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milktea02
milktea02

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struggle tweets to install python 3.10.2 with pyenv on Ubuntu 20.04 (WSL)

#python #pyenv #ubuntu #wsl

If you want to watch me struggle, continue below. Otherwise just go here: https://computingforgeeks.com/how-to-install-python-on-ubuntu-linux-system/

I just bought a new laptop and figured, setting up my WSL Ubuntu environment should be pretty straightforward right? All I need to do is git clone a few repos and setup my $PATH.

I was very wrong.

I'm not an expert in setting up Linux environments and it just so happened that Stackoverflow was going through some things (https://twitter.com/StackStatus/status/1502788125285879817).

Anyway, some of the things I needed to get my pyenv v2.2.4 to even install python v3.10.2

At this point I've already apt install the following:

 gcc make build-essential
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but I'm still getting the following error:

 $ pyenv install 3.10.2 Downloading Python-3.10.2.tar.xz... -> https://www.python.org/ftp/python/3.10.2/Python-3.10.2.tar.xz Installing Python-3.10.2... BUILD FAILED (Ubuntu 20.04 using python-build 2.2.4) Inspect or clean up the working tree at /tmp/python-build.20220312160907.27360 Results logged to /tmp/python-build.20220312160907.27360.log Last 10 log lines: File "/tmp/python-build.20220312160907.27360/Python-3.10.2/Lib/ensurepip/__init__.py", line 277, in _main return _bootstrap( File "/tmp/python-build.20220312160907.27360/Python-3.10.2/Lib/ensurepip/__init__.py", line 193, in _bootstrap return _run_pip([*args, *_PACKAGE_NAMES], additional_paths) File "/tmp/python-build.20220312160907.27360/Python-3.10.2/Lib/ensurepip/__init__.py", line 93, in _run_pip return subprocess.run([sys.executable, '-W', 'ignore::DeprecationWarning', File "/tmp/python-build.20220312160907.27360/Python-3.10.2/Lib/subprocess.py", line 524, in run raise CalledProcessError(retcode, process.args, subprocess.CalledProcessError: Command '['/tmp/python-build.20220312160907.27360/Python-3.10.2/python', '-W', 'ignore::DeprecationWarning', '-c', '\nimport runpy\nimport sys\nsys.path = [\'/tmp/tmpbfu6lr32/setuptools-58.1.0-py3-none-any.whl\', \'/tmp/tmpbfu6lr32/pip-21.2.4-py3-none-any.whl\'] + sys.path\nsys.argv[1:] = [\'install\', \'--no-cache-dir\', \'--no-index\', \'--find-links\', \'/tmp/tmpbfu6lr32\', \'--root\', \'/\', \'--upgrade\', \'setuptools\', \'pip\']\nrunpy.run_module("pip", run_name="__main__", alter_sys=True)\n']' returned non-zero exit status 1. make: *** [Makefile:1280: install] Error 1
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Looking at the logs provided, indeed I am missing a lott of tools:

 $ cat /tmp/python-build.20220312160907.27360.log | grep -e "hecking.*no$" | wc -l 197
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I'm just looking blindly through and find the following:

 ModuleNotFoundError: No module named 'zlib' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "<frozen zipimport>", line 618, in _get_data File "<frozen zipimport>", line 573, in _get_decompress_func zipimport.ZipImportError: can't decompress data; zlib not available
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 The necessary bits to build these optional modules were not found: _bz2 _curses _curses_panel _dbm _gdbm _hashlib _lzma _sqlite3 _ssl _tkinter _uuid readline zlib To find the necessary bits, look in setup.py in detect_modules() for the module's name. The following modules found by detect_modules() in setup.py, have been built by the Makefile instead, as configured by the Setup files: _abc pwd time Failed to build these modules: _ctypes Could not build the ssl module! Python requires a OpenSSL 1.1.1 or newer
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okay, what is zlib? https://packages.ubuntu.com/source/focal/zlib

Not too helpful, as there are a bunch of different packages here that I can install, but which one?

Image screen snippet of the ubuntu packages search for zlib which shows several zlib packages

The internet seems to say zlib1g-dev.

So I suppose I'll need to get the dev versions of all these C library packages:

 zlib1g-dev libbz2-dev libsqlite3-dev libgdbm-dev libssl-dev libncurses5-dev libreadline-dev liblzma-dev
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Anyway, since I know nothing and am just meandering through this on my own even though I can copy paste the list of dependencies someone else has posted on the internet, I decide to only install zlib1g-dev since the other ones are required for optional modules (which I'll probably need later and regret not installing now).

Okay so what happens when I try to pyenv install 3.10.2 now?

 $ pyenv install 3.10.2 Downloading Python-3.10.2.tar.xz... -> https://www.python.org/ftp/python/3.10.2/Python-3.10.2.tar.xz Installing Python-3.10.2... WARNING: The Python bz2 extension was not compiled. Missing the bzip2 lib? WARNING: The Python readline extension was not compiled. Missing the GNU readline lib? ERROR: The Python ssl extension was not compiled. Missing the OpenSSL lib? Please consult to the Wiki page to fix the problem. https://github.com/pyenv/pyenv/wiki/Common-build-problems BUILD FAILED (Ubuntu 20.04 using python-build 2.2.4) Inspect or clean up the working tree at /tmp/python-build.20220312165507.7502 Results logged to /tmp/python-build.20220312165507.7502.log Last 10 log lines: Installing collected packages: setuptools, pip WARNING: Value for scheme.headers does not match. Please report this to <https://github.com/pypa/pip/issues/10151> distutils: /home/banana/.pyenv/versions/3.10.2/include/python3.10/setuptools sysconfig: /tmp/python-build.20220312165507.7502/Python-3.10.2/Include/setuptools WARNING: Value for scheme.headers does not match. Please report this to <https://github.com/pypa/pip/issues/10151> distutils: /home/banana/.pyenv/versions/3.10.2/include/python3.10/pip sysconfig: /tmp/python-build.20220312165507.7502/Python-3.10.2/Include/pip WARNING: The scripts pip3 and pip3.10 are installed in '/home/banana/.pyenv/versions/3.10.2/bin' which is not on PATH. Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location. Successfully installed pip-21.2.4 setuptools-58.1.0
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Okay that seems like a more positive step. The only error that I see now is that ssl extensions was not compiled. Seems important. Let's install libssl-dev

Okay AGAIN:

 Downloading Python-3.10.2.tar.xz... -> https://www.python.org/ftp/python/3.10.2/Python-3.10.2.tar.xz Installing Python-3.10.2... WARNING: The Python bz2 extension was not compiled. Missing the bzip2 lib? WARNING: The Python readline extension was not compiled. Missing the GNU readline lib? WARNING: The Python sqlite3 extension was not compiled. Missing the SQLite3 lib? Installed Python-3.10.2 to /home/banana/.pyenv/versions/3.10.2
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YAY!

 $ pyenv versions * system (set by /home/banana/.pyenv/version) 3.10.2
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We'll ignore all the warnings... until next time.

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