diff --git a/pkgs/development/compilers/ghcjs-ng/8.4/dep-overrides.nix b/pkgs/development/compilers/ghcjs-ng/8.4/dep-overrides.nix
deleted file mode 100644
index efba0dc8634f..000000000000
--- a/pkgs/development/compilers/ghcjs-ng/8.4/dep-overrides.nix
+++ /dev/null
@@ -1,9 +0,0 @@
-{ haskellLib }:
-
-let inherit (haskellLib) dontCheck doJailbreak;
-in self: super: {
-  haddock-library-ghcjs = doJailbreak (dontCheck super.haddock-library-ghcjs);
-  haddock-api-ghcjs = doJailbreak super.haddock-api-ghcjs;
-
-  template-haskell-ghcjs = doJailbreak super.template-haskell-ghcjs;
-}
diff --git a/pkgs/development/compilers/ghcjs-ng/8.4/git.json b/pkgs/development/compilers/ghcjs-ng/8.4/git.json
deleted file mode 100644
index cfa6cf1d7d26..000000000000
--- a/pkgs/development/compilers/ghcjs-ng/8.4/git.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-  "url": "https://github.com/ghcjs/ghcjs",
-  "rev": "81bf5f31dabaa711aab234cb119eb9c998ccb129",
-  "sha256": "1bgnc71kjqicqv2xq8p70nck600yi2p7g4k9r1jclv21ib7i5hmx",
-  "fetchSubmodules": true
-}
diff --git a/pkgs/development/compilers/ghcjs-ng/8.4/stage0.nix b/pkgs/development/compilers/ghcjs-ng/8.4/stage0.nix
deleted file mode 100644
index 3b89db144979..000000000000
--- a/pkgs/development/compilers/ghcjs-ng/8.4/stage0.nix
+++ /dev/null
@@ -1,176 +0,0 @@
-{ callPackage, configuredSrc }:
-
-{
-
-  ghcjs = callPackage
-    ({ mkDerivation, aeson, array, attoparsec, base, base16-bytestring
-    , base64-bytestring, binary, bytestring, Cabal, containers
-    , cryptohash, data-default, deepseq, directory, executable-path
-    , filepath, ghc-api-ghcjs, ghc-boot, ghc-paths, ghci-ghcjs
-    , ghcjs-th, haddock-api-ghcjs, hashable, haskell-src-exts
-    , haskell-src-meta, http-types, HUnit, lens, lifted-base, mtl
-    , network, optparse-applicative, parallel, parsec, process, random
-    , regex-posix, safe, shelly, split, stdenv, stringsearch, syb
-    , system-fileio, system-filepath, tar, template-haskell
-    , template-haskell-ghcjs, terminfo, test-framework
-    , test-framework-hunit, text, time, transformers
-    , transformers-compat, unix, unix-compat, unordered-containers
-    , vector, wai, wai-app-static, wai-extra, wai-websockets, warp
-    , webdriver, websockets, wl-pprint-text, yaml
-    }:
-    mkDerivation {
-      pname = "ghcjs";
-      version = "8.4.0.1";
-      src = configuredSrc + /.;
-      isLibrary = true;
-      isExecutable = true;
-      enableSeparateDataOutput = true;
-      setupHaskellDepends = [
-        base Cabal containers directory filepath process template-haskell
-        transformers
-      ];
-      libraryHaskellDepends = [
-        aeson array attoparsec base base16-bytestring base64-bytestring
-        binary bytestring Cabal containers cryptohash data-default deepseq
-        directory filepath ghc-api-ghcjs ghc-boot ghc-paths ghci-ghcjs
-        ghcjs-th hashable haskell-src-exts haskell-src-meta lens mtl
-        optparse-applicative parallel parsec process regex-posix safe split
-        stringsearch syb template-haskell template-haskell-ghcjs text time
-        transformers unordered-containers vector wl-pprint-text yaml
-      ];
-      executableHaskellDepends = [
-        aeson base binary bytestring Cabal containers directory
-        executable-path filepath ghc-api-ghcjs ghc-boot haddock-api-ghcjs
-        lens mtl optparse-applicative process shelly system-fileio
-        system-filepath tar terminfo text time transformers
-        transformers-compat unix unix-compat unordered-containers vector
-        yaml
-      ];
-      testHaskellDepends = [
-        aeson base bytestring data-default deepseq directory http-types
-        HUnit lens lifted-base network optparse-applicative process random
-        shelly system-fileio system-filepath test-framework
-        test-framework-hunit text time transformers unordered-containers
