diff --git a/.github/workflows/wiki-doctest-installation.yml b/.github/workflows/wiki-doctest-installation.yml
new file mode 100644
index 0000000000..b8f4b9e407
--- /dev/null
+++ b/.github/workflows/wiki-doctest-installation.yml
@@ -0,0 +1,60 @@
+# JUST AN EXPERIMENT - delete/replace as necessary before merge
+name: Wiki - doctest Installation
+on: [push]
+
+jobs:
+  linux:
+    name: Debian (Python) - install
+    runs-on: ubuntu-latest
+    container: python:${{ matrix.python-version }}
+    strategy:
+      matrix:
+        python-version: ['2.7', '3.7']
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@master
+
+    - name: Default python install.py
+      run: |
+        python install.py
+        test -d /opt/rez/bin/rez
+        test -d /opt/rez/completion
+
+    - name: pip install --target
+      run: |
+        pip install --ignore-installed --force-reinstall --target target .
+        cd target
+        echo
+        echo "==========================================="
+        echo "Installed into (pwd, maxdepth 2):"
+        pwd
+        echo "==========================================="
+        find . -maxdepth 2 ! -name '*.pyc' -ls
+
+    - name: pip install --prefix
+      run: |
+        pip install --ignore-installed --force-reinstall --prefix prefix .
+        cd prefix
+        echo
+        echo "==========================================="
+        echo "Installed into (pwd, maxdepth 5):"
+        pwd
+        echo "==========================================="
+        find . -maxdepth 5 ! -name '*.pyc' -ls
+
+    - name: rez-pip --install
+      run: |
+        python install.py
+        export PATH=${PATH}:/opt/rez/bin/rez
+        echo "==========================================="
+        rez-pip --install .
+        echo "==========================================="
+        rez view rez
+        cd $(find $HOME/packages/rez -maxdepth 2 -type d | tail -1)
+        echo
+        echo "==========================================="
+        echo "Installed as rez package (pwd, maxdepth 3):"
+        pwd
+        echo "==========================================="
+        find -maxdepth 3 ! -name '*.pyc' -ls
\ No newline at end of file
diff --git a/src/rez/pip.py b/src/rez/pip.py
index 0bc5beae10..747aef0a05 100644
--- a/src/rez/pip.py
+++ b/src/rez/pip.py
@@ -7,6 +7,7 @@
 from rez.vendor.distlib.markers import interpret
 from rez.vendor.distlib.util import parse_name_and_version
 from rez.vendor.enum.enum import Enum
+from rez.vendor.six.six.moves import StringIO
 from rez.resolved_context import ResolvedContext
 from rez.utils.system import popen
 from rez.utils.pip import get_rez_requirements, pip_to_rez_package_name, \
@@ -19,7 +20,6 @@
 from rez.system import System
 
 from tempfile import mkdtemp
-from StringIO import StringIO
 from pipes import quote
 from pprint import pformat
 import subprocess
diff --git a/src/rez/plugin_managers.py b/src/rez/plugin_managers.py
index c10faf32ba..16788f9284 100644
--- a/src/rez/plugin_managers.py
+++ b/src/rez/plugin_managers.py
@@ -158,7 +158,7 @@ def load_plugins(self):
                     self.failed_plugins[nameish] = str(e)
                     if config.debug("plugins"):
                         import traceback
-                        from StringIO import StringIO
+                        from rez.vendor.six.six.moves import StringIO
                         out = StringIO()
                         traceback.print_exc(file=out)
                         print_debug(out.getvalue())
diff --git a/src/rezgui/dialogs/ResolveDialog.py b/src/rezgui/dialogs/ResolveDialog.py
index 230ccc16fe..37d8c83afd 100644
--- a/src/rezgui/dialogs/ResolveDialog.py
+++ b/src/rezgui/dialogs/ResolveDialog.py
@@ -7,8 +7,8 @@
 from rezgui.objects.ResolveThread import ResolveThread
 from rezgui.objects.App import app
 from rez.vendor.version.requirement import Requirement
+from rez.vendor.six.six.moves import StringIO
 from rez.config import config
-import StringIO
 
 
 class ResolveDialog(QtGui.QDialog, StoreSizeMixin):
@@ -274,7 +274,7 @@ def _resolve_finished(self):
 
         if self.resolver.success():
             if self.advanced:
-                sbuf = StringIO.StringIO()
+                sbuf = StringIO()
                 self.resolver.context.print_info(buf=sbuf)
                 msg = "\nTHE RESOLVE SUCCEEDED:\n\n"
                 msg += sbuf.getvalue()
diff --git a/wiki/pages/Installation.md b/wiki/pages/Installation.md
index 00bd4ac275..c839f5f8a5 100644
--- a/wiki/pages/Installation.md
+++ b/wiki/pages/Installation.md
@@ -26,13 +26,19 @@ source /opt/rez/completion/complete.sh
 
 ## Installation Via Pip
 
-It is possible to install rez with pip, like so:
+It is possible to install rez with pip, like so (from source root directory):
 
 ```
-]$ pip install rez
+]$ pip install --target /opt .
 ```
 
-However, this comes with a caveat - rez command line tools _are not guaranteed
+If you already have `rez` setup, you could also try:
+
+```
+]$ rez-pip --install .
+```
+
+However, these comes with a caveat - rez command line tools _are not guaranteed
 to work correctly_ once inside a rez environment (ie after using the `rez-env`
 command). The reasons are given in the next section.