diff --git a/plugins/python-build/bin/python-build b/plugins/python-build/bin/python-build
index aae178ed..4b4bad6e 100755
--- a/plugins/python-build/bin/python-build
+++ b/plugins/python-build/bin/python-build
@@ -445,18 +445,6 @@ build_package() {
   for command in $commands; do
     "build_package_${command}" "$package_name"
   done
-
-  if [ ! -f "$PYTHON_BIN" ]; then
-    for python in "${PREFIX_PATH}"/bin/python*; do
-      if basename "$python" | grep '^python[0-9][0-9]*\.[0-9][0-9]*$' >/dev/null; then
-        {
-          cd ${PREFIX_PATH}/bin
-          ln -fs "$(basename $python)" python
-        }
-        break
-      fi
-    done
-  fi
 }
 
 package_option() {
@@ -492,6 +480,19 @@ build_package_standard() {
     "$MAKE" $MAKE_OPTS ${!PACKAGE_MAKE_OPTS} "${!PACKAGE_MAKE_OPTS_ARRAY}"
     "$MAKE" install
   } >&4 2>&1
+
+  # Create `python` executable if missing
+  if [[ "${package_name}" == "Python"* ]] || [[ "${package_name}" == "stackless"* ]]; then
+    if [ ! -f "$PYTHON_BIN" ]; then
+      local python
+      for python in "${PREFIX_PATH}/bin/python"*; do
+        if expr "$(basename "$python")" : '^python[0-9][0-9]*\.[0-9][0-9]*$' 2>&1 >/dev/null; then
+          ( cd "${PREFIX_PATH}/bin" && ln -fs "$(basename "$python")" python )
+          break
+        fi
+      done
+    fi
+  fi
 }
 
 build_package_autoconf() {
@@ -643,12 +644,79 @@ build_package_mac_openssl() {
   security find-certificate -a -p /System/Library/Keychains/SystemRootCertificates.keychain >> "$pem_file"
 }
 
-# Post-install check that the openssl extension was built.
-build_package_verify_openssl() {
+build_package_verify_py25() {
+  build_package_verify_readline "$@"
+  build_package_verify_sqlite3 "$@"
+  build_package_verify_zlib "$@"
+  build_package_verify_bz2 "$@"
+}
+
+build_package_verify_py26() {
+  build_package_verify_readline "$@"
+  build_package_verify_ssl "$@"
+  build_package_verify_sqlite3 "$@"
+  build_package_verify_zlib "$@"
+  build_package_verify_bz2 "$@"
+}
+
+build_package_verify_py27() {
+  build_package_verify_readline "$@"
+  build_package_verify_ssl "$@"
+  build_package_verify_sqlite3 "$@"
+  build_package_verify_zlib "$@"
+  build_package_verify_bz2 "$@"
+}
+
+build_package_verify_py3() {
+  build_package_verify_readline "$@"
+  build_package_verify_ssl "$@"
+  build_package_verify_sqlite3 "$@"
+  build_package_verify_zlib "$@"
+  build_package_verify_bz2 "$@"
+}
+
+# Post-install check that the readline extension was built.
+build_package_verify_readline() {
+  "$PYTHON_BIN" -c 'try:
+    import readline
+except ImportError:
+    raise(ImportError("The Python readline extension was not compiled. Missing the GNU readline lib?"))
+  ' >&4 2>&1
+}
+
+# Post-install check that the ssl extension was built.
+build_package_verify_ssl() {
   "$PYTHON_BIN" -c 'try:
     import ssl
 except ImportError:
-    raise(ImportError("The Python openssl extension was not compiled. Missing the OpenSSL lib?"))
+    raise(ImportError("The Python ssl extension was not compiled. Missing the OpenSSL lib?"))
+  ' >&4 2>&1
+}
+
+# Post-install check that the sqlite3 extension was built.
