On 6/5/20 1:43 PM, Miro Hrončok wrote:

On 05. 06. 20 11:51, Tomas Orsava wrote:

## PyPI parity

Every Python package in Fedora **SHOULD** also be available on [the Python Package Index](https://pypi.org) (PyPI).

The command `pip install PROJECTNAME` **MUST** install the same package (possibly in a different version), install nothing, or fail with a reasonable error message.

What should I imagine under "reasonable error message"?

One that explains the situation. Not a segfault.
I think it's fine to leave this to the packager.

Maybe I'm missing some context, but I'm lost. Are we proposing to add new functionality to pip that somehow handles this? Or how could the packager influence pip's error message?

Try:

$ pip install fedora

$ pip install fedoraDefaulting to user installation because normal site-packages is not writeableCollecting fedora Downloading fedora-0.tar.gz (2.0 kB)Building wheels for collected packages: fedora Building wheel for fedora (setup.py) ... error ERROR: Command errored out with exit status 1: command: /usr/bin/python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-d5gw3ura/fedora/setup.py'"'"'; __file__='"'"'/tmp/pip-install-d5gw3ura/fedora/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /tmp/pip-wheel-baiub5ca cwd: /tmp/pip-install-d5gw3ura/fedora/ Complete output (72 lines): running bdist_wheel running build running build_py ------------------------------------------------------------------------ # `fedora` on PyPI This dummy project is not installable. You probably want `python-fedora` instead. ## pyproject.toml tool.fedora namespace The [PEP 518](https://www.python.org/dev/peps/pep-0518/#tool-table) declares that a project can use the subtable `tool.$NAME` if `pyproject.toml` if, and only if, they own the entry for `$NAME` in the Cheeseshop/PyPI. That's what this project is for. We own the entry for `fedora`, so we could use `tool.fedora` in . ## python-fedora The Fedora Infra's [python-fedora](https://github.com/fedora-infra/python-fedora) project provides an importable module named `fedora`. This goes against the convention that PyPI distribution names should match the module names. But, python-fedora pre-dates wide use of that convention, and the issue is hard to fix now. Please install `python-fedora` to get the Fedora Infra's package. ### Please: Don't install packages blindly When you see the exception: ``` ModuleNotFoundError: No module named 'foo' ``` … please research the actual requirements instead of going directly for `pip install foo`. The project (distribution) name may differ from the module(s) it provides. ------------------------------------------------------------------------ Traceback (most recent call last): File "<string>", line 1, in <module> File "/tmp/pip-install-d5gw3ura/fedora/setup.py", line 38, in <module> zip_safe=False, File "/home/torsava/.local/lib/python3.7/site-packages/setuptools/__init__.py", line 144, in setup return distutils.core.setup(**attrs) File "/usr/lib64/python3.7/distutils/core.py", line 148, in setup dist.run_commands() File "/usr/lib64/python3.7/distutils/dist.py", line 966, in run_commands self.run_command(cmd) File "/usr/lib64/python3.7/distutils/dist.py", line 985, in run_command cmd_obj.run() File "/home/torsava/.local/lib/python3.7/site-packages/wheel/bdist_wheel.py", line 223, in run self.run_command('build') File "/usr/lib64/python3.7/distutils/cmd.py", line 313, in run_command self.distribution.run_command(command) File "/usr/lib64/python3.7/distutils/dist.py", line 985, in run_command cmd_obj.run() File "/usr/lib64/python3.7/distutils/command/build.py", line 135, in run self.run_command(cmd_name) File "/usr/lib64/python3.7/distutils/cmd.py", line 313, in run_command self.distribution.run_command(command) File "/usr/lib64/python3.7/distutils/dist.py", line 985, in run_command cmd_obj.run() File "/tmp/pip-install-d5gw3ura/fedora/setup.py", line 20, in run '"fedora" is not installable. You probably want python-fedora.' ValueError: "fedora" is not installable. You probably want python-fedora. ---------------------------------------- ERROR: Failed building wheel for fedora Running setup.py clean for fedoraFailed to build fedoraInstalling collected packages: fedora Running