diff --git a/pkgs/development/compilers/elm/default.nix b/pkgs/development/compilers/elm/default.nix
index e5ccffc7e76a..1005bd27469a 100644
--- a/pkgs/development/compilers/elm/default.nix
+++ b/pkgs/development/compilers/elm/default.nix
@@ -7,7 +7,8 @@ let
 
   fetchElmDeps = pkgs.callPackage ./fetchElmDeps.nix { };
 
-  hsPkgs = self: pkgs.haskell.packages.ghc810.override {
+  # Haskell packages that require ghc 8.10
+  hs810Pkgs = self: pkgs.haskell.packages.ghc810.override {
     overrides = self: super: with pkgs.haskell.lib.compose; with lib;
     let elmPkgs = rec {
       elm = overrideCabal (drv: {
@@ -31,20 +32,6 @@ let
         maintainers = with maintainers; [ domenkozar turbomack ];
       }) (self.callPackage ./packages/elm.nix { });
 
-      /*
-      The elm-format expression is updated via a script in the https://github.com/avh4/elm-format repo:
-      `package/nix/build.sh`
-      */
-      elm-format = justStaticExecutables (overrideCabal (drv: {
-        jailbreak = true;
-        doCheck = assert (drv.version == "0.8.5"); false; # golden tests fail with optparse-applicative 0.17
-
-        description = "Formats Elm source code according to a standard set of rules based on the official Elm Style Guide";
-        homepage = "https://github.com/avh4/elm-format";
-        license = licenses.bsd3;
-        maintainers = with maintainers; [ avh4 turbomack ];
-      }) (self.callPackage ./packages/elm-format.nix {}));
-
       elmi-to-json = justStaticExecutables (overrideCabal (drv: {
         prePatch = ''
           substituteInPlace package.yaml --replace "- -Werror" ""
@@ -84,23 +71,48 @@ let
       # aeson 2.0.3.0 does not build with attoparsec_0_13_2_5
       aeson = self.aeson_1_5_6_0;
 
-      # Needed for elm-format
+      # elm-instrument needs this
       indents = self.callPackage ./packages/indents.nix {};
-      bimap = self.callPackage ./packages/bimap.nix {};
+
+      # elm-instrument's tests depend on an old version of elm-format, but we set doCheck to false for other reasons above
+      elm-format = null;
+    };
+  };
+
+  # Haskell packages that require ghc 9.2
+  hs92Pkgs = self: pkgs.haskell.packages.ghc92.override {
+    overrides = self: super: with pkgs.haskell.lib.compose; with lib;
+    let elmPkgs = rec {
+      /*
+      The elm-format expression is updated via a script in the https://github.com/avh4/elm-format repo:
+      `package/nix/build.sh`
+      */
+      elm-format = justStaticExecutables (overrideCabal (drv: {
+        jailbreak = true;
+
+        description = "Formats Elm source code according to a standard set of rules based on the official Elm Style Guide";
+        homepage = "https://github.com/avh4/elm-format";
+        license = licenses.bsd3;
+        maintainers = with maintainers; [ avh4 turbomack ];
+      }) (self.callPackage ./packages/elm-format.nix {}));
+    };
+    in elmPkgs // {
+      inherit elmPkgs;
+
+      # Needed for elm-format
       avh4-lib = doJailbreak (self.callPackage ./packages/avh4-lib.nix {});
       elm-format-lib = doJailbreak (self.callPackage ./packages/elm-format-lib.nix {});
-      # We need tasty-hspec < 1.1.7 and hspec-golden < 0.2 to build elm-format-lib
-      tasty-hspec = self.tasty-hspec_1_1_6;
-      hspec-golden = self.hspec-golden_0_1_0_3;
-
-      # We need hspec hspec_core, hspec_discover < 2.8 for tasty-hspec == 1.1.6
-      hspec = self.hspec_2_7_10;
-      hspec-core = self.hspec-core_2_7_10;
-      hspec-discover = self.hspec-discover_2_7_10;
-      hspec-meta = self.hspec-meta_2_7_8;
-
       elm-format-test-lib = self.callPackage ./packages/elm-format-test-lib.nix {};
       elm-format-markdown = self.callPackage ./packages/elm-format-markdown.nix {};
+
+      # elm-format requires text >= 2.0
+      text = self.text_2_0_1;
+      # elm-format-lib requires hspec-golden < 0.2
+      hspec-golden = self.hspec-golden_0_1_0_3;
+      # unorderd-container's tests indirectly depend on text < 2.0
+      unordered-containers = overrideCabal (drv: { doCheck = false; }) super.unordered-containers;
+      # relude-1.1.0.0's tests depend on hedgehog < 1.2, which indirectly depends on text < 2.0
+      relude = overrideCabal (drv: { doCheck = false; }) super.relude;
     };
   };
 
@@ -122,7 +134,7 @@ in lib.makeScope pkgs.newScope (self: with self; {
         `patchNpmElm` function also defined in `packages/lib.nix`.
