Add logic to parse pulumi venv (#4994)

CHANGELOG.md

@@ -6,6 +6,9 @@ CHANGELOG
 - Add support for streamInvoke during update
   [#4990](https://github.com/pulumi/pulumi/pull/4990)
 
+- Add logic to parce pulumi venv on github action
+  [#4994](https://github.com/pulumi/pulumi/pull/4994)
+
 ## 2.6.1 (2020-07-09)
 
 - Fix a panic in the display during CLI operations
@@ -392,7 +395,7 @@ CHANGELOG
   [3938](https://github.com/pulumi/pulumi/pull/3938)
 
 - Add support for transformations in the Go SDK.
-  [3978](https://github.com/pulumi/pulumi/pull/3938)  
+  [3978](https://github.com/pulumi/pulumi/pull/3938)
 
 ## 1.11.0 (2020-02-19)
 - Allow oversize protocol buffers for Python SDK.

dist/actions/entrypoint.sh

@@ -79,7 +79,7 @@ fi
 # For Google, we need to authenticate with a service principal for certain authentication operations.
 if [ ! -z "$GOOGLE_CREDENTIALS" ]; then
     export GOOGLE_APPLICATION_CREDENTIALS="$(mktemp).json"
-    # Check if GOOGLE_CREDENTIALS is base64 encoded 
+    # Check if GOOGLE_CREDENTIALS is base64 encoded
     if [[ $GOOGLE_CREDENTIALS =~ ^([A-Za-z0-9+/]{4})*([A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{2}==)?$ ]]; then
         echo "$GOOGLE_CREDENTIALS"|base64 -d > $GOOGLE_APPLICATION_CREDENTIALS
         # unset for other gcloud commands using this variable.
@@ -118,7 +118,16 @@ fi
 
 # If the user is running the Python SDK, we will need to install their requirements as well.
 if [ -e requirements.txt ]; then
-    pip3 install -r requirements.txt
+    # Check if should use venv
+    PULUMI_VENV=$(cat Pulumi.yaml | grep "virtualenv:" | cut -d':' -f2)
+    if [ -z $PULUMI_VENV ]; then
+        python3 -m venv $PULUMI_VENV
+        source $PULUMI_VENV/bin/activate
+        pip3 install -r requirements.txt
+        deactivate
+    else
+        pip3 install -r requirements.txt
+    fi
 fi
 
 # Now just pass along all arguments to the Pulumi CLI, sending the output to a file for