setup.py install for fedora ... error ERROR: Command errored out with exit status 1: command: /usr/bin/python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-d5gw3ura/fedora/setup.py'"'"'; __file__='"'"'/tmp/pip-install-d5gw3ura/fedora/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /tmp/pip-record-6ta5hb06/install-record.txt --single-version-externally-managed --user --prefix= --compile --install-headers /home/torsava/.local/include/python3.7m/fedora cwd: /tmp/pip-install-d5gw3ura/fedora/ Complete output (74 lines): running install running build running build_py ------------------------------------------------------------------------ # `fedora` on PyPI This dummy project is not installable. You probably want `python-fedora` instead. ## pyproject.toml tool.fedora namespace The [PEP 518](https://www.python.org/dev/peps/pep-0518/#tool-table) declares that a project can use the subtable `tool.$NAME` if `pyproject.toml` if, and only if, they own the entry for `$NAME` in the Cheeseshop/PyPI. That's what this project is for. We own the entry for `fedora`, so we could use `tool.fedora` in . ## python-fedora The Fedora Infra's [python-fedora](https://github.com/fedora-infra/python-fedora) project provides an importable module named `fedora`. This goes against the convention that PyPI distribution names should match the module names. But, python-fedora pre-dates wide use of that convention, and the issue is hard to fix now. Please install `python-fedora` to get the Fedora Infra's package. ### Please: Don't install packages blindly When you see the exception: ``` ModuleNotFoundError: No module named 'foo' ``` … please research the actual requirements instead of going directly for `pip install foo`. The project (distribution) name may differ from the module(s) it provides. ------------------------------------------------------------------------ Traceback (most recent call last): File "<string>", line 1, in <module> File "/tmp/pip-install-d5gw3ura/fedora/setup.py", line 38, in <module> zip_safe=False, File "/home/torsava/.local/lib/python3.7/site-packages/setuptools/__init__.py", line 144, in setup return distutils.core.setup(**attrs) File "/usr/lib64/python3.7/distutils/core.py", line 148, in setup dist.run_commands() File "/usr/lib64/python3.7/distutils/dist.py", line 966, in run_commands self.run_command(cmd) File "/usr/lib64/python3.7/distutils/dist.py", line 985, in run_command cmd_obj.run() File "/home/torsava/.local/lib/python3.7/site-packages/setuptools/command/install.py", line 61, in run return orig.install.run(self) File "/usr/lib64/python3.7/distutils/command/install.py", line 556, in run self.run_command('build') File "/usr/lib64/python3.7/distutils/cmd.py", line 313, in run_command self.distribution.run_command(command) File "/usr/lib64/python3.7/distutils/dist.py", line 985, in run_command cmd_obj.run() File "/usr/lib64/python3.7/distutils/command/build.py", line 135, in run self.run_command(cmd_name) File "/usr/lib64/python3.7/distutils/cmd.py", line 313, in run_command self.distribution.run_command(command) File "/usr/lib64/python3.7/distutils/dist.py", line 985, in run_command cmd_obj.run() File "/tmp/pip-install-d5gw3ura/fedora/setup.py", line 20, in run '"fedora" is not installable. You probably want python-fedora.' ValueError: "fedora" is not installable. You probably want python-fedora. ----------------------------------------ERROR: Command errored out with exit status 1: /usr/bin/python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-d5gw3ura/fedora/setup.py'"'"'; __file__='"'"'/tmp/pip-install-d5gw3ura/fedora/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /tmp/pip-record-6ta5hb06/install-record.txt --single-version-externally-managed --user --prefix= --compile --install-headers /home/torsava/.local/include/python3.7m/fedora Check the logs for full command output.

I see what you mean.
On the other hand, that's a pretty horrible error message format (posting in it's entirety for others to consider).

Is there no better way to achieve this? For a few packages it's ok, but I would be weary of introducing this to too many packages.

In the proposal there's talk of blocking the name on PyPI. Is this the way the blocking will be achieved?