From 5835399ef8fd070f03002126f930220412849cd2 Mon Sep 17 00:00:00 2001
From: Dmitry Jemerov <yole@jetbrains.com>
Date: Wed, 8 Aug 2012 13:45:14 +0200
Subject: [PATCH] refresh VFS for site-packages directory after installing or
 uninstalling a package

---
 python/src/com/jetbrains/python/PyNames.java             | 2 ++
 .../jetbrains/python/packaging/PyPackageManagerImpl.java | 9 +++++++++
 python/src/com/jetbrains/python/sdk/PythonSdkType.java   | 3 ++-
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/python/src/com/jetbrains/python/PyNames.java b/python/src/com/jetbrains/python/PyNames.java
index 2192d910f269..0391507ea4db 100644
--- a/python/src/com/jetbrains/python/PyNames.java
+++ b/python/src/com/jetbrains/python/PyNames.java
@@ -14,6 +14,8 @@ import java.util.regex.Pattern;
  */
 @NonNls
 public class PyNames {
+  public static final String SITE_PACKAGES = "site-packages";
+
   private PyNames() {
   }
 
diff --git a/python/src/com/jetbrains/python/packaging/PyPackageManagerImpl.java b/python/src/com/jetbrains/python/packaging/PyPackageManagerImpl.java
index c40aa6852de0..82cea9b8396f 100644
--- a/python/src/com/jetbrains/python/packaging/PyPackageManagerImpl.java
+++ b/python/src/com/jetbrains/python/packaging/PyPackageManagerImpl.java
@@ -27,10 +27,12 @@ import com.intellij.util.ArrayUtil;
 import com.intellij.util.Function;
 import com.intellij.util.SystemProperties;
 import com.intellij.util.net.HttpConfigurable;
+import com.jetbrains.python.PyNames;
 import com.jetbrains.python.PythonHelpersLocator;
 import com.jetbrains.python.psi.PyExpression;
 import com.jetbrains.python.psi.PyListLiteralExpression;
 import com.jetbrains.python.psi.PyStringLiteralExpression;
+import com.jetbrains.python.psi.search.PyProjectScopeBuilder;
 import com.jetbrains.python.remote.PyRemoteInterpreterException;
 import com.jetbrains.python.remote.PythonRemoteInterpreterManager;
 import com.jetbrains.python.remote.PythonRemoteSdkAdditionalData;
@@ -461,6 +463,13 @@ public class PyPackageManagerImpl extends PyPackageManager {
   public void clearCaches() {
     myPackagesCache = null;
     myExceptionCache = null;
+    VirtualFile libDir = PyProjectScopeBuilder.findLibDir(mySdk);
+    if (libDir != null) {
+      VirtualFile sitePackages = libDir.findChild(PyNames.SITE_PACKAGES);
+      if (sitePackages != null) {
+        sitePackages.refresh(true, true);
+      }
+    }
   }
 
   private static <T> List<T> list(T... xs) {
diff --git a/python/src/com/jetbrains/python/sdk/PythonSdkType.java b/python/src/com/jetbrains/python/sdk/PythonSdkType.java
index a5313ecea698..ef348430a4a7 100644
--- a/python/src/com/jetbrains/python/sdk/PythonSdkType.java
+++ b/python/src/com/jetbrains/python/sdk/PythonSdkType.java
@@ -39,6 +39,7 @@ import com.intellij.util.ArrayUtil;
 import com.intellij.util.IncorrectOperationException;
 import com.intellij.util.SmartList;
 import com.jetbrains.python.PyBundle;
+import com.jetbrains.python.PyNames;
 import com.jetbrains.python.PythonFileType;
 import com.jetbrains.python.PythonHelpersLocator;
 import com.jetbrains.python.facet.PythonFacetSettings;
@@ -750,7 +751,7 @@ public class PythonSdkType extends SdkType {
     if (pythonSdk != null) {
       final VirtualFile libDir = PyProjectScopeBuilder.findLibDir(pythonSdk);
       if (libDir != null && VfsUtilCore.isAncestor(libDir, vFile, false)) {
-        final VirtualFile sitePackages = libDir.findChild("site-packages");
+        final VirtualFile sitePackages = libDir.findChild(PyNames.SITE_PACKAGES);
         if (sitePackages != null && VfsUtilCore.isAncestor(sitePackages, vFile, false)) {
           return false;
         }