diff --git a/.github/workflows/haskell.yml b/.github/workflows/haskell.yml
index 18e3b80..6b463f8 100644
--- a/.github/workflows/haskell.yml
+++ b/.github/workflows/haskell.yml
@@ -14,17 +14,19 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        cabal: ["3.8"]
-        ghc: ["8.6.5", "8.8.4", "8.10.7", "9.0.2", "9.2.4", "9.4.2"]
+        ghc: ["8.8", "8.10", "9.0", "9.2", "9.4", "9.6"]
+    concurrency:
+      group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}-${{matrix.ghc}}
+      cancel-in-progress: true
     env:
       CONFIG: "--enable-tests"
     steps:
       - uses: actions/checkout@v3
-      - uses: haskell/actions/setup@v2.3
+      - uses: haskell-actions/setup@v2.5.1
         id: setup-haskell-cabal
         with:
           ghc-version: ${{ matrix.ghc }}
-          cabal-version: ${{ matrix.cabal }}
+          cabal-update: false
       - run: cabal v2-update
       - run: cabal v2-freeze $CONFIG
       - uses: actions/cache@v3
diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index 36e7c38..963e5d7 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -16,9 +16,13 @@ jobs:
       fail-fast: false
       matrix:
         ghc:
-          - ghc902
-          - ghc924
-          - ghc942
+          - ghc90
+          - ghc92
+          - ghc94
+          - ghc96
+    concurrency:
+      group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}-${{ matrix.ghc }}
+      cancel-in-progress: true
     steps:
     - uses: actions/checkout@v3
     - uses: cachix/install-nix-action@v19
diff --git a/flake.lock b/flake.lock
index b40eca7..a810dd6 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,11 +2,11 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1675942811,
-        "narHash": "sha256-/v4Z9mJmADTpXrdIlAjFa1e+gkpIIROR670UVDQFwIw=",
+        "lastModified": 1697059129,
+        "narHash": "sha256-9NJcFF9CEYPvHJ5ckE8kvINvI84SZZ87PvqMbH6pro0=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "724bfc0892363087709bd3a5a1666296759154b1",
+        "rev": "5e4c2ada4fcd54b99d56d7bd62f384511a7e2593",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 607e432..7db8b29 100644
--- a/flake.nix
+++ b/flake.nix
@@ -11,7 +11,7 @@
   }: let
     systems = ["aarch64-darwin" "x86_64-darwin" "x86_64-linux"];
 
-    haskells = ["ghc902" "ghc924" "ghc942"];
+    haskells = ["ghc90" "ghc92" "ghc94" "ghc96"];
 
     eachSystem = nixpkgs.lib.genAttrs systems;
 
@@ -20,16 +20,35 @@
     latestHaskell = nixpkgs.lib.last haskells;
 
     pkgsBySystem = eachSystem (system: nixpkgs.legacyPackages.${system});
+
+    haskellPackages = eachSystem (
+      system: let
+        pkgs = pkgsBySystem.${system};
+        inherit (pkgs.haskell.lib) appendPatch;
+      in
+        eachHaskell (
+          haskell:
+            pkgs.haskell.packages.${haskell}.override (prev: {
+              overrides = _: hprev: {
+                # Wants bytestring <0.12
+                cmark-gfm = appendPatch hprev.cmark-gfm ./nix/cmark-gfm-cabal.patch;
+              };
+            })
+        )
+    );
   in {
     packages = eachSystem (
       system: let
-        pkgs = pkgsBySystem.${system};
-
-        moats = builtins.listToAttrs (map (haskell: {
-            name = "moat-${haskell}";
-            value = pkgs.haskell.packages.${haskell}.callPackage ./moat.nix {};
+        moats =
+          nixpkgs.lib.mapAttrs'
+          (n: v: {
+            name = "moat-${n}";
+            value = v;
           })
-          haskells);
+          (eachHaskell (
+            haskell:
+              haskellPackages.${system}.${haskell}.callPackage ./moat.nix {}
+          ));
       in
         moats // {default = moats."moat-${latestHaskell}";}
     );
@@ -37,40 +56,10 @@
     devShells = eachSystem (
       system: let
         pkgs = pkgsBySystem.${system};
-        inherit
-          (pkgs.haskell.lib)
-          dontCheck
-          overrideCabal
-          ;
-
-        enableSeparateBinOutput = drv:
-          if (pkgs.stdenv.hostPlatform.isDarwin && pkgs.stdenv.hostPlatform.isAarch64)
-          then overrideCabal drv (_: {enableSeparateBinOutput = false;})
-          else drv;
-
-        haskellOverlays = {
-          ghc902 = hself: hsuper: {
-            # Wants cabal == 3.6
-            fourmolu = hsuper.fourmolu.overrideScope (lself: lsuper: {
-              Cabal = lself.Cabal_3_6_3_0;
-            });
-          };
-          ghc924 = hself: hsuper: {
-            # https://github.com/NixOS/nixpkgs/issues/140774
-            ghcid = enableSeparateBinOutput hsuper.ghcid;
-            hls-fourmolu-plugin = dontCheck hsuper.hls-fourmolu-plugin;
-          };
-          ghc942 = hself: hsuper: {
-            # https://github.com/NixOS/nixpkgs/issues/140774
-            ghcid = dontCheck (enableSeparateBinOutput hsuper.ghcid);
-          };
-        };
 
