diff --git a/pkgs/development/compilers/ghc/8.10.7.nix b/pkgs/development/compilers/ghc/8.10.7.nix
index cf867408dd315..c8669a2761f82 100644
--- a/pkgs/development/compilers/ghc/8.10.7.nix
+++ b/pkgs/development/compilers/ghc/8.10.7.nix
@@ -131,23 +131,44 @@ let
 
   targetCC = builtins.head toolsForTarget;
 
-  # Sometimes we have to dispatch between the bintools wrapper and the unwrapped
-  # derivation for certain tools depending on the platform.
-  bintoolsFor = {
-    # GHC needs install_name_tool on all darwin platforms. On aarch64-darwin it is
-    # part of the bintools wrapper (due to codesigning requirements), but not on
-    # x86_64-darwin.
-    install_name_tool =
-      if stdenv.targetPlatform.isAarch64
-      then targetCC.bintools
-      else targetCC.bintools.bintools;
-    # Same goes for strip.
-    strip =
-      # TODO(@sternenseemann): also use wrapper if linker == "bfd" or "gold"
-      if stdenv.targetPlatform.isAarch64 && stdenv.targetPlatform.isDarwin
-      then targetCC.bintools
-      else targetCC.bintools.bintools;
-  };
+  # toolPath calculates the absolute path to the name tool associated with a
+  # given `stdenv.cc` derivation, i.e. it picks the correct derivation to take
+  # the tool from (cc, cc.bintools, cc.bintools.bintools) and adds the correct
+  # subpath of the tool.
+  toolPath = name: cc:
+    let
+      tools = {
+        "cc" = cc;
+        "c++" = cc;
+        as = cc.bintools.bintools;
+
+        ar = cc.bintools.bintools;
+        ranlib = cc.bintools.bintools;
+        nm = cc.bintools.bintools;
+        readelf = cc.bintools.bintools;
+
+        ld = cc.bintools;
+        "ld.gold" = cc.bintools;
+
+        otool = cc.bintools.bintools;
+
+        # GHC needs install_name_tool on all darwin platforms. On aarch64-darwin it is
+        # part of the bintools wrapper (due to codesigning requirements), but not on
+        # x86_64-darwin. We decide based on target platform to have consistent tools
+        # across all GHC stages.
+        install_name_tool =
+          if stdenv.targetPlatform.isAarch64
+          then cc.bintools
+          else cc.bintools.bintools;
+        # Same goes for strip.
+        strip =
+          # TODO(@sternenseemann): also use wrapper if linker == "bfd" or "gold"
+          if stdenv.targetPlatform.isAarch64 && stdenv.targetPlatform.isDarwin
+          then cc.bintools
+          else cc.bintools.bintools;
+      }.${name};
+    in
+    "${tools}/bin/${tools.targetPrefix}${name}";
 
   # Use gold either following the default, or to avoid the BFD linker due to some bugs / perf issues.
   # But we cannot avoid BFD when using musl libc due to https://sourceware.org/bugzilla/show_bug.cgi?id=23856
@@ -255,19 +276,19 @@ stdenv.mkDerivation (rec {
     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}c++"
+    export CC="${toolPath "cc" targetCC}"
+    export CXX="${toolPath "c++" targetCC}"
     # 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/${targetCC.bintools.targetPrefix}readelf"
-    export STRIP="${bintoolsFor.strip}/bin/${bintoolsFor.strip.targetPrefix}strip"
+    export LD="${toolPath "ld${lib.optionalString useLdGold ".gold"}" targetCC}"
+    export AS="${toolPath "as" targetCC}"
+    export AR="${toolPath "ar" targetCC}"
+    export NM="${toolPath "nm" targetCC}"
+    export RANLIB="${toolPath "ranlib" targetCC}"
+    export READELF="${toolPath "readelf" targetCC}"
+    export STRIP="${toolPath "strip" targetCC}"
   '' + lib.optionalString (stdenv.targetPlatform.linker == "cctools") ''
-    export OTOOL="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}otool"
-    export INSTALL_NAME_TOOL="${bintoolsFor.install_name_tool}/bin/${bintoolsFor.install_name_tool.targetPrefix}install_name_tool"
+    export OTOOL="${toolPath "otool" targetCC}"
+    export INSTALL_NAME_TOOL="${toolPath "install_name_tool" targetCC}"
   '' + lib.optionalString useLLVM ''
     export LLC="${lib.getBin buildTargetLlvmPackages.llvm}/bin/llc"
     export OPT="${lib.getBin buildTargetLlvmPackages.llvm}/bin/opt"
diff --git a/pkgs/development/compilers/ghc/9.4.8.fixme.nix b/pkgs/development/compilers/ghc/9.4.8.nix
similarity index 100%
rename from pkgs/development/compilers/ghc/9.4.8.fixme.nix
rename to pkgs/development/compilers/ghc/9.4.8.nix
diff --git a/pkgs/development/compilers/ghc/common-hadrian.nix b/pkgs/development/compilers/ghc/common-hadrian.nix
index fcb5d43de7c0d..b5fef30332f7f 100644
--- a/pkgs/development/compilers/ghc/common-hadrian.nix
+++ b/pkgs/development/compilers/ghc/common-hadrian.nix
@@ -13,6 +13,7 @@
 , pkgsBuildTarget
 , pkgsHostTarget
 , targetPackages
+, fetchpatch
 
 # build-tools
 , bootPkgs
@@ -170,6 +171,13 @@
            then ./docs-sphinx-7-ghc98.patch
            else ./docs-sphinx-7.patch )
         ]
+        ++ lib.optionals (lib.versionAtLeast version "9.6" && lib.versionOlder version "9.8") [
+          (fetchpatch {
+            name = "fix-fully_static.patch";
+            url = "https://gitlab.haskell.org/ghc/ghc/-/commit/1bb24432ff77e11a0340a7d8586e151e15bba2a1.diff";
+            hash = "sha256-MpvTmFFsNiPDoOp9BhZyWeapeibQ77zgEV+xzZ1UAXs=";
+          })
+        ]
         ++ lib.optionals (stdenv.targetPlatform.isDarwin && stdenv.targetPlatform.isAarch64) [
           # Prevent the paths module from emitting symbols that we don't use
           # when building with separate outputs.
@@ -259,23 +267,44 @@ let
 
   targetCC = builtins.head toolsForTarget;
 
