diff --git a/pkgs/development/tools/purescript/spago/default.nix b/pkgs/by-name/sp/spago-legacy/package.nix
similarity index 77%
rename from pkgs/development/tools/purescript/spago/default.nix
rename to pkgs/by-name/sp/spago-legacy/package.nix
index c06b588c56ba..ed5ffa355098 100644
--- a/pkgs/development/tools/purescript/spago/default.nix
+++ b/pkgs/by-name/sp/spago-legacy/package.nix
@@ -4,7 +4,7 @@
   lib,
 
   # The following are only needed for the passthru.tests:
-  spago,
+  spago-legacy,
   cacert,
   git,
   nodejs,
@@ -12,11 +12,11 @@
   runCommand,
 }:
 
-lib.pipe haskellPackages.spago [
+lib.pipe haskellPackages.spago-legacy [
   haskell.lib.compose.justStaticExecutables
 
   (haskell.lib.compose.overrideCabal (oldAttrs: {
-    changelog = "https://github.com/purescript/spago/releases/tag/${oldAttrs.version}";
+    changelog = "https://github.com/purescript/spago-legacy/releases/tag/${oldAttrs.version}";
 
     passthru = (oldAttrs.passthru or { }) // {
       updateScript = ./update.sh;
@@ -25,10 +25,10 @@ lib.pipe haskellPackages.spago [
       # network, so they cannot be run in the nix sandbox.  sudo is needed in
       # order to change the sandbox option.
       #
-      # $ sudo nix-build -A spago.passthru.tests --option sandbox relaxed
+      # $ sudo nix-build -A spago-legacy.passthru.tests --option sandbox relaxed
       #
       tests =
-        runCommand "spago-tests"
+        runCommand "spago-legacy-tests"
           {
             __noChroot = true;
             nativeBuildInputs = [
@@ -36,7 +36,7 @@ lib.pipe haskellPackages.spago [
               git
               nodejs
               purescript
-              spago
+              spago-legacy
             ];
           }
           ''
diff --git a/pkgs/development/tools/purescript/spago/spago.nix b/pkgs/by-name/sp/spago-legacy/spago-legacy.nix
similarity index 87%
rename from pkgs/development/tools/purescript/spago/spago.nix
rename to pkgs/by-name/sp/spago-legacy/spago-legacy.nix
index 905d6b63720e..75ea67ae64a0 100644
--- a/pkgs/development/tools/purescript/spago/spago.nix
+++ b/pkgs/by-name/sp/spago-legacy/spago-legacy.nix
@@ -62,12 +62,12 @@
   zlib,
 }:
 mkDerivation {
-  pname = "spago";
-  version = "0.21.0";
+  pname = "spago-legacy";
+  version = "0.21.1";
   src = fetchgit {
-    url = "https://github.com/purescript/spago.git";
-    sha256 = "1v5y15nhw6smnir0y7y854pa70iv8asxsqph2y8rz1c9lkz5d41g";
-    rev = "c354f4a461f65fcb83aaa843830ea1589f6c7179";
+    url = "https://github.com/purescript/spago-legacy.git";
+    sha256 = "18p9cic1y9b2v12np4b5sd82rz5njxh8f1vgqs4gwm6xjccmszmr";
+    rev = "2790261c28f59940f192c56f3b8245b3ae8b798d";
     fetchSubmodules = true;
   };
   isLibrary = true;
@@ -148,7 +148,7 @@ mkDerivation {
     versions
   ];
   testToolDepends = [ hspec-discover ];
-  homepage = "https://github.com/purescript/spago#readme";
+  homepage = "https://github.com/purescript/spago-legacy#readme";
   license = lib.licenses.bsd3;
   mainProgram = "spago";
 }
diff --git a/pkgs/development/tools/purescript/spago/update.sh b/pkgs/by-name/sp/spago-legacy/update.sh
similarity index 61%
rename from pkgs/development/tools/purescript/spago/update.sh
rename to pkgs/by-name/sp/spago-legacy/update.sh
index e25b1b8670b2..5ac99bdb0be0 100755
--- a/pkgs/development/tools/purescript/spago/update.sh
+++ b/pkgs/by-name/sp/spago-legacy/update.sh
@@ -1,10 +1,10 @@
 #!/usr/bin/env nix-shell
 #!nix-shell -i bash -p curl jq haskellPackages.cabal2nix-unstable.bin nix-prefetch-scripts -I nixpkgs=.
 #
-# This script will update the spago derivation to the latest version using
+# This script will update the spago-legacy derivation to the latest version using
 # cabal2nix.
 #
-# Note that you should always try building spago after updating it here, since
+# Note that you should always try building spago-legacy after updating it here, since
 # some of the overrides in pkgs/development/haskell/configuration-nix.nix may
 # need to be updated/changed.
 
@@ -14,26 +14,28 @@ set -eo pipefail
 script_dir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
 
 # Spago derivation created with cabal2nix.
-spago_derivation_file="${script_dir}/spago.nix"
+spago_derivation_file="${script_dir}/spago-legacy.nix"
 
-# This is the current revision of spago in Nixpkgs.
+# This is the current revision of spago-legacy in Nixpkgs.
 old_version="$(sed -En 's/.*\bversion = "(.*?)".*/\1/p' "$spago_derivation_file")"
 
-# This is the latest release version of spago on GitHub.
-new_version=$(curl --silent "https://api.github.com/repos/purescript/spago/releases" | jq '.[0].tag_name' --raw-output)
+# This is the latest release version of spago-legacy on GitHub.
+new_version=$(curl --silent "https://api.github.com/repos/purescript/spago-legacy/releases" | jq '.[0].tag_name' --raw-output)
 
-echo "Updating spago from old version $old_version to new version $new_version."
+echo "Updating spago-legacy from old version $old_version to new version $new_version."
 echo "Running cabal2nix and outputting to ${spago_derivation_file}..."
 
 echo "# This has been automatically generated by the script" > "$spago_derivation_file"
 echo "# ./update.sh.  This should not be changed by hand." >> "$spago_derivation_file"
 
-cabal2nix --revision "$new_version" "https://github.com/purescript/spago.git" >> "$spago_derivation_file"
+cabal2nix --revision "$new_version" "https://github.com/purescript/spago-legacy.git" >> "$spago_derivation_file"
+
+nixfmt "$spago_derivation_file"
 
 # TODO: This should ideally also automatically update the docsSearchVersion
 # from pkgs/development/haskell/configuration-nix.nix.
 
 echo
 echo "Finished.  Make sure you run the following commands to confirm Spago builds correctly:"
-echo ' - `nix build -L -f ./. spago`'
-echo ' - `sudo nix build -L -f ./. spago.passthru.tests --option sandbox relaxed`'
+echo ' - `nix build -L -f ./. spago-legacy`'
+echo ' - `sudo nix build -L -f ./. spago-legacy.passthru.tests --option sandbox relaxed`'
diff --git a/pkgs/development/compilers/purescript/purescript/update.sh b/pkgs/development/compilers/purescript/purescript/update.sh
index 186a51a2bca3..0834fbf5d1dc 100755
--- a/pkgs/development/compilers/purescript/purescript/update.sh
+++ b/pkgs/development/compilers/purescript/purescript/update.sh
@@ -50,4 +50,4 @@ echo
 echo "Finished.  Make sure you run the following commands to confirm PureScript builds correctly:"
 echo ' - `nix build -L -f ./. purescript`'
 echo ' - `nix build -L -f ./. purescript.passthru.tests.minimal-module`'
-echo ' - `sudo nix build -L -f ./. spago.passthru.tests --option sandbox relaxed`'
+echo ' - `sudo nix build -L -f ./. spago-legacy.passthru.tests --option sandbox relaxed`'
diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index dc8b2773dcfe..12bd2839f569 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -201,28 +201,9 @@ with haskellLib;
     }
   );
 
-  # Expected test output for these accidentally checks the absolute location of the source directory
-  # https://github.com/dan-t/cabal-cargs/issues/9
-  cabal-cargs = overrideCabal (drv: {
-    testFlags = drv.testFlags or [ ] ++ [
-      "-p"
-      "!/FindCabalFilePure withoutSandbox/"
-      "-p"
-      "!/FromCabalFilePure withoutSandbox/"
-      "-p"
-      "!/FromLibSrcPure withoutSandbox/"
-      "-p"
-      "!/FromExeSrcFilePure withoutSandbox/"
-      "-p"
-      "!/FindCabalFilePure withSandbox/"
-      "-p"
-      "!/FromCabalFilePure withSandbox/"
-      "-p"
-      "!/FromLibSrcPure withSandbox/"
-      "-p"
-      "!/FromExeSrcFilePure withSandbox/"
-    ];
-  }) super.cabal-cargs;
+  # 2025-09-20: Too strict bound on filepath (<1.5)
+  # https://github.com/dan-t/cabal-cargs/issues/10
+  cabal-cargs = doJailbreak super.cabal-cargs;
 
   # Extensions wants a specific version of Cabal for its list of Haskell
   # language extensions.
@@ -274,10 +255,24 @@ with haskellLib;
         super
         // {
           # HLS 2.11: Too strict bound on Diff 1.0.
-          haskell-language-server = dontCheck (doJailbreak super.haskell-language-server);
+          haskell-language-server = lib.pipe super.haskell-language-server [
+            dontCheck
+            doJailbreak
+            (
+              if versionOlder self.ghc.version "9.10" || versionOlder "9.11" self.ghc.version then
+                addBuildDepends [
+                  self.apply-refact
+                  self.hlint
+                  self.refact
+                ]
+              else
+                lib.id
+            )
+          ];
         }
       )
     )
+    hlint
     fourmolu
     ormolu
     haskell-language-server
@@ -397,6 +392,14 @@ with haskellLib;
   # There are numerical tests on random data, that may fail occasionally
   lapack = dontCheck super.lapack;
 