+build_package_verify_sqlite3() {
+  "$PYTHON_BIN" -c 'try:
+    import sqlite3
+except ImportError:
+    raise(ImportError("The Python ssl extension was not compiled. Missing the SQLite3 lib?"))
+  ' >&4 2>&1
+}
+
+# Post-install check that the zlib extension was built.
+build_package_verify_zlib() {
+  "$PYTHON_BIN" -c 'try:
+    import zlib
+except ImportError:
+    raise(ImportError("The Python ssl extension was not compiled. Missing the zlib?"))
+  ' >&4 2>&1
+}
+
+# Post-install check that the bz2 extension was built.
+build_package_verify_bz2() {
+  "$PYTHON_BIN" -c 'try:
+    import bz2
+except ImportError:
+    raise(ImportError("The Python bz2 extension was not compiled. Missing the bzip2 lib?"))
   ' >&4 2>&1
 }
 
diff --git a/plugins/python-build/share/python-build/2.5 b/plugins/python-build/share/python-build/2.5
index 130846aa..1636f73a 100644
--- a/plugins/python-build/share/python-build/2.5
+++ b/plugins/python-build/share/python-build/2.5
@@ -1,3 +1,3 @@
-install_package "Python-2.5" "http://www.python.org/ftp/python/2.5/Python-2.5.tgz#bc1b74f90a472a6c0a85481aaeb43f95"
+install_package "Python-2.5" "http://www.python.org/ftp/python/2.5/Python-2.5.tgz#bc1b74f90a472a6c0a85481aaeb43f95" standard verify_py25
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/2.5.1 b/plugins/python-build/share/python-build/2.5.1
index 3f862b8b..9c064e3b 100644
--- a/plugins/python-build/share/python-build/2.5.1
+++ b/plugins/python-build/share/python-build/2.5.1
@@ -1,3 +1,3 @@
-install_package "Python-2.5.1" "http://www.python.org/ftp/python/2.5.1/Python-2.5.1.tgz#cca695828df8adc3e69b637af07522e1"
+install_package "Python-2.5.1" "http://www.python.org/ftp/python/2.5.1/Python-2.5.1.tgz#cca695828df8adc3e69b637af07522e1" standard verify_py25
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/2.5.2 b/plugins/python-build/share/python-build/2.5.2
index ac18ba3c..aa04b67a 100644
--- a/plugins/python-build/share/python-build/2.5.2
+++ b/plugins/python-build/share/python-build/2.5.2
@@ -1,3 +1,3 @@
-install_package "Python-2.5.2" "http://www.python.org/ftp/python/2.5.2/Python-2.5.2.tgz#3f7ca8aa86c6bd275426d63b46e07992"
+install_package "Python-2.5.2" "http://www.python.org/ftp/python/2.5.2/Python-2.5.2.tgz#3f7ca8aa86c6bd275426d63b46e07992" standard verify_py25
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/2.5.3 b/plugins/python-build/share/python-build/2.5.3
index 61bd5481..d928179c 100644
--- a/plugins/python-build/share/python-build/2.5.3
+++ b/plugins/python-build/share/python-build/2.5.3
@@ -1,3 +1,3 @@
-install_package "Python-2.5.3" "http://www.python.org/ftp/python/2.5.3/Python-2.5.3.tgz#a971f8928d6beb31ae0de56f7034d6a2"
+install_package "Python-2.5.3" "http://www.python.org/ftp/python/2.5.3/Python-2.5.3.tgz#a971f8928d6beb31ae0de56f7034d6a2" standard verify_py25
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/2.5.4 b/plugins/python-build/share/python-build/2.5.4
index a93bfcef..c808ba16 100644
--- a/plugins/python-build/share/python-build/2.5.4
+++ b/plugins/python-build/share/python-build/2.5.4
@@ -1,3 +1,3 @@
-install_package "Python-2.5.4" "http://www.python.org/ftp/python/2.5.4/Python-2.5.4.tgz#ad47b23778f64edadaaa8b5534986eed"