-        wai wai-app-static wai-extra wai-websockets warp webdriver
-        websockets yaml
-      ];
-      description = "Haskell to JavaScript compiler";
-      license = stdenv.lib.licenses.mit;
-    }) {};
-
-  ghc-api-ghcjs = callPackage
-    ({ mkDerivation, array, base, binary, bytestring, containers
-    , deepseq, directory, filepath, ghc-boot, ghc-boot-th, ghci-ghcjs
-    , hpc, process, stdenv, template-haskell-ghcjs, terminfo, time
-    , transformers, unix
-    }:
-    mkDerivation {
-      pname = "ghc-api-ghcjs";
-      version = "8.4.0";
-      src = configuredSrc + /lib/ghc-api-ghcjs;
-      libraryHaskellDepends = [
-        array base binary bytestring containers deepseq directory filepath
-        ghc-boot ghc-boot-th ghci-ghcjs hpc process template-haskell-ghcjs
-        terminfo time transformers unix
-      ];
-      homepage = "http://www.haskell.org/ghc/";
-      description = "The GHC API (customized for GHCJS)";
-      license = stdenv.lib.licenses.bsd3;
-    }) {};
-
-  ghci-ghcjs = callPackage
-    ({ mkDerivation, array, base, binary, bytestring, containers
-    , deepseq, filepath, ghc-boot, ghc-boot-th, stdenv
-    , template-haskell-ghcjs, transformers, unix
-    }:
-    mkDerivation {
-      pname = "ghci-ghcjs";
-      version = "8.4.0";
-      src = configuredSrc + /lib/ghci-ghcjs;
-      libraryHaskellDepends = [
-        array base binary bytestring containers deepseq filepath ghc-boot
-        ghc-boot-th template-haskell-ghcjs transformers unix
-      ];
-      description = "The library supporting GHC's interactive interpreter (customized for GHCJS)";
-      license = stdenv.lib.licenses.bsd3;
-    }) {};
-
-  ghcjs-th = callPackage
-    ({ mkDerivation, base, binary, bytestring, containers, ghc-prim
-    , ghci-ghcjs, stdenv, template-haskell-ghcjs
-    }:
-    mkDerivation {
-      pname = "ghcjs-th";
-      version = "0.1.0.0";
-      src = configuredSrc + /lib/ghcjs-th;
-      libraryHaskellDepends = [
-        base binary bytestring containers ghc-prim ghci-ghcjs
-        template-haskell-ghcjs
-      ];
-      homepage = "https://github.com/ghcjs";
-      license = stdenv.lib.licenses.mit;
-    }) {};
-
-  haddock-api-ghcjs = callPackage
-    ({ mkDerivation, array, base, bytestring, Cabal, containers, deepseq
-    , directory, filepath, ghc-api-ghcjs, ghc-boot, ghc-paths
-    , haddock-library-ghcjs, hspec, hspec-discover, QuickCheck, stdenv
-    , transformers, xhtml
-    }:
-    mkDerivation {
-      pname = "haddock-api-ghcjs";
-      version = "2.20.0";
-      src = configuredSrc + /lib/haddock-api-ghcjs;
-      enableSeparateDataOutput = true;
-      libraryHaskellDepends = [
-        array base bytestring Cabal containers deepseq directory filepath
-        ghc-api-ghcjs ghc-boot ghc-paths haddock-library-ghcjs transformers
-        xhtml
-      ];
-      testHaskellDepends = [
-        array base bytestring Cabal containers deepseq directory filepath
-        ghc-api-ghcjs ghc-boot ghc-paths haddock-library-ghcjs hspec
-        QuickCheck transformers xhtml
-      ];
-      testToolDepends = [ hspec-discover ];
-      homepage = "http://www.haskell.org/haddock/";
-      description = "A documentation-generation tool for Haskell libraries";
-      license = stdenv.lib.licenses.bsd3;
-    }) {};
-
-  haddock-library-ghcjs = callPackage
-    ({ mkDerivation, base, base-compat, bytestring, containers, deepseq
-    , directory, filepath, haddock-library, hspec, hspec-discover
-    , optparse-applicative, QuickCheck, stdenv, transformers, tree-diff
-    }:
-    mkDerivation {
-      pname = "haddock-library-ghcjs";
-      version = "1.6.0";
-      src = configuredSrc + /lib/haddock-library-ghcjs;
-      libraryHaskellDepends = [
-        base bytestring containers deepseq transformers
-      ];
-      testHaskellDepends = [