+  # fpr-calc test suite depends on random >= 1.3
+  # see https://github.com/IntersectMBO/lsm-tree/issues/797
+  bloomfilter-blocked =
+    lib.warnIf (lib.versionAtLeast self.random.version "1.3")
+      "haskellPackages.bloomfilter-blocked: dontCheck can potentially be removed"
+      dontCheck
+      super.bloomfilter-blocked;
+
   # support for transformers >= 0.6
   lifted-base = appendPatch (fetchpatch {
     url = "https://github.com/basvandijk/lifted-base/commit/6b61483ec7fd0d5d5d56ccb967860d42740781e8.patch";
@@ -427,6 +430,10 @@ with haskellLib;
   # https://github.com/sw17ch/data-clist/pull/28
   data-clist = doJailbreak super.data-clist;
 
+  # 2025-09-20: Allow QuickCheck >= 2.15
+  # https://github.com/raehik/binrep/issues/14
+  binrep = warnAfterVersion "1.1.0" (doJailbreak super.binrep);
+
   # 2024-06-23: Hourglass is archived and had its last commit 6 years ago.
   # Patch is needed to add support for time 1.10, which is only used in the tests
   # https://github.com/vincenthz/hs-hourglass/pull/56
@@ -494,6 +501,10 @@ with haskellLib;
   ghc-datasize = disableLibraryProfiling super.ghc-datasize;
   ghc-vis = disableLibraryProfiling super.ghc-vis;
 
+  # 2025-09-20: Too strict upper bound on base (<4.20)
+  # https://github.com/phadej/regression-simple/issues/13
+  regression-simple = doJailbreak super.regression-simple;
+
   # Fix 32bit struct being used for 64bit syscall on 32bit platforms
   # https://github.com/haskellari/lukko/issues/15
   lukko = appendPatches [
@@ -866,8 +877,28 @@ with haskellLib;
   }) super.xml-picklers;
 
   # 2025-08-03: Too strict bounds on open-browser, data-default and containers
-  # https://github.com/lierdakil/pandoc-crossref/issues/478
-  pandoc-crossref = doJailbreak super.pandoc-crossref;
+  # https://github.com/lierdakil/pandoc-crossref/issues/478 krank:ignore-line
+  pandoc-crossref = lib.pipe super.pandoc-crossref [
+    (warnAfterVersion "0.3.21")
+    doJailbreak
+
+    # We are still using pandoc == 3.7.*
+    (appendPatch (
+      lib.warnIf (lib.versionAtLeast self.pandoc.version "3.8")
+        "haskellPackages.pandoc-crossref: remove revert of pandoc-3.8 patch"
+        pkgs.fetchpatch
+        {
+          name = "pandoc-crossref-revert-pandoc-3.8-highlight.patch";
+          url = "https://github.com/lierdakil/pandoc-crossref/commit/b0c35a59d5a802f6525407bfeb31699ffd0b4671.patch";
+          hash = "sha256-MIITL9Qr3+1fKf1sTwHzXPcYTt3YC+vr9CpMgqsBXlc=";
+          revert = true;
+        }
+    ))
+  ];
+
+  # Too strict bounds on QuickCheck (<2.15), containers (<0.7), hashable (<1.5), pandoc (<3.7)
+  # https://github.com/jaspervdj/patat/issues/194
+  patat = doJailbreak super.patat;
 
   # Too strict upper bound on data-default-class (< 0.2)
   # https://github.com/stackbuilders/dotenv-hs/issues/203
@@ -1705,32 +1736,22 @@ with haskellLib;
       # https://github.com/NixOS/nixpkgs/issues/198495
       (dontCheckIf (pkgs.postgresqlTestHook.meta.broken) super.persistent-postgresql);
 
-  # Needs matching lsp-types
-  # Allow lens >= 5.3
-  lsp_2_4_0_0 = doDistribute (
-    doJailbreak (
-      super.lsp_2_4_0_0.override {
-        lsp-types = self.lsp-types_2_1_1_0;
-      }
-    )
-  );
-
-  # Needs matching lsp-types;
-  # Lift bound on sorted-list <0.2.2
-  lsp_2_1_0_0 = doDistribute (
-    doJailbreak (
-      super.lsp_2_1_0_0.override {
-        lsp-types = self.lsp-types_2_1_1_0;
-      }
-    )
-  );
-  # Lift bound on lens <5.3
-  lsp-types_2_1_1_0 = doDistribute (doJailbreak super.lsp-types_2_1_1_0);
-
-  # 2025-03-03: dhall-lsp-server-1.1.4 requires lsp-2.1.0.0
-  dhall-lsp-server = super.dhall-lsp-server.override {
-    lsp = self.lsp_2_1_0_0;
-  };
+  dhall-lsp-server = appendPatches [
+    # Add support for lsp >= 2.7
+    (pkgs.fetchpatch {
+      name = "dhall-lsp-server-lsp-2.7.patch";
+      url = "https://github.com/dhall-lang/dhall-haskell/commit/a621e1438df5865d966597e2e1b0bb37e8311447.patch";
+      sha256 = "sha256-7edxNIeIM/trl2SUXybvSzkscvr1kj5+tZF50IeTOgY=";
+      relative = "dhall-lsp-server";
+    })
+    # Fix build with text >= 2.1.2
+    (pkgs.fetchpatch {
+      name = "dhall-lsp-server-text-2.1.2.patch";
+      url = "https://github.com/dhall-lang/dhall-haskell/commit/9f2d4d44be643229784bfc502ab49184ec82bc05.patch";
+      hash = "sha256-cwNH5+7YY8UbA9zHhTRfVaqtIMowZGfFT5Kj+wSlapA=";
+      relative = "dhall-lsp-server";
+    })
+  ] super.dhall-lsp-server;
 
   # Tests disabled and broken override needed because of missing lib chrome-test-utils: https://github.com/reflex-frp/reflex-dom/issues/392
   reflex-dom-core = lib.pipe super.reflex-dom-core [
@@ -2183,12 +2204,15 @@ with haskellLib;
 
   # stack-3.7.1 requires Cabal < 3.12
   stack =
+    let
+      stack' = super.stack.overrideScope (self: super: { hpack = self.hpack_0_38_1; });
+    in
     if lib.versionOlder self.ghc.version "9.10" then
-      super.stack
+      stack'
     else
       lib.pipe
         # to reduce rebuilds, don't override Cabal in the entire scope
-        ((super.stack.override { Cabal = self.Cabal_3_10_3_0; }).overrideScope (
+        ((stack'.override { Cabal = self.Cabal_3_10_3_0; }).overrideScope (
           self: super:
           let
             downgradeCabal =
@@ -2643,6 +2667,9 @@ with haskellLib;
   # 2025-08-06: Upper bounds on containers <0.7 and hedgehog < 1.5 too strict.
   hermes-json = doJailbreak super.hermes-json;
 
+  # Allow containers >= 0.7, https://github.com/nomeata/arbtt/issues/181
+  arbtt = doJailbreak super.arbtt;
+
   # hexstring is not compatible with newer versions of base16-bytestring
   # See https://github.com/solatis/haskell-hexstring/issues/3
   hexstring = overrideCabal (old: {
@@ -2688,7 +2715,6 @@ with haskellLib;
       let
         # We need to build purescript with these dependencies and thus also its reverse
         # dependencies to avoid version mismatches in their dependency closure.
-        # TODO: maybe unify with the spago overlay in configuration-nix.nix?
         purescriptOverlay = self: super: {
           # As of 2021-11-08, the latest release of `language-javascript` is 0.7.1.0,
           # but it has a problem with parsing the `async` keyword.  It doesn't allow
@@ -3258,17 +3284,22 @@ with haskellLib;
   brillo-juicy = warnAfterVersion "0.2.4" (doJailbreak super.brillo-juicy);
   brillo = warnAfterVersion "1.13.3" (doJailbreak super.brillo);
 
-  # Floating point precision issues. Test suite is only checked on x86_64.
-  # https://github.com/tweag/monad-bayes/issues/368
-  monad-bayes = dontCheckIf (
-    let
-      inherit (pkgs.stdenv) hostPlatform;
-    in
-    !hostPlatform.isx86_64
-    # Presumably because we emulate x86_64-darwin via Rosetta, x86_64-darwin
-    # also fails on Hydra
-    || hostPlatform.isDarwin
-  ) super.monad-bayes;
+  monad-bayes =
+    # Floating point precision issues. Test suite is only checked on x86_64.
+    # https://github.com/tweag/monad-bayes/issues/368
+    dontCheckIf
+      (
+        let
+          inherit (pkgs.stdenv) hostPlatform;
+        in
+        !hostPlatform.isx86_64
+        # Presumably because we emulate x86_64-darwin via Rosetta, x86_64-darwin
+        # also fails on Hydra
+        || hostPlatform.isDarwin
+      )
+      # Too strict bounds on brick (<2.6), vty (<6.3)
+      # https://github.com/tweag/monad-bayes/issues/378
+      (doJailbreak super.monad-bayes);
 
   crucible =
     lib.pipe
diff --git a/pkgs/development/haskell-modules/configuration-darwin.nix b/pkgs/development/haskell-modules/configuration-darwin.nix
index d77a6dc74a06..b0a7b0d80fa7 100644
--- a/pkgs/development/haskell-modules/configuration-darwin.nix
+++ b/pkgs/development/haskell-modules/configuration-darwin.nix
@@ -352,18 +352,18 @@ self: super:
     # the latter in the future!
     cabal2nix = overrideCabal (old: {
       postInstall = ''
-        remove-references-to -t ${self.hpack} "$out/bin/cabal2nix"
+        remove-references-to -t ${self.hpack} "''${!outputBin}/bin/cabal2nix"
         # Note: The `data` output is needed at runtime.
-        remove-references-to -t ${self.distribution-nixpkgs.out} "$out/bin/hackage2nix"
+        remove-references-to -t ${self.distribution-nixpkgs.out} "''${!outputBin}/bin/hackage2nix"
 
         ${old.postInstall or ""}
       '';
     }) super.cabal2nix;
     cabal2nix-unstable = overrideCabal (old: {
       postInstall = ''
-        remove-references-to -t ${self.hpack} "$out/bin/cabal2nix"
+        remove-references-to -t ${self.hpack} "''${!outputBin}/bin/cabal2nix"
         # Note: The `data` output is needed at runtime.
-        remove-references-to -t ${self.distribution-nixpkgs-unstable.out} "$out/bin/hackage2nix"
+        remove-references-to -t ${self.distribution-nixpkgs-unstable.out} "''${!outputBin}/bin/hackage2nix"
 