+install_package "Python-2.5.4" "http://www.python.org/ftp/python/2.5.4/Python-2.5.4.tgz#ad47b23778f64edadaaa8b5534986eed" standard verify_py25
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/2.5.5 b/plugins/python-build/share/python-build/2.5.5
index 7079d565..ef884815 100644
--- a/plugins/python-build/share/python-build/2.5.5
+++ b/plugins/python-build/share/python-build/2.5.5
@@ -1,3 +1,3 @@
-install_package "Python-2.5.5" "http://www.python.org/ftp/python/2.5.5/Python-2.5.5.tgz#abc02139ca38f4258e8e372f7da05c88"
+install_package "Python-2.5.5" "http://www.python.org/ftp/python/2.5.5/Python-2.5.5.tgz#abc02139ca38f4258e8e372f7da05c88" standard verify_py25
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/2.5.6 b/plugins/python-build/share/python-build/2.5.6
index b993f942..307b2131 100644
--- a/plugins/python-build/share/python-build/2.5.6
+++ b/plugins/python-build/share/python-build/2.5.6
@@ -1,3 +1,3 @@
-install_package "Python-2.5.6" "http://www.python.org/ftp/python/2.5.6/Python-2.5.6.tgz#d1d9c83928561addf11d00b22a18ca50"
+install_package "Python-2.5.6" "http://www.python.org/ftp/python/2.5.6/Python-2.5.6.tgz#d1d9c83928561addf11d00b22a18ca50" standard verify_py25
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/2.6.6 b/plugins/python-build/share/python-build/2.6.6
index a6730d45..8867b3b3 100644
--- a/plugins/python-build/share/python-build/2.6.6
+++ b/plugins/python-build/share/python-build/2.6.6
@@ -1,3 +1,3 @@
-install_package "Python-2.6.6" "http://www.python.org/ftp/python/2.6.6/Python-2.6.6.tgz#b2f209df270a33315e62c1ffac1937f0"
+install_package "Python-2.6.6" "http://www.python.org/ftp/python/2.6.6/Python-2.6.6.tgz#b2f209df270a33315e62c1ffac1937f0" standard verify_py26
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/2.6.7 b/plugins/python-build/share/python-build/2.6.7
index 8c771171..1d110422 100644
--- a/plugins/python-build/share/python-build/2.6.7
+++ b/plugins/python-build/share/python-build/2.6.7
@@ -1,3 +1,3 @@
-install_package "Python-2.6.7" "http://www.python.org/ftp/python/2.6.7/Python-2.6.7.tgz#af474f85a3af69ea50438a2a48039d7d"
+install_package "Python-2.6.7" "http://www.python.org/ftp/python/2.6.7/Python-2.6.7.tgz#af474f85a3af69ea50438a2a48039d7d" standard verify_py26
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/2.6.8 b/plugins/python-build/share/python-build/2.6.8
index d5a60af3..ac80d192 100644
--- a/plugins/python-build/share/python-build/2.6.8
+++ b/plugins/python-build/share/python-build/2.6.8
@@ -1,3 +1,3 @@
-install_package "Python-2.6.8" "http://www.python.org/ftp/python/2.6.8/Python-2.6.8.tgz#f6c1781f5d73ab7dfa5181f43ea065f6"
+install_package "Python-2.6.8" "http://www.python.org/ftp/python/2.6.8/Python-2.6.8.tgz#f6c1781f5d73ab7dfa5181f43ea065f6" standard verify_py26
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/2.7 b/plugins/python-build/share/python-build/2.7
index a40a1d6a..f94ca926 100644
--- a/plugins/python-build/share/python-build/2.7
+++ b/plugins/python-build/share/python-build/2.7
@@ -1,3 +1,3 @@
-install_package "Python-2.7" "http://www.python.org/ftp/python/2.7/Python-2.7.tgz#35f56b092ecf39a6bd59d64f142aae0f"