   */
   elmLib = let
-    hsElmPkgs = hsPkgs self;
+    hsElmPkgs = hs810Pkgs self;
   in import ./packages/lib.nix {
     inherit lib;
     inherit (pkgs) writeScriptBin stdenv;
@@ -141,7 +153,7 @@ in lib.makeScope pkgs.newScope (self: with self; {
       maintainers = [ maintainers.turbomack ];
     };
   };
-} // (hsPkgs self).elmPkgs // (with elmLib; with (hsPkgs self).elmPkgs; {
+} // (hs810Pkgs self).elmPkgs // (hs92Pkgs self).elmPkgs // (with elmLib; with (hs810Pkgs self).elmPkgs; {
   elm-verify-examples = patchBinwrap [elmi-to-json] nodePkgs.elm-verify-examples // {
     meta = with lib; nodePkgs.elm-verify-examples.meta // {
       description = "Verify examples in your docs";
diff --git a/pkgs/development/compilers/elm/packages/avh4-lib.nix b/pkgs/development/compilers/elm/packages/avh4-lib.nix
index cd3df7d67a96..96ee35af27c9 100644
--- a/pkgs/development/compilers/elm/packages/avh4-lib.nix
+++ b/pkgs/development/compilers/elm/packages/avh4-lib.nix
@@ -1,26 +1,26 @@
 { mkDerivation, ansi-terminal, ansi-wl-pprint, array, base, bimap
 , binary, bytestring, containers, directory, fetchgit, filepath
-, lib, mtl, process, relude, tasty, tasty-discover, tasty-hspec
-, tasty-hunit, text
+, lib, mtl, pooled-io, process, relude, tasty, tasty-discover
+, tasty-hspec, tasty-hunit, text
 }:
 mkDerivation {
   pname = "avh4-lib";
   version = "0.0.0.1";
   src = fetchgit {
     url = "https://github.com/avh4/elm-format";
-    sha256 = "0bcjkcs1dy1csz0mpk7d4b5wf93fsj9p86x8fp42mb0pipdd0bh6";
-    rev = "80f15d85ee71e1663c9b53903f2b5b2aa444a3be";
+    sha256 = "1aiq3mv2ycv6bal5hnz6k33bzmnnidzxxs5b6z9y6lvmr0lbf3j4";
+    rev = "7e80dd48dd9b30994e43f4804b2ea7118664e8e0";
     fetchSubmodules = true;
   };
   postUnpack = "sourceRoot+=/avh4-lib; echo source root reset to $sourceRoot";
   libraryHaskellDepends = [
     ansi-terminal ansi-wl-pprint array base bimap binary bytestring
-    containers directory filepath mtl process relude text
+    containers directory filepath mtl pooled-io process relude text
   ];
   testHaskellDepends = [
     ansi-terminal ansi-wl-pprint array base bimap binary bytestring
-    containers directory filepath mtl process relude tasty tasty-hspec
-    tasty-hunit text
+    containers directory filepath mtl pooled-io process relude tasty
+    tasty-hspec tasty-hunit text
   ];
   testToolDepends = [ tasty-discover ];
   doHaddock = false;
diff --git a/pkgs/development/compilers/elm/packages/elm-format-lib.nix b/pkgs/development/compilers/elm/packages/elm-format-lib.nix
index 7beb52e8006e..255e43af6917 100644
--- a/pkgs/development/compilers/elm/packages/elm-format-lib.nix
+++ b/pkgs/development/compilers/elm/packages/elm-format-lib.nix
@@ -1,30 +1,30 @@
-{ mkDerivation, ansi-terminal, ansi-wl-pprint, array, avh4-lib
-, base, bimap, binary, bytestring, containers, directory
+{ mkDerivation, aeson, ansi-terminal, ansi-wl-pprint, array
+, avh4-lib, base, bimap, binary, bytestring, containers, directory
 , elm-format-markdown, elm-format-test-lib, fetchgit, filepath
-, indents, json, lib, mtl, optparse-applicative, parsec, process
-, relude, split, tasty, tasty-discover, tasty-hspec, tasty-hunit
-, text
+, ghc-prim, hspec, lib, mtl, optparse-applicative, process, relude