         ${old.postInstall or ""}
       '';
diff --git a/pkgs/development/haskell-modules/configuration-ghc-9.4.x.nix b/pkgs/development/haskell-modules/configuration-ghc-9.4.x.nix
index 7d0853cc057f..7673e54c2e74 100644
--- a/pkgs/development/haskell-modules/configuration-ghc-9.4.x.nix
+++ b/pkgs/development/haskell-modules/configuration-ghc-9.4.x.nix
@@ -121,7 +121,7 @@ self: super: {
   tar = self.tar_0_6_3_0;
 
   # A given major version of ghc-exactprint only supports one version of GHC.
-  ghc-exactprint = super.ghc-exactprint_1_6_1_3;
+  ghc-exactprint = dontCheck super.ghc-exactprint_1_6_1_3;
 
   # Too strict upper bound on template-haskell
   # https://github.com/mokus0/th-extras/issues/18
@@ -130,22 +130,32 @@ self: super: {
   # https://github.com/kowainik/relude/issues/436
   relude = dontCheck super.relude;
 
+  haddock-library = doJailbreak super.haddock-library;
+  apply-refact = addBuildDepend self.data-default-class super.apply-refact;
+  path = self.path_0_9_5;
   inherit
     (
       let
         hls_overlay = lself: lsuper: {
           Cabal-syntax = lself.Cabal-syntax_3_10_3_0;
           Cabal = lself.Cabal_3_10_3_0;
+          extensions = dontCheck (doJailbreak (lself.extensions_0_1_0_1));
         };
       in
       lib.mapAttrs (_: pkg: doDistribute (pkg.overrideScope hls_overlay)) {
-        haskell-language-server = allowInconsistentDependencies super.haskell-language-server;
-        fourmolu = doJailbreak self.fourmolu_0_14_0_0; # ansi-terminal, Diff
+        haskell-language-server = allowInconsistentDependencies (
+          addBuildDepends [ self.retrie self.floskell ] super.haskell-language-server
+        );
+        fourmolu = doJailbreak (dontCheck self.fourmolu_0_14_0_0); # ansi-terminal, Diff
         ormolu = doJailbreak self.ormolu_0_7_2_0; # ansi-terminal
         hlint = self.hlint_3_6_1;
         stylish-haskell = self.stylish-haskell_0_14_5_0;
+        retrie = doJailbreak (unmarkBroken super.retrie);
+        floskell = doJailbreak super.floskell;
       }
     )
+    retrie
+    floskell
     haskell-language-server
     fourmolu
     ormolu
diff --git a/pkgs/development/haskell-modules/configuration-ghc-9.6.x.nix b/pkgs/development/haskell-modules/configuration-ghc-9.6.x.nix
index 746115587fbf..351f10d84bae 100644
--- a/pkgs/development/haskell-modules/configuration-ghc-9.6.x.nix
+++ b/pkgs/development/haskell-modules/configuration-ghc-9.6.x.nix
@@ -109,7 +109,6 @@ in
   stm-containers = dontCheck super.stm-containers;
   regex-tdfa = dontCheck super.regex-tdfa;
   hiedb = dontCheck super.hiedb;
-  retrie = dontCheck super.retrie;
   # https://github.com/kowainik/relude/issues/436
   relude = dontCheck (doJailbreak super.relude);
 
@@ -198,8 +197,39 @@ in
   # A given major version of ghc-exactprint only supports one version of GHC.
   ghc-exactprint = addBuildDepend self.extra super.ghc-exactprint_1_7_1_0;
 
-  ghc-lib-parser = doDistribute self.ghc-lib-parser_9_10_3_20250912;
-  ghc-lib-parser-ex = doDistribute self.ghc-lib-parser-ex_9_10_0_0;
+  ghc-lib-parser = doDistribute self.ghc-lib-parser_9_8_5_20250214;
+  ghc-lib-parser-ex = doDistribute self.ghc-lib-parser-ex_9_8_0_2;
+  haddock-library = doJailbreak super.haddock-library;
+  apply-refact = addBuildDepend self.data-default-class super.apply-refact;
+  inherit
+    (
+      let
+        hls_overlay = lself: lsuper: {
+          Cabal-syntax = lself.Cabal-syntax_3_10_3_0;
+          Cabal = lself.Cabal_3_10_3_0;
+          extensions = dontCheck (doJailbreak lself.extensions_0_1_0_1);
+        };
+      in
+      lib.mapAttrs (_: pkg: doDistribute (pkg.overrideScope hls_overlay)) {
+        haskell-language-server = allowInconsistentDependencies (
+          addBuildDepends [ self.retrie self.floskell ] super.haskell-language-server
+        );
+        ormolu = doDistribute self.ormolu_0_7_4_0;
+        fourmolu = doDistribute (dontCheck (doJailbreak self.fourmolu_0_15_0_0));
+        hlint = doDistribute self.hlint_3_8;
+        stylish-haskell = self.stylish-haskell_0_14_6_0;
+        retrie = doJailbreak (unmarkBroken super.retrie);
+        floskell = doJailbreak super.floskell;
+      }
+    )
+    retrie
+    floskell
+    haskell-language-server
+    fourmolu
+    ormolu
+    hlint
+    stylish-haskell
+    ;
 }
 # super.ghc is required to break infinite recursion as Nix is strict in the attrNames
 //
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 4023b746fe62..f739c9ddea64 100644
--- a/pkgs/development/haskell-modules/configuration-ghc-9.8.x.nix
+++ b/pkgs/development/haskell-modules/configuration-ghc-9.8.x.nix
@@ -104,6 +104,37 @@ in
   # A given major version of ghc-exactprint only supports one version of GHC.
   ghc-exactprint = doDistribute super.ghc-exactprint_1_8_0_0;
 
