From 160685725eac9adcc061a49f72cb3e7cd72d4e50 Mon Sep 17 00:00:00 2001
From: Ryan Trinkle <ryan.trinkle@gmail.com>
Date: Tue, 24 Oct 2017 09:42:22 -0400
Subject: [PATCH] haskell-packages: fix all-cabal-hashes component lookup

Previously, if a package name in a later component was a substring of a package name in an earlier component, the earlier component would be selected due to a partial-name match.  This commit prevents partial matches.
---
 pkgs/development/haskell-modules/make-package-set.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/haskell-modules/make-package-set.nix b/pkgs/development/haskell-modules/make-package-set.nix
index c234ff3e7802..ebfe44dd25ae 100644
--- a/pkgs/development/haskell-modules/make-package-set.nix
+++ b/pkgs/development/haskell-modules/make-package-set.nix
@@ -122,7 +122,7 @@ let
     ''
       set +o pipefail
       for component in ${all-cabal-hashes}/*; do
-        if ls $component | grep -q ${name}; then
+        if ls $component | grep -q "^${name}$"; then
           echo "builtins.storePath $component" > $out
           exit 0
         fi