+install_package "Python-2.7" "http://www.python.org/ftp/python/2.7/Python-2.7.tgz#35f56b092ecf39a6bd59d64f142aae0f" standard verify_py27
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/2.7.1 b/plugins/python-build/share/python-build/2.7.1
index 69dc7d46..a2e76f68 100644
--- a/plugins/python-build/share/python-build/2.7.1
+++ b/plugins/python-build/share/python-build/2.7.1
@@ -1,3 +1,3 @@
-install_package "Python-2.7.1" "http://www.python.org/ftp/python/2.7.1/Python-2.7.1.tgz#15ed56733655e3fab785e49a7278d2fb"
+install_package "Python-2.7.1" "http://www.python.org/ftp/python/2.7.1/Python-2.7.1.tgz#15ed56733655e3fab785e49a7278d2fb" standard verify_py27
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/2.7.2 b/plugins/python-build/share/python-build/2.7.2
index 194f3ce9..0d752844 100644
--- a/plugins/python-build/share/python-build/2.7.2
+++ b/plugins/python-build/share/python-build/2.7.2
@@ -1,3 +1,3 @@
-install_package "Python-2.7.2" "http://www.python.org/ftp/python/2.7.2/Python-2.7.2.tgz#0ddfe265f1b3d0a8c2459f5bf66894c7"
+install_package "Python-2.7.2" "http://www.python.org/ftp/python/2.7.2/Python-2.7.2.tgz#0ddfe265f1b3d0a8c2459f5bf66894c7" standard verify_py27
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/2.7.3 b/plugins/python-build/share/python-build/2.7.3
index 88830609..7e6123d6 100644
--- a/plugins/python-build/share/python-build/2.7.3
+++ b/plugins/python-build/share/python-build/2.7.3
@@ -1,3 +1,3 @@
-install_package "Python-2.7.3" "http://www.python.org/ftp/python/2.7.3/Python-2.7.3.tgz#2cf641732ac23b18d139be077bd906cd"
+install_package "Python-2.7.3" "http://www.python.org/ftp/python/2.7.3/Python-2.7.3.tgz#2cf641732ac23b18d139be077bd906cd" standard verify_py27
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/2.7.4 b/plugins/python-build/share/python-build/2.7.4
index 011293a7..22943d4a 100644
--- a/plugins/python-build/share/python-build/2.7.4
+++ b/plugins/python-build/share/python-build/2.7.4
@@ -1,3 +1,3 @@
-install_package "Python-2.7.4" "http://www.python.org/ftp/python/2.7.4/Python-2.7.4.tgz#592603cfaf4490a980e93ecb92bde44a"
+install_package "Python-2.7.4" "http://www.python.org/ftp/python/2.7.4/Python-2.7.4.tgz#592603cfaf4490a980e93ecb92bde44a" standard verify_py27
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/3.0.1 b/plugins/python-build/share/python-build/3.0.1
index ff2d3177..30a4361d 100644
--- a/plugins/python-build/share/python-build/3.0.1
+++ b/plugins/python-build/share/python-build/3.0.1
@@ -1,3 +1,3 @@
-install_package "Python-3.0.1" "http://www.python.org/ftp/python/3.0.1/Python-3.0.1.tgz#220b73f0a1a20c4b1cdf9f9db4cd52fe"
+install_package "Python-3.0.1" "http://www.python.org/ftp/python/3.0.1/Python-3.0.1.tgz#220b73f0a1a20c4b1cdf9f9db4cd52fe" standard verify_py3
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/3.1.3 b/plugins/python-build/share/python-build/3.1.3
index 8f48cda3..c55e5a62 100644
--- a/plugins/python-build/share/python-build/3.1.3
+++ b/plugins/python-build/share/python-build/3.1.3
@@ -1,3 +1,3 @@
-install_package "Python-3.1.3" "http://www.python.org/ftp/python/3.1.3/Python-3.1.3.tgz#d797fa6abe82c21227e328f05a535424"