-  ghc-lib-parser = doDistribute self.ghc-lib-parser_9_10_3_20250912;
-  ghc-lib-parser-ex = doDistribute self.ghc-lib-parser-ex_9_10_0_0;
+  haddock-library = doJailbreak super.haddock-library;
+  apply-refact = addBuildDepend self.data-default-class super.apply-refact;
+  ghc-lib-parser = doDistribute self.ghc-lib-parser_9_8_5_20250214;
+  ghc-lib-parser-ex = doDistribute self.ghc-lib-parser-ex_9_8_0_2;
+  inherit
+    (
+      let
+        hls_overlay = lself: lsuper: {
+          Cabal-syntax = lself.Cabal-syntax_3_10_3_0;
+          Cabal = lself.Cabal_3_10_3_0;
+          extensions = dontCheck (doJailbreak super.extensions_0_1_0_1);
+        };
+      in
+      lib.mapAttrs (_: pkg: doDistribute (pkg.overrideScope hls_overlay)) {
+        haskell-language-server = allowInconsistentDependencies (
+          addBuildDepends [ self.retrie self.floskell ] super.haskell-language-server
+        );
+        ormolu = doDistribute self.ormolu_0_7_4_0;
+        fourmolu = doDistribute (dontCheck (doJailbreak self.fourmolu_0_15_0_0));
+        hlint = doDistribute self.hlint_3_8;
+        stylish-haskell = self.stylish-haskell_0_14_6_0;
+        retrie = doJailbreak (unmarkBroken super.retrie);
+        floskell = doJailbreak super.floskell;
+      }
+    )
+    retrie
+    floskell
+    haskell-language-server
+    fourmolu
+    ormolu
+    hlint
+    stylish-haskell
+    ;
 }
diff --git a/pkgs/development/haskell-modules/configuration-hackage2nix/broken.yaml b/pkgs/development/haskell-modules/configuration-hackage2nix/broken.yaml
index 2f1bff24722b..1012f06cdb83 100644
--- a/pkgs/development/haskell-modules/configuration-hackage2nix/broken.yaml
+++ b/pkgs/development/haskell-modules/configuration-hackage2nix/broken.yaml
@@ -231,7 +231,6 @@ broken-packages:
   - arbor-monad-logger # failure in job https://hydra.nixos.org/build/233228659 at 2023-09-02
   - arbor-monad-metric # failure in job https://hydra.nixos.org/build/233236175 at 2023-09-02
   - arbor-postgres # failure in job https://hydra.nixos.org/build/233232935 at 2023-09-02
-  - arbtt # failure in job https://hydra.nixos.org/build/307516851 at 2025-09-19
   - arch-hs # failure in job https://hydra.nixos.org/build/233225768 at 2023-09-02
   - archiver # failure in job https://hydra.nixos.org/build/233245795 at 2023-09-02
   - archlinux # failure in job https://hydra.nixos.org/build/233202430 at 2023-09-02
@@ -485,8 +484,6 @@ broken-packages:
   - bindings-wlc # failure in job https://hydra.nixos.org/build/233332720 at 2023-09-02
   - bindynamic # failure in job https://hydra.nixos.org/build/295091957 at 2025-04-22
   - binembed # failure in job https://hydra.nixos.org/build/233219100 at 2023-09-02
-  - binrep # failure in job https://hydra.nixos.org/build/307517077 at 2025-09-19
-  - binrep-instances # failure in job https://hydra.nixos.org/build/295092045 at 2025-04-22
   - binsm # failure in job https://hydra.nixos.org/build/233232355 at 2023-09-02
   - bio # failure in job https://hydra.nixos.org/build/233225273 at 2023-09-02
   - bio-sequence # failure in job https://hydra.nixos.org/build/233236140 at 2023-09-02
@@ -654,7 +651,6 @@ broken-packages:
   - cabal-auto-expose # failure in job https://hydra.nixos.org/build/233195440 at 2023-09-02
   - cabal-build-programs # failure in job https://hydra.nixos.org/build/257091363 at 2024-04-27
   - cabal-bundle-clib # failure in job https://hydra.nixos.org/build/233199225 at 2023-09-02
-  - cabal-cargs # failure in job https://hydra.nixos.org/build/307517214 at 2025-09-19
   - cabal-constraints # failure in job https://hydra.nixos.org/build/233214316 at 2023-09-02
   - cabal-db # failure in job https://hydra.nixos.org/build/233197235 at 2023-09-02
   - cabal-debian # failure in job https://hydra.nixos.org/build/233255267 at 2023-09-02
@@ -1258,7 +1254,6 @@ broken-packages:
   - database-migrate # failure in job https://hydra.nixos.org/build/233201597 at 2023-09-02
   - database-study # failure in job https://hydra.nixos.org/build/233222466 at 2023-09-02
   - datadog # failure in job https://hydra.nixos.org/build/233191124 at 2023-09-02
-  - dataframe # failure in job https://hydra.nixos.org/build/307517771 at 2025-09-19
   - DataIndex # failure in job https://hydra.nixos.org/build/233254506 at 2023-09-02
   - datalog # failure in job https://hydra.nixos.org/build/233242707 at 2023-09-02
   - datapacker # failure in job https://hydra.nixos.org/build/233206524 at 2023-09-02
@@ -1357,7 +1352,6 @@ broken-packages:
   - dhall-check # failure in job https://hydra.nixos.org/build/233206425 at 2023-09-02
   - dhall-csv # failure in job https://hydra.nixos.org/build/233256049 at 2023-09-02
   - dhall-fly # failure in job https://hydra.nixos.org/build/233220306 at 2023-09-02
-  - dhall-lsp-server # failure in job https://hydra.nixos.org/build/307610458 at 2025-09-19
   - dhall-recursive-adt # failure in job https://hydra.nixos.org/build/233210665 at 2023-09-02
   - dhall-text # failure in job https://hydra.nixos.org/build/233253809 at 2023-09-02
   - dhall-text-shell # failure in job https://hydra.nixos.org/build/244399613 at 2024-01-01
@@ -4071,7 +4065,6 @@ broken-packages:
   - mollie-api-haskell # failure in job https://hydra.nixos.org/build/233200867 at 2023-09-02
   - monad-atom # failure in job https://hydra.nixos.org/build/233243367 at 2023-09-02
   - monad-atom-simple # failure in job https://hydra.nixos.org/build/233259038 at 2023-09-02
-  - monad-bayes # failure in job https://hydra.nixos.org/build/307520391 at 2025-09-19
   - monad-branch # failure in job https://hydra.nixos.org/build/233251253 at 2023-09-02
   - monad-choice # failure in job https://hydra.nixos.org/build/233255987 at 2023-09-02
   - monad-fork # failure in job https://hydra.nixos.org/build/233206855 at 2023-09-02
@@ -4562,7 +4555,6 @@ broken-packages:
   - pan-os-syslog # failure in job https://hydra.nixos.org/build/233244422 at 2023-09-02
   - pandoc-citeproc # failure in job https://hydra.nixos.org/build/233198462 at 2023-09-02
   - pandoc-columns # failure in job https://hydra.nixos.org/build/233234538 at 2023-09-02
-  - pandoc-crossref # failure in job https://hydra.nixos.org/build/307611190 at 2025-09-19
   - pandoc-csv2table # failure in job https://hydra.nixos.org/build/233229925 at 2023-09-02
   - pandoc-dhall-decoder # failure in job https://hydra.nixos.org/build/307611186 at 2025-09-19
   - pandoc-emphasize-code # failure in job https://hydra.nixos.org/build/252733347 at 2024-03-16
@@ -4653,7 +4645,6 @@ broken-packages:
   - pasta-curves # failure in job https://hydra.nixos.org/build/233196512 at 2023-09-02
   - pastis # failure in job https://hydra.nixos.org/build/233218498 at 2023-09-02
   - pasty # failure in job https://hydra.nixos.org/build/233251812 at 2023-09-02
-  - patat # failure in job https://hydra.nixos.org/build/307611198 at 2025-09-19
   - patches-vector # failure in job https://hydra.nixos.org/build/233244862 at 2023-09-02
   - path-formatting # failure in job https://hydra.nixos.org/build/233199358 at 2023-09-02
   - path-sing # failure in job https://hydra.nixos.org/build/237234354 at 2023-10-21
@@ -5309,7 +5300,6 @@ broken-packages:
   - registry-messagepack # failure in job https://hydra.nixos.org/build/303231364 at 2025-07-27
   - registry-options # failure in job https://hydra.nixos.org/build/295096594 at 2025-04-22
   - regress # failure in job https://hydra.nixos.org/build/233208901 at 2023-09-02
-  - regression-simple # failure in job https://hydra.nixos.org/build/307521504 at 2025-09-19
   - regular # failure in job https://hydra.nixos.org/build/233232656 at 2023-09-02
   - rehoo # failure in job https://hydra.nixos.org/build/233246417 at 2023-09-02
   - rei # failure in job https://hydra.nixos.org/build/233221328 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 bc775150e3a6..39a04d123178 100644
--- a/pkgs/development/haskell-modules/configuration-hackage2nix/main.yaml
+++ b/pkgs/development/haskell-modules/configuration-hackage2nix/main.yaml
@@ -60,8 +60,9 @@ extra-packages:
   - Cabal-syntax == 3.12.*
   - Cabal-syntax == 3.14.*
   - Cabal-syntax == 3.16.*              # version required for cabal-install and other packages
+  - extensions == 0.1.0.1               # 2025-09-21: needed for Cabal 3.10 (fourmolo/ormolu with ghc 9.8)
   - fourmolu == 0.14.0.0                # 2023-11-13: for ghc-lib-parser 9.6 compat
-  - fsnotify < 0.4                      # 2024-04-22: required by spago-0.21
+  - fourmolu == 0.15.0.0                # 2025-09-21: for ghc-lib-parser 9.8 compat
   - fuzzyset == 0.2.4                   # 2023-12-20: Needed for building postgrest > 10
   - ghc-exactprint == 0.6.*             # 2022-12-12: needed for GHC < 9.2
   - ghc-exactprint == 1.5.*             # 2023-03-30: needed for GHC == 9.2
@@ -74,10 +75,10 @@ extra-packages:
   - ghc-lib == 9.10.*                   # 2024-12-30: preserve for GHC 9.10/ghc-tags 1.9
   - ghc-lib-parser == 9.2.*             # 2022-02-17: preserve for GHC 8.10, 9.0
   - ghc-lib-parser == 9.6.*             # 2024-05-19: preserve for GHC 9.2, 9.4
-  - ghc-lib-parser == 9.10.*            # 2024-12-26: preserve for GHC 9.6, 9.8, 9.10
+  - ghc-lib-parser == 9.8.*            # 2024-12-26: preserve for GHC 9.6, 9.8
   - ghc-lib-parser-ex == 9.2.*          # 2022-07-13: preserve for GHC 8.10, 9.0
   - ghc-lib-parser-ex == 9.6.*          # 2024-05-19: preserve for GHC 9.2, 9.4
-  - ghc-lib-parser-ex == 9.10.*         # 2024-12-26: preserve for GHC 9.6, 9.8, 9.10
+  - ghc-lib-parser-ex == 9.8.*         # 2024-12-26: preserve for GHC 9.6, 9.8
   - ghc-tags == 1.5.*                   # 2023-02-18: preserve for ghc-lib == 9.2.*
   - ghc-tags == 1.7.*                   # 2023-02-18: preserve for ghc-lib == 9.6.*
   - ghc-tags == 1.8.*                   # 2023-02-18: preserve for ghc-lib == 9.8.*
@@ -91,15 +92,16 @@ extra-packages:
   - hasql-pool < 1.1                    # 2025-01-19: Needed for building postgrest
   - hasql-transaction < 1.1.1           # 2025-01-19: Needed for building postgrest
   - hlint == 3.6.*                      # 2025-04-14: needed for hls with ghc-lib-parser 9.6
+  - hlint == 3.8.*                      # 2025-09-21: needed for hls with ghc-lib-parser 9.8
+  - hpack == 0.38.1                     # 2025-09-18: to match exact version upstream stack-3.7.1 uses
   - hspec-megaparsec == 2.2.0           # 2023-11-18: Latest version compatible with ghc 9.0
   - language-javascript == 0.7.0.0      # required by purescript
-  - lsp < 2.5                           # 2024-07-08: need for koka
-  - lsp == 2.1.*                        # 2024-02-28: need for dhall-lsp-server
-  - lsp-types == 2.1.*                  # 2024-02-28: need for dhall-lsp-server and koka
   - network-run == 0.4.0                # 2024-10-20: for GHC 9.10/network == 3.1.*
   - ormolu == 0.5.2.0                   # 2023-08-08: preserve for ghc 9.0
   - ormolu == 0.7.2.0                   # 2023-11-13: for ghc-lib-parser 9.6 compat
+  - ormolu == 0.7.4.0                   # 2023-09-21: for ghc-lib-parser 9.8 compat
   - os-string == 1.*                    # 2025-07-30: dummy package we need for pre os-string GHCs
+  - path == 0.9.5                       # 2025-09-21: Pin for hls on ghc 9.4
   - postgresql-binary < 0.14            # 2025-01-19: Needed for building postgrest
   - primitive-unlifted == 0.1.3.1       # 2024-03-16: preserve for ghc 9.2
   - retrie < 1.2.0.0                    # 2022-12-30: preserve for ghc < 9.2
@@ -108,13 +110,13 @@ extra-packages:
   - simple-get-opt < 0.5                # 2025-05-01: for crux-0.7.2
   - stylish-haskell == 0.14.4.0         # 2022-09-19: preserve for ghc 9.0
   - stylish-haskell == 0.14.5.0         # 2025-04-14: needed for hls with ghc-lib 9.6
+  - stylish-haskell == 0.14.6.0         # 2025-09-21: needed for hls with ghc-lib 9.8
   - stylish-haskell == 0.15.0.1         # 2025-04-14: needed for hls with ghc-lib 9.10
   - tar == 0.6.0.0                      # 2025-02-08: last version to not require os-string (which can't be built with GHC < 9.2)
   - tar == 0.6.3.0                      # 2025-08-17: last version to not require file-io and directory-ospath-streaming (for GHC < 9.6)
   - text-builder < 1                    # 2025-08-27: Needed for building postgrest
   - text-builder-dev < 0.4              # 2025-08-27: Needed for building postgrest
   - text-metrics < 0.3.3                # 2025-02-08: >= 0.3.3 uses GHC2021
-  - versions < 6                        # 2024-04-22: required by spago-0.21
   - weeder == 2.3.*                     # 2022-05-31: preserve for GHC 9.0.2
   - weeder == 2.4.*                     # 2023-02-02: preserve for GHC 9.2.*
 # keep-sorted end
diff --git a/pkgs/development/haskell-modules/configuration-hackage2nix/transitive-broken.yaml b/pkgs/development/haskell-modules/configuration-hackage2nix/transitive-broken.yaml
index e5bdcb6107cd..4f70b7e6cdef 100644
--- a/pkgs/development/haskell-modules/configuration-hackage2nix/transitive-broken.yaml
+++ b/pkgs/development/haskell-modules/configuration-hackage2nix/transitive-broken.yaml
@@ -310,7 +310,6 @@ dont-distribute-packages:
  - blockio
  - blogination
  - BlogLiterately-diagrams
- - bloomfilter-blocked
  - bloxorz
  - blubber
  - bluetile
@@ -680,6 +679,7 @@ dont-distribute-packages:
  - datadog-tracing
  - datafix
  - dataflow
+ - dataframe_0_3_0_4
  - datasets
  - date-conversions
  - dbjava
@@ -2960,7 +2960,6 @@ dont-distribute-packages:
  - rfc-psql
  - rfc-redis
  - rfc-servant
- - rhine-bayes
  - rhythm-game-tutorial
  - rib
  - ribosome
@@ -3456,7 +3455,6 @@ dont-distribute-packages:
  - tasklite
  - tasklite-core
  - tasty-bdd
- - tasty-bench-fit
  - tasty-groundhog-converters
  - tasty-integrate
  - tasty-jenkins-xml
diff --git a/pkgs/development/haskell-modules/configuration-nix.nix b/pkgs/development/haskell-modules/configuration-nix.nix
index 290706940d78..6ebd6eb8a002 100644
--- a/pkgs/development/haskell-modules/configuration-nix.nix
+++ b/pkgs/development/haskell-modules/configuration-nix.nix
@@ -1084,7 +1084,7 @@ builtins.intersectAttrs super {
     addBuildTool self.buildHaskellPackages.gtk2hs-buildtools super.pango
   );
 