-        base base-compat bytestring containers deepseq directory filepath
-        haddock-library hspec optparse-applicative QuickCheck transformers
-        tree-diff
-      ];
-      testToolDepends = [ hspec-discover ];
-      doHaddock = false;
-      homepage = "http://www.haskell.org/haddock/";
-      description = "Library exposing some functionality of Haddock";
-      license = stdenv.lib.licenses.bsd3;
-    }) {};
-
-  template-haskell-ghcjs = callPackage
-    ({ mkDerivation, base, ghc-boot-th, pretty, stdenv }:
-    mkDerivation {
-      pname = "template-haskell-ghcjs";
-      version = "2.13.0.0";
-      src = configuredSrc + /lib/template-haskell-ghcjs;
-      libraryHaskellDepends = [ base ghc-boot-th pretty ];
-      description = "Support library for Template Haskell (customized for GHCJS)";
-      license = stdenv.lib.licenses.bsd3;
-    }) {};
-
-}
diff --git a/pkgs/development/compilers/ghcjs/base.nix b/pkgs/development/compilers/ghcjs/base.nix
deleted file mode 100644
index ba0bbb1962b8..000000000000
--- a/pkgs/development/compilers/ghcjs/base.nix
+++ /dev/null
@@ -1,161 +0,0 @@
-{ mkDerivation
-, lib
-, broken ? false
-, test-framework
-, test-framework-hunit
-, data-default
-, ghc-paths
-, haskell-src-exts
-, haskell-src-meta
-, optparse-applicative
-, system-fileio
-, system-filepath
-, text-binary
-, unordered-containers
-, cabal-install
-, wl-pprint-text
-, base16-bytestring
-, executable-path
-, transformers-compat
-, haddock-api
-, regex-posix
-
-, bootPkgs, gmp
-
-, runCommand
-, nodejs, stdenv, filepath, HTTP, HUnit, mtl, network, QuickCheck, random, stm
-, time
-, zlib, aeson, attoparsec, bzlib, hashable
-, lens
-, parallel, safe, shelly, split, stringsearch, syb
-, tar, terminfo
-, vector, yaml
-, alex, happy, git, gnumake, autoconf, patch
-, automake, libtool
-, cryptohash
-, haddock, hspec, xhtml, pkgs
-, coreutils
-, libiconv
-
-, version
-, ghcjsSrc
-, ghcjsBootSrc
-, ghcjsBoot ? import ./ghcjs-boot.nix {
-    inherit runCommand;
-    src = ghcjsBootSrc;
-  }
-, 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/^\([^_]*\)\(.*\)$/      \"\1\"/'"
-, stage1Packages
-
-, stage2 ? import ./stage2.nix
-
-, patches
-
-# used for resolving compiler plugins
-, ghcLibdir ? null
-}:
-let
-  inherit (bootPkgs) ghc;
-
-in mkDerivation ({
-  pname = "ghcjs";
-  inherit version;
-  src = ghcjsSrc;
-  isLibrary = true;
-  isExecutable = true;
-  jailbreak = true;
-  doHaddock = false;
-  doCheck = false;
-  buildDepends = [
-    filepath HTTP mtl network random stm time zlib aeson attoparsec
-    bzlib data-default ghc-paths hashable haskell-src-exts haskell-src-meta
-    lens optparse-applicative parallel safe shelly split
-    stringsearch syb system-fileio system-filepath tar terminfo text-binary
-    unordered-containers vector wl-pprint-text yaml
-    alex happy git gnumake autoconf automake libtool patch gmp
-    base16-bytestring cryptohash executable-path haddock-api
-    transformers-compat QuickCheck haddock hspec xhtml
-    regex-posix libiconv
-  ];
-  buildTools = [ nodejs git ];
-  testDepends = [
-    HUnit test-framework test-framework-hunit
-  ];
-  inherit patches;
-  postPatch = ''
-    substituteInPlace Setup.hs \
-      --replace "/usr/bin/env" "${coreutils}/bin/env"
-
-    substituteInPlace src/Compiler/Info.hs \
-      --replace "@PREFIX@" "$out"          \
-      --replace "@VERSION@" "${version}"
-
-    substituteInPlace src-bin/Boot.hs \
-      --replace "@PREFIX@" "$out"     \
-      --replace "@CC@"     "${stdenv.cc}/bin/cc"
-  '';
-  preBuild = ''
-    export HOME="$TMP"
-
-    local topDir=$out/lib/ghcjs-${version}
-    mkdir -p $topDir
-
-    cp -r ${ghcjsBoot} $topDir/ghcjs-boot
-    chmod -R u+w $topDir/ghcjs-boot
-
-    cp -r ${shims} $topDir/shims
-    chmod -R u+w $topDir/shims
-
-    # Make the patches be relative their corresponding package's directory.