+install_package "Python-3.1.3" "http://www.python.org/ftp/python/3.1.3/Python-3.1.3.tgz#d797fa6abe82c21227e328f05a535424" standard verify_py3
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/3.1.4 b/plugins/python-build/share/python-build/3.1.4
index 73aa3ddd..f0b273dc 100644
--- a/plugins/python-build/share/python-build/3.1.4
+++ b/plugins/python-build/share/python-build/3.1.4
@@ -1,3 +1,3 @@
-install_package "Python-3.1.4" "http://www.python.org/ftp/python/3.1.4/Python-3.1.4.tgz#fa9f8efdc63944c8393870282e8b5c35"
+install_package "Python-3.1.4" "http://www.python.org/ftp/python/3.1.4/Python-3.1.4.tgz#fa9f8efdc63944c8393870282e8b5c35" standard verify_py3
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/3.1.5 b/plugins/python-build/share/python-build/3.1.5
index 6a43e6f0..4369f46f 100644
--- a/plugins/python-build/share/python-build/3.1.5
+++ b/plugins/python-build/share/python-build/3.1.5
@@ -1,3 +1,3 @@
-install_package "Python-3.1.5" "http://www.python.org/ftp/python/3.1.5/Python-3.1.5.tgz#02196d3fc7bc76bdda68aa36b0dd16ab"
+install_package "Python-3.1.5" "http://www.python.org/ftp/python/3.1.5/Python-3.1.5.tgz#02196d3fc7bc76bdda68aa36b0dd16ab" standard verify_py3
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/3.2 b/plugins/python-build/share/python-build/3.2
index 32d00859..002d9c76 100644
--- a/plugins/python-build/share/python-build/3.2
+++ b/plugins/python-build/share/python-build/3.2
@@ -1,3 +1,3 @@
-install_package "Python-3.2" "http://www.python.org/ftp/python/3.2/Python-3.2.tgz#5efe838a7878b170f6728d7e5d7517af"
+install_package "Python-3.2" "http://www.python.org/ftp/python/3.2/Python-3.2.tgz#5efe838a7878b170f6728d7e5d7517af" standard verify_py3
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/3.2.1 b/plugins/python-build/share/python-build/3.2.1
index 18900026..47682521 100644
--- a/plugins/python-build/share/python-build/3.2.1
+++ b/plugins/python-build/share/python-build/3.2.1
@@ -1,3 +1,3 @@
-install_package "Python-3.2.1" "http://www.python.org/ftp/python/3.2.1/Python-3.2.1.tgz#6c2aa3481cadb7bdf74e625fffc352b2"
+install_package "Python-3.2.1" "http://www.python.org/ftp/python/3.2.1/Python-3.2.1.tgz#6c2aa3481cadb7bdf74e625fffc352b2" standard verify_py3
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/3.2.2 b/plugins/python-build/share/python-build/3.2.2
index f6cced45..51007054 100644
--- a/plugins/python-build/share/python-build/3.2.2
+++ b/plugins/python-build/share/python-build/3.2.2
@@ -1,3 +1,3 @@
-install_package "Python-3.2.2" "http://www.python.org/ftp/python/3.2.2/Python-3.2.2.tgz#3c63a6d97333f4da35976b6a0755eb67"
+install_package "Python-3.2.2" "http://www.python.org/ftp/python/3.2.2/Python-3.2.2.tgz#3c63a6d97333f4da35976b6a0755eb67" standard verify_py3
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/3.2.3 b/plugins/python-build/share/python-build/3.2.3
index f68375e2..ede280c7 100644
--- a/plugins/python-build/share/python-build/3.2.3
+++ b/plugins/python-build/share/python-build/3.2.3
@@ -1,3 +1,3 @@
-install_package "Python-3.2.3" "http://www.python.org/ftp/python/3.2.3/Python-3.2.3.tgz#dcf3a738e7028f1deb41b180bf0e2cbc"