+, split, tasty, tasty-discover, tasty-hspec, tasty-hunit, text
 }:
 mkDerivation {
   pname = "elm-format-lib";
   version = "0.0.0.1";
   src = fetchgit {
     url = "https://github.com/avh4/elm-format";
-    sha256 = "0bcjkcs1dy1csz0mpk7d4b5wf93fsj9p86x8fp42mb0pipdd0bh6";
-    rev = "80f15d85ee71e1663c9b53903f2b5b2aa444a3be";
+    sha256 = "1aiq3mv2ycv6bal5hnz6k33bzmnnidzxxs5b6z9y6lvmr0lbf3j4";
+    rev = "7e80dd48dd9b30994e43f4804b2ea7118664e8e0";
     fetchSubmodules = true;
   };
   postUnpack = "sourceRoot+=/elm-format-lib; echo source root reset to $sourceRoot";
   libraryHaskellDepends = [
-    ansi-terminal ansi-wl-pprint array avh4-lib base bimap binary
+    aeson ansi-terminal ansi-wl-pprint array avh4-lib base bimap binary
     bytestring containers directory elm-format-markdown filepath
-    indents json mtl optparse-applicative parsec process relude text
+    ghc-prim mtl optparse-applicative process relude text
   ];
   testHaskellDepends = [
-    ansi-terminal ansi-wl-pprint array avh4-lib base bimap binary
+    aeson ansi-terminal ansi-wl-pprint array avh4-lib base bimap binary
     bytestring containers directory elm-format-markdown
-    elm-format-test-lib filepath indents json mtl optparse-applicative
-    parsec process relude split tasty tasty-hspec tasty-hunit text
+    elm-format-test-lib filepath ghc-prim hspec mtl
+    optparse-applicative process relude split tasty tasty-hspec
+    tasty-hunit text
   ];
   testToolDepends = [ tasty-discover ];
   doHaddock = false;
diff --git a/pkgs/development/compilers/elm/packages/elm-format-markdown.nix b/pkgs/development/compilers/elm/packages/elm-format-markdown.nix
index ae3b40347dbb..f5cc03c95326 100644
--- a/pkgs/development/compilers/elm/packages/elm-format-markdown.nix
+++ b/pkgs/development/compilers/elm/packages/elm-format-markdown.nix
@@ -4,8 +4,8 @@ mkDerivation {
   version = "0.0.0.1";
   src = fetchgit {
     url = "https://github.com/avh4/elm-format";
-    sha256 = "0bcjkcs1dy1csz0mpk7d4b5wf93fsj9p86x8fp42mb0pipdd0bh6";
-    rev = "80f15d85ee71e1663c9b53903f2b5b2aa444a3be";
+    sha256 = "1aiq3mv2ycv6bal5hnz6k33bzmnnidzxxs5b6z9y6lvmr0lbf3j4";
+    rev = "7e80dd48dd9b30994e43f4804b2ea7118664e8e0";
     fetchSubmodules = true;
   };
   postUnpack = "sourceRoot+=/elm-format-markdown; echo source root reset to $sourceRoot";
diff --git a/pkgs/development/compilers/elm/packages/elm-format-test-lib.nix b/pkgs/development/compilers/elm/packages/elm-format-test-lib.nix
index 729c2d678fce..6dd8598be32b 100644
--- a/pkgs/development/compilers/elm/packages/elm-format-test-lib.nix
+++ b/pkgs/development/compilers/elm/packages/elm-format-test-lib.nix
@@ -1,24 +1,24 @@
 { mkDerivation, avh4-lib, base, containers, fetchgit, filepath
-, hspec-core, hspec-golden, lib, mtl, split, tasty, tasty-discover
-, tasty-hspec, tasty-hunit, text
+, hspec, hspec-core, hspec-golden, lib, mtl, split, tasty
+, tasty-discover, tasty-hspec, tasty-hunit, text
 }:
 mkDerivation {
   pname = "elm-format-test-lib";
   version = "0.0.0.1";
   src = fetchgit {
     url = "https://github.com/avh4/elm-format";
-    sha256 = "0bcjkcs1dy1csz0mpk7d4b5wf93fsj9p86x8fp42mb0pipdd0bh6";