-  spago =
+  spago-legacy =
     let
       docsSearchApp_0_0_10 = pkgs.fetchurl {
         url = "https://github.com/purescript/purescript-docs-search/releases/download/v0.0.10/docs-search-app.js";
@@ -1106,49 +1106,43 @@ builtins.intersectAttrs super {
         sha256 = "1hjdprm990vyxz86fgq14ajn0lkams7i00h8k2i2g1a0hjdwppq6";
       };
     in
-    lib.pipe
-      (super.spago.override {
-        # base <4.19, text <2.1
-        versions = doJailbreak self.versions_5_0_5;
-        fsnotify = self.fsnotify_0_3_0_1;
-      })
-      [
-        (overrideCabal (drv: {
-          postUnpack = (drv.postUnpack or "") + ''
-            # Spago includes the following two files directly into the binary
-            # with Template Haskell.  They are fetched at build-time from the
-            # `purescript-docs-search` repo above.  If they cannot be fetched at
-            # build-time, they are pulled in from the `templates/` directory in
-            # the spago source.
-            #
-            # However, they are not actually available in the spago source, so they
-            # need to fetched with nix and put in the correct place.
-            # https://github.com/spacchetti/spago/issues/510
-            cp ${docsSearchApp_0_0_10} "$sourceRoot/templates/docs-search-app-0.0.10.js"
-            cp ${docsSearchApp_0_0_11} "$sourceRoot/templates/docs-search-app-0.0.11.js"
-            cp ${purescriptDocsSearch_0_0_10} "$sourceRoot/templates/purescript-docs-search-0.0.10"
-            cp ${purescriptDocsSearch_0_0_11} "$sourceRoot/templates/purescript-docs-search-0.0.11"
+    lib.pipe super.spago-legacy [
+      (overrideCabal (drv: {
+        postUnpack = (drv.postUnpack or "") + ''
+          # Spago includes the following two files directly into the binary
+          # with Template Haskell.  They are fetched at build-time from the
+          # `purescript-docs-search` repo above.  If they cannot be fetched at
+          # build-time, they are pulled in from the `templates/` directory in
+          # the spago source.
+          #
+          # However, they are not actually available in the spago source, so they
+          # need to fetched with nix and put in the correct place.
+          # https://github.com/spacchetti/spago/issues/510
+          cp ${docsSearchApp_0_0_10} "$sourceRoot/templates/docs-search-app-0.0.10.js"
+          cp ${docsSearchApp_0_0_11} "$sourceRoot/templates/docs-search-app-0.0.11.js"
+          cp ${purescriptDocsSearch_0_0_10} "$sourceRoot/templates/purescript-docs-search-0.0.10"
+          cp ${purescriptDocsSearch_0_0_11} "$sourceRoot/templates/purescript-docs-search-0.0.11"
 
-            # For some weird reason, on Darwin, the open(2) call to embed these files
-            # requires write permissions. The easiest resolution is just to permit that
-            # (doesn't cause any harm on other systems).
-            chmod u+w \
-              "$sourceRoot/templates/docs-search-app-0.0.10.js" \
-              "$sourceRoot/templates/purescript-docs-search-0.0.10" \
-              "$sourceRoot/templates/docs-search-app-0.0.11.js" \
-              "$sourceRoot/templates/purescript-docs-search-0.0.11"
-          '';
-        }))
+          # For some weird reason, on Darwin, the open(2) call to embed these files
+          # requires write permissions. The easiest resolution is just to permit that
+          # (doesn't cause any harm on other systems).
+          chmod u+w \
+            "$sourceRoot/templates/docs-search-app-0.0.10.js" \
+            "$sourceRoot/templates/purescript-docs-search-0.0.10" \
+            "$sourceRoot/templates/docs-search-app-0.0.11.js" \
+            "$sourceRoot/templates/purescript-docs-search-0.0.11"
+        '';
+      }))
 
-        # Tests require network access.
-        dontCheck
+      # Tests require network access.
+      dontCheck
 
-        # Overly strict upper bound on text
-        doJailbreak
+      # Overly strict upper bound on text (<1.3)
+      doJailbreak
 
-        # Generate shell completion for spago
-        (self.generateOptparseApplicativeCompletions [ "spago" ])
-      ];
+      # Generate shell completion for spago
+      (self.generateOptparseApplicativeCompletions [ "spago" ])
+    ];
 
   # checks SQL statements at compile time, and so requires a running PostgreSQL
   # database to run it's test suite
@@ -1878,16 +1872,23 @@ builtins.intersectAttrs super {
   extensions = enableSeparateBinOutput super.extensions;
 
   # These test cases access the network
-  hpack = overrideCabal (drv: {
-    testFlags = drv.testFlags or [ ] ++ [
-      "--skip"
-      "/Hpack.Defaults/ensureFile/with 404/does not create any files/"
-      "--skip"
-      "/Hpack.Defaults/ensureFile/downloads file if missing/"
-      "--skip"
-      "/EndToEnd/hpack/defaults/fails if defaults don't exist/"
-    ];
-  }) super.hpack;
+  inherit
+    (lib.mapAttrs (
+      _:
+      overrideCabal (drv: {
+        testFlags = drv.testFlags or [ ] ++ [
+          "--skip"
+          "/Hpack.Defaults/ensureFile/with 404/does not create any files/"
+          "--skip"
+          "/Hpack.Defaults/ensureFile/downloads file if missing/"
+          "--skip"
+          "/EndToEnd/hpack/defaults/fails if defaults don't exist/"
+        ];
+      })
+    ) super)
+    hpack
+    hpack_0_38_1
+    ;
 
   doctest = overrideCabal (drv: {
     testFlags = drv.testFlags or [ ] ++ [
diff --git a/pkgs/development/haskell-modules/hackage-packages.nix b/pkgs/development/haskell-modules/hackage-packages.nix
index 687a0e3d4547..574065362823 100644
--- a/pkgs/development/haskell-modules/hackage-packages.nix
+++ b/pkgs/development/haskell-modules/hackage-packages.nix
@@ -81812,9 +81812,7 @@ self: {
       ];
       description = "Automatic Rule-Based Time Tracker";
       license = lib.licenses.gpl2Only;
-      hydraPlatforms = lib.platforms.none;
       maintainers = [ lib.maintainers.rvl ];
-      broken = true;
     }
   ) { };
 
@@ -105792,9 +105790,7 @@ self: {
       ];
       description = "Encode precise binary representations directly in types";
       license = lib.licenses.mit;
-      hydraPlatforms = lib.platforms.none;
       maintainers = [ lib.maintainers.raehik ];
-      broken = true;
     }
   ) { };
 
@@ -105816,8 +105812,6 @@ self: {
       ];
       description = "Orphan instances for binrep";
       license = lib.licenses.mit;
-      hydraPlatforms = lib.platforms.none;
-      broken = true;
     }
   ) { };
 
@@ -111569,7 +111563,6 @@ self: {
       doHaddock = false;
       description = "Classic and block-style bloom filters";
       license = lib.licenses.asl20;
-      hydraPlatforms = lib.platforms.none;
     }
   ) { };
 
@@ -123227,9 +123220,7 @@ self: {
       ];
       description = "A command line program for extracting compiler arguments from a cabal file";
       license = lib.licenses.bsd3;
-      hydraPlatforms = lib.platforms.none;
       mainProgram = "cabal-cargs";
-      broken = true;
     }
   ) { };
 
@@ -180627,9 +180618,7 @@ self: {
       ];
       description = "A fast, safe, and intuitive DataFrame library";
       license = lib.licenses.gpl3Plus;
-      hydraPlatforms = lib.platforms.none;
       mainProgram = "dataframe";
-      broken = true;
     }
   ) { };
 
@@ -189293,13 +189282,11 @@ self: {
       ];
       description = "Language Server Protocol (LSP) server for Dhall";
       license = lib.licenses.mit;
-      hydraPlatforms = lib.platforms.none;
       mainProgram = "dhall-lsp-server";
       maintainers = [
         lib.maintainers.dalpd
         lib.maintainers.Gabriella439
       ];
-      broken = true;
     }
   ) { };
 
@@ -224757,6 +224744,69 @@ self: {
     }
   ) { };
 