-  # Sometimes we have to dispatch between the bintools wrapper and the unwrapped
-  # derivation for certain tools depending on the platform.
-  bintoolsFor = {
-    # GHC needs install_name_tool on all darwin platforms. On aarch64-darwin it is
-    # part of the bintools wrapper (due to codesigning requirements), but not on
-    # x86_64-darwin.
-    install_name_tool =
-      if stdenv.targetPlatform.isAarch64
-      then targetCC.bintools
-      else targetCC.bintools.bintools;
-    # Same goes for strip.
-    strip =
-      # TODO(@sternenseemann): also use wrapper if linker == "bfd" or "gold"
-      if stdenv.targetPlatform.isAarch64 && stdenv.targetPlatform.isDarwin
-      then targetCC.bintools
-      else targetCC.bintools.bintools;
-  };
+  # toolPath calculates the absolute path to the name tool associated with a
+  # given `stdenv.cc` derivation, i.e. it picks the correct derivation to take
+  # the tool from (cc, cc.bintools, cc.bintools.bintools) and adds the correct
+  # subpath of the tool.
+  toolPath = name: cc:
+    let
+      tools = {
+        "cc" = cc;
+        "c++" = cc;
+        as = cc.bintools.bintools;
+
+        ar = cc.bintools.bintools;
+        ranlib = cc.bintools.bintools;
+        nm = cc.bintools.bintools;
+        readelf = cc.bintools.bintools;
+
+        ld = cc.bintools;
+        "ld.gold" = cc.bintools;
+
+        otool = cc.bintools.bintools;
+
+        # GHC needs install_name_tool on all darwin platforms. On aarch64-darwin it is
+        # part of the bintools wrapper (due to codesigning requirements), but not on
+        # x86_64-darwin. We decide based on target platform to have consistent tools
+        # across all GHC stages.
+        install_name_tool =
+          if stdenv.targetPlatform.isAarch64
+          then cc.bintools
+          else cc.bintools.bintools;
+        # Same goes for strip.
+        strip =
+          # TODO(@sternenseemann): also use wrapper if linker == "bfd" or "gold"
+          if stdenv.targetPlatform.isAarch64 && stdenv.targetPlatform.isDarwin
+          then cc.bintools
+          else cc.bintools.bintools;
+      }.${name};
+    in
+    "${tools}/bin/${tools.targetPrefix}${name}";
 
   # Use gold either following the default, or to avoid the BFD linker due to some bugs / perf issues.
   # But we cannot avoid BFD when using musl libc due to https://sourceware.org/bugzilla/show_bug.cgi?id=23856
@@ -321,19 +350,19 @@ stdenv.mkDerivation ({
     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}c++"
+    export CC="${toolPath "cc" targetCC}"
+    export CXX="${toolPath "c++" targetCC}"
     # 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/${targetCC.bintools.targetPrefix}readelf"
-    export STRIP="${bintoolsFor.strip}/bin/${bintoolsFor.strip.targetPrefix}strip"
+    export LD="${toolPath "ld${lib.optionalString useLdGold ".gold"}" targetCC}"
+    export AS="${toolPath "as" targetCC}"
+    export AR="${toolPath "ar" targetCC}"
+    export NM="${toolPath "nm" targetCC}"
+    export RANLIB="${toolPath "ranlib" targetCC}"
+    export READELF="${toolPath "readelf" targetCC}"
+    export STRIP="${toolPath "strip" targetCC}"
   '' + lib.optionalString (stdenv.targetPlatform.linker == "cctools") ''
-    export OTOOL="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}otool"
-    export INSTALL_NAME_TOOL="${bintoolsFor.install_name_tool}/bin/${bintoolsFor.install_name_tool.targetPrefix}install_name_tool"
+    export OTOOL="${toolPath "otool" targetCC}"
+    export INSTALL_NAME_TOOL="${toolPath "install_name_tool" targetCC}"
   '' + lib.optionalString useLLVM ''
     export LLC="${lib.getBin buildTargetLlvmPackages.llvm}/bin/llc"
     export OPT="${lib.getBin buildTargetLlvmPackages.llvm}/bin/opt"
@@ -555,10 +584,6 @@ stdenv.mkDerivation ({
     ] ++ lib.teams.haskell.members;
     timeout = 24 * 3600;
     inherit (ghc.meta) license platforms;
-    # https://github.com/NixOS/nixpkgs/issues/208959
-    broken =
-      (lib.versionAtLeast version "9.6" && lib.versionOlder version "9.8")
-      && stdenv.targetPlatform.isStatic;
   };
 
   dontStrip = targetPlatform.useAndroidPrebuilt || targetPlatform.isWasm;
diff --git a/pkgs/development/compilers/ghc/common-make-native-bignum.nix b/pkgs/development/compilers/ghc/common-make-native-bignum.nix
index 6142c76f64078..79fced444f562 100644
--- a/pkgs/development/compilers/ghc/common-make-native-bignum.nix
+++ b/pkgs/development/compilers/ghc/common-make-native-bignum.nix
@@ -136,23 +136,44 @@ let
 
   targetCC = builtins.head toolsForTarget;
 
-  # Sometimes we have to dispatch between the bintools wrapper and the unwrapped
-  # derivation for certain tools depending on the platform.
-  bintoolsFor = {
-    # GHC needs install_name_tool on all darwin platforms. On aarch64-darwin it is
-    # part of the bintools wrapper (due to codesigning requirements), but not on
-    # x86_64-darwin.
-    install_name_tool =
-      if stdenv.targetPlatform.isAarch64
-      then targetCC.bintools
-      else targetCC.bintools.bintools;
-    # Same goes for strip.
-    strip =
-      # TODO(@sternenseemann): also use wrapper if linker == "bfd" or "gold"
-      if stdenv.targetPlatform.isAarch64 && stdenv.targetPlatform.isDarwin
-      then targetCC.bintools
-      else targetCC.bintools.bintools;
-  };
+  # toolPath calculates the absolute path to the name tool associated with a
+  # given `stdenv.cc` derivation, i.e. it picks the correct derivation to take
+  # the tool from (cc, cc.bintools, cc.bintools.bintools) and adds the correct
+  # subpath of the tool.
+  toolPath = name: cc:
+    let
+      tools = {
+        "cc" = cc;
+        "c++" = cc;
+        as = cc.bintools.bintools;
+
+        ar = cc.bintools.bintools;
+        ranlib = cc.bintools.bintools;
+        nm = cc.bintools.bintools;
+        readelf = cc.bintools.bintools;
+
+        ld = cc.bintools;
+        "ld.gold" = cc.bintools;
+
+        otool = cc.bintools.bintools;
+
+        # GHC needs install_name_tool on all darwin platforms. On aarch64-darwin it is
+        # part of the bintools wrapper (due to codesigning requirements), but not on
+        # x86_64-darwin. We decide based on target platform to have consistent tools
+        # across all GHC stages.
+        install_name_tool =
+          if stdenv.targetPlatform.isAarch64
+          then cc.bintools
+          else cc.bintools.bintools;
+        # Same goes for strip.
+        strip =
+          # TODO(@sternenseemann): also use wrapper if linker == "bfd" or "gold"
+          if stdenv.targetPlatform.isAarch64 && stdenv.targetPlatform.isDarwin
+          then cc.bintools
+          else cc.bintools.bintools;
+      }.${name};
+    in
+    "${tools}/bin/${tools.targetPrefix}${name}";
 
