From 60543c4f9ee05091a0b7aab3620adbc3eeef4b2c Mon Sep 17 00:00:00 2001
From: Manuel Mendez <mmendez534@gmail.com>
Date: Sun, 3 Apr 2022 22:29:02 -0400
Subject: [PATCH] go: Drop unnecessary backslash-escape
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There's no backslash interpretation going on within single-quote strings
which means there's no need to escape the backslash. Since this was going
on within single-quote strings the $exclude variable ended up having 2
backslashes (`\\`) instead of the intended single backslash. This meant
that the regex that was built up was incorrect. For example prometheus'
exclude contents before and after this change are:

✕: \(/_\|examples\|Godeps\|testdata\\|documentation/prometheus-mixin\)
✓: \(/_\|examples\|Godeps\|testdata\|documentation/prometheus-mixin\)
---
 pkgs/development/go-modules/generic/default.nix  | 2 +-
 pkgs/development/go-packages/generic/default.nix | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/go-modules/generic/default.nix b/pkgs/development/go-modules/generic/default.nix
index f986d164ee8c..e2428edbb268 100644
--- a/pkgs/development/go-modules/generic/default.nix
+++ b/pkgs/development/go-modules/generic/default.nix
@@ -176,7 +176,7 @@ let
         IFS=' ' read -r -a excludedArr <<<$excludedPackages
         printf -v excludedAlternates '%s\\|' "''${excludedArr[@]}"
         excludedAlternates=''${excludedAlternates%\\|} # drop final \| added by printf
-        exclude+='\\|'"$excludedAlternates"
+        exclude+='\|'"$excludedAlternates"
       fi
       exclude+='\)'
 
diff --git a/pkgs/development/go-packages/generic/default.nix b/pkgs/development/go-packages/generic/default.nix
index 6e96f443ff9f..3d633324eefe 100644
--- a/pkgs/development/go-packages/generic/default.nix
+++ b/pkgs/development/go-packages/generic/default.nix
@@ -155,7 +155,7 @@ let
         IFS=' ' read -r -a excludedArr <<<$excludedPackages
         printf -v excludedAlternates '%s\\|' "''${excludedArr[@]}"
         excludedAlternates=''${excludedAlternates%\\|} # drop final \| added by printf
-        exclude+='\\|'"$excludedAlternates"
+        exclude+='\|'"$excludedAlternates"
       fi
       exclude+='\)'