aptly: add bash completion

pkgs/tools/misc/aptly/default.nix

@@ -1,17 +1,31 @@
 { stdenv, buildGoPackage, fetchFromGitHub, makeWrapper, gnupg1compat, bzip2, xz, graphviz }:
 
-buildGoPackage rec {
-  name = "aptly-${version}";
+let
+
   version = "0.9.7";
   rev = "v${version}";
 
-  src = fetchFromGitHub {
+  aptlySrc = fetchFromGitHub {
     inherit rev;
     owner = "smira";
     repo = "aptly";
     sha256 = "0j1bmqdah4i83r2cf8zcq87aif1qg90yasgf82yygk3hj0gw1h00";
   };
 
+  aptlyCompletionSrc = fetchFromGitHub {
+    rev = version;
+    owner = "aptly-dev";
+    repo = "aptly-bash-completion";
+    sha256 = "1yz3pr2jfczqv81as2q3cizwywj5ksw76vi15xlbx5njkjp4rbm4";
+  };
+
+in
+
+buildGoPackage {
+  name = "aptly-${version}";
+
+  src = aptlySrc;
+
   goPackagePath = "github.com/smira/aptly";
   goDeps = ./deps.nix;
 
@@ -19,6 +33,8 @@ buildGoPackage rec {
 
   postInstall = ''
     rm $bin/bin/man
+    mkdir -p $bin/share/bash-completion/completions
+    ln -s ${aptlyCompletionSrc}/aptly $bin/share/bash-completion/completions
     wrapProgram "$bin/bin/aptly" \
       --prefix PATH ":" "${stdenv.lib.makeBinPath [ gnupg1compat bzip2 xz graphviz ]}"
   '';