From d892f1aa90c3a22016d78e3bedefa773dc66879a Mon Sep 17 00:00:00 2001
From: John Ericson <John.Ericson@Obsidian.Systems>
Date: Fri, 28 Sep 2018 12:06:31 -0400
Subject: [PATCH] ghcjs-*: Expose the version of GHC used

This is more meaningful than the GHCJS version for most tasks.
---
 pkgs/development/compilers/ghcjs-ng/default.nix | 1 +
 pkgs/development/compilers/ghcjs/base.nix       | 1 +
 2 files changed, 2 insertions(+)

diff --git a/pkgs/development/compilers/ghcjs-ng/default.nix b/pkgs/development/compilers/ghcjs-ng/default.nix
index 92211042acd..025d74bcda0 100644
--- a/pkgs/development/compilers/ghcjs-ng/default.nix
+++ b/pkgs/development/compilers/ghcjs-ng/default.nix
@@ -42,6 +42,7 @@ let
     targetPrefix = "";
     inherit bootGhcjs;
     inherit (bootGhcjs) version;
+    ghcVersion = bootPkgs.ghc.version;
     isGhcjs = true;
 
     enableShared = true;
diff --git a/pkgs/development/compilers/ghcjs/base.nix b/pkgs/development/compilers/ghcjs/base.nix
index 34c332d87d9..93e6a47934f 100644
--- a/pkgs/development/compilers/ghcjs/base.nix
+++ b/pkgs/development/compilers/ghcjs/base.nix
@@ -133,6 +133,7 @@ in mkDerivation (rec {
   '';
   passthru = {
     inherit bootPkgs;
+    ghcVersion = ghc.version;
     isCross = true;
     isGhcjs = true;
     inherit nodejs ghcjsBoot;