MacBook Pro running Monterey using the following setup. There is probably some things in here that can be removed/refined… but it worked for me!
#Install Rosetta
/usr/sbin/softwareupdate --install-rosetta --agree-to-license
# Install x86_64 brew
arch -x86_64 /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"
# Set up x86_64 homebrew and pyenv and temporarily set aliases
alias brew86="arch -x86_64 /usr/local/bin/brew"
alias pyenv86="arch -x86_64 pyenv"
# Install required packages and flags for building this particular python version through emulation
brew86 install pyenv gcc libffi gettext
export CPPFLAGS="-I$(brew86 --prefix libffi)/include -I$(brew86 --prefix openssl)/include -I$(brew86 --prefix readline)/lib"
export CFLAGS="-I$(brew86 --prefix openssl)/include -I$(brew86 --prefix bzip2)/include -I$(brew86 --prefix readline)/include -I$(xcrun --show-sdk-path)/usr/include -Wno-implicit-function-declaration"
export LDFLAGS="-L$(brew86 --prefix openssl)/lib -L$(brew86 --prefix readline)/lib -L$(brew86 --prefix zlib)/lib -L$(brew86 --prefix bzip2)/lib -L$(brew86 --prefix gettext)/lib -L$(brew86 --prefix libffi)/lib"
# Providing an incorrect openssl version forces a proper openssl version to be downloaded and linked during the build
export [email protected]
# Install Python 3.6
pyenv86 install --patch 3.6.15 <<(curl -sSL https://raw.githubusercontent.com/pyenv/pyenv/master/plugins/python-build/share/python-build/patches/3.6.15/Python-3.6.15/0008-bpo-45405-Prevent-internal-configure-error-when-runn.patch?full_index=1)
Note, the build succeeds but gives the following warning
WARNING: The Python readline extension was not compiled. Missing the GNU readline lib?
running pyenv versions shows that 3.6.15 can be used normally by the system
Adding to the answer of dontirun.
You might get the error as below.
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/Users/kullya/.pyenv/versions/3.6.15/lib/python3.6/ssl.py", line 101, in <module>
import _ssl # if we can't import it, let the error propagate
ModuleNotFoundError: No module named '_ssl'
ERROR: The Python ssl extension was not compiled. Missing the OpenSSL lib?
This is because you have another openssl version already installed that is higher to 1.0, possibly 3. You can update the commands as highlighted below.
#Install Rosetta
/usr/sbin/softwareupdate --install-rosetta --agree-to-license
# Install x86_64 brew
arch -x86_64 /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"
# Set up x86_64 homebrew and pyenv and temporarily set aliases
alias brew86="arch -x86_64 /usr/local/bin/brew"
alias pyenv86="arch -x86_64 pyenv"
# Install required packages and flags for building this particular python version through emulation
brew86 install pyenv gcc libffi gettext
# -------------- change to [email protected] here and others as well ----------+
# ↓
export CPPFLAGS="-I$(brew86 --prefix libffi)/include -I$(brew86 --prefix [email protected])/include -I$(brew86 --prefix readline)/lib"
export CFLAGS="-I$(brew86 --prefix [email protected])/include -I$(brew86 --prefix bzip2)/include -I$(brew86 --prefix readline)/include -I$(xcrun --show-sdk-path)/usr/include -Wno-implicit-function-declaration"
export LDFLAGS="-L$(brew86 --prefix [email protected])/lib -L$(brew86 --prefix readline)/lib -L$(brew86 --prefix zlib)/lib -L$(brew86 --prefix bzip2)/lib -L$(brew86 --prefix gettext)/lib -L$(brew86 --prefix libffi)/lib"
# Providing an incorrect openssl version forces a proper openssl version to be downloaded and linked during the build
export [email protected]
# Install Python 3.6
pyenv86 install --patch 3.6.15 <<(curl -sSL https://raw.githubusercontent.com/pyenv/pyenv/master/plugins/python-build/share/python-build/patches/3.6.15/Python-3.6.15/0008-bpo-45405-Prevent-internal-configure-error-when-runn.patch?full_index=1)
After spending days following each and every tutorial on the Web without success, I found out thanks to a co-worker that a plain brew install pyenv followed by pyenv install 3.6 now works on M1.
$ sw_vers
ProductName: macOS
ProductVersion: 12.6.2
BuildVersion: 21G320
No rosetta, no x86 tricks, just plain ARM, maybe something has changed in the meantime?
Caveat: you could run into problems when using packages that do not yet run on ARM architecture natively, like PyTorch (experimental support only)