diff --git a/pkgs/applications/version-management/darcs/default.nix b/pkgs/applications/version-management/darcs/default.nix
index 3fb667b9461..a6b4b9a60de 100644
--- a/pkgs/applications/version-management/darcs/default.nix
+++ b/pkgs/applications/version-management/darcs/default.nix
@@ -15,6 +15,10 @@ cabal.mkDerivation (self: {
     zlib
   ];
   extraLibraries = [ curl ];
+  postInstall = ''
+    mkdir -p $out/etc/bash_completion.d
+    mv contrib/darcs_completion $out/etc/bash_completion.d/darcs
+  '';
   meta = {
     homepage = "http://darcs.net/";
     description = "a distributed, interactive, smart revision control system";