From 695a026f5fb5d71593ba5b6bb7b8f91e2e6a3f53 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Domen=20Ko=C5=BEar?= <domen@dev.si>
Date: Thu, 28 Dec 2017 10:01:55 +0000
Subject: [PATCH] ghc: wire up new binary ghc for bootstrapping

This change brings development feedback loop improvement
from a couple of ghc rebuilds to only one for working on generic
builder.

To completely eliminate the rebuilds, use two nixpkgs clones
and point boot packages to the unmodified one.
---
 .../compilers/ghc/7.10.3-binary.nix           |  1 -
 .../compilers/ghc/7.8.4-binary.nix            |  1 -
 .../compilers/ghc/8.2.1-binary.nix            |  1 -
 pkgs/top-level/haskell-packages.nix           | 27 +++++++++++++------
 4 files changed, 19 insertions(+), 11 deletions(-)

diff --git a/pkgs/development/compilers/ghc/7.10.3-binary.nix b/pkgs/development/compilers/ghc/7.10.3-binary.nix
index 4733da06098c..a0ee96829f6f 100644
--- a/pkgs/development/compilers/ghc/7.10.3-binary.nix
+++ b/pkgs/development/compilers/ghc/7.10.3-binary.nix
@@ -1,7 +1,6 @@
 { stdenv
 , fetchurl, perl
 , ncurses5, gmp, libiconv
-, enableIntegerSimple ? false
 , gcc
 }:
 
diff --git a/pkgs/development/compilers/ghc/7.8.4-binary.nix b/pkgs/development/compilers/ghc/7.8.4-binary.nix
index 0a6892615e4b..9525536ef0dd 100644
--- a/pkgs/development/compilers/ghc/7.8.4-binary.nix
+++ b/pkgs/development/compilers/ghc/7.8.4-binary.nix
@@ -1,7 +1,6 @@
 { stdenv
 , fetchurl, perl
 , ncurses5, gmp, libiconv
-, enableIntegerSimple ? false
 }:
 
 let
diff --git a/pkgs/development/compilers/ghc/8.2.1-binary.nix b/pkgs/development/compilers/ghc/8.2.1-binary.nix
index 8ddf8a941993..de02ac79aa30 100644
--- a/pkgs/development/compilers/ghc/8.2.1-binary.nix
+++ b/pkgs/development/compilers/ghc/8.2.1-binary.nix
@@ -1,7 +1,6 @@
 { stdenv
 , fetchurl, perl, gcc
 , ncurses5, gmp, libiconv
-, enableIntegerSimple ? false
 }:
 
 let
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index a6dc825b9ba2..36d719fd2639 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -6,6 +6,9 @@ let
     "ghc6102Binary"
     "ghc704Binary"
     "ghc742Binary"
+    "ghc784Binary"
+    "ghc7103Binary"
+    "ghc821Binary"
     "ghc6104"
     "ghc6123"
     "ghc704"
@@ -63,41 +66,41 @@ in rec {
       ghc = compiler.ghc742Binary;
     };
     ghc7103 = callPackage ../development/compilers/ghc/7.10.3.nix rec {
-      bootPkgs = packages.ghc784;
+      bootPkgs = packages.ghc7103Binary;
       inherit (bootPkgs) hscolour;
     };
     ghc802 = callPackage ../development/compilers/ghc/8.0.2.nix rec {
-      bootPkgs = packages.ghc7103;
+      bootPkgs = packages.ghc7103Binary;
       inherit (bootPkgs) hscolour;
       sphinx = pkgs.python27Packages.sphinx;
     };
     ghc822 = callPackage ../development/compilers/ghc/8.2.2.nix rec {
-      bootPkgs = packages.ghc802;
+      bootPkgs = packages.ghc7103Binary;
       inherit (bootPkgs) hscolour alex happy;
       inherit buildPlatform targetPlatform;
       sphinx = pkgs.python3Packages.sphinx;
       selfPkgs = packages.ghc822;
     };
     ghcHEAD = callPackage ../development/compilers/ghc/head.nix rec {
-      bootPkgs = packages.ghc822;
+      bootPkgs = packages.ghc821Binary;
       inherit (bootPkgs) alex happy;
       inherit buildPlatform targetPlatform;
       selfPkgs = packages.ghcHEAD;
     };
     ghcjs = packages.ghc7103.callPackage ../development/compilers/ghcjs {
-      bootPkgs = packages.ghc7103;
+      bootPkgs = packages.ghc821Binary;
     };
     ghcjsHEAD = packages.ghc802.callPackage ../development/compilers/ghcjs/head.nix {
-      bootPkgs = packages.ghc802;
+      bootPkgs = packages.ghc821Binary;
     };
     ghcHaLVM240 = callPackage ../development/compilers/halvm/2.4.0.nix rec {
-      bootPkgs = packages.ghc802;
+      bootPkgs = packages.ghc7103Binary;
       inherit (bootPkgs) hscolour alex happy;
     };
 
     uhc = callPackage ../development/compilers/uhc/default.nix ({
       stdenv = pkgs.clangStdenv;
-      inherit (pkgs.haskellPackages) ghcWithPackages;
+      inherit (packages.ghc7103Binary) ghcWithPackages;
     });
 
     # The integer-simple attribute set contains all the GHC compilers
@@ -124,6 +127,10 @@ in rec {
       ghc = compiler.ghc7103;
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-7.10.x.nix { };
     };
+    ghc7103Binary = callPackage ../development/haskell-modules {
+      ghc = compiler.ghc7103Binary;
+      compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-7.10.x.nix { };
+    };
     ghc802 = callPackage ../development/haskell-modules {
       ghc = compiler.ghc802;
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-8.0.x.nix { };
@@ -132,6 +139,10 @@ in rec {
       ghc = compiler.ghc822;
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-8.2.x.nix { };
     };
+    ghc821Binary = callPackage ../development/haskell-modules {
+      ghc = compiler.ghc821Binary;
+      compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-8.2.x.nix { };
+    };
     ghcHEAD = callPackage ../development/haskell-modules {
       ghc = compiler.ghcHEAD;
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-head.nix { };