From d9e44704eb558af337ca61723bcd07da247cae1a Mon Sep 17 00:00:00 2001
From: Profpatsch <mail@profpatsch.de>
Date: Sun, 8 Dec 2019 00:02:22 +0100
Subject: pkgs.profpatsch: init youtube2audiopodcast

Minimal PoC of a small application which can download and convert a
youtube video with youtube-dl and then serve it via HTTP.
---
 pkgs/profpatsch/default.nix | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'pkgs/profpatsch/default.nix')

diff --git a/pkgs/profpatsch/default.nix b/pkgs/profpatsch/default.nix
index df9fce21..17ceeb8e 100644
--- a/pkgs/profpatsch/default.nix
+++ b/pkgs/profpatsch/default.nix
@@ -109,6 +109,15 @@ let
     inherit pkgs execlineb-with-builtins;
   };
 
+  # remove everything but a few selected environment variables
+  runInEmptyEnv = keepVars:
+    let
+        importas = pkgs.lib.concatMap (var: [ "importas" "-i" var var ]) keepVars;
+        # we have to explicitely call export here, because PATH is probably empty
+        export = pkgs.lib.concatMap (var: [ "${pkgs.execline}/bin/export" var ''''${${var}}'' ]) keepVars;
+    in writeExeclineFns.writeExecline "empty-env" {}
+         (importas ++ [ "emptyenv" ] ++ export ++ [ "${pkgs.execline}/bin/exec" "$@" ]);
+
 
 in rec {
   inherit (nixperiments)
-- 
cgit 1.4.1