small env fixes on a fresh install (#778)

* libjpegturbo added to flake.nix, removed .envrc (we should use symlinking depending on the env)

* proper venv loading

Former-commit-id: f7c75f6

Author: leshy

.envrc

@@ -2,4 +2,10 @@ if ! has nix_direnv_version || ! nix_direnv_version 3.0.6; then
   source_url "https://raw.githubusercontent.com/nix-community/nix-direnv/3.0.6/direnvrc" "sha256-RYcUJaRMf8oF5LznDrlCXbkOQrywm0HDv1VjYGaJGdM="
 fi
 use flake .
+for venv in venv .venv env; do
+  if [[ -f "$venv/bin/activate" ]]; then
+    source "$venv/bin/activate"
+    break
+  fi
+done
 dotenv_if_exists

.envrc.nix

@@ -1,2 +1,7 @@
-source env/bin/activate
+for venv in venv .venv env; do
+  if [[ -f "$venv/bin/activate" ]]; then
+    source "$venv/bin/activate"
+    break
+  fi
+done
 dotenv_if_exists

.envrc.venv

@@ -43,7 +43,7 @@
           python312Packages.gst-python
 
           ### Open3D & build-time
-          eigen cmake ninja jsoncpp libjpeg libpng
+          eigen cmake ninja jsoncpp libjpeg libjpeg_turbo libpng
 
           ### LCM (Lightweight Communications and Marshalling)
           lcm
@@ -62,8 +62,9 @@
               pkgs.xorg.libXrender pkgs.xorg.libXdamage pkgs.xorg.libXcomposite
               pkgs.xorg.libxcb pkgs.xorg.libXScrnSaver pkgs.xorg.libXxf86vm
               pkgs.udev pkgs.portaudio pkgs.SDL2.dev pkgs.zlib pkgs.glib pkgs.gtk3
-              pkgs.gdk-pixbuf pkgs.gobject-introspection pkgs.lcm pkgs.pcre2
-              pkgs.gst_all_1.gstreamer pkgs.gst_all_1.gst-plugins-base]}:$LD_LIBRARY_PATH"
+              pkgs.gdk-pixbuf pkgs.gobject-introspection pkgs.lcm
+              pkgs.gst_all_1.gstreamer pkgs.gst_all_1.gst-plugins-base
+              pkgs.libjpeg_turbo]}:$LD_LIBRARY_PATH"
 
             export DISPLAY=:0
             export GI_TYPELIB_PATH="${pkgs.gst_all_1.gstreamer}/lib/girepository-1.0:${pkgs.gst_all_1.gst-plugins-base}/lib/girepository-1.0:$GI_TYPELIB_PATH"