+install_package "Python-3.2.3" "http://www.python.org/ftp/python/3.2.3/Python-3.2.3.tgz#dcf3a738e7028f1deb41b180bf0e2cbc" standard verify_py3
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/3.2.4 b/plugins/python-build/share/python-build/3.2.4
index e3f13f36..80cfbe4e 100644
--- a/plugins/python-build/share/python-build/3.2.4
+++ b/plugins/python-build/share/python-build/3.2.4
@@ -1,3 +1,3 @@
-install_package "Python-3.2.4" "http://www.python.org/ftp/python/3.2.4/Python-3.2.4.tgz#3af05758d0bc2b1a27249e8d622c3e91"
+install_package "Python-3.2.4" "http://www.python.org/ftp/python/3.2.4/Python-3.2.4.tgz#3af05758d0bc2b1a27249e8d622c3e91" standard verify_py3
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/3.3.0 b/plugins/python-build/share/python-build/3.3.0
index b45cb83d..a0de22ce 100644
--- a/plugins/python-build/share/python-build/3.3.0
+++ b/plugins/python-build/share/python-build/3.3.0
@@ -1,3 +1,3 @@
-install_package "Python-3.3.0" "http://python.org/ftp/python/3.3.0/Python-3.3.0.tgz#198a64f7a04d1d5e95ce2782d5fd8254"
+install_package "Python-3.3.0" "http://python.org/ftp/python/3.3.0/Python-3.3.0.tgz#198a64f7a04d1d5e95ce2782d5fd8254" standard verify_py3
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/3.3.1 b/plugins/python-build/share/python-build/3.3.1
index 6371b6e2..84e3a3a2 100644
--- a/plugins/python-build/share/python-build/3.3.1
+++ b/plugins/python-build/share/python-build/3.3.1
@@ -1,3 +1,3 @@
-install_package "Python-3.3.1" "http://python.org/ftp/python/3.3.1/Python-3.3.1.tgz#c19bfd6ea252b61779a4f2996fb3b330"
+install_package "Python-3.3.1" "http://python.org/ftp/python/3.3.1/Python-3.3.1.tgz#c19bfd6ea252b61779a4f2996fb3b330" standard verify_py3
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/stackless-2.7.2 b/plugins/python-build/share/python-build/stackless-2.7.2
index 6db324ad..243904a7 100644
--- a/plugins/python-build/share/python-build/stackless-2.7.2
+++ b/plugins/python-build/share/python-build/stackless-2.7.2
@@ -1,3 +1,3 @@
-install_package "stackless-272-export" "http://www.stackless.com/binaries/stackless-272-export.tar.bz2#79a718db998f2cdd95478d2cb54d56f2"
+install_package "stackless-272-export" "http://www.stackless.com/binaries/stackless-272-export.tar.bz2#79a718db998f2cdd95478d2cb54d56f2" standard verify_py27
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python
diff --git a/plugins/python-build/share/python-build/stackless-3.2.2 b/plugins/python-build/share/python-build/stackless-3.2.2
index 2fc83506..3c4c00eb 100644
--- a/plugins/python-build/share/python-build/stackless-3.2.2
+++ b/plugins/python-build/share/python-build/stackless-3.2.2
@@ -1,3 +1,3 @@
-install_package "stackless-322-export" "http://www.stackless.com/binaries/stackless-322-export.tar.bz2#3a3edcfb4240bdcc580cec2baea60af4"
+install_package "stackless-322-export" "http://www.stackless.com/binaries/stackless-322-export.tar.bz2#3a3edcfb4240bdcc580cec2baea60af4" standard verify_py3
 install_package "distribute-0.6.40" "http://pypi.python.org/packages/source/d/distribute/distribute-0.6.40.tar.gz#7a2dd4033999af22fe9591fa84f3e599" python
 install_package "pip-1.3.1" "http://pypi.python.org/packages/source/p/pip/pip-1.3.1.tar.gz#cbb27a191cebc58997c4da8513863153" python