ghcjs-{7.10, 8.0}: Make symmetrical

There's no reason other than misleading branch names to prefer one over
another.

pkgs/development/compilers/ghcjs/7.10/default.nix

@@ -0,0 +1,50 @@
+{ fetchgit, fetchFromGitHub, bootPkgs, cabal-install }:
+
+bootPkgs.callPackage ../base.nix {
+  version = "0.2.0";
+
+  inherit bootPkgs cabal-install;
+
+  ghcjsSrc = fetchFromGitHub {
+    owner = "ghcjs";
+    repo = "ghcjs";
+    rev = "689c7753f50353dd05606ed79c51cd5a94d3922a";
+    sha256 = "076020a9gjv8ldj5ckm43sbzq9s6c5xj6lpd8v28ybpiama3m6b4";
+  };
+  ghcjsBootSrc = fetchgit {
+    url = git://github.com/ghcjs/ghcjs-boot.git;
+    rev = "8c549931da27ba9e607f77195208ec156c840c8a";
+    sha256 = "0yg9bnabja39qysh9pg1335qbvbc0r2mdw6cky94p7kavacndfdv";
+    fetchSubmodules = true;
+  };
+
+  shims = import ./shims.nix { inherit fetchFromGitHub; };
+  stage1Packages = [
+    "array"
+    "base"
+    "binary"
+    "bytestring"
+    "containers"
+    "deepseq"
+    "directory"
+    "filepath"
+    "ghc-boot"
+    "ghc-boot-th"
+    "ghc-prim"
+    "ghci"
+    "ghcjs-prim"
+    "ghcjs-th"
+    "integer-gmp"
+    "pretty"
+    "primitive"
+    "process"
+    "rts"
+    "template-haskell"
+    "time"
+    "transformers"
+    "unix"
+  ];
+  stage2 = import ./stage2.nix;
+
+  patches = [ ./boot.patch ];
+}

pkgs/development/compilers/ghcjs/8.0/default.nix

@@ -1,6 +1,6 @@
 { fetchgit, fetchFromGitHub, bootPkgs, cabal-install }:
 
-bootPkgs.callPackage ./base.nix {
+bootPkgs.callPackage ../base.nix {
   version = "0.2.020170323";
 
   inherit bootPkgs cabal-install;
@@ -18,7 +18,7 @@ bootPkgs.callPackage ./base.nix {
     fetchSubmodules = true;
   };
 
-  shims = import ./head_shims.nix { inherit fetchFromGitHub; };
+  shims = import ./shims.nix { inherit fetchFromGitHub; };
   stage1Packages = [
     "array"
     "base"
@@ -44,7 +44,7 @@ bootPkgs.callPackage ./base.nix {
     "transformers"
     "unix"
   ];
-  stage2 = import ./head_stage2.nix;
+  stage2 = import ./stage2.nix;
 
-  patches = [ ./ghcjs-head.patch ];
+  patches = [ ./boot.patch ];
 }

pkgs/development/compilers/ghcjs/base.nix

@@ -37,57 +37,23 @@
 , coreutils
 , libiconv
 
-, version ? "0.2.0"
-, ghcjsSrc ? fetchFromGitHub {
-    owner = "ghcjs";
-    repo = "ghcjs";
-    rev = "689c7753f50353dd05606ed79c51cd5a94d3922a";
-    sha256 = "076020a9gjv8ldj5ckm43sbzq9s6c5xj6lpd8v28ybpiama3m6b4";
-  }
-, ghcjsBootSrc ? fetchgit {
-    url = git://github.com/ghcjs/ghcjs-boot.git;
-    rev = "8c549931da27ba9e607f77195208ec156c840c8a";
-    sha256 = "0yg9bnabja39qysh9pg1335qbvbc0r2mdw6cky94p7kavacndfdv";
-    fetchSubmodules = true;
-  }
+, version
+, ghcjsSrc
+, ghcjsBootSrc
 , ghcjsBoot ? import ./ghcjs-boot.nix {
     inherit runCommand;
     src = ghcjsBootSrc;
   }
-, shims ? import ./shims.nix { inherit fetchFromGitHub; }
+, shims
 
 # This is the list of the Stage 1 packages that are built into a booted ghcjs installation
 # It can be generated with the command:
 # nix-shell -p haskell.packages.ghcjs.ghc --command "ghcjs-pkg list | sed -n 's/^    \(.*\)-\([0-9.]*\)$/\1_\2/ p' | sed 's/\./_/g' | sed 's/^\([^_]*\)\(.*\)$/      \"\1\"/'"
-, stage1Packages ? [
-    "array"
-    "base"
-    "binary"
-    "bytestring"
-    "containers"
-    "deepseq"
-    "directory"
-    "filepath"
-    "ghc-boot"
-    "ghc-boot-th"
-    "ghc-prim"
-    "ghci"
-    "ghcjs-prim"
-    "ghcjs-th"
-    "integer-gmp"
-    "pretty"
-    "primitive"
-    "process"
-    "rts"
-    "template-haskell"
-    "time"
-    "transformers"
-    "unix"
-  ]
+, stage1Packages
 
 , stage2 ? import ./stage2.nix
 
-, patches ? [ ./ghcjs.patch ]
+, patches
 
 # used for resolving compiler plugins
 , ghcLibdir ? null

pkgs/development/compilers/ghcjs/default.nix

@@ -1,5 +0,0 @@
-{ bootPkgs, cabal-install }:
-
-bootPkgs.callPackage ./base.nix {
-  inherit bootPkgs cabal-install;
-}

pkgs/top-level/haskell-packages.nix

@@ -80,11 +80,11 @@ in {
       llvmPackages = pkgs.llvmPackages_5;
     };
     ghcjs = compiler.ghcjs84;
-    ghcjs710 = packages.ghc7103.callPackage ../development/compilers/ghcjs {
+    ghcjs710 = packages.ghc7103.callPackage ../development/compilers/ghcjs/7.10 {
       bootPkgs = packages.ghc7103;
       inherit (pkgs) cabal-install;
     };
-    ghcjs80 = packages.ghc802.callPackage ../development/compilers/ghcjs/head.nix {
+    ghcjs80 = packages.ghc802.callPackage ../development/compilers/ghcjs/8.0 {
       bootPkgs = packages.ghc802;
       inherit (pkgs) cabal-install;
     };