no mention os setup.py install

IPython/testing/plugin/Makefile

@@ -67,7 +67,7 b' all: base ipython'
 
 # Main plugin and cleanup
 IPython_doctest_plugin.egg-info: $(SRC)
-	python setup.py install --prefix=$(PREFIX)
+	pip install . --prefix=$(PREFIX)
 	touch $@
 
 clean:

IPython/testing/plugin/README.txt

@@ -12,12 +12,7 b' install the plugin by using standard Python procedures (``setup.py install``'
 with appropriate arguments).
 
 To install the plugin using the Makefile, edit its first line to reflect where
-you'd like the installation.  If you want it system-wide, you may want to edit
-the install line in the plugin target to use sudo and no prefix::
-
-  sudo python setup.py install
-
-instead of the code using `--prefix` that's in there.
+you'd like the installation.
 
 Once you've set the prefix, simply build/install the plugin with::
 

tools/alldeps/README.txt

@@ -43,7 +43,7 b' It is meant to be used in an environment where you have your ``$PATH``,'
 ``$PYTHONPATH``, etc variables properly configured, so that the installation of
 packages can be made with (using ``~/usr/local`` as an example)::
 
-    python setup.py install --prefix=~/usr/local
+    pip install . --prefix=~/usr/local
 
 For an explanation of how to do this, see below.