[mythtv-users] V35 install on Archlinux using cmake is missing python modules used in find_orphans.py

[Bill Meek]

On Wednesday 19 February 2025 06:34:08 PM (-06:00), Scott Theisen wrote:

 > On 2/19/25 16:59, Roland Ernst wrote:
 > >
 > > Jim,
 > > As explained previous in this thread, every python module you try to 
install in a "|EXTERNALLY-MANAGED" environment|
 > > |without using a package manager is causing a PEP 668 error.|
 > > |The flag |-DMYTH_BINDINGS_INSTALL_ROOT=/ is a red herring.
 > > The only way to overcome this is
 > > sudo PIP_BREAK_SYSTEM_PACKAGES=1 cmake --build build-qt5
 > >
 > > You definitely should not use this in a production environment, for 
the following reasons:
 > > - Consistency
 > > - Maintainability
 > > - Security
 > > - Safety
 > >
 > > Roland
 > 
 > Roland,
 > 
 > Is there a way to change how MythTV installs its python bindings so it 
doesn't produce this error or need --break-system-packages in an 
"EXTERNALLY-MANAGED" environment?
 > 
 > Scott

Roland can comment on this.


As root on a archlinux Docker image ('cause I'm testing ansible there),
I did these:

     python -m venv /usr/local/lib/venv

     # I made that path up, we need to agree on a
     # real one so folks don't have to guess.

     source /usr/local/lib/venv/bin/activate # you'll see your PS1 change
     python -m pip install --upgrade pip

     for PACKAGE in \
           lxml \
           mysqlclient \
           requests \
           setuptools \
           pip \
           wheel \
           pycurl \
           oauthlib
     do pip install $PACKAGE
     done

     # The packages can be all on one line, I just wanted to watch errors
     # print when I was getting used to this. The 'normal' packages all had
     # "python-" before their name.

     cmake --preset qt5
     cmake --build build-qt5

     # I put MythTV in the default (think make install) place of 
/usr/local.

Then to test: python -c "import MythTV"

If the build worked, there will be no response. If not,
python will print a ModuleNotFoundError.

HTH
-- 
Bill