-    rev = "80f15d85ee71e1663c9b53903f2b5b2aa444a3be";
+    sha256 = "1aiq3mv2ycv6bal5hnz6k33bzmnnidzxxs5b6z9y6lvmr0lbf3j4";
+    rev = "7e80dd48dd9b30994e43f4804b2ea7118664e8e0";
     fetchSubmodules = true;
   };
   postUnpack = "sourceRoot+=/elm-format-test-lib; echo source root reset to $sourceRoot";
   libraryHaskellDepends = [
-    avh4-lib base containers filepath hspec-core hspec-golden mtl split
-    tasty tasty-hspec tasty-hunit text
+    avh4-lib base containers filepath hspec hspec-core hspec-golden mtl
+    split tasty tasty-hspec tasty-hunit text
   ];
   testHaskellDepends = [
-    avh4-lib base containers filepath hspec-core hspec-golden mtl split
-    tasty tasty-hspec tasty-hunit text
+    avh4-lib base containers filepath hspec hspec-core hspec-golden mtl
+    split tasty tasty-hspec tasty-hunit text
   ];
   testToolDepends = [ tasty-discover ];
   doHaddock = false;
diff --git a/pkgs/development/compilers/elm/packages/elm-format.nix b/pkgs/development/compilers/elm/packages/elm-format.nix
index 6b583a6edde2..1f88650bd3f6 100644
--- a/pkgs/development/compilers/elm/packages/elm-format.nix
+++ b/pkgs/development/compilers/elm/packages/elm-format.nix
@@ -1,33 +1,35 @@
-{ mkDerivation, ansi-wl-pprint, avh4-lib, base, bimap, cmark
-, containers, elm-format-lib, elm-format-test-lib, fetchgit, json
-, lib, mtl, optparse-applicative, parsec, QuickCheck, quickcheck-io
-, relude, tasty, tasty-hspec, tasty-hunit, tasty-quickcheck, text
+{ mkDerivation, aeson, ansi-wl-pprint, avh4-lib, base, bimap
+, bytestring, containers, elm-format-lib, elm-format-test-lib
+, fetchgit, hspec, lib, mtl, optparse-applicative, QuickCheck
+, quickcheck-io, relude, tasty, tasty-hspec, tasty-hunit
+, tasty-quickcheck, text
 }:
 mkDerivation rec {
   pname = "elm-format";
-  version = "0.8.5";
+  version = "0.8.6";
   src = fetchgit {
     url = "https://github.com/avh4/elm-format";
-    sha256 = "0bcjkcs1dy1csz0mpk7d4b5wf93fsj9p86x8fp42mb0pipdd0bh6";
-    rev = "80f15d85ee71e1663c9b53903f2b5b2aa444a3be";
+    sha256 = "1aiq3mv2ycv6bal5hnz6k33bzmnnidzxxs5b6z9y6lvmr0lbf3j4";
+    rev = "7e80dd48dd9b30994e43f4804b2ea7118664e8e0";
     fetchSubmodules = true;
   };
   isLibrary = false;
   isExecutable = true;
   executableHaskellDepends = [
-    ansi-wl-pprint avh4-lib base containers elm-format-lib json
-    optparse-applicative relude text
+    aeson ansi-wl-pprint avh4-lib base bytestring containers
+    elm-format-lib optparse-applicative relude text
   ];
   testHaskellDepends = [
-    ansi-wl-pprint avh4-lib base bimap cmark containers elm-format-lib
-    elm-format-test-lib json mtl optparse-applicative parsec QuickCheck
-    quickcheck-io relude tasty tasty-hspec tasty-hunit tasty-quickcheck
-    text
+    aeson ansi-wl-pprint avh4-lib base bimap bytestring containers
+    elm-format-lib elm-format-test-lib hspec mtl optparse-applicative
+    QuickCheck quickcheck-io relude tasty tasty-hspec tasty-hunit
+    tasty-quickcheck text
   ];
   doHaddock = false;
   homepage = "https://elm-lang.org";
   description = "A source code formatter for Elm";
   license = lib.licenses.bsd3;
+  mainProgram = "elm-format";
   postPatch = ''
     mkdir -p ./generated
     cat <<EOHS > ./generated/Build_elm_format.hs