   # Use gold either following the default, or to avoid the BFD linker due to some bugs / perf issues.
   # But we cannot avoid BFD when using musl libc due to https://sourceware.org/bugzilla/show_bug.cgi?id=23856
@@ -265,19 +286,19 @@ stdenv.mkDerivation (rec {
     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}c++"
+    export CC="${toolPath "cc" targetCC}"
+    export CXX="${toolPath "c++" targetCC}"
     # 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/${targetCC.bintools.targetPrefix}readelf"
-    export STRIP="${bintoolsFor.strip}/bin/${bintoolsFor.strip.targetPrefix}strip"
+    export LD="${toolPath "ld${lib.optionalString useLdGold ".gold"}" targetCC}"
+    export AS="${toolPath "as" targetCC}"
+    export AR="${toolPath "ar" targetCC}"
+    export NM="${toolPath "nm" targetCC}"
+    export RANLIB="${toolPath "ranlib" targetCC}"
+    export READELF="${toolPath "readelf" targetCC}"
+    export STRIP="${toolPath "strip" targetCC}"
   '' + lib.optionalString (stdenv.targetPlatform.linker == "cctools") ''
-    export OTOOL="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}otool"
-    export INSTALL_NAME_TOOL="${bintoolsFor.install_name_tool}/bin/${bintoolsFor.install_name_tool.targetPrefix}install_name_tool"
+    export OTOOL="${toolPath "otool" targetCC}"
+    export INSTALL_NAME_TOOL="${toolPath "install_name_tool" targetCC}"
   '' + lib.optionalString useLLVM ''
     export LLC="${lib.getBin buildTargetLlvmPackages.llvm}/bin/llc"
     export OPT="${lib.getBin buildTargetLlvmPackages.llvm}/bin/opt"
diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index cefce06d8431d..e1efb46422a37 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -234,10 +234,16 @@ self: super: {
   fused-effects-random = doJailbreak super.fused-effects-random;
   fused-effects-readline = doJailbreak super.fused-effects-readline;
 
-  # fix tests failure for base≥4.15 (https://github.com/kim/leveldb-haskell/pull/41)
-  leveldb-haskell = appendPatch (fetchpatch {
-    url = "https://github.com/kim/leveldb-haskell/commit/f5249081f589233890ddb1945ec548ca9fb717cf.patch";
-    sha256 = "14gllipl28lqry73c5dnclsskzk1bsrrgazibl4lkl8z98j2csjb";
+  leveldb-haskell = overrideCabal (drv: {
+    version = "2024-05-05-unstable";
+    # Fix tests on mtl ≥ 2.3
+    # https://github.com/kim/leveldb-haskell/pull/42
+    src = pkgs.fetchFromGitHub {
+      owner = "kim";
+      repo = "leveldb-haskell";
+      rev = "3a505f3a7de0f5d14463538d7c2c9a9881a60eb9";
+      sha256 = "sha256-okUn5ZuWcj8vPr0GWXvO1LygNCrDfttkDaUoOt+FLA0=";
+    };
   }) super.leveldb-haskell;
 
   # Arion's test suite needs a Nixpkgs, which is cumbersome to do from Nixpkgs
@@ -268,12 +274,6 @@ self: super: {
     sha256 = "1c7knpvxr7p8c159jkyk6w29653z5yzgjjqj11130bbb8mk9qhq7";
   }) super.c2hsc;
 
-  # Some Hackage packages reference this attribute, which exists only in the
-  # GHCJS package set. We provide a dummy version here to fix potential
-  # evaluation errors.
-  ghcjs-base = null;
-  ghcjs-prim = null;
-
   ghc-debug-client = doJailbreak super.ghc-debug-client;
 
   # Test failure.  Tests also disabled in Stackage:
@@ -971,12 +971,12 @@ self: super: {
   # See https://github.com/valderman/selda/issues/187
   inherit (let
     mkSeldaPackage = name: overrideCabal (drv: {
-      version = "2023-02-05-unstable";
+      version = "2024-05-05-unstable";
       src = pkgs.fetchFromGitHub {
         owner = "valderman";
         repo = "selda";
-        rev = "ab9619db13b93867d1a244441bb4de03d3e1dadb";
-        hash = "sha256-P0nqAYzbeTyEEgzMij/3mKcs++/p/Wgc7Y6bDudXt2U=";
+        rev = "50c3ba5c5da72bb758a4112363ba2fe1c0e968ea";
+        hash = "sha256-LEAJsSsDL0mmVHntnI16fH8m5DmePfcU0hFw9ErqTgQ=";
       } + "/${name}";
     }) super.${name};
   in
@@ -1367,18 +1367,17 @@ self: super: {
     '';
   }) super.PortMidi;
 
-  # Fix for base >= 4.11
   scat = overrideCabal (drv: {
     patches = [
-      # Fix build with base >= 4.11
+      # Fix build with base >= 4.11 (https://github.com/redelmann/scat/pull/6)
       (fetchpatch {
         url = "https://github.com/redelmann/scat/commit/429f22944b7634b8789cb3805292bcc2b23e3e9f.diff";
         hash = "sha256-FLr1KfBaSYzI6MiZIBY1CkgAb5sThvvgjrSAN8EV0h4=";
       })
-      # Fix build with vector >= 0.13
+      # Fix build with vector >= 0.13, mtl >= 2.3 (https://github.com/redelmann/scat/pull/8)
       (fetchpatch {
-        url = "https://github.com/redelmann/scat/commit/e21cc9c17b5b605b5bc0aacad66d44bbe0beb8c4.diff";
-        hash = "sha256-MifHb2EKZx8skOcs+2t54CzxAS4PaEC0OTEfq4yVXzk=";
+        url = "https://github.com/redelmann/scat/compare/e8e064f7e6a152fe25a6ccd743573a16974239d0..c6a3636548d628f32d8edc73a333188ce24141a7.patch";
+        hash = "sha256-BU4MUn/TnZHpZBlX1vDHE7QZva5yhlLTb8zwpx7UScI";
       })
     ];
   }) super.scat;
@@ -1561,13 +1560,36 @@ self: super: {
       doJailbreak
     ];
 
-  jsaddle-dom = overrideCabal (old: {
-    postPatch = old.postPatch or "" + ''
-      rm Setup.hs
-    '';
-  }) super.jsaddle-dom;
-  jsaddle-hello = doJailbreak super.jsaddle-hello;
-  ghcjs-dom-hello = doJailbreak super.ghcjs-dom-hello;
+  ghcjs-dom-hello = appendPatches [
+    (fetchpatch {
+      url = "https://github.com/ghcjs/ghcjs-dom-hello/commit/53991df6a4eba9f1e9633eb22f6a0486a79491c3.patch";
+      sha256 = "sha256-HQeUgjvzYyY14+CDYiMahAMn7fBcy2d7p8/kqGq+rnI=";
+    })
+    (fetchpatch {
+      url = "https://github.com/ghcjs/ghcjs-dom-hello/commit/d766d937121f7ea5c4c154bd533a1eae47f531c9.patch";
+      sha256 = "sha256-QTkH+L+JMwGyuoqzHBnrokT7KzpHC4YiAWoeiaFBLUw=";
+    })
+    (fetchpatch {
+      url = "https://github.com/ghcjs/ghcjs-dom-hello/commit/831464d995f4033c9aa84f9ed9fb37a268f34d4e.patch";
+      sha256 = "sha256-hQMy+78geTuxd3kbdiyYqoAFrauu90HbpPi0EEKjMzM=";
+    })
+   ] super.ghcjs-dom-hello;
+
+  # Needs https://github.com/ghcjs/jsaddle-hello/pull/5 and hackage release
+  jsaddle-hello = appendPatches [
+    (fetchpatch {
+      url = "https://github.com/ghcjs/jsaddle-hello/commit/c4de837675117b821c50a5079d20d84ec16ff26a.patch";
+      sha256 = "sha256-NsM7QqNLt5V8i5bveYgMrawGnZVsIuAoJfBF75jBwV0=";
+    })
+    (fetchpatch {
+      url = "https://github.com/ghcjs/jsaddle-hello/commit/5c437363833684ea951ec74a0d0fdf5b6fbaca85.patch";
+      sha256 = "sha256-CUyZsts0FAQ3c8Z+zfvwbmlAJCMcidV80n8dA/SoRls=";
+    })
+    (fetchpatch {
+      url = "https://github.com/ghcjs/jsaddle-hello/commit/e2da9e266fbfa8f7fcf3009ab6cfbf825a8bcf7a.patch";
+      sha256 = "sha256-WL0CcnlMt6KI7MOZMg74fNN/I4gYSO3n+GiaXB2BOP0=";
+    })
+  ] super.jsaddle-hello;
 
