Add IPython.install_dependency("ipython-dev")

Author: tkf

ci/before_script.jl

@@ -17,8 +17,12 @@ Pkg.clone(pwd())
 Pkg.build("IPython")
 
 using IPython
-IPython.install_dependency("ipython"; force=true)
 IPython.install_dependency("pytest"; force=true)
+IPython.install_dependency("ipython"; force=true)
+if get(ENV, "CONDA_JL_VERSION", "") != "2"
+    # Use regular IPython when 7.0 is out.
+    IPython.install_dependency("ipython-dev"; force=true)
+end
 
 @info "show_versions.jl"
 include("show_versions.jl")

src/convenience.jl

@@ -111,7 +111,10 @@ function conda_installation(package)
 end
 
 function pip_installation(package)
-    if package in (conda_packages..., "julia")
+    if package in (conda_packages..., "ipython-dev", "julia")
+        if package == "ipython-dev"
+            package = "git+git://github.com/ipython/ipython#egg=ipython"
+        end
         command = `$(PyCall.pyprogramname) -m pip install $package`
         message = """
         Installing $package for $(PyCall.pyprogramname)

src/replhelper/core.py

@@ -154,6 +154,15 @@ def ipython_options(**kwargs):
 cause segmentation fault with tab completion.  For segfault-free
 IPython, upgrade to version 7 or above (which may still be in
 development stage depending on the time you read this message).
+
+If you need to install development version of IPython and understand
+what would happen to your Python environment by doing so, executing
+the following command in Julia may help:
+
+    IPython.install_dependency("ipython-dev")
+
+It prints the installation command to be executed and prompts your
+input (yes/no) before really executing it.
 """
 
 segfault_warned = False