fix concurrently running fastapi and python lg platform

Author: maxkorp

typescript-sdk/apps/dojo/scripts/prep-dojo-everything.js

@@ -62,6 +62,9 @@ const langgraphFastapi = {
   command: 'poetry install',
   name: 'LG FastAPI',
   cwd: path.join(integrationsRoot, 'langgraph/examples/python'),
+  env: {
+    POETRY_VIRTUALENVS_IN_PROJECT: "false"
+  }
 }
 
 // Langgraph (Platorm {typescript})

typescript-sdk/apps/dojo/scripts/run-dojo-everything.js

@@ -64,7 +64,10 @@ const langgraphFastapi = {
   command: 'poetry run dev',
   name: 'LG FastAPI',
   cwd: path.join(integrationsRoot, 'langgraph/examples/python'),
-  env: {PORT: 8004},
+  env: {
+    PORT: 8004,
+    POETRY_VIRTUALENVS_IN_PROJECT: "false"
+  },
 }
 
 // Langgraph (Platform {python})

typescript-sdk/integrations/langgraph/examples/python/README.md

@@ -17,3 +17,17 @@ poetry install
 poetry run dev
 ```
 
+Note that when running them both concurrently, poetry and the langgraph-cli will step on eachothers toes and install/uninstall eachothers dependencies.
+You can fix this by running the poetry commands with virtualenvs.in-project set to false. You can set this permanently for the project using:
+`poetry config virtualenvs.create false --local`, globally using `poetry config virtualenvs.create false`, or temporarily using an environment variable:
+
+```
+export POETRY_VIRTUALENVS_IN_PROJECT=false
+poetry install
+poetry run dev
+```
+or
+```
+POETRY_VIRTUALENVS_IN_PROJECT=false poetry install
+POETRY_VIRTUALENVS_IN_PROJECT=false poetry run dev
+```