From de2c043d5fdd4e0e26bdfe3a4b8e080daa05aa92 Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Mon, 31 Aug 2015 12:09:03 +0200
Subject: [PATCH] ghc: install bash completion shipped in version 7.10.x and
 later

Addresses one half of https://github.com/NixOS/nixpkgs/issues/9265.
---
 pkgs/development/compilers/ghc/7.10.2.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/development/compilers/ghc/7.10.2.nix b/pkgs/development/compilers/ghc/7.10.2.nix
index 064610c3557..834639380a5 100644
--- a/pkgs/development/compilers/ghc/7.10.2.nix
+++ b/pkgs/development/compilers/ghc/7.10.2.nix
@@ -47,6 +47,9 @@ stdenv.mkDerivation rec {
   stripDebugFlags = [ "-S" ] ++ stdenv.lib.optional (!stdenv.isDarwin) "--keep-file-symbols";
 
   postInstall = ''
+    # Install the bash completion file.
+    install -D -m 444 utils/completion/ghc.bash $out/share/bash-completion/completions/ghc
+
     # Patch scripts to include "readelf" and "cat" in $PATH.
     for i in "$out/bin/"*; do
       test ! -h $i || continue