-    # See: https://github.com/ghcjs/ghcjs-boot/pull/12
-    for patch in "$topDir/ghcjs-boot/patches/"*.patch; do
-      echo "fixing patch: $patch"
-      sed -i -e 's@ \(a\|b\)/boot/[^/]\+@ \1@g' $patch
-    done
-  '';
-  # We build with --quick so we can build stage 2 packages separately.
-  # This is necessary due to: https://github.com/haskell/cabal/commit/af19fb2c2d231d8deff1cb24164a2bf7efb8905a
-  # Cabal otherwise fails to build: http://hydra.nixos.org/build/31824079/nixlog/1/raw
-  postInstall = ''
-    PATH=$out/bin:$PATH LD_LIBRARY_PATH=${gmp.out}/lib:${stdenv.cc}/lib64:$LD_LIBRARY_PATH \
-      env -u GHC_PACKAGE_PATH $out/bin/ghcjs-boot \
-        --dev \
-        --quick \
-        --with-cabal ${cabal-install}/bin/cabal \
-        --with-gmp-includes ${gmp.dev}/include \
-        --with-gmp-libraries ${gmp.out}/lib
-  '' + lib.optionalString (ghcLibdir != null) ''
-    printf '%s' '${ghcLibdir}' > "$out/lib/ghcjs-${version}/ghc_libdir"
-  '';
-  passthru = {
-    inherit bootPkgs;
-    ghcVersion = ghc.version;
-    isCross = true;
-    isGhcjs = true;
-    inherit nodejs ghcjsBoot;
-    socket-io = pkgs.nodePackages."socket.io";
-    haskellCompilerName = "ghcjs-${version}";
-
-    # let us assume ghcjs is never actually cross compiled
-    targetPrefix = "";
-
-    enableShared = true;
-
-    inherit stage1Packages;
-    mkStage2 = stage2 {
-      inherit ghcjsBoot;
-    };
-  };
-
-  homepage = https://github.com/ghcjs/ghcjs;
-  description = "A Haskell to JavaScript compiler that uses the GHC API";
-  license = stdenv.lib.licenses.bsd3;
-  platforms = ghc.meta.platforms;
-  maintainers = with stdenv.lib.maintainers; [ jwiegley cstrahan dmjio elvishjerricco ];
-  hydraPlatforms = if broken then [] else ghc.meta.platforms;
-  inherit broken;
-})
diff --git a/pkgs/development/compilers/ghcjs/gen-stage2.rb b/pkgs/development/compilers/ghcjs/gen-stage2.rb
deleted file mode 100755
index 709e635db55c..000000000000
--- a/pkgs/development/compilers/ghcjs/gen-stage2.rb
+++ /dev/null
@@ -1,54 +0,0 @@
-#!/usr/bin/env ruby
-
-require 'pathname'
-
-# from boot.yaml in ghcjs/ghcjs
-stage2_packages = [
-  "boot/async",
-  "boot/aeson",
-  "boot/attoparsec",
-  "boot/case-insensitive",
-  "boot/dlist",
-  "boot/extensible-exceptions",
-  "boot/hashable",
-  "boot/mtl",
-  "boot/old-time",
-  "boot/parallel",
-  "boot/scientific",
-  "boot/stm",
-  "boot/syb",
-  "boot/text",
-  "boot/unordered-containers",
-  "boot/vector",
-  "ghcjs/ghcjs-base",
-  # not listed under stage2, but needed when "quick booting".
-  "boot/cabal/Cabal"
-]
-
-nixpkgs = File.expand_path("../../../../..", __FILE__)
-boot = ARGV[0] || `nix-build #{nixpkgs} -A haskell.packages.ghcjs.ghc.ghcjsBoot`.chomp
-
-out = "".dup
-out << "{ ghcjsBoot }: { callPackage }:\n"
-out << "\n"
-out << "{\n"
-
-stage2_packages.each do |package|
-  name = Pathname.new(package).basename
-  nix = `cabal2nix file://#{boot}/#{package}  --jailbreak`
-  nix.sub!(/src =.*?$/, "src = \"${ghcjsBoot}/#{package}\";")
-  nix.sub!("  doCheck = false;\n", "")
-  nix.sub!("libraryHaskellDepends", "doCheck = false;\n  libraryHaskellDepends")
-  # cabal2nix somehow generates the deps for 'text' as if it had selected flag
-  # 'integer-simple' (despite not passing the flag within the generated
-  # expression). We want integer-gmp instead.