   # Too strict upper bounds on text
   lsql-csv = doJailbreak super.lsql-csv;
@@ -1691,6 +1713,14 @@ self: super: {
   # Test suite fails to compile https://github.com/agrafix/Spock/issues/177
   Spock = dontCheck super.Spock;
 
+  Spock-core = appendPatches [
+    (fetchpatch {
+      url = "https://github.com/agrafix/Spock/commit/d0b51fa60a83bfa5c1b5fc8fced18001e7321701.patch";
+      sha256 = "sha256-l9voiczOOdYVBP/BNEUvqARb21t0Rp2kpsNbRFUWSLg=";
+      stripLen = 1;
+    })
+  ] (doJailbreak super.Spock-core);
+
   # https://github.com/strake/filtrable.hs/issues/6
   filtrable = doJailbreak super.filtrable;
 
@@ -2647,18 +2677,6 @@ self: super: {
   # https://github.com/ngless-toolkit/ngless/issues/152
   NGLess = dontCheck super.NGLess;
 
-  # Raise version bounds: https://github.com/well-typed/lens-sop/pull/4
-  lens-sop = appendPatches [
-    (fetchpatch {
-      url = "https://github.com/well-typed/lens-sop/commit/d8657f27c12191a7c0a91701c0fcd9a590e0090e.patch";
-      sha256 = "sha256-9ODfbOb6Bs3EVTY9b7cUvkNmqzzZPWUmgmlAneaN3Tw=";
-    })
-    (fetchpatch {
-      url = "https://github.com/well-typed/lens-sop/commit/b7ecffdeb836d19373871659e2f8cd24da6f7312.patch";
-      sha256 = "sha256-hDUQ2fW9Qyom65YvtW9bsbz7XtueRmdsAbAB42D+gu4=";
-    })
-  ] super.lens-sop;
-
   # Raise version bounds: https://github.com/kosmikus/records-sop/pull/15
   records-sop = appendPatch (fetchpatch {
     url = "https://github.com/kosmikus/records-sop/commit/fb149f453a816ff14d0cb20b3ea56b80ff49d9f1.patch";
diff --git a/pkgs/development/haskell-modules/configuration-darwin.nix b/pkgs/development/haskell-modules/configuration-darwin.nix
index 5985d29f8b591..16e5d2613fb2e 100644
--- a/pkgs/development/haskell-modules/configuration-darwin.nix
+++ b/pkgs/development/haskell-modules/configuration-darwin.nix
@@ -323,6 +323,20 @@ self: super: ({
   # Tests fail on macOS https://github.com/mrkkrp/zip/issues/112
   zip = dontCheck super.zip;
 
+  warp = super.warp.overrideAttrs (drv: {
+    __darwinAllowLocalNetworking = true;
+  });
+
+  ghcjs-dom-hello = overrideCabal (drv: {
+    libraryHaskellDepends = with self; [ jsaddle jsaddle-warp ];
+    executableHaskellDepends = with self; [ ghcjs-dom jsaddle-wkwebview ];
+  }) super.ghcjs-dom-hello;
+
+  jsaddle-hello = overrideCabal (drv: {
+    libraryHaskellDepends = with self; [ jsaddle lens ];
+    executableHaskellDepends = with self; [ jsaddle-warp jsaddle-wkwebview ];
+  }) super.jsaddle-hello;
+
   jsaddle-wkwebview = overrideCabal (drv: {
     libraryFrameworkDepends = with pkgs.buildPackages.darwin.apple_sdk.frameworks; [ Cocoa WebKit ];
     libraryHaskellDepends = with self; [ aeson data-default jsaddle ]; # cabal2nix doesn't add darwin-only deps
diff --git a/pkgs/development/haskell-modules/configuration-ghc-9.8.x.nix b/pkgs/development/haskell-modules/configuration-ghc-9.8.x.nix
index bf05ee9ef3ff7..c8750bc22631d 100644
--- a/pkgs/development/haskell-modules/configuration-ghc-9.8.x.nix
+++ b/pkgs/development/haskell-modules/configuration-ghc-9.8.x.nix
@@ -68,6 +68,7 @@ self: super: {
   stylish-haskell = self.stylish-haskell_0_14_6_0;
   hlint = self.hlint_3_8;
   ghc-syntax-highlighter = self.ghc-syntax-highlighter_0_0_11_0;
+  websockets = self.websockets_0_13_0_0;
 
   # A given major version of ghc-exactprint only supports one version of GHC.
   ghc-exactprint = self.ghc-exactprint_1_8_0_0;
diff --git a/pkgs/development/haskell-modules/configuration-ghcjs.nix b/pkgs/development/haskell-modules/configuration-ghcjs-8.x.nix
similarity index 97%
rename from pkgs/development/haskell-modules/configuration-ghcjs.nix
rename to pkgs/development/haskell-modules/configuration-ghcjs-8.x.nix
index c74fdb09232c2..3f6e399f795b8 100644
--- a/pkgs/development/haskell-modules/configuration-ghcjs.nix
+++ b/pkgs/development/haskell-modules/configuration-ghcjs-8.x.nix
@@ -24,6 +24,11 @@ self: super:
     aeson = self.aeson_1_5_6_0;
   });
 