         shells = eachHaskell (
           haskell: let
-            hsPkgs = pkgs.haskell.packages.${haskell}.override (prev: {
-              overrides = haskellOverlays.${haskell};
-            });
+            hsPkgs = haskellPackages.${system}.${haskell};
           in
             pkgs.mkShell {
               name = "moat-${haskell}-shell";
diff --git a/moat.cabal b/moat.cabal
index 6202ed9..dfd9eab 100644
--- a/moat.cabal
+++ b/moat.cabal
@@ -1,6 +1,6 @@
 cabal-version: 1.12
 
--- This file has been generated from package.yaml by hpack version 0.35.1.
+-- This file has been generated from package.yaml by hpack version 0.35.2.
 --
 -- see: https://github.com/sol/hpack
 
@@ -54,7 +54,7 @@ library
     , primitive >=0.6.4 && <0.9
     , template-haskell >=2.11 && <2.21
     , text >=1.2 && <2.1
-    , th-abstraction >=0.3 && <0.6
+    , th-abstraction >=0.3 && <0.7
     , th-compat >=0.1.0 && <0.2
     , time >=1.8 && <1.13
     , unordered-containers ==0.2.*
@@ -130,7 +130,7 @@ test-suite spec
     , primitive >=0.6.4 && <0.9
     , template-haskell >=2.11 && <2.21
     , text >=1.2 && <2.1
-    , th-abstraction >=0.3 && <0.6
+    , th-abstraction >=0.3 && <0.7
     , th-compat >=0.1.0 && <0.2
     , time >=1.8 && <1.13
     , unordered-containers ==0.2.*
diff --git a/nix/cmark-gfm-cabal.patch b/nix/cmark-gfm-cabal.patch
new file mode 100644
index 0000000..ad6e628
--- /dev/null
+++ b/nix/cmark-gfm-cabal.patch
@@ -0,0 +1,13 @@
+diff --git a/cmark-gfm.cabal b/cmark-gfm.cabal
+index 23277d8..4fc84b7 100644
+--- a/cmark-gfm.cabal
++++ b/cmark-gfm.cabal
+@@ -69,7 +69,7 @@ library
+   exposed-modules:     CMarkGFM
+   build-depends:       base >=4.5 && < 5.0,
+                        text >= 1.0 && < 2.1,
+-                       bytestring >= 0.11.5 && < 0.12
++                       bytestring
+   if impl(ghc < 7.6)
+     build-depends:     ghc-prim >= 0.2
+   default-language:    Haskell2010
diff --git a/package.yaml b/package.yaml
index 1f18319..b5ec750 100644
--- a/package.yaml
+++ b/package.yaml
@@ -26,7 +26,7 @@ dependencies:
   - primitive >= 0.6.4 && < 0.9
   - template-haskell >= 2.11 && < 2.21
   - text >= 1.2 && < 2.1
-  - th-abstraction >= 0.3 && < 0.6
+  - th-abstraction >= 0.3 && < 0.7
   - th-compat >= 0.1.0 && < 0.2
   - time >= 1.8 && < 1.13
   - unordered-containers >= 0.2 && < 0.3
diff --git a/src/Moat.hs b/src/Moat.hs
index da5d17c..9864114 100644
--- a/src/Moat.hs
+++ b/src/Moat.hs
@@ -734,12 +734,12 @@