ghcjs: move list of stage 1 packages into ghcjs derivation

This makes it easier to ensure that the list of stage 1 packages accurately matches the given version of ghcjs, and makes it possible for this list to be overridden

pkgs/development/compilers/ghcjs/default.nix

@@ -136,6 +136,33 @@ in mkDerivation (rec {
     isGhcjs = true;
     inherit nodejs ghcjsBoot;
     inherit (ghcjsNodePkgs) "socket.io";
+
+    # 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"
+      "rts"
+      "bytestring"
+      "containers"
+      "deepseq"
+      "directory"
+      "filepath"
+      "ghc-prim"
+      "ghcjs-prim"
+      "integer-gmp"
+      "old-locale"
+      "pretty"
+      "primitive"
+      "process"
+      "template-haskell"
+      "time"
+      "transformers"
+      "unix"
+    ];
+
     mkStage2 = import ./stage2.nix {
       inherit ghcjsBoot;
     };