Hi Jean,
Thanks again. Here is the output from SlicerPython --launcher-show-set-environment-commands
This was generated using the pre-compiled binary for Linux v 4.9.0 from here: https://download.slicer.org/
I am running Linux Mint 18.3 (based on Ubuntu 16.04).
declare -x "APPLAUNCHER_0_CINNAMON_VERSION=3.6.6";
declare -x "APPLAUNCHER_0_DBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-29uAFN9nm1,guid=fa699cb1fdc1e9c4aa89dbea5ac383d6";
declare -x "APPLAUNCHER_0_DEFAULTS_PATH=/usr/share/gconf/cinnamon.default.path";
declare -x "APPLAUNCHER_0_DESKTOP_SESSION=cinnamon";
declare -x "APPLAUNCHER_0_DISPLAY=:0";
declare -x "APPLAUNCHER_0_GDMSESSION=cinnamon";
declare -x "APPLAUNCHER_0_GDM_LANG=en_CA";
declare -x "APPLAUNCHER_0_GJS_DEBUG_OUTPUT=stderr";
declare -x "APPLAUNCHER_0_GJS_DEBUG_TOPICS=JS ERROR;JS LOG";
declare -x "APPLAUNCHER_0_GNOME_DESKTOP_SESSION_ID=this-is-deprecated";
declare -x "APPLAUNCHER_0_GTK_MODULES=gail:atk-bridge";
declare -x "APPLAUNCHER_0_GTK_OVERLAY_SCROLLING=1";
declare -x "APPLAUNCHER_0_HOME=/home/david";
declare -x "APPLAUNCHER_0_INSIDE_NEMO_PYTHON=";
declare -x "APPLAUNCHER_0_LANG=en_CA.UTF-8";
declare -x "APPLAUNCHER_0_LANGUAGE=en_CA:en";
declare -x "APPLAUNCHER_0_LESSCLOSE=/usr/bin/lesspipe %s %s";
declare -x "APPLAUNCHER_0_LESSOPEN=| /usr/bin/lesspipe %s";
declare -x "APPLAUNCHER_0_LOGNAME=david";
declare -x "APPLAUNCHER_0_LS_COLORS=rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=00:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arc=01;31:*.arj=01;31:*.taz=01;31:*.lha=01;31:*.lz4=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.tzo=01;31:*.t7z=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lrz=01;31:*.lz=01;31:*.lzo=01;31:*.xz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.alz=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.cab=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.webm=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.m4a=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.oga=00;36:*.opus=00;36:*.spx=00;36:*.xspf=00;36:";
declare -x "APPLAUNCHER_0_MANDATORY_PATH=/usr/share/gconf/cinnamon.mandatory.path";
declare -x "APPLAUNCHER_0_OLDPWD=/home/david/Programs/Slicer-4.9.0-2018-04-01-linux-amd64/bin";
declare -x "APPLAUNCHER_0_PATH=/home/david/bin:/home/david/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games";
declare -x "APPLAUNCHER_0_PWD=/home/david/Programs/Slicer-4.9.0-2018-04-01-linux-amd64";
declare -x "APPLAUNCHER_0_QT_ACCESSIBILITY=1";
declare -x "APPLAUNCHER_0_QT_LINUX_ACCESSIBILITY_ALWAYS_ON=1";
declare -x "APPLAUNCHER_0_QT_QPA_PLATFORMTHEME=qgnomeplatform";
declare -x "APPLAUNCHER_0_QT_STYLE_OVERRIDE=gtk";
declare -x "APPLAUNCHER_0_SESSION_MANAGER=local/gunstar1:@/tmp/.ICE-unix/1735,unix/gunstar1:/tmp/.ICE-unix/1735";
declare -x "APPLAUNCHER_0_SHELL=/bin/bash";
declare -x "APPLAUNCHER_0_SHLVL=1";
declare -x "APPLAUNCHER_0_SSH_AGENT_PID=1790";
declare -x "APPLAUNCHER_0_SSH_AUTH_SOCK=/run/user/1000/keyring/ssh";
declare -x "APPLAUNCHER_0_TERM=xterm-256color";
