adding qpip option for dependency management

Author: lachlangrose

.gitignore

@@ -129,4 +129,5 @@ dmypy.json
 *.zip
 *.qm
 
-loopstructural/embedded_external_libs/*
+loopstructural/embedded_external_libs/*
+.DS_Store

loopstructural/metadata.txt

@@ -24,3 +24,4 @@ qgisMaximumVersion=3.99
 version=0.1.0
 changelog=
 
+plugin_dependencies=qpip

loopstructural/plugin_main.py

@@ -23,6 +23,18 @@
     __title__,
     __uri_homepage__,
 )
+try:
+    import LoopStructural
+except ImportError:
+    raise ImportError(
+        "LoopStructural is not installed. Please install it using the requirements.txt file in the plugin directory."
+    )
+try:
+    import pyvistaqt
+except ImportError:
+    raise ImportError(
+        "pyvistaqt is not installed. Please install it using the requirements.txt file in the plugin directory."
+    )
 from loopstructural.gui.dlg_settings import PlgOptionsFactory
 from loopstructural.gui.modelling.modelling_widget import ModellingWidget as Modelling
 from loopstructural.toolbelt import PlgLogger

loopstructural/requirements.txt

@@ -0,0 +1,2 @@
+pyvistaqt
+LoopStructural[all]