This environment is externally managed (#388)

I just tried installing Naomi on my new Bookworm computer and got
the above error message. It seems that Python now allows the OS
to lock down the main python environment so you can't install
to it using pip or conda or whatnot. You have to use the OS
repositories if you want to install packages on the main python
environment.

This is good, and I'm sure it's the right way to do it. But
although almost all of our packages are installed within the
Naomi virtual environment, we have been using pip to install
virtualenvwrapper itself to the main python environment as a
user package. Since we can't, the install script breaks.

To fix this issue, I had to add the python3-virtualenvwrapper
package to the apt_requirements.txt file, then remove the pip3
install --user virtualenvwrapper line from script.deb.sh.

The location of the virtualenvwrapper.sh script changes from
~/.local/bin/virtualenvwrapper.sh to
/usr/share/virtualenvwrapper/virtualenvwrapper.sh
since it is now being installed by the OS.

The location of virtualenv also changes. In this case, it
worked to simply remove all the VIRTUALENVWRAPPER_VIRTUALENV
lines.

I also made a small change to sphinxplugin.py where I am no
longer checking for the g2p fst model when deciding whether to
clone the CMUSphinx standard language model, since that file
is generated after the model is downloaded. If something
happens between downloading the language model and generating the
g2p model things would get confused.

apt_requirements.txt

@@ -10,6 +10,7 @@ libncurses5-dev
 libssl-dev
 python3-dev
 python3-pip
+python3-virtualenvwrapper
 util-linux
 
 # Plugins

installers/script.deb.sh

@@ -304,18 +304,15 @@ setup_wizard() {
       pulseaudio -D
     fi
 
-    pip3 install --user virtualenv virtualenvwrapper=='4.8.4'
     printf "${B_G}sourcing virtualenvwrapper.sh${B_W}${NL}"
     export WORKON_HOME=$HOME/.virtualenvs
     export VIRTUALENVWRAPPER_PYTHON=/usr/bin/python3
-    export VIRTUALENVWRAPPER_VIRTUALENV=~/.local/bin/virtualenv
-    source ~/.local/bin/virtualenvwrapper.sh
-    export VIRTUALENVWRAPPER_ENV_BIN_DIR=bin
+    source /usr/share/virtualenvwrapper/virtualenvwrapper.sh
     printf "${B_G}checking if Naomi virtualenv exists${B_W}${NL}"
     workon Naomi > /dev/null 2>&1
     if [ $? -ne 0 ]; then
         printf "${B_G}Naomi virtualenv does not exist. Creating.${B_W}${NL}"
-        PATH=$PATH:~/.local/bin mkvirtualenv -p python3 Naomi
+        PATH=$PATH:~/.local/bin mkvirtualenv -p $VIRTUALENVWRAPPER_PYTHON Naomi
     fi
     workon Naomi
     if [ "$(which pip)" = "$HOME/.virtualenvs/Naomi/bin/pip" ]; then
@@ -329,8 +326,7 @@ setup_wizard() {
         printf "${B_W}dependencies, all you have to type is '${B_G}workon Naomi${B_W}'${NL}"
         echo
         printf "${B_W}Otherwise, you will need to enter:${NL}"
-        printf "${B_W}'${B_G}VIRTUALENVWRAPPER_VIRTUALENV=~/.local/bin/virtualenv${B_W}'${NL}"
-        printf "${B_W}'${B_G}source ~/.local/bin/virtualenvwrapper.sh${B_W}'${NL}"
+        printf "${B_W}'${B_G}source /usr/share/virtualenvwrapper/virtualenvwrapper.sh${B_W}'${NL}"
         printf "${B_W}before you will be able activate the Naomi environment with '${B_G}workon Naomi${B_W}'${NL}"
         echo
         printf "${B_W}All of this will be incorporated into the Naomi script, so to simply${NL}"
@@ -365,8 +361,7 @@ setup_wizard() {
             echo '######################################################################' >> ~/.bashrc
             echo "export WORKON_HOME=$HOME/.virtualenvs" >> ~/.bashrc
             echo "export VIRTUALENVWRAPPER_PYTHON=/usr/bin/python3" >> ~/.bashrc
-            echo "export VIRTUALENVWRAPPER_VIRTUALENV=~/.local/bin/virtualenv" >> ~/.bashrc
-            echo "source ~/.local/bin/virtualenvwrapper.sh" >> ~/.bashrc
+            echo "source /usr/share/virtualenvwrapper/virtualenvwrapper.sh" >> ~/.bashrc
         fi
         pip install -r python_requirements.txt
         if [ $? -ne 0 ]; then
@@ -470,8 +465,7 @@ setup_wizard() {
     echo "  fi" >> ~/.config/naomi/Naomi.sh
     echo "  export WORKON_HOME=$HOME/.virtualenvs" >> ~/.config/naomi/Naomi.sh
     echo "  export VIRTUALENVWRAPPER_PYTHON=/usr/bin/python3" >> ~/.config/naomi/Naomi.sh
-    echo "  export VIRTUALENVWRAPPER_VIRTUALENV=~/.local/bin/virtualenv" >> ~/.config/naomi/Naomi.sh
-    echo "  source ~/.local/bin/virtualenvwrapper.sh" >> ~/.config/naomi/Naomi.sh
+    echo "  source /usr/share/virtualenvwrapper/virtualenvwrapper.sh" >> ~/.config/naomi/Naomi.sh
     echo "  workon Naomi" >> ~/.config/naomi/Naomi.sh
     echo "  python $NAOMI_DIR/Naomi.py \"\$@\"" >> ~/.config/naomi/Naomi.sh
     echo "}" >> ~/.config/naomi/Naomi.sh

plugins/stt/pocketsphinx-stt/sphinxplugin.py

@@ -89,8 +89,6 @@ def check_pocketsphinx_model(directory):
         FilesExist = False
     if (not os.path.isfile(os.path.join(directory, "variances"))):
         FilesExist = False
-    if (not os.path.isfile(os.path.join(directory, "model", "train.fst"))):
-        FilesExist = False
     return FilesExist