diff --git a/pkgs/development/compilers/ghc/8.10.6.nix b/pkgs/development/compilers/ghc/8.10.6.nix
new file mode 100644
index 00000000000..fc23ef9f09f
--- /dev/null
+++ b/pkgs/development/compilers/ghc/8.10.6.nix
@@ -0,0 +1,276 @@
+{ lib, stdenv, pkgsBuildTarget, targetPackages
+
+# build-tools
+, bootPkgs
+, autoconf, automake, coreutils, fetchpatch, fetchurl, perl, python3, m4, sphinx, xattr
+, bash
+
+, libiconv ? null, ncurses
+
+, # GHC can be built with system libffi or a bundled one.
+  libffi ? null
+
+, useLLVM ? !stdenv.targetPlatform.isx86
+, # LLVM is conceptually a run-time-only depedendency, but for
+  # non-x86, we need LLVM to bootstrap later stages, so it becomes a
+  # build-time dependency too.
+  buildLlvmPackages, llvmPackages
+
+, # If enabled, GHC will be built with the GPL-free but slower integer-simple
+  # library instead of the faster but GPLed integer-gmp library.
+  enableIntegerSimple ? !(lib.meta.availableOn stdenv.hostPlatform gmp), gmp
+
+, # If enabled, use -fPIC when compiling static libs.
+  enableRelocatedStaticLibs ? stdenv.targetPlatform != stdenv.hostPlatform
+
+  # aarch64 outputs otherwise exceed 2GB limit
+, enableProfiledLibs ? !stdenv.targetPlatform.isAarch64
+
+, # Whether to build dynamic libs for the standard library (on the target
+  # platform). Static libs are always built.
+  enableShared ? !stdenv.targetPlatform.isWindows && !stdenv.targetPlatform.useiOSPrebuilt
+
+, # Whether to build terminfo.
+  enableTerminfo ? !stdenv.targetPlatform.isWindows
+
+, # What flavour to build. An empty string indicates no
+  # specific flavour and falls back to ghc default values.
+  ghcFlavour ? lib.optionalString (stdenv.targetPlatform != stdenv.hostPlatform)
+    (if useLLVM then "perf-cross" else "perf-cross-ncg")
+
+, # Whether to disable the large address space allocator
+  # necessary fix for iOS: https://www.reddit.com/r/haskell/comments/4ttdz1/building_an_osxi386_to_iosarm64_cross_compiler/d5qvd67/
+  disableLargeAddressSpace ? stdenv.targetPlatform.isDarwin && stdenv.targetPlatform.isAarch64
+}:
+
+assert !enableIntegerSimple -> gmp != null;
+
+let
+  inherit (stdenv) buildPlatform hostPlatform targetPlatform;
+
+  inherit (bootPkgs) ghc;
+
+  # TODO(@Ericson2314) Make unconditional
+  targetPrefix = lib.optionalString
+    (targetPlatform != hostPlatform)
+    "${targetPlatform.config}-";
+
+  buildMK = ''
+    BuildFlavour = ${ghcFlavour}
+    ifneq \"\$(BuildFlavour)\" \"\"
+    include mk/flavours/\$(BuildFlavour).mk
+    endif
+    DYNAMIC_GHC_PROGRAMS = ${if enableShared then "YES" else "NO"}
+    INTEGER_LIBRARY = ${if enableIntegerSimple then "integer-simple" else "integer-gmp"}
+  '' + lib.optionalString (targetPlatform != hostPlatform) ''
+    Stage1Only = ${if targetPlatform.system == hostPlatform.system then "NO" else "YES"}
+    CrossCompilePrefix = ${targetPrefix}
+    HADDOCK_DOCS = NO
+    BUILD_SPHINX_HTML = NO
+    BUILD_SPHINX_PDF = NO
+  '' + lib.optionalString (!enableProfiledLibs) ''
+    GhcLibWays = "v dyn"
+  '' + lib.optionalString enableRelocatedStaticLibs ''
+    GhcLibHcOpts += -fPIC
+    GhcRtsHcOpts += -fPIC
+  '' + lib.optionalString targetPlatform.useAndroidPrebuilt ''
+    EXTRA_CC_OPTS += -std=gnu99
+  '';
+
+  # Splicer will pull out correct variations
+  libDeps = platform: lib.optional enableTerminfo ncurses
+    ++ [libffi]
+    ++ lib.optional (!enableIntegerSimple) gmp
+    ++ lib.optional (platform.libc != "glibc" && !targetPlatform.isWindows) libiconv;
+
+  toolsForTarget = [
+    pkgsBuildTarget.targetPackages.stdenv.cc
+  ] ++ lib.optional useLLVM buildLlvmPackages.llvm;
+
+  targetCC = builtins.head toolsForTarget;
+
+  # ld.gold is disabled for musl libc due to https://sourceware.org/bugzilla/show_bug.cgi?id=23856
+  # see #84670 and #49071 for more background.