+  # Included in ghcjs itself
+  ghcjs-prim = null;
+
+  ghcjs-websockets = markUnbroken super.ghcjs-websockets;
+
   # GHCJS does not ship with the same core packages as GHC.
   # https://github.com/ghcjs/ghcjs/issues/676
   stm = doJailbreak self.stm_2_5_3_1;
diff --git a/pkgs/development/haskell-modules/configuration-ghcjs-9.x.nix b/pkgs/development/haskell-modules/configuration-ghcjs-9.x.nix
new file mode 100644
index 0000000000000..3b1f8dc4558e1
--- /dev/null
+++ b/pkgs/development/haskell-modules/configuration-ghcjs-9.x.nix
@@ -0,0 +1,22 @@
+{ pkgs, haskellLib }:
+
+with haskellLib;
+
+# cabal2nix doesn't properly add dependencies conditional on arch(javascript)
+(self: super: {
+  ghcjs-base = addBuildDepends (with self; [
+    aeson
+    attoparsec
+    dlist
+    hashable
+    primitive
+    scientific
+    unordered-containers
+    vector
+  ]) super.ghcjs-base;
+
+  ghcjs-dom = addBuildDepend self.ghcjs-dom-javascript super.ghcjs-dom;
+  ghcjs-dom-javascript = addBuildDepend self.ghcjs-base super.ghcjs-dom-javascript;
+  jsaddle = addBuildDepend self.ghcjs-base super.jsaddle;
+  jsaddle-dom = addBuildDepend self.ghcjs-base super.jsaddle-dom;
+})
diff --git a/pkgs/development/haskell-modules/configuration-hackage2nix/broken.yaml b/pkgs/development/haskell-modules/configuration-hackage2nix/broken.yaml
index 7e743d3eacdf9..ebc065df7ef47 100644
--- a/pkgs/development/haskell-modules/configuration-hackage2nix/broken.yaml
+++ b/pkgs/development/haskell-modules/configuration-hackage2nix/broken.yaml
@@ -1995,11 +1995,11 @@ broken-packages:
   - ghc-internal # failure in job https://hydra.nixos.org/build/260723678 at 2024-05-25
   - ghcitui # failure in job https://hydra.nixos.org/build/252737339 at 2024-03-16
   - ghcjs-base-stub # timeout
-  - ghcjs-dom-javascript # failure in job https://hydra.nixos.org/build/255688382 at 2024-04-16
   - ghcjs-dom-jsffi # failure in job https://hydra.nixos.org/build/233215225 at 2023-09-02
   - ghcjs-fetch # timeout
   - ghcjs-promise # failure in job https://hydra.nixos.org/build/233243985 at 2023-09-02
   - ghcjs-xhr # failure in job https://hydra.nixos.org/build/233235693 at 2023-09-02
+  - ghcjs-websockets # Does not work on the js backend added in 9.6+, only on ghcjs, where we markUnbroken
   - ghc-justdoit # failure in job https://hydra.nixos.org/build/233221884 at 2023-09-02
   - ghclive # failure in job https://hydra.nixos.org/build/233231592 at 2023-09-02
   - ghc-man-completion # failure in job https://hydra.nixos.org/build/233245740 at 2023-09-02
@@ -2609,7 +2609,6 @@ broken-packages:
   - hledger-chart # failure in job https://hydra.nixos.org/build/233205387 at 2023-09-02
   - hledger-diff # failure in job https://hydra.nixos.org/build/233199639 at 2023-09-02
   - hledger-flow # failure in job https://hydra.nixos.org/build/233252169 at 2023-09-02
-  - hledger-iadd # failure in updateAutotoolsGnuConfigScriptsPhase in job https://hydra.nixos.org/build/238288021 at 2023-10-21
   - hledger-irr # failure in job https://hydra.nixos.org/build/233230276 at 2023-09-02
   - hledger-makeitso # failure in job https://hydra.nixos.org/build/233213046 at 2023-09-02
   - hledger-vty # failure in job https://hydra.nixos.org/build/233191782 at 2023-09-02
@@ -2897,7 +2896,6 @@ broken-packages:
   - HTicTacToe # failure in job https://hydra.nixos.org/build/233235397 at 2023-09-02
   - htiled # failure in job https://hydra.nixos.org/build/233219305 at 2023-09-02
   - htlset # failure in job https://hydra.nixos.org/build/233203886 at 2023-09-02
-  - html-parse # failure in job https://hydra.nixos.org/build/233241759 at 2023-09-02
   - html-rules # failure in job https://hydra.nixos.org/build/233200615 at 2023-09-02
   - html-tokenizer # failure in job https://hydra.nixos.org/build/233243581 at 2023-09-02
   - htoml # failure in job https://hydra.nixos.org/build/233246670 at 2023-09-02
@@ -3436,7 +3434,6 @@ broken-packages:
   - lens-process # failure in job https://hydra.nixos.org/build/233242948 at 2023-09-02
   - lensref # failure in job https://hydra.nixos.org/build/233205479 at 2023-09-02
   - lens-simple # failure in job https://hydra.nixos.org/build/233245452 at 2023-09-02
-  - lens-sop # failure in job https://hydra.nixos.org/build/259961739 at 2024-05-19
   - lens-tell # failure in job https://hydra.nixos.org/build/233234619 at 2023-09-02
   - lens-text-encoding # failure in job https://hydra.nixos.org/build/233222713 at 2023-09-02
   - lens-th-rewrite # failure in job https://hydra.nixos.org/build/233201025 at 2023-09-02
@@ -3448,7 +3445,6 @@ broken-packages:
   - lenz-template # failure in job https://hydra.nixos.org/build/233206822 at 2023-09-02
   - less-arbitrary # failure in job https://hydra.nixos.org/build/233231412 at 2023-09-02
   - Level0 # failure in job https://hydra.nixos.org/build/233220758 at 2023-09-02
-  - leveldb-haskell # failure in job https://hydra.nixos.org/build/252739424 at 2024-03-16
   - level-monad # failure in job https://hydra.nixos.org/build/233257036 at 2023-09-02
   - levmar # failure in job https://hydra.nixos.org/build/233254731 at 2023-09-02
   - lfst # failure in job https://hydra.nixos.org/build/233240622 at 2023-09-02
@@ -4813,7 +4809,6 @@ broken-packages:
   - pusher-ws # failure in job https://hydra.nixos.org/build/233204133 at 2023-09-02
   - pushme # failure in job https://hydra.nixos.org/build/233212481 at 2023-09-02
   - push-notifications # failure in job https://hydra.nixos.org/build/233199364 at 2023-09-02
-  - push-notify-apn # failure in job https://hydra.nixos.org/build/260189652 at 2024-05-19
   - pushover # failure in job https://hydra.nixos.org/build/252739908 at 2024-03-16
   - putlenses # failure in job https://hydra.nixos.org/build/233197372 at 2023-09-02
   - puzzle-draw # failure in job https://hydra.nixos.org/build/233204953 at 2023-09-02
@@ -5188,7 +5183,6 @@ broken-packages:
   - scale # failure in job https://hydra.nixos.org/build/233222189 at 2023-09-02
   - scaleimage # failure in job https://hydra.nixos.org/build/233240688 at 2023-09-02
   - scalendar # failure in job https://hydra.nixos.org/build/233206581 at 2023-09-02
-  - scat # failure in job https://hydra.nixos.org/build/252730427 at 2024-03-16
   - scc # failure in job https://hydra.nixos.org/build/233247446 at 2023-09-02
   - scgi # failure in job https://hydra.nixos.org/build/233247314 at 2023-09-02
   - schedevr # failure in job https://hydra.nixos.org/build/233240124 at 2023-09-02
@@ -5244,7 +5238,6 @@ broken-packages:
   - secure-sockets # failure in job https://hydra.nixos.org/build/233254170 at 2023-09-02
   - secureUDP # failure in job https://hydra.nixos.org/build/233215410 at 2023-09-02
   - SegmentTree # failure in job https://hydra.nixos.org/build/233216161 at 2023-09-02
-  - selda # failure in job https://hydra.nixos.org/build/252735635 at 2024-03-16
   - selda-postgresql # failure in job https://hydra.nixos.org/build/245539286 at 2024-01-02
   - selectors # failure in job https://hydra.nixos.org/build/233227433 at 2023-09-02
   - selenium # failure in job https://hydra.nixos.org/build/233214276 at 2023-09-02
@@ -5344,7 +5337,6 @@ broken-packages:
   - sessions # failure in job https://hydra.nixos.org/build/233214614 at 2023-09-02
   - sessiontypes # failure in job https://hydra.nixos.org/build/233224975 at 2023-09-02
   - setdown # failure in job https://hydra.nixos.org/build/241521053 at 2023-12-03
-  - set-extra # failure in job https://hydra.nixos.org/build/252738545 at 2024-03-16
   - setgame # failure in job https://hydra.nixos.org/build/233218664 at 2023-09-02
   - set-of # failure in job https://hydra.nixos.org/build/233202960 at 2023-09-02
   - setoid # failure in job https://hydra.nixos.org/build/233213744 at 2023-09-02
@@ -5607,7 +5599,6 @@ broken-packages:
   - splot # failure in job https://hydra.nixos.org/build/252715661 at 2024-03-16
   - Spock-api-ghcjs # failure in job https://hydra.nixos.org/build/233246163 at 2023-09-02
   - Spock-auth # failure in job https://hydra.nixos.org/build/233212125 at 2023-09-02
-  - Spock-core # failure in job https://hydra.nixos.org/build/252720122 at 2024-03-16
   - spoonutil # failure in job https://hydra.nixos.org/build/233257645 at 2023-09-02
   - spotify # failure in job https://hydra.nixos.org/build/233254990 at 2023-09-02
   - spoty # failure in job https://hydra.nixos.org/build/233233863 at 2023-09-02
diff --git a/pkgs/development/haskell-modules/configuration-hackage2nix/main.yaml b/pkgs/development/haskell-modules/configuration-hackage2nix/main.yaml
index 93eebf297e8e8..03dd4e728f4e4 100644
--- a/pkgs/development/haskell-modules/configuration-hackage2nix/main.yaml
+++ b/pkgs/development/haskell-modules/configuration-hackage2nix/main.yaml
@@ -152,6 +152,7 @@ package-maintainers:
     - ghcjs-dom
     - ghcjs-dom-hello
     - ghcjs-dom-javascript
+    - ghcjs-dom-jsaddle
     - haveibeenpwned
     - jsaddle
     - jsaddle-clib
@@ -649,6 +650,24 @@ package-maintainers:
     - nix-tree
   zowoq:
     - ShellCheck
+  mpscholten:
+    - ihp-hsx
+    - push-notify-apn
+    - hs-pkpass
+    - raven-haskell
+    - stripe-concepts
+    - stripe-signature
+    - http2-client
+    - zip
+    - currencies
+    - string-random
+    - inflections
+    - pcre-heavy
+    - mmark
+    - mmark-ext
+    - typerep-map
+    - minio-hs
+    - smtp-mail
 