+  extensions_0_1_0_1 = callPackage (
+    {
+      mkDerivation,
+      base,
+      bytestring,
+      Cabal,
+      colourista,
+      containers,
+      directory,
+      filepath,
+      ghc-boot-th,
+      hedgehog,
+      hspec,
+      hspec-hedgehog,
+      optparse-applicative,
+      parsec,
+      text,
+    }:
+    mkDerivation {
+      pname = "extensions";
+      version = "0.1.0.1";
+      sha256 = "1rf6jhmms6ll7mn9rh81amzb7nd4zjqcnxdzivw50dxcrcfmdiq2";
+      revision = "1";
+      editedCabalFile = "1ixf5bpxy840zdlg3gsl3whzii03fc5j16i591pakprsvprp04hk";
+      isLibrary = true;
+      isExecutable = true;
+      libraryHaskellDepends = [
+        base
+        bytestring
+        Cabal
+        containers
+        directory
+        filepath
+        ghc-boot-th
+        parsec
+        text
+      ];
+      executableHaskellDepends = [
+        base
+        colourista
+        containers
+        directory
+        filepath
+        optparse-applicative
+        text
+      ];
+      testHaskellDepends = [
+        base
+        bytestring
+        containers
+        ghc-boot-th
+        hedgehog
+        hspec
+        hspec-hedgehog
+        text
+      ];
+      description = "Parse Haskell Language Extensions";
+      license = lib.licenses.mpl20;
+      hydraPlatforms = lib.platforms.none;
+      mainProgram = "extensions";
+    }
+  ) { };
+
   extensions = callPackage (
     {
       mkDerivation,
@@ -241039,6 +241089,114 @@ self: {
     }
   ) { };
 
+  fourmolu_0_15_0_0 = callPackage (
+    {
+      mkDerivation,
+      aeson,
+      ansi-terminal,
+      array,
+      base,
+      binary,
+      bytestring,
+      Cabal-syntax,
+      containers,
+      deepseq,
+      Diff,
+      directory,
+      file-embed,
+      filepath,
+      ghc-lib-parser,
+      hspec,
+      hspec-discover,
+      hspec-megaparsec,
+      megaparsec,
+      MemoTrie,
+      mtl,
+      optparse-applicative,
+      path,
+      path-io,
+      pretty,
+      process,
+      QuickCheck,
+      scientific,
+      syb,
+      temporary,
+      text,
+      th-env,
+      yaml,
+    }:
+    mkDerivation {
+      pname = "fourmolu";
+      version = "0.15.0.0";
+      sha256 = "11xy0k5zkhd0dz7ify0m466l90j8sblm9rzzwkc0nn0d8pxyizfq";
+      revision = "1";
+      editedCabalFile = "1a0wnrvygipxivjzjbbvl1vm4pc45p5p239z741xj9jj5kipjh9c";
+      isLibrary = true;
+      isExecutable = true;
+      libraryHaskellDepends = [
+        aeson
+        ansi-terminal
+        array
+        base
+        binary
+        bytestring
+        Cabal-syntax
+        containers
+        deepseq
+        Diff
+        directory
+        file-embed
+        filepath
+        ghc-lib-parser
+        megaparsec
+        MemoTrie
+        mtl
+        scientific
+        syb
+        text
+        yaml
+      ];
+      executableHaskellDepends = [
+        base
+        Cabal-syntax
+        containers
+        directory
+        filepath
+        ghc-lib-parser
+        optparse-applicative
+        text
+        th-env
+        yaml
+      ];
+      testHaskellDepends = [
+        base
+        bytestring
+        Cabal-syntax
+        containers
+        Diff
+        directory
+        filepath
+        ghc-lib-parser
+        hspec
+        hspec-megaparsec
+        megaparsec
+        path
+        path-io
+        pretty
+        process
+        QuickCheck
+        temporary
+        text
+        yaml
+      ];
+      testToolDepends = [ hspec-discover ];
+      description = "A formatter for Haskell source code";
+      license = lib.licenses.bsd3;
+      hydraPlatforms = lib.platforms.none;
+      mainProgram = "fourmolu";
+    }
+  ) { };
+
   fourmolu = callPackage (
     {
       mkDerivation,
@@ -245218,63 +245376,6 @@ self: {
     }
   ) { };
 
-  fsnotify_0_3_0_1 = callPackage (
-    {
-      mkDerivation,
-      async,
-      base,
-      bytestring,
-      containers,
-      directory,
-      filepath,
-      hinotify,
-      random,
-      shelly,
-      tasty,
-      tasty-hunit,
-      temporary,
-      text,
-      time,
-      unix,
-      unix-compat,
-    }:
-    mkDerivation {
-      pname = "fsnotify";
-      version = "0.3.0.1";
-      sha256 = "19bdbz9wb9jvln6yg6qm0hz0w84bypvkxf0wjhgrgd52f9gidlny";
-      revision = "3";
-      editedCabalFile = "0n5p6ljx8i5mmalkw05izjgzbqg08y7rxxn2gk8ghxlqldgqgix9";
-      libraryHaskellDepends = [
-        async
-        base
-        bytestring
-        containers
-        directory
-        filepath
-        hinotify
-        shelly
-        text
-        time
-        unix
-        unix-compat
-      ];
-      testHaskellDepends = [
-        async
-        base
-        directory
-        filepath
-        random
-        tasty
-        tasty-hunit
-        temporary
-        unix-compat
-      ];
-      description = "Cross platform library for file change notification";
-      license = lib.licenses.bsd3;
-      hydraPlatforms = lib.platforms.none;
-    }
-  ) { };
-
   fsnotify = callPackage (
     {
       mkDerivation,
@@ -258592,7 +258693,7 @@ self: {
     }
   ) { };
 
-  ghc-lib-parser_9_10_3_20250912 = callPackage (
+  ghc-lib-parser_9_8_5_20250214 = callPackage (
     {
       mkDerivation,
       alex,
@@ -258617,8 +258718,8 @@ self: {
     }:
     mkDerivation {
       pname = "ghc-lib-parser";
-      version = "9.10.3.20250912";
-      sha256 = "1ilh872nvzdvz1k9lnf3q4xwspbdgb9lcygfff1bnszf9jv14z7r";
+      version = "9.8.5.20250214";
+      sha256 = "1l07lkc4d9ryxy26fr7mry4691m0f3p0wi6b6l1jzr968hrs06cb";
       enableSeparateDataOutput = true;
       libraryHaskellDepends = [
         array
@@ -258789,7 +258890,7 @@ self: {
     }
   ) { };
 
-  ghc-lib-parser-ex_9_10_0_0 = callPackage (
+  ghc-lib-parser-ex_9_8_0_2 = callPackage (
     {
       mkDerivation,
       base,
@@ -258805,8 +258906,8 @@ self: {
     }:
     mkDerivation {
       pname = "ghc-lib-parser-ex";
-      version = "9.10.0.0";
-      sha256 = "1v4nq8nvg9bpdnqgpy8pkzb05h7f9f6m2a6bcqj3j2i9jzqv7sb6";
+      version = "9.8.0.2";
+      sha256 = "1s4ibjdzrflb2r88srmdnslj09h78xqwdn6djcnirmnka7qrf09v";
       libraryHaskellDepends = [
         base
         bytestring
@@ -258816,8 +258917,6 @@ self: {
       ];
       testHaskellDepends = [
         base
-        bytestring
-        containers
         directory
         extra
         filepath
@@ -258826,7 +258925,7 @@ self: {
         tasty-hunit
         uniplate
       ];
-      description = "Programming with GHC parse trees";
+      description = "Algorithms on GHC parse trees";
       license = lib.licenses.bsd3;
       hydraPlatforms = lib.platforms.none;
     }
@@ -332023,6 +332122,80 @@ self: {
     }
   ) { };
 
+  hlint_3_8 = callPackage (
+    {
+      mkDerivation,
+      aeson,
+      ansi-terminal,
+      base,
+      bytestring,
+      cmdargs,
+      containers,
+      cpphs,
+      data-default,
+      deriving-aeson,
+      directory,
+      extra,
+      file-embed,
+      filepath,
+      filepattern,
+      ghc-lib-parser,
+      ghc-lib-parser-ex,
+      hscolour,
+      process,
+      refact,
+      text,
+      transformers,
+      uniplate,
+      unordered-containers,
+      utf8-string,
+      vector,
+      yaml,
+    }:
+    mkDerivation {
+      pname = "hlint";
+      version = "3.8";
+      sha256 = "0x5xkd8n9idmg334kj1kky6bcl4wl8ks4i87j3r8zwp75fv3dwm8";
+      isLibrary = true;
+      isExecutable = true;
+      enableSeparateDataOutput = true;
+      libraryHaskellDepends = [
+        aeson
+        ansi-terminal
+        base
+        bytestring
+        cmdargs
+        containers
+        cpphs
+        data-default
+        deriving-aeson
+        directory
+        extra
+        file-embed
+        filepath
+        filepattern
+        ghc-lib-parser
+        ghc-lib-parser-ex
+        hscolour
+        process
+        refact
+        text
+        transformers
+        uniplate
+        unordered-containers
+        utf8-string
+        vector
+        yaml
+      ];
+      executableHaskellDepends = [ base ];
+      description = "Source code suggestions";
+      license = lib.licenses.bsd3;
+      hydraPlatforms = lib.platforms.none;
+      mainProgram = "hlint";
+      maintainers = [ lib.maintainers.maralorn ];
+    }
+  ) { };
+
   hlint = callPackage (
     {
       mkDerivation,
@@ -341276,6 +341449,141 @@ self: {
     }
   ) { };
 