-  nix.gsub!(/integer-simple/, "integer-gmp")
-  nix = nix.split("\n").join("\n      ")
-
-  out << "  #{name} = callPackage\n"
-  out << "    (#{nix}) {};\n"
-end
-
-out << "}"
-
-puts out
diff --git a/pkgs/development/compilers/ghcjs/ghcjs-boot.nix b/pkgs/development/compilers/ghcjs/ghcjs-boot.nix
deleted file mode 100644
index c00e13a92404..000000000000
--- a/pkgs/development/compilers/ghcjs/ghcjs-boot.nix
+++ /dev/null
@@ -1,25 +0,0 @@
-{ runCommand, src }:
-
-# we remove the patches so ghcjs-boot doesn't try to apply them again.
-runCommand "${src.name}-patched" {} ''
-  cp -r ${src} $out
-  chmod -R +w $out
-
-  # Make the patches be relative their corresponding package's directory.
-  # See: https://github.com/ghcjs/ghcjs-boot/pull/12
-  for patch in $out/patches/*.patch; do
-    echo ">> fixing patch: $patch"
-    sed -i -e 's@ \(a\|b\)/boot/[^/]\+@ \1@g' $patch
-  done
-
-  for package in $(cd $out/boot; echo *); do
-    patch=$out/patches/$package.patch
-    if [[ -e $patch ]]; then
-      echo ">> patching package: $package"
-      pushd $out/boot/$package
-      patch -p1 < $patch
-      rm $patch
-      popd
-    fi
-  done
-''
diff --git a/pkgs/development/haskell-modules/configuration-ghcjs.nix b/pkgs/development/haskell-modules/configuration-ghcjs.nix
index 489f363db6a0..862b45299a63 100644
--- a/pkgs/development/haskell-modules/configuration-ghcjs.nix
+++ b/pkgs/development/haskell-modules/configuration-ghcjs.nix
@@ -43,13 +43,12 @@ self: super:
   # integer-simple is wrong.
   #integer-simple = null;
 
-  # These packages are core libraries in GHC 7.10.x, but not here.
+  # These packages are core libraries in GHC 8.6..x, but not here.
   bin-package-db = null;
-  haskeline = self.haskeline_0_7_3_1;
-  hoopl = self.hoopl_3_10_2_1;
-  hpc = self.hpc_0_6_0_2;
-  terminfo = self.terminfo_0_4_1_1;
-  xhtml = self.xhtml_3000_2_1;
+  haskeline = self.haskeline_0_7_5_0;
+  hpc = self.hpc_0_6_0_3;
+  terminfo = self.terminfo_0_4_1_4;
+  xhtml = self.xhtml_3000_2_2_1;
 
 ## OTHER PACKAGES
 
@@ -115,7 +114,6 @@ self: super:
       ];
       license = pkgs.stdenv.lib.licenses.mit;
       description = "bindings for https://github.com/Matt-Esch/virtual-dom";
-      inherit (src) homepage;
     }) {};
 
   ghcjs-dom = overrideCabal super.ghcjs-dom (drv: {
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index be7c0bc41718..8f1133d9ba26 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -7,7 +7,6 @@ let
     "ghc863Binary"
     "ghc844"
     "ghcjs"
-    "ghcjs84"
     "ghcjs86"
     "integer-simple"
   ];
@@ -70,12 +69,6 @@ in {
       llvmPackages = pkgs.llvmPackages_6;
     };
     ghcjs = compiler.ghcjs86;
-    ghcjs84 = callPackage ../development/compilers/ghcjs-ng {
-      bootPkgs = packages.ghc844;
-      ghcjsSrcJson = ../development/compilers/ghcjs-ng/8.4/git.json;
-      stage0 = ../development/compilers/ghcjs-ng/8.4/stage0.nix;
-      ghcjsDepOverrides = callPackage ../development/compilers/ghcjs-ng/8.4/dep-overrides.nix {};
-    };
     ghcjs86 = callPackage ../development/compilers/ghcjs-ng {
       bootPkgs = packages.ghc865;
       ghcjsSrcJson = ../development/compilers/ghcjs-ng/8.6/git.json;
@@ -133,12 +126,6 @@ in {
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-head.nix { };
     };
     ghcjs = packages.ghcjs86;
-    ghcjs84 = callPackage ../development/haskell-modules rec {
-      buildHaskellPackages = ghc.bootPkgs;
-      ghc = bh.compiler.ghcjs84;
-      compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-8.4.x.nix { };
-      packageSetConfig = callPackage ../development/haskell-modules/configuration-ghcjs.nix { };
-    };
     ghcjs86 = callPackage ../development/haskell-modules rec {
       buildHaskellPackages = ghc.bootPkgs;
       ghc = bh.compiler.ghcjs86;