+  useLdGold = targetPlatform.isLinux && !(targetPlatform.useLLVM or false) && !targetPlatform.isMusl;
+
+  runtimeDeps = [
+    targetPackages.stdenv.cc.bintools
+    coreutils
+  ]
+  # On darwin, we need unwrapped bintools as well (for otool)
+  ++ lib.optionals (stdenv.targetPlatform.linker == "cctools") [
+    targetPackages.stdenv.cc.bintools.bintools
+  ];
+
+in
+stdenv.mkDerivation (rec {
+  version = "8.10.6";
+  name = "${targetPrefix}ghc-${version}";
+
+  src = fetchurl {
+    url = "https://downloads.haskell.org/ghc/${version}/ghc-${version}-src.tar.xz";
+    sha256 = "43afba72a533408b42c1492bd047b5e37e5f7204e41a5cedd3182cc841610ce9";
+  };
+
+  enableParallelBuilding = true;
+
+  outputs = [ "out" "doc" ];
+
+  patches = [
+    # See upstream patch at
+    # https://gitlab.haskell.org/ghc/ghc/-/merge_requests/4885. Since we build
+    # from source distributions, the auto-generated configure script needs to be
+    # patched as well, therefore we use an in-tree patch instead of pulling the
+    # upstream patch. Don't forget to check backport status of the upstream patch
+    # when adding new GHC releases in nixpkgs.
+    ./respect-ar-path.patch
+  ] ++ lib.optionals stdenv.isDarwin [
+    # Make Block.h compile with c++ compilers. Remove with the next release
+    (fetchpatch {
+      url = "https://gitlab.haskell.org/ghc/ghc/-/commit/97d0b0a367e4c6a52a17c3299439ac7de129da24.patch";
+      sha256 = "0r4zjj0bv1x1m2dgxp3adsf2xkr94fjnyj1igsivd9ilbs5ja0b5";
+    })
+  ];
+
+  postPatch = "patchShebangs .";
+
+  # GHC is a bit confused on its cross terminology.
+  preConfigure = ''
+    for env in $(env | grep '^TARGET_' | sed -E 's|\+?=.*||'); do
+      export "''${env#TARGET_}=''${!env}"
+    done
+    # GHC is a bit confused on its cross terminology, as these would normally be
+    # the *host* tools.
+    export CC="${targetCC}/bin/${targetCC.targetPrefix}cc"
+    export CXX="${targetCC}/bin/${targetCC.targetPrefix}cxx"
+    # Use gold to work around https://sourceware.org/bugzilla/show_bug.cgi?id=16177
+    export LD="${targetCC.bintools}/bin/${targetCC.bintools.targetPrefix}ld${lib.optionalString useLdGold ".gold"}"
+    export AS="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}as"
+    export AR="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}ar"
+    export NM="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}nm"
+    export RANLIB="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}ranlib"
+    export READELF="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}readelf"
+    export STRIP="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}strip"
+
+    echo -n "${buildMK}" > mk/build.mk
+    sed -i -e 's|-isysroot /Developer/SDKs/MacOSX10.5.sdk||' configure
+  '' + lib.optionalString (!stdenv.isDarwin) ''
+    export NIX_LDFLAGS+=" -rpath $out/lib/ghc-${version}"
+  '' + lib.optionalString stdenv.isDarwin ''
+    export NIX_LDFLAGS+=" -no_dtrace_dof"
+
+    # GHC tries the host xattr /usr/bin/xattr by default which fails since it expects python to be 2.7
+    export XATTR=${lib.getBin xattr}/bin/xattr
+  '' + lib.optionalString targetPlatform.useAndroidPrebuilt ''
+    sed -i -e '5i ,("armv7a-unknown-linux-androideabi", ("e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64", "cortex-a8", ""))' llvm-targets
+  '' + lib.optionalString targetPlatform.isMusl ''
+      echo "patching llvm-targets for musl targets..."