+  hpack_0_38_1 = callPackage (
+    {
+      mkDerivation,
+      aeson,
+      base,
+      bifunctors,
+      bytestring,
+      Cabal,
+      containers,
+      crypton,
+      deepseq,
+      directory,
+      filepath,
+      Glob,
+      hspec,
+      hspec-discover,
+      http-client,
+      http-client-tls,
+      http-types,
+      HUnit,
+      infer-license,
+      interpolate,
+      mockery,
+      mtl,
+      pretty,
+      QuickCheck,
+      scientific,
+      template-haskell,
+      temporary,
+      text,
+      transformers,
+      unordered-containers,
+      vcr,
+      vector,
+      yaml,
+    }:
+    mkDerivation {
+      pname = "hpack";
+      version = "0.38.1";
+      sha256 = "03qygb51jb4r6sg2bkaz7k80h11wgjr27hgpx6h08xm8axdk2gba";
+      revision = "1";
+      editedCabalFile = "0dyd6pp2pk62nynp0x2j9kjddfv43p9inplk4iya7hdldyjs77k0";
+      isLibrary = true;
+      isExecutable = true;
+      libraryHaskellDepends = [
+        aeson
+        base
+        bifunctors
+        bytestring
+        Cabal
+        containers
+        crypton
+        deepseq
+        directory
+        filepath
+        Glob
+        http-client
+        http-client-tls
+        http-types
+        infer-license
+        mtl
+        pretty
+        scientific
+        text
+        transformers
+        unordered-containers
+        vector
+        yaml
+      ];
+      executableHaskellDepends = [
+        aeson
+        base
+        bifunctors
+        bytestring
+        Cabal
+        containers
+        crypton
+        deepseq
+        directory
+        filepath
+        Glob
+        http-client
+        http-client-tls
+        http-types
+        infer-license
+        mtl
+        pretty
+        scientific
+        text
+        transformers
+        unordered-containers
+        vector
+        yaml
+      ];
+      testHaskellDepends = [
+        aeson
+        base
+        bifunctors
+        bytestring
+        Cabal
+        containers
+        crypton
+        deepseq
+        directory
+        filepath
+        Glob
+        hspec
+        http-client
+        http-client-tls
+        http-types
+        HUnit
+        infer-license
+        interpolate
+        mockery
+        mtl
+        pretty
+        QuickCheck
+        scientific
+        template-haskell
+        temporary
+        text
+        transformers
+        unordered-containers
+        vcr
+        vector
+        yaml
+      ];
+      testToolDepends = [ hspec-discover ];
+      description = "A modern format for Haskell packages";
+      license = lib.licenses.mit;
+      hydraPlatforms = lib.platforms.none;
+      mainProgram = "hpack";
+    }
+  ) { };
+
   hpack = callPackage (
     {
       mkDerivation,
@@ -429996,176 +430304,6 @@ self: {
     }
   ) { inherit (pkgs) rocksdb; };
 
-  lsp_2_1_0_0 = callPackage (
-    {
-      mkDerivation,
-      aeson,
-      async,
-      attoparsec,
-      base,
-      bytestring,
-      co-log-core,
-      containers,
-      data-default,
-      directory,
-      exceptions,
-      filepath,
-      hashable,
-      hspec,
-      hspec-discover,
-      lens,
-      lsp-types,
-      mtl,
-      prettyprinter,
-      random,
-      row-types,
-      sorted-list,
-      stm,
-      temporary,
-      text,
-      text-rope,
-      transformers,
-      unliftio-core,
-      unordered-containers,
-      uuid,
-    }:
-    mkDerivation {
-      pname = "lsp";
-      version = "2.1.0.0";
-      sha256 = "03gk98fgf32blywdds0fc5351bmcbbfrnqwlg33l2ih75nwa59y8";
-      isLibrary = true;
-      isExecutable = true;
-      libraryHaskellDepends = [
-        aeson
-        async
-        attoparsec
-        base
-        bytestring
-        co-log-core
-        containers
-        data-default
-        directory
-        exceptions
-        filepath
-        hashable
-        lens
-        lsp-types
-        mtl
-        prettyprinter
-        random
-        row-types
-        sorted-list
-        stm
-        temporary
-        text
-        text-rope
-        transformers
-        unliftio-core
-        unordered-containers
-        uuid
-      ];
-      testHaskellDepends = [
-        base
-        containers
-        hspec
-        row-types
-        sorted-list
-        text
-        text-rope
-        unordered-containers
-      ];
-      testToolDepends = [ hspec-discover ];
-      description = "Haskell library for the Microsoft Language Server Protocol";
-      license = lib.licenses.mit;
-      hydraPlatforms = lib.platforms.none;
-    }
-  ) { };
-
-  lsp_2_4_0_0 = callPackage (
-    {
-      mkDerivation,
-      aeson,
-      async,
-      attoparsec,
-      base,
-      bytestring,
-      co-log-core,
-      containers,
-      data-default,
-      directory,
-      exceptions,
-      filepath,
-      hashable,
-      hspec,
-      hspec-discover,
-      lens,
-      lens-aeson,
-      lsp-types,
-      mtl,
-      prettyprinter,
-      random,
-      row-types,
-      sorted-list,
-      stm,
-      text,
-      text-rope,
-      transformers,
-      unliftio-core,
-      unordered-containers,
-      uuid,
-    }:
-    mkDerivation {
-      pname = "lsp";
-      version = "2.4.0.0";
-      sha256 = "1ggfw2wp9g9fpg9x3kj9zh6l6p2yiw4q0v1gzxjg0mcmvp4aad8w";
-      isLibrary = true;
-      isExecutable = true;
-      libraryHaskellDepends = [
-        aeson
-        async
-        attoparsec
-        base
-        bytestring
-        co-log-core
-        containers
-        data-default
-        directory
-        exceptions
-        filepath
-        hashable
-        lens
-        lens-aeson
-        lsp-types
-        mtl
-        prettyprinter
-        random
-        row-types
-        sorted-list
-        stm
-        text
-        text-rope
-        transformers
-        unliftio-core
-        unordered-containers
-        uuid
-      ];
-      testHaskellDepends = [
-        base
-        containers
-        hspec
-        row-types
-        sorted-list
-        text
-        text-rope
-        unordered-containers
-      ];
-      testToolDepends = [ hspec-discover ];
-      description = "Haskell library for the Microsoft Language Server Protocol";
-      license = lib.licenses.mit;
-      hydraPlatforms = lib.platforms.none;
-    }
-  ) { };
-
   lsp = callPackage (
     {
       mkDerivation,
@@ -430429,109 +430567,6 @@ self: {
     }
   ) { };
 
-  lsp-types_2_1_1_0 = callPackage (
-    {
-      mkDerivation,
-      aeson,
-      base,
-      binary,
-      containers,
-      data-default,
-      deepseq,
-      Diff,
-      directory,
-      dlist,
-      exceptions,
-      file-embed,
-      filepath,
-      generic-arbitrary,
-      hashable,
-      hspec,
-      hspec-discover,
-      indexed-traversable,
-      indexed-traversable-instances,
-      lens,
-      lens-aeson,
-      mod,
-      mtl,
-      network-uri,
-      prettyprinter,
-      QuickCheck,
-      quickcheck-instances,
-      regex,
-      row-types,
-      safe,
-      some,
-      template-haskell,
-      text,
-    }:
-    mkDerivation {
-      pname = "lsp-types";
-      version = "2.1.1.0";
-      sha256 = "0gsr0v11xfav7dnq4d433y9ca0snmqaax4pp5sgmf33zl8qhi6s0";
-      isLibrary = true;
-      isExecutable = true;
-      libraryHaskellDepends = [
-        aeson
-        base
-        binary
-        containers
-        data-default
-        deepseq
-        Diff
-        dlist
-        exceptions
-        file-embed
-        filepath
-        generic-arbitrary
-        hashable
-        indexed-traversable
-        indexed-traversable-instances
-        lens
-        lens-aeson
-        mod
-        mtl
-        network-uri
-        prettyprinter
-        QuickCheck
-        quickcheck-instances
-        row-types
-        safe
-        some
-        template-haskell
-        text
-      ];
-      executableHaskellDepends = [
-        base
-        containers
-        directory
-        filepath
-        mtl
-        prettyprinter
-        regex
-        text
-      ];
-      testHaskellDepends = [
-        aeson
-        base
-        filepath
-        hspec
-        lens
-        network-uri
-        QuickCheck
-        quickcheck-instances
-        row-types
-        text
-      ];
-      testToolDepends = [ hspec-discover ];
-      doHaddock = false;
-      description = "Haskell library for the Microsoft Language Server Protocol, data types";
-      license = lib.licenses.mit;
-      hydraPlatforms = lib.platforms.none;
-      mainProgram = "generator";
-    }
-  ) { };
-
   lsp-types = callPackage (
     {
       mkDerivation,
@@ -453476,10 +453511,8 @@ self: {
       ];
       description = "A library for probabilistic programming";
       license = lib.licenses.mit;
-      hydraPlatforms = lib.platforms.none;
       mainProgram = "example";
       maintainers = [ lib.maintainers.turion ];
-      broken = true;
     }
   ) { };
 
@@ -496492,6 +496525,100 @@ self: {
     }
   ) { };
 
+  ormolu_0_7_4_0 = callPackage (
+    {
+      mkDerivation,
+      ansi-terminal,
+      array,
+      base,
+      binary,
+      bytestring,
+      Cabal-syntax,
+      containers,
+      deepseq,
+      Diff,
+      directory,
+      file-embed,
+      filepath,
+      ghc-lib-parser,
+      hspec,
+      hspec-discover,
+      hspec-megaparsec,
+      megaparsec,
+      MemoTrie,
+      mtl,
+      optparse-applicative,
+      path,
+      path-io,
+      QuickCheck,
+      syb,
+      temporary,
+      text,
+      th-env,
+    }:
+    mkDerivation {
+      pname = "ormolu";
+      version = "0.7.4.0";
+      sha256 = "1s7a9crjhbsmjkdvpv8ycygpiikv96s96p3lmjik4pb3q7idir2z";
+      revision = "5";
+      editedCabalFile = "107p02xhq0gfacc6j8kackqn16a0wnayq7qpi26acvzqqyxhcjxy";
+      isLibrary = true;
+      isExecutable = true;
+      libraryHaskellDepends = [
+        ansi-terminal
+        array
+        base
+        binary
+        bytestring
+        Cabal-syntax
+        containers
+        deepseq
+        Diff
+        directory
+        file-embed
+        filepath
+        ghc-lib-parser
+        megaparsec
+        MemoTrie
+        mtl
+        syb
+        text
+      ];
+      executableHaskellDepends = [
+        base
+        Cabal-syntax
+        containers
+        directory
+        filepath
+        ghc-lib-parser
+        optparse-applicative
+        text
+        th-env
+      ];
+      testHaskellDepends = [
+        base
+        Cabal-syntax
+        containers
+        directory
+        filepath
+        ghc-lib-parser
+        hspec
+        hspec-megaparsec
+        megaparsec
+        path
+        path-io
+        QuickCheck
+        temporary
+        text
+      ];
+      testToolDepends = [ hspec-discover ];
+      description = "A formatter for Haskell source code";
+      license = lib.licenses.bsd3;
+      hydraPlatforms = lib.platforms.none;
+      mainProgram = "ormolu";
+    }
+  ) { };
+
   ormolu = callPackage (
     {
       mkDerivation,
@@ -500551,9 +500678,7 @@ self: {
       doHaddock = false;
       description = "Pandoc filter for cross-references";
       license = lib.licenses.gpl2Only;
-      hydraPlatforms = lib.platforms.none;
       mainProgram = "pandoc-crossref";
-      broken = true;
     }
   ) { };
 
