From 738d3dda54b39f62be82886a17f6fbcb311c9ab4 Mon Sep 17 00:00:00 2001
From: Michael Faille <michael@faille.io>
Date: Sun, 9 Aug 2020 18:59:39 -0400
Subject: [PATCH] tanka: add bash completion

---
 pkgs/applications/networking/cluster/tanka/default.nix | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/pkgs/applications/networking/cluster/tanka/default.nix b/pkgs/applications/networking/cluster/tanka/default.nix
index b4900a2018d..fcf1fc054e0 100644
--- a/pkgs/applications/networking/cluster/tanka/default.nix
+++ b/pkgs/applications/networking/cluster/tanka/default.nix
@@ -1,4 +1,4 @@
-{ buildGoModule, fetchFromGitHub, lib }:
+{ buildGoModule, fetchFromGitHub, lib, installShellFiles }:
 
 buildGoModule rec {
   pname = "tanka";
@@ -15,6 +15,13 @@ buildGoModule rec {
 
   buildFlagsArray = [ "-ldflags=-s -w -X main.Version=${version}" ];
 
+  nativeBuildInputs = [ installShellFiles ];
+
+  postInstall = ''
+    echo "complete -C $out/bin/tk tk" > tk.bash
+    installShellCompletion tk.bash
+  '';
+
   meta = with lib; {
     description = "Flexible, reusable and concise configuration for Kubernetes";
     homepage = "https://github.com/grafana/tanka/";