 unsupported-platforms:
   Allure:                                       [ platforms.darwin ]
@@ -670,7 +689,6 @@ unsupported-platforms:
   freenect:                                     [ platforms.darwin ]
   FTGL:                                         [ platforms.darwin ]
   fuzzytime:                                    [ platforms.darwin ] # https://github.com/kamwitsta/fuzzytime/issues/2
-  ghcjs-dom-hello:                              [ platforms.darwin ]
   ghc-gc-hook:                                  [ platforms.darwin ] # requires C11 threads which Apple doesn't support
   gi-adwaita:                                   [ platforms.darwin ]
   gi-dbusmenugtk3:                              [ platforms.darwin ]
@@ -699,7 +717,6 @@ unsupported-platforms:
   intricacy:                                    [ platforms.darwin ] # depends on mesa
   iwlib:                                        [ platforms.darwin ]
   Jazzkell:                                     [ platforms.darwin ] # depends on Euterpea
-  jsaddle-hello:                                [ platforms.darwin ] # depends on jsaddle-webkit2gtk
   jsaddle-webkit2gtk:                           [ platforms.darwin ]
   Kulitta:                                      [ platforms.darwin ] # depends on Euterpea
   LambdaHack:                                   [ platforms.darwin ]
@@ -792,6 +809,8 @@ supported-platforms:
   geomancy:                                     [ platforms.x86 ] # x86 intrinsics
   geomancy-layout:                              [ platforms.x86 ] # x86 intrinsics
   gi-gtkosxapplication:                         [ platforms.darwin ]
+  ghcjs-base:                                   [ javascript-ghcjs ]
+  ghcjs-dom-javascript:                         [ javascript-ghcjs ]
   gtk-mac-integration:                          [ platforms.darwin ]
   gtk3-mac-integration:                         [ platforms.darwin ]
   halide-haskell:                               [ platforms.linux ]
diff --git a/pkgs/development/haskell-modules/configuration-hackage2nix/transitive-broken.yaml b/pkgs/development/haskell-modules/configuration-hackage2nix/transitive-broken.yaml
index b048efbfb5455..02e2d5954d20f 100644
--- a/pkgs/development/haskell-modules/configuration-hackage2nix/transitive-broken.yaml
+++ b/pkgs/development/haskell-modules/configuration-hackage2nix/transitive-broken.yaml
@@ -378,11 +378,6 @@ dont-distribute-packages:
  - SourceGraph
  - SpacePrivateers
  - SpinCounter
- - Spock
- - Spock-api-server
- - Spock-digestive
- - Spock-lucid
- - Spock-worker
  - StockholmAlignment
  - Strafunski-Sdf2Haskell
  - SybWidget
@@ -670,7 +665,6 @@ dont-distribute-packages:
  - bip32
  - birch-beer
  - bird
- - bisc
  - biscuit-servant
  - bishbosh
  - bit-array
@@ -2424,7 +2418,6 @@ dont-distribute-packages:
  - json-query
  - json-rpc-client
  - json-schema
- - json-sop
  - json-spec-elm
  - json-spec-elm-servant
  - json-spec-openapi
@@ -3575,8 +3568,6 @@ dont-distribute-packages:
  - secrm
  - sednaDBXML
  - seitz-symbol
- - selda-json
- - selda-sqlite
  - selenium-server
  - semantic-source
  - semantic-version
diff --git a/pkgs/development/haskell-modules/default.nix b/pkgs/development/haskell-modules/default.nix
index 3f8a0bb750c71..73ce1af7735a0 100644
--- a/pkgs/development/haskell-modules/default.nix
+++ b/pkgs/development/haskell-modules/default.nix
@@ -9,6 +9,7 @@
 , configurationNix ? import ./configuration-nix.nix
 , configurationArm ? import ./configuration-arm.nix
 , configurationDarwin ? import ./configuration-darwin.nix
+, configurationJS ? import ./configuration-ghcjs-9.x.nix
 }:
 
 let
@@ -26,7 +27,10 @@ let
     (configurationArm { inherit pkgs haskellLib; })
   ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     (configurationDarwin { inherit pkgs haskellLib; })
-  ];
+  ] ++ lib.optionals stdenv.hostPlatform.isGhcjs [
+    (configurationJS { inherit pkgs haskellLib; })
+  ]
+  ;
 
   extensions = lib.composeManyExtensions ([
     (nonHackagePackages { inherit pkgs haskellLib; })
diff --git a/pkgs/development/haskell-modules/generic-builder.nix b/pkgs/development/haskell-modules/generic-builder.nix
index 785ba249099bf..6c60efe1bce50 100644
--- a/pkgs/development/haskell-modules/generic-builder.nix
+++ b/pkgs/development/haskell-modules/generic-builder.nix
@@ -7,6 +7,13 @@
 let
   isCross = stdenv.buildPlatform != stdenv.hostPlatform;
 
