[LAD] installing python extensions

[Marc Lavallée]

Le 2022-08-15 à 15 h 21, Fons Adriaensen a écrit :
> One (metric) unit of Eternal Gratitude to both of you.

One unit of "Fons Gratitude" is already a lot, but thanks (infinity / 2) 
times!

> So
>> pip install .
> will install to ~/.local/lib
And when a virtualenv is activated, packages are installed in the ./lib 
sub-directory of the virtualenv directory.

> while
>> sudo pip install .
> will install to /usr/local/lib
>
> I find the destination directory depending on who the user pretends
> to be a bit strange, but it works !
When installing with the root user, the default prefix is /usr/local 
because /usr is usually managed by the system.

But it's possible to install in /root/.local/lib, using:
sudo pip install --user .

Or as the root user, to install to your home directory, try:
sudo su - fons pip install .

The --user option is (now) the default, except when installing as root.

> The only minor problem is that the sudo version leaves two
> directories (build and *.egg-info) that can only be cleaned up
> by root. No problem on systems that allow sudo everything, but
> I may keep the Makefile just to offer 'sudo make clean',
> assuming most system will allow this. Unless there is a
> cleaner solution.

That could be something simple like:

PY = env python3
PIP = env pip3

build:
     $(PIP) wheel .

install:
     $(PIP) install --force-reinstall *.whl

uninstall:
     $(PIP) uninstall zita-audiotools

clean:
     rm -rf build *.egg-info *.whl


Marc
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