From 708822250e017f0256b0bace5af27a7232e6e1fd Mon Sep 17 00:00:00 2001
From: Aneesh Agrawal <aneeshusa@gmail.com>
Date: Fri, 14 Oct 2016 13:45:53 -0400
Subject: [PATCH] Python 3.x: Add `python` symlink

Add a symlink for "python" in the python3 derivation to provide a
default Python executable.
---
 .../interpreters/python/cpython/3.3/default.nix            | 7 +++++++
 .../interpreters/python/cpython/3.4/default.nix            | 7 +++++++
 .../interpreters/python/cpython/3.5/default.nix            | 7 +++++++
 .../interpreters/python/cpython/3.6/default.nix            | 7 +++++++
 4 files changed, 28 insertions(+)

diff --git a/pkgs/development/interpreters/python/cpython/3.3/default.nix b/pkgs/development/interpreters/python/cpython/3.3/default.nix
index 9ac9d81c9c9921..6a65e8353bc6f9 100644
--- a/pkgs/development/interpreters/python/cpython/3.3/default.nix
+++ b/pkgs/development/interpreters/python/cpython/3.3/default.nix
@@ -80,6 +80,13 @@ in stdenv.mkDerivation {
 
     # Python on Nix is not manylinux1 compatible. https://github.com/NixOS/nixpkgs/issues/18484
     echo "manylinux1_compatible=False" >> $out/lib/${libPrefix}/_manylinux.py
+
+    # Use Python3 as default python
+    ln -s "$out/bin/idle3" "$out/bin/idle"
+    ln -s "$out/bin/pip3" "$out/bin/pip"
+    ln -s "$out/bin/pydoc3" "$out/bin/pydoc"
+    ln -s "$out/bin/python3" "$out/bin/python"
+    ln -s "$out/bin/python3-config" "$out/bin/python-config"
   '';
 
   postFixup = ''
diff --git a/pkgs/development/interpreters/python/cpython/3.4/default.nix b/pkgs/development/interpreters/python/cpython/3.4/default.nix
index 68bee72d33d718..cf9918a1d22932 100644
--- a/pkgs/development/interpreters/python/cpython/3.4/default.nix
+++ b/pkgs/development/interpreters/python/cpython/3.4/default.nix
@@ -89,6 +89,13 @@ in stdenv.mkDerivation {
 
     # Python on Nix is not manylinux1 compatible. https://github.com/NixOS/nixpkgs/issues/18484
     echo "manylinux1_compatible=False" >> $out/lib/${libPrefix}/_manylinux.py
+
+    # Use Python3 as default python
+    ln -s "$out/bin/idle3" "$out/bin/idle"
+    ln -s "$out/bin/pip3" "$out/bin/pip"
+    ln -s "$out/bin/pydoc3" "$out/bin/pydoc"
+    ln -s "$out/bin/python3" "$out/bin/python"
+    ln -s "$out/bin/python3-config" "$out/bin/python-config"
   '';
 
   postFixup = ''
diff --git a/pkgs/development/interpreters/python/cpython/3.5/default.nix b/pkgs/development/interpreters/python/cpython/3.5/default.nix
index 7a9a9c7462283e..f5878bf9d6a66f 100644
--- a/pkgs/development/interpreters/python/cpython/3.5/default.nix
+++ b/pkgs/development/interpreters/python/cpython/3.5/default.nix
@@ -89,6 +89,13 @@ in stdenv.mkDerivation {
 
     # Python on Nix is not manylinux1 compatible. https://github.com/NixOS/nixpkgs/issues/18484
     echo "manylinux1_compatible=False" >> $out/lib/${libPrefix}/_manylinux.py
+
+    # Use Python3 as default python
+    ln -s "$out/bin/idle3" "$out/bin/idle"
+    ln -s "$out/bin/pip3" "$out/bin/pip"
+    ln -s "$out/bin/pydoc3" "$out/bin/pydoc"
+    ln -s "$out/bin/python3" "$out/bin/python"
+    ln -s "$out/bin/python3-config" "$out/bin/python-config"
   '';
 
   postFixup = ''
diff --git a/pkgs/development/interpreters/python/cpython/3.6/default.nix b/pkgs/development/interpreters/python/cpython/3.6/default.nix
index 29b139178dabbe..9baa03b382c90c 100644
--- a/pkgs/development/interpreters/python/cpython/3.6/default.nix
+++ b/pkgs/development/interpreters/python/cpython/3.6/default.nix
@@ -89,6 +89,13 @@ in stdenv.mkDerivation {
 
     # Python on Nix is not manylinux1 compatible. https://github.com/NixOS/nixpkgs/issues/18484
     echo "manylinux1_compatible=False" >> $out/lib/${libPrefix}/_manylinux.py
+
+    # Use Python3 as default python
+    ln -s "$out/bin/idle3" "$out/bin/idle"
+    ln -s "$out/bin/pip3" "$out/bin/pip"
+    ln -s "$out/bin/pydoc3" "$out/bin/pydoc"
+    ln -s "$out/bin/python3" "$out/bin/python"
+    ln -s "$out/bin/python3-config" "$out/bin/python-config"
   '';
 
   passthru = rec {