@@ -507229,10 +507354,8 @@ self: {
       ];
       description = "Terminal-based presentations using Pandoc";
       license = lib.licenses.gpl2Only;
-      hydraPlatforms = lib.platforms.none;
       mainProgram = "patat";
       maintainers = [ lib.maintainers.dalpd ];
-      broken = true;
     }
   ) { };
 
@@ -507415,6 +507538,60 @@ self: {
     }
   ) { };
 
+  path_0_9_5 = callPackage (
+    {
+      mkDerivation,
+      aeson,
+      base,
+      bytestring,
+      deepseq,
+      exceptions,
+      filepath,
+      genvalidity,
+      genvalidity-hspec,
+      genvalidity-property,
+      hashable,
+      hspec,
+      mtl,
+      QuickCheck,
+      template-haskell,
+      text,
+      validity,
+    }:
+    mkDerivation {
+      pname = "path";
+      version = "0.9.5";
+      sha256 = "0cy4vilmhzhi5nfh4v2kyvizhjzjpjib3bvgm1sgmvjzj40dfgrd";
+      libraryHaskellDepends = [
+        aeson
+        base
+        deepseq
+        exceptions
+        filepath
+        hashable
+        template-haskell
+        text
+      ];
+      testHaskellDepends = [
+        aeson
+        base
+        bytestring
+        filepath
+        genvalidity
+        genvalidity-hspec
+        genvalidity-property
+        hspec
+        mtl
+        QuickCheck
+        template-haskell
+        validity
+      ];
+      description = "Support for well-typed paths";
+      license = lib.licenses.bsd3;
+      hydraPlatforms = lib.platforms.none;
+    }
+  ) { };
+
   path = callPackage (
     {
       mkDerivation,
@@ -567638,8 +567815,6 @@ self: {
       ];
       description = "Simple linear and quadratic regression";
       license = lib.licenses.bsd3;
-      hydraPlatforms = lib.platforms.none;
-      broken = true;
     }
   ) { };
 
@@ -574591,7 +574766,6 @@ self: {
       ];
       description = "monad-bayes backend for Rhine";
       license = lib.licenses.bsd3;
-      hydraPlatforms = lib.platforms.none;
       mainProgram = "rhine-bayes-gloss";
     }
   ) { };
@@ -644423,6 +644597,105 @@ self: {
     }
   ) { };
 
+  stylish-haskell_0_14_6_0 = callPackage (
+    {
+      mkDerivation,
+      aeson,
+      base,
+      bytestring,
+      Cabal,
+      containers,
+      directory,
+      file-embed,
+      filepath,
+      ghc-lib-parser,
+      ghc-lib-parser-ex,
+      HsYAML,
+      HsYAML-aeson,
+      HUnit,
+      mtl,
+      optparse-applicative,
+      random,
+      regex-tdfa,
+      strict,
+      syb,
+      test-framework,
+      test-framework-hunit,
+      text,
+    }:
+    mkDerivation {
+      pname = "stylish-haskell";
+      version = "0.14.6.0";
+      sha256 = "1v72i3dxn30z832cs19sbnj5p40y873sv4kciaivd0ls7i5mm8vb";
+      isLibrary = true;
+      isExecutable = true;
+      libraryHaskellDepends = [
+        aeson
+        base
+        bytestring
+        Cabal
+        containers
+        directory
+        file-embed
+        filepath
+        ghc-lib-parser
+        ghc-lib-parser-ex
+        HsYAML
+        HsYAML-aeson
+        mtl
+        regex-tdfa
+        syb
+        text
+      ];
+      executableHaskellDepends = [
+        aeson
+        base
+        bytestring
+        Cabal
+        containers
+        directory
+        file-embed
+        filepath
+        ghc-lib-parser
+        ghc-lib-parser-ex
+        HsYAML
+        HsYAML-aeson
+        mtl
+        optparse-applicative
+        regex-tdfa
+        strict
+        syb
+        text
+      ];
+      testHaskellDepends = [
+        aeson
+        base
+        bytestring
+        Cabal
+        containers
+        directory
+        file-embed
+        filepath
+        ghc-lib-parser
+        ghc-lib-parser-ex
+        HsYAML
+        HsYAML-aeson
+        HUnit
+        mtl
+        random
+        regex-tdfa
+        syb
+        test-framework
+        test-framework-hunit
+        text
+      ];
+      description = "Haskell code prettifier";
+      license = lib.licenses.bsd3;
+      hydraPlatforms = lib.platforms.none;
+      mainProgram = "stylish-haskell";
+    }
+  ) { };
+
   stylish-haskell_0_15_0_1 = callPackage (
     {
       mkDerivation,
@@ -658585,7 +658858,6 @@ self: {
       ];
       description = "Determine time complexity of a given function";
       license = lib.licenses.mit;
-      hydraPlatforms = lib.platforms.none;
     }
   ) { };
 
@@ -707723,49 +707995,6 @@ self: {
     }
   ) { };
 
-  versions_5_0_5 = callPackage (
-    {
-      mkDerivation,
-      base,
-      deepseq,
-      hashable,
-      megaparsec,
-      microlens,
-      parser-combinators,
-      QuickCheck,
-      tasty,
-      tasty-hunit,
-      tasty-quickcheck,
-      text,
-    }:
-    mkDerivation {
-      pname = "versions";
-      version = "5.0.5";
-      sha256 = "01kn3ilizzm5n05nz0qry1vjb6bj8dzinyqn3mbshds298acn70c";
-      libraryHaskellDepends = [
-        base
-        deepseq
-        hashable
-        megaparsec
-        parser-combinators
-        text
-      ];
-      testHaskellDepends = [
-        base
-        megaparsec
-        microlens
-        QuickCheck
-        tasty
-        tasty-hunit
-        tasty-quickcheck
-        text
-      ];
-      description = "Types and parsers for software version numbers";
-      license = lib.licenses.bsd3;
-      hydraPlatforms = lib.platforms.none;
-    }
-  ) { };
-
   versions = callPackage (
     {
       mkDerivation,
diff --git a/pkgs/development/haskell-modules/non-hackage-packages.nix b/pkgs/development/haskell-modules/non-hackage-packages.nix
index d13f5d6b8c96..e0cd3a7ac2e9 100644
--- a/pkgs/development/haskell-modules/non-hackage-packages.nix
+++ b/pkgs/development/haskell-modules/non-hackage-packages.nix
@@ -45,9 +45,9 @@ self: super:
   # https://github.com/channable/vaultenv/issues/1 krank:ignore-line
   vaultenv = self.callPackage ../tools/haskell/vaultenv { };
 
-  # spago(-legacy) won't be released to Hackage:
+  # spago-legacy won't be released to Hackage:
   # https://github.com/spacchetti/spago/issues/512 krank:ignore-line
-  spago = self.callPackage ../tools/purescript/spago/spago.nix { };
+  spago-legacy = self.callPackage ../../by-name/sp/spago-legacy/spago-legacy.nix { };
 
   # Unofficial fork until PRs are merged https://github.com/pcapriotti/optparse-applicative/pulls/roberth
   # cabal2nix --maintainer roberth https://github.com/hercules-ci/optparse-applicative.git > pkgs/development/misc/haskell/hercules-ci-optparse-applicative.nix
diff --git a/pkgs/development/tools/haskell/ihaskell/wrapper.nix b/pkgs/development/tools/haskell/ihaskell/wrapper.nix
index 02de6f6e1ab4..f1c947d83097 100644
--- a/pkgs/development/tools/haskell/ihaskell/wrapper.nix
+++ b/pkgs/development/tools/haskell/ihaskell/wrapper.nix
@@ -14,9 +14,7 @@ let
     [
       self.ihaskell
       self.ihaskell-blaze
-      # Doesn't work with latest ihaskell versions missing an unrelated change
-      # https://github.com/IHaskell/IHaskell/issues/1378
-      # self.ihaskell-diagrams
+      self.ihaskell-diagrams
     ]
     ++ packages self
   );
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 928c06da2bea..f5260f75c7af 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -2380,6 +2380,7 @@ mapAliases {
   soundOfSorting = sound-of-sorting; # Added 2023-07-07
   SP800-90B_EntropyAssessment = sp800-90b-entropyassessment; # Added on 2024-06-12
   SPAdes = spades; # Added 2024-06-12
+  spago = spago-legacy; # Added 2025-09-23, pkgs.spago should become spago@next which hasn't been packaged yet
   spark2014 = gnatprove; # Added 2024-02-25
   space-orbit = throw "'space-orbit' has been removed because it is unmaintained; Debian upstream stopped tracking it in 2011."; # Added 2025-06-08
   spatialite_gui = throw "spatialite_gui has been renamed to spatialite-gui"; # Added 2025-01-12
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 6994da0248f2..766064d20cd1 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -5092,8 +5092,6 @@ with pkgs;
 
   purenix = haskell.lib.compose.justStaticExecutables haskellPackages.purenix;
 
-  spago = callPackage ../development/tools/purescript/spago { };
-
   pulp = nodePackages.pulp;
 
   pscid = nodePackages.pscid;
diff --git a/pkgs/top-level/release-haskell.nix b/pkgs/top-level/release-haskell.nix
index 1f3d4be32d0c..12a169d57b2b 100644
--- a/pkgs/top-level/release-haskell.nix
+++ b/pkgs/top-level/release-haskell.nix
@@ -335,7 +335,7 @@ let
         shellcheck-minimal
         sourceAndTags
         spacecookie
-        spago
+        spago-legacy
         specup
         splot
         stack