From b5e3b1e58ad9f4d8237821572e4d149eea881ff2 Mon Sep 17 00:00:00 2001
From: lain <lain@soykaf.club>
Date: Tue, 4 Jun 2019 16:44:56 +0200
Subject: [PATCH] Mix: Swallow git error messages during version number
 handling.

Otherwise sometimes a 'fatal' message will be printed, confusing users.
---
 mix.exs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mix.exs b/mix.exs
index df1a7ced4..9447a2e4f 100644
--- a/mix.exs
+++ b/mix.exs
@@ -157,7 +157,8 @@ defp aliases do
   #   * the mix environment if different than prod
   defp version(version) do
     {git_tag, git_pre_release} =
-      with {tag, 0} <- System.cmd("git", ["describe", "--tags", "--abbrev=0"]),
+      with {tag, 0} <-
+             System.cmd("git", ["describe", "--tags", "--abbrev=0"], stderr_to_stdout: true),
            tag = String.trim(tag),
            {describe, 0} <- System.cmd("git", ["describe", "--tags", "--abbrev=8"]),
            describe = String.trim(describe),