+      echo "Cloning these existing '*-linux-gnu*' targets:"
+      grep linux-gnu llvm-targets | sed 's/^/  /'
+      echo "(go go gadget sed)"
+      sed -i 's,\(^.*linux-\)gnu\(.*\)$,\0\n\1musl\2,' llvm-targets
+      echo "llvm-targets now contains these '*-linux-musl*' targets:"
+      grep linux-musl llvm-targets | sed 's/^/  /'
+
+      echo "And now patching to preserve '-musleabi' as done with '-gnueabi'"
+      # (aclocal.m4 is actual source, but patch configure as well since we don't re-gen)
+      for x in configure aclocal.m4; do
+        substituteInPlace $x \
+          --replace '*-android*|*-gnueabi*)' \
+                    '*-android*|*-gnueabi*|*-musleabi*)'
+      done
+  '';
+
+  # TODO(@Ericson2314): Always pass "--target" and always prefix.
+  configurePlatforms = [ "build" "host" ]
+    ++ lib.optional (targetPlatform != hostPlatform) "target";
+
+  # `--with` flags for libraries needed for RTS linker
+  configureFlags = [
+    "--datadir=$doc/share/doc/ghc"
+    "--with-curses-includes=${ncurses.dev}/include" "--with-curses-libraries=${ncurses.out}/lib"
+  ] ++ lib.optionals (libffi != null) [
+    "--with-system-libffi"
+    "--with-ffi-includes=${targetPackages.libffi.dev}/include"
+    "--with-ffi-libraries=${targetPackages.libffi.out}/lib"
+  ] ++ lib.optionals (targetPlatform == hostPlatform && !enableIntegerSimple) [
+    "--with-gmp-includes=${targetPackages.gmp.dev}/include"
+    "--with-gmp-libraries=${targetPackages.gmp.out}/lib"
+  ] ++ lib.optionals (targetPlatform == hostPlatform && hostPlatform.libc != "glibc" && !targetPlatform.isWindows) [
+    "--with-iconv-includes=${libiconv}/include"
+    "--with-iconv-libraries=${libiconv}/lib"
+  ] ++ lib.optionals (targetPlatform != hostPlatform) [
+    "--enable-bootstrap-with-devel-snapshot"
+  ] ++ lib.optionals useLdGold [
+    "CFLAGS=-fuse-ld=gold"
+    "CONF_GCC_LINKER_OPTS_STAGE1=-fuse-ld=gold"
+    "CONF_GCC_LINKER_OPTS_STAGE2=-fuse-ld=gold"
+  ] ++ lib.optionals (disableLargeAddressSpace) [
+    "--disable-large-address-space"
+  ];
+
+  # Make sure we never relax`$PATH` and hooks support for compatibility.
+  strictDeps = true;
+
+  # Don’t add -liconv to LDFLAGS automatically so that GHC will add it itself.
+  dontAddExtraLibs = true;
+
+  nativeBuildInputs = [
+    perl autoconf automake m4 python3 sphinx
+    ghc bootPkgs.alex bootPkgs.happy bootPkgs.hscolour
+  ];
+
+  # For building runtime libs
+  depsBuildTarget = toolsForTarget;
+
+  buildInputs = [ perl bash ] ++ (libDeps hostPlatform);
+
+  propagatedBuildInputs = [ targetPackages.stdenv.cc ]
+    ++ lib.optional useLLVM llvmPackages.llvm;
+
+  depsTargetTarget = map lib.getDev (libDeps targetPlatform);
+  depsTargetTargetPropagated = map (lib.getOutput "out") (libDeps targetPlatform);
+
+  # required, because otherwise all symbols from HSffi.o are stripped, and
+  # that in turn causes GHCi to abort
+  stripDebugFlags = [ "-S" ] ++ lib.optional (!targetPlatform.isDarwin) "--keep-file-symbols";
+
+  checkTarget = "test";
+
+  hardeningDisable = [ "format" ] ++ lib.optional stdenv.targetPlatform.isMusl "pie";
+
+  postInstall = ''
+    # Install the bash completion file.
+    install -D -m 444 utils/completion/ghc.bash $out/share/bash-completion/completions/${targetPrefix}ghc
+
+    # Patch scripts to include "readelf" and "cat" in $PATH.