declare -x "APPLAUNCHER_0_USER=david";
declare -x "APPLAUNCHER_0_VTE_VERSION=4205";
declare -x "APPLAUNCHER_0_WINDOWID=104857687";
declare -x "APPLAUNCHER_0_XAUTHORITY=/home/david/.Xauthority";
declare -x "APPLAUNCHER_0_XDG_CONFIG_DIRS=/etc/xdg/xdg-cinnamon:/etc/xdg";
declare -x "APPLAUNCHER_0_XDG_CURRENT_DESKTOP=X-Cinnamon";
declare -x "APPLAUNCHER_0_XDG_DATA_DIRS=/usr/share/cinnamon:/usr/share/gnome:/home/david/.local/share/flatpak/exports/share:/var/lib/flatpak/exports/share:/usr/local/share:/usr/share";
declare -x "APPLAUNCHER_0_XDG_GREETER_DATA_DIR=/var/lib/lightdm-data/david";
declare -x "APPLAUNCHER_0_XDG_RUNTIME_DIR=/run/user/1000";
declare -x "APPLAUNCHER_0_XDG_SEAT=seat0";
declare -x "APPLAUNCHER_0_XDG_SEAT_PATH=/org/freedesktop/DisplayManager/Seat0";
declare -x "APPLAUNCHER_0_XDG_SESSION_DESKTOP=cinnamon";
declare -x "APPLAUNCHER_0_XDG_SESSION_ID=c2";
declare -x "APPLAUNCHER_0_XDG_SESSION_PATH=/org/freedesktop/DisplayManager/Session0";
declare -x "APPLAUNCHER_0_XDG_SESSION_TYPE=x11";
declare -x "APPLAUNCHER_0_XDG_VTNR=7";
declare -x "APPLAUNCHER_0__=bin/SlicerPython";
declare -x "APPLAUNCHER_LEVEL=1";
declare -x "LD_LIBRARY_PATH=/home/david/Programs/Slicer-4.9.0-2018-04-01-linux-amd64/bin/../bin:/home/david/Programs/Slicer-4.9.0-2018-04-01-linux-amd64/bin/../lib/Slicer-4.9:/home/david/Programs/Slicer-4.9.0-2018-04-01-linux-amd64/bin/../lib/Python/lib${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}";
declare -x "PATH=/home/david/Programs/Slicer-4.9.0-2018-04-01-linux-amd64/bin${PATH:+:$PATH}";
declare -x "PYTHONHOME=/home/david/Programs/Slicer-4.9.0-2018-04-01-linux-amd64/bin/../lib/Python";
declare -x "PYTHONNOUSERSITE=1";
declare -x "PYTHONPATH=/home/david/Programs/Slicer-4.9.0-2018-04-01-linux-amd64/bin/../lib/Python/lib/Python/lib/python2.7:/home/david/Programs/Slicer-4.9.0-2018-04-01-linux-amd64/bin/../lib/Python/lib/Python/lib/python2.7/lib-dynload:/home/david/Programs/Slicer-4.9.0-2018-04-01-linux-amd64/bin/../lib/Python/lib/Python/lib/python2.7/site-packages:/home/david/Programs/Slicer-4.9.0-2018-04-01-linux-amd64/bin/../bin/Python${PYTHONPATH:+:$PYTHONPATH}";
declare -x "SSL_CERT_FILE=/home/david/Programs/Slicer-4.9.0-2018-04-01-linux-amd64/bin/../share/Slicer-4.9/Slicer.crt";
I have been able to install many python packages to slicer from the python interpreter using eg pip.main(['install','scipy']). However, having a virtualenv allowed me to compile / install packages from source and import packages (numba, pycuda for instance) that weren’t available or didn’t work from me when installing with pip from the interpreter. Bringing in the packages to slicer with sys.path.append to the virtualenv package directory means that the slicer build is never harmed when things are going badly…
I am not sure if others are having the same limitations I am using pip from the interpreter, or if a better solution exists. Anyhow, hopefully that explains my rationale for wanting to use a virtualenv.
Thanks again for looking at this.
David