+  # Note that ghc.isGhcjs != stdenv.hostPlatform.isGhcjs.
+  # ghc.isGhcjs implies that we are using ghcjs, a project separate from GHC.
+  # (mere) stdenv.hostPlatform.isGhcjs means that we are using GHC's JavaScript
+  # backend. The latter is a normal cross compilation backend and needs little
+  # special accommodation.
+  outputsJS = ghc.isGhcjs or false || stdenv.hostPlatform.isGhcjs;
+
   # Pass the "wrong" C compiler rather than none at all so packages that just
   # use the C preproccessor still work, see
   # https://github.com/haskell/cabal/issues/6466 for details.
@@ -19,15 +26,11 @@ let
     fetchurl removeReferencesTo
     pkg-config coreutils gnugrep glibcLocales
     emscripten;
+
 in
 
 { pname
-# Note that ghc.isGhcjs != stdenv.hostPlatform.isGhcjs.
-# ghc.isGhcjs implies that we are using ghcjs, a project separate from GHC.
-# (mere) stdenv.hostPlatform.isGhcjs means that we are using GHC's JavaScript
-# backend. The latter is a normal cross compilation backend and needs little
-# special accommodation.
-, dontStrip ? (ghc.isGhcjs or false || stdenv.hostPlatform.isGhcjs)
+, dontStrip ? outputsJS
 , version, revision ? null
 , sha256 ? null
 , src ? fetchurl { url = "mirror://hackage/${pname}-${version}.tar.gz"; inherit sha256; }
@@ -44,7 +47,7 @@ in
 , doHaddockQuickjump ? doHoogle
 , doInstallIntermediates ? false
 , editedCabalFile ? null
-, enableLibraryProfiling ? !(ghc.isGhcjs or false)
+, enableLibraryProfiling ? !outputsJS
 , enableExecutableProfiling ? false
 , profilingDetail ? "exported-functions"
 # TODO enable shared libs for cross-compiling
@@ -223,7 +226,7 @@ let
   ] ++ optional (allPkgconfigDepends != [])
     "--with-pkg-config=${pkg-config.targetPrefix}pkg-config";
 
-  parallelBuildingFlags = "-j$NIX_BUILD_CORES" + optionalString stdenv.isLinux " +RTS -A64M -RTS";
+  makeGhcOptions = opts: lib.concatStringsSep " " (map (opt: "--ghc-option=${opt}") opts);
 
   buildFlagsString = optionalString (buildFlags != []) (" " + concatStringsSep " " buildFlags);
 
@@ -241,8 +244,8 @@ let
     "--package-db=$packageConfDir"
     (optionalString (enableSharedExecutables && stdenv.isLinux) "--ghc-option=-optl=-Wl,-rpath=$out/${ghcLibdir}/${pname}-${version}")
     (optionalString (enableSharedExecutables && stdenv.isDarwin) "--ghc-option=-optl=-Wl,-headerpad_max_install_names")
-    (optionalString enableParallelBuilding "--ghc-options=${parallelBuildingFlags}")
-    (optionalString useCpphs "--with-cpphs=${cpphs}/bin/cpphs --ghc-options=-cpp --ghc-options=-pgmP${cpphs}/bin/cpphs --ghc-options=-optP--cpp")
+    (optionalString enableParallelBuilding (makeGhcOptions [ "-j$NIX_BUILD_CORES" "+RTS" "-A64M" "-RTS" ]))
+    (optionalString useCpphs ("--with-cpphs=${cpphs}/bin/cpphs " + (makeGhcOptions [ "-cpp"  "-pgmP${cpphs}/bin/cpphs" "-optP--cpp" ])))
     (enableFeature enableLibraryProfiling "library-profiling")
     (optionalString (enableExecutableProfiling || enableLibraryProfiling) "--profiling-detail=${profilingDetail}")
     (enableFeature enableExecutableProfiling "profiling")
@@ -265,16 +268,14 @@ let
   ) ++ optionals enableSeparateBinOutput [
     "--bindir=${binDir}"
   ] ++ optionals (doHaddockInterfaces && isLibrary) [
-    "--ghc-options=-haddock"
+    "--ghc-option=-haddock"
   ];
 
   postPhases = optional doInstallIntermediates "installIntermediatesPhase";
 
   setupCompileFlags = [
     (optionalString (!coreSetup) "-package-db=$setupPackageConfDir")
-    (optionalString enableParallelBuilding parallelBuildingFlags)
     "-threaded"       # https://github.com/haskell/cabal/issues/2398
-    "-rtsopts"        # allow us to pass RTS flags to the generated Setup executable
   ];
 
   isHaskellPkg = x: x ? isHaskellLibrary;
diff --git a/pkgs/development/haskell-modules/hackage-packages.nix b/pkgs/development/haskell-modules/hackage-packages.nix
index 0a1efccb62a40..d05b86212b646 100644
--- a/pkgs/development/haskell-modules/hackage-packages.nix
+++ b/pkgs/development/haskell-modules/hackage-packages.nix
@@ -20331,7 +20331,6 @@ self: {
        ];
        description = "Another Haskell web framework for rapid development";
        license = lib.licenses.bsd3;
-       hydraPlatforms = lib.platforms.none;
      }) {};
 
   "Spock-api" = callPackage
@@ -20371,7 +20370,6 @@ self: {
        libraryHaskellDepends = [ base hvect mtl Spock-api Spock-core ];
        description = "Another Haskell web framework for rapid development";
        license = lib.licenses.bsd3;
-       hydraPlatforms = lib.platforms.none;
      }) {};
 
   "Spock-auth" = callPackage
@@ -20415,8 +20413,6 @@ self: {
        ];
        description = "Another Haskell web framework for rapid development";
        license = lib.licenses.bsd3;
-       hydraPlatforms = lib.platforms.none;
-       broken = true;
      }) {};
 
   "Spock-digestive" = callPackage
@@ -20433,7 +20429,6 @@ self: {
        ];
        description = "Digestive functors support for Spock";
        license = lib.licenses.mit;
-       hydraPlatforms = lib.platforms.none;
      }) {};
 
   "Spock-lucid" = callPackage
@@ -20445,7 +20440,6 @@ self: {
        libraryHaskellDepends = [ base lucid Spock transformers ];
        description = "Lucid support for Spock";
        license = lib.licenses.bsd3;
-       hydraPlatforms = lib.platforms.none;
      }) {};
 
   "Spock-worker" = callPackage
@@ -20463,7 +20457,6 @@ self: {
        testHaskellDepends = [ base containers HTF stm vector ];
        description = "Background workers for Spock";
        license = lib.licenses.mit;
-       hydraPlatforms = lib.platforms.none;
      }) {};
 
   "SpreadsheetML" = callPackage
@@ -50668,7 +50661,6 @@ self: {
        ];
        description = "A small tool that clears cookies (and more)";
        license = lib.licenses.gpl3Only;
-       hydraPlatforms = lib.platforms.none;
        mainProgram = "bisc";
      }) {};
 