+    for i in "$out/bin/"*; do
+      test ! -h $i || continue
+      egrep --quiet '^#!' <(head -n 1 $i) || continue
+      sed -i -e '2i export PATH="$PATH:${lib.makeBinPath runtimeDeps}"' $i
+    done
+  '';
+
+  passthru = {
+    inherit bootPkgs targetPrefix;
+
+    inherit llvmPackages;
+    inherit enableShared;
+
+    # Our Cabal compiler name
+    haskellCompilerName = "ghc-${version}";
+  };
+
+  meta = {
+    homepage = "http://haskell.org/ghc";
+    description = "The Glasgow Haskell Compiler";
+    maintainers = with lib.maintainers; [ marcweber andres peti ];
+    timeout = 24 * 3600;
+    inherit (ghc.meta) license platforms;
+  };
+
+} // lib.optionalAttrs targetPlatform.useAndroidPrebuilt {
+  dontStrip = true;
+  dontPatchELF = true;
+  noAuditTmpdir = true;
+})
diff --git a/pkgs/development/tools/haskell/haskell-language-server/withWrapper.nix b/pkgs/development/tools/haskell/haskell-language-server/withWrapper.nix
index 23bd3dd3267..2a6d0cfdef5 100644
--- a/pkgs/development/tools/haskell/haskell-language-server/withWrapper.nix
+++ b/pkgs/development/tools/haskell/haskell-language-server/withWrapper.nix
@@ -1,4 +1,4 @@
-{ lib, supportedGhcVersions ? [ "884" "8104" ], stdenv, haskellPackages
+{ lib, supportedGhcVersions ? [ "884" "8104" "8106" ], stdenv, haskellPackages
 , haskell }:
 #
 # The recommended way to override this package is
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 8bea40efe64..f1b55029c78 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -75,6 +75,20 @@ in {
       buildLlvmPackages = buildPackages.llvmPackages_9;
       llvmPackages = pkgs.llvmPackages_9;
     };
+    ghc8106 = callPackage ../development/compilers/ghc/8.10.6.nix {
+      # aarch64 ghc865Binary gets SEGVs due to haskell#15449 or similar
+      bootPkgs = if stdenv.isAarch64 || stdenv.isAarch32 then
+          packages.ghc8102BinaryMinimal
+        else
+          packages.ghc865Binary;
+      inherit (buildPackages.python3Packages) sphinx;
+      # Need to use apple's patched xattr until
+      # https://github.com/xattr/xattr/issues/44 and
+      # https://github.com/xattr/xattr/issues/55 are solved.
+      inherit (buildPackages.darwin) xattr;
+      buildLlvmPackages = buildPackages.llvmPackages_9;
+      llvmPackages = pkgs.llvmPackages_9;
+    };
     ghc901 = callPackage ../development/compilers/ghc/9.0.1.nix {
       # aarch64 ghc8102Binary exceeds max output size on hydra
       bootPkgs = if stdenv.isAarch64 || stdenv.isAarch32 then
@@ -148,6 +162,11 @@ in {
       ghc = bh.compiler.ghc8104;
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-8.10.x.nix { };
     };
+    ghc8106 = callPackage ../development/haskell-modules {
+      buildHaskellPackages = bh.packages.ghc8106;
+      ghc = bh.compiler.ghc8106;
+      compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-8.10.x.nix { };
+    };
     ghc901 = callPackage ../development/haskell-modules {
       buildHaskellPackages = bh.packages.ghc901;
       ghc = bh.compiler.ghc901;
diff --git a/pkgs/top-level/release-haskell.nix b/pkgs/top-level/release-haskell.nix
index 38f5e2a4156..57632dd74e6 100644
--- a/pkgs/top-level/release-haskell.nix
+++ b/pkgs/top-level/release-haskell.nix
@@ -47,6 +47,7 @@ let
   all = with compilerNames; [
     ghc884
     ghc8104
+    ghc8106
     ghc901
   ];
 
@@ -206,11 +207,11 @@ let
       # package sets (like Cabal, jailbreak-cabal) are
       # working as expected.
       cabal-install = all;
-      Cabal_3_4_0_0 = with compilerNames; [ ghc884 ghc8104 ];
+      Cabal_3_6_0_0 = with compilerNames; [ ghc884 ghc8104 ghc8106 ];
       funcmp = all;
       # Doesn't currently work on ghc-9.0:
       # https://github.com/haskell/haskell-language-server/issues/297
-      haskell-language-server = with compilerNames; [ ghc884 ghc8104 ];
+      haskell-language-server = with compilerNames; [ ghc884 ghc8104 ghc8106 ];
       hoogle = all;
       hsdns = all;
       jailbreak-cabal = all;