Please, tell the list the new building process results. I cannot follow it without errors and strange errors.
Marcelo,
One question I had asked a while ago has been anwered: one needs to install the python web framework, flask, and SQLAlchemy even if the end use is from the command line (the runtime build). Interesting.
I upgraded the SlackBuilds.org packages for virtualenv, virtualenv-clone, and virtualenvwrapper and sourced /usr/bin/virtualenvwrapper.sh (Slackware puts executables in /usr/bin/ rather than /usr/local/bin/ and postgres is installed in /usr/lib/postgresql/9.6/bin -- at least for the currently installed version -- rather than /usr/local/pgsql/bin; the postgres data directory is in /var/lib/pgsql/data/).
Next, I created a pgAdmin4 virtual environment as directed in step 3. Within that environment I ran pip3 as in step 4, but since installation of many of the tools requires root privileges I ran [root@salmo ~]# pip install -r /opt/pgadmin4-1.3/requirements.txt. This
Please try pip3 (on some system, for python 3, it uses pip3).
failed because it was looking for python-2.x rather than 3.x and tried installing a very old version of SQLAlchemy-1.0.8 where the current version is something like 1.0.14.