From 58aa380671b7a874679399ca06d5c98859232082 Mon Sep 17 00:00:00 2001
From: Maximilian Bosch <maximilian@mbosch.me>
Date: Wed, 4 Dec 2019 23:06:41 +0100
Subject: [PATCH] prometheus-wireguard-exporter: 3.2.1 -> 3.2.2

---
 .../monitoring/prometheus/wireguard-exporter.nix     | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/pkgs/servers/monitoring/prometheus/wireguard-exporter.nix b/pkgs/servers/monitoring/prometheus/wireguard-exporter.nix
index 0fc87556542d..7b92fc98e287 100644
--- a/pkgs/servers/monitoring/prometheus/wireguard-exporter.nix
+++ b/pkgs/servers/monitoring/prometheus/wireguard-exporter.nix
@@ -2,19 +2,25 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "wireguard-exporter";
-  version = "3.2.1";
+  version = "3.2.2";
 
   src = fetchFromGitHub {
     owner = "MindFlavor";
     repo = "prometheus_wireguard_exporter";
     rev = version;
-    sha256 = "1hyqvk3sxirm91lasf1z1wkzaql1g52my9a9q42z1h0hq66bc6nk";
+    sha256 = "18khym7ygj29w98zf6i1l5c2pz84zla2z34l5jnh595xvwfl94pc";
   };
 
-  cargoSha256 = "0wdyvl58h66xjcnl2kf3f7gnn4nc4vzpl870jc5x0qrkz28jppxz";
+  cargoSha256 = "1bi9nr1dhyv322pq6fjrhs12h3wdak53mvwkbyim1hmrp62vky4m";
 
   buildInputs = lib.optional stdenv.isDarwin Security;
 
+  # Commonly used hack in nixpkgs to allow unstable features on a stable rustc. This is needed
+  # since `prometheus_exporter_base` uses `#!feature[]` to enable async which
+  # is actually not needed as `async` is part of rustc 1.39.0-stable. This can be removed
+  # as soon as https://github.com/MindFlavor/prometheus_exporter_base/pull/15 is merged.
+  RUSTC_BOOTSTRAP = 1;
+
   meta = with lib; {
     description = "A Prometheus exporter for WireGuard, written in Rust.";
     license = licenses.mit;