diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index 611919a354e9..c64039f95793 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -255,10 +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
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/main.yaml b/pkgs/development/haskell-modules/configuration-hackage2nix/main.yaml
index 7f8e037af806..ea7be8f72bcf 100644
--- a/pkgs/development/haskell-modules/configuration-hackage2nix/main.yaml
+++ b/pkgs/development/haskell-modules/configuration-hackage2nix/main.yaml
@@ -60,7 +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
+  - fourmolu == 0.15.0.0                # 2025-09-21: for ghc-lib-parser 9.8 compat
   - fsnotify < 0.4                      # 2024-04-22: required by spago-0.21
   - fuzzyset == 0.2.4                   # 2023-12-20: Needed for building postgrest > 10
   - ghc-exactprint == 0.6.*             # 2022-12-12: needed for GHC < 9.2
@@ -74,10 +76,10 @@ 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.*
@@ -91,13 +93,16 @@ 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
   - 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
@@ -106,6 +111,7 @@ 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)
diff --git a/pkgs/development/haskell-modules/hackage-packages.nix b/pkgs/development/haskell-modules/hackage-packages.nix
index fc676dfd1df5..1aa2eb2b9c29 100644
--- a/pkgs/development/haskell-modules/hackage-packages.nix
+++ b/pkgs/development/haskell-modules/hackage-packages.nix
@@ -224744,6 +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,
@@ -241026,6 +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,
@@ -258579,7 +258750,7 @@ self: {
     }
   ) { };
 
-  ghc-lib-parser_9_10_3_20250912 = callPackage (
+  ghc-lib-parser_9_8_5_20250214 = callPackage (
     {
       mkDerivation,
       alex,
@@ -258604,8 +258775,8 @@ self: {
     }:
     mkDerivation {
       pname = "ghc-lib-parser";
-      version = "9.10.3.20250912";
-      sha256 = "1ilh872nvzdvz1k9lnf3q4xwspbdgb9lcygfff1bnszf9jv14z7r";
+      version = "9.8.5.20250214";
+      sha256 = "1l07lkc4d9ryxy26fr7mry4691m0f3p0wi6b6l1jzr968hrs06cb";
       enableSeparateDataOutput = true;
       libraryHaskellDepends = [
         array
@@ -258776,7 +258947,7 @@ self: {
     }
   ) { };
 
-  ghc-lib-parser-ex_9_10_0_0 = callPackage (
+  ghc-lib-parser-ex_9_8_0_2 = callPackage (
     {
       mkDerivation,
       base,
@@ -258792,8 +258963,8 @@ self: {
     }:
     mkDerivation {
       pname = "ghc-lib-parser-ex";
-      version = "9.10.0.0";
-      sha256 = "1v4nq8nvg9bpdnqgpy8pkzb05h7f9f6m2a6bcqj3j2i9jzqv7sb6";
+      version = "9.8.0.2";
+      sha256 = "1s4ibjdzrflb2r88srmdnslj09h78xqwdn6djcnirmnka7qrf09v";
       libraryHaskellDepends = [
         base
         bytestring
@@ -258803,8 +258974,6 @@ self: {
       ];
       testHaskellDepends = [
         base
-        bytestring
-        containers
         directory
         extra
         filepath
@@ -258813,7 +258982,7 @@ self: {
         tasty-hunit
         uniplate
       ];
-      description = "Programming with GHC parse trees";
+      description = "Algorithms on GHC parse trees";
       license = lib.licenses.bsd3;
       hydraPlatforms = lib.platforms.none;
     }
@@ -332010,6 +332179,80 @@ 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,
@@ -496339,6 +496582,100 @@ 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,
@@ -507258,6 +507595,60 @@ 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,
@@ -644263,6 +644654,105 @@ 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,