@@ -121353,6 +121345,7 @@ self: {
        sha256 = "1cx9jqpbr6b30qckp2zpsfk3swa58snjb79pq0l6485nvrxa9mls";
        description = "base library for GHCJS";
        license = lib.licenses.mit;
+       platforms = [ "javascript-ghcjs" ];
        maintainers = [ lib.maintainers.alexfmpe ];
      }) {};
 
@@ -121422,7 +121415,6 @@ self: {
        ];
        description = "GHCJS DOM Hello World, an example package";
        license = lib.licenses.mit;
-       badPlatforms = lib.platforms.darwin;
        maintainers = [ lib.maintainers.alexfmpe ];
      }) {};
 
@@ -121434,9 +121426,8 @@ self: {
        sha256 = "0im7wn7bn43rhkblh0wn9angadbdvywsalfz0adr9pkwv6hvc8qs";
        description = "DOM library using JSFFI and GHCJS";
        license = lib.licenses.mit;
-       hydraPlatforms = lib.platforms.none;
+       platforms = [ "javascript-ghcjs" ];
        maintainers = [ lib.maintainers.alexfmpe ];
-       broken = true;
      }) {};
 
   "ghcjs-dom-jsaddle" = callPackage
@@ -121449,6 +121440,7 @@ self: {
        doHaddock = false;
        description = "DOM library that supports both GHCJS and GHC using jsaddle";
        license = lib.licenses.mit;
+       maintainers = [ lib.maintainers.alexfmpe ];
      }) {};
 
   "ghcjs-dom-jsffi" = callPackage
@@ -121573,6 +121565,8 @@ self: {
        ];
        description = "Deprecated: use ghcjs-base's native websockets";
        license = lib.licenses.mit;
+       hydraPlatforms = lib.platforms.none;
+       broken = true;
      }) {};
 
   "ghcjs-xhr" = callPackage
@@ -151711,9 +151705,7 @@ self: {
        testToolDepends = [ hspec-discover ];
        description = "A terminal UI as drop-in replacement for hledger add";
        license = lib.licenses.bsd3;
-       hydraPlatforms = lib.platforms.none;
        mainProgram = "hledger-iadd";
-       broken = true;
      }) {};
 
   "hledger-iadd_1_3_21" = callPackage
@@ -151749,7 +151741,6 @@ self: {
        license = lib.licenses.bsd3;
        hydraPlatforms = lib.platforms.none;
        mainProgram = "hledger-iadd";
-       broken = true;
      }) {};
 
   "hledger-interest" = callPackage
@@ -163899,8 +163890,6 @@ self: {
        ];
        description = "A high-performance HTML tokenizer";
        license = lib.licenses.bsd3;
-       hydraPlatforms = lib.platforms.none;
-       broken = true;
      }) {};
 
   "html-parse-util" = callPackage
@@ -178690,7 +178679,6 @@ self: {
        ];
        description = "JSaddle Hello World, an example package";
        license = lib.licenses.mit;
-       badPlatforms = lib.platforms.darwin;
        maintainers = [ lib.maintainers.alexfmpe ];
      }) {};
 
@@ -179537,7 +179525,6 @@ self: {
        ];
        description = "Generics JSON (de)serialization using generics-sop";
        license = lib.licenses.bsd3;
-       hydraPlatforms = lib.platforms.none;
        maintainers = [ lib.maintainers.alexfmpe ];
      }) {};
 
@@ -189161,9 +189148,7 @@ self: {
        ];
        description = "Computing lenses generically using generics-sop";
        license = lib.licenses.bsd3;
-       hydraPlatforms = lib.platforms.none;
        maintainers = [ lib.maintainers.alexfmpe ];
-       broken = true;
      }) {};
 
   "lens-tell" = callPackage
@@ -189498,8 +189483,6 @@ self: {
        ];
        description = "Haskell bindings to LevelDB";
        license = lib.licenses.bsd3;
-       hydraPlatforms = lib.platforms.none;
-       broken = true;
      }) {inherit (pkgs) leveldb;};
 
   "leveldb-haskell-fork" = callPackage
@@ -249277,9 +249260,7 @@ self: {
        testHaskellDepends = [ aeson base hspec ];
        description = "Send push notifications to mobile iOS devices";
        license = lib.licenses.bsd3;
-       hydraPlatforms = lib.platforms.none;
        mainProgram = "sendapn";
-       broken = true;
      }) {};
 
   "push-notify-ccs" = callPackage
@@ -267562,9 +267543,7 @@ self: {
        description = "Generates unique passwords for various websites from a single password";
        license = lib.licenses.bsd3;
        platforms = lib.platforms.x86;
-       hydraPlatforms = lib.platforms.none;
        mainProgram = "scat";
-       broken = true;
      }) {};
 
   "scc" = callPackage
@@ -269939,8 +269918,6 @@ self: {
        ];
        description = "Multi-backend, high-level EDSL for interacting with SQL databases";
        license = lib.licenses.mit;
-       hydraPlatforms = lib.platforms.none;
-       broken = true;
      }) {};
 
   "selda-json" = callPackage
@@ -269952,7 +269929,6 @@ self: {
        libraryHaskellDepends = [ aeson base bytestring selda text ];
        description = "JSON support for the Selda database library";
        license = lib.licenses.mit;
-       hydraPlatforms = lib.platforms.none;
      }) {};
 
   "selda-postgresql" = callPackage
@@ -269987,7 +269963,6 @@ self: {
        ];
        description = "SQLite backend for the Selda database EDSL";
        license = lib.licenses.mit;
-       hydraPlatforms = lib.platforms.none;
      }) {};
 
   "select" = callPackage
@@ -274945,8 +274920,6 @@ self: {
        libraryHaskellDepends = [ base containers mtl syb ];
        description = "Functions that could be added to Data.Set.";
        license = lib.licenses.bsd3;
-       hydraPlatforms = lib.platforms.none;
-       broken = true;
      }) {};
 
   "set-monad" = callPackage
@@ -336488,7 +336461,6 @@ self: {
        ];
        description = "Add CSP headers to Yesod apps";
        license = lib.licenses.mit;
-       hydraPlatforms = lib.platforms.none;
      }) {};
 
   "yesod-datatables" = callPackage
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 75f0e54d697cb..b924a29f26162 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -229,7 +229,7 @@ in {
       buildTargetLlvmPackages = pkgsBuildTarget.llvmPackages_12;
       llvmPackages = pkgs.llvmPackages_12;
     };
-    ghc948 = callPackage ../development/compilers/ghc/9.4.8.fixme.nix {
+    ghc948 = callPackage ../development/compilers/ghc/9.4.8.nix {
       bootPkgs =
         # Building with 9.2 is broken due to
         # https://gitlab.haskell.org/ghc/ghc/-/issues/21914
@@ -568,7 +568,7 @@ in {
       buildHaskellPackages = ghc.bootPkgs;
       ghc = bh.compiler.ghcjs810;
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-8.10.x.nix { };
-      packageSetConfig = callPackage ../development/haskell-modules/configuration-ghcjs.nix { };
+      packageSetConfig = callPackage ../development/haskell-modules/configuration-ghcjs-8.x.nix { };
     };
 
     # The integer-simple attribute set contains package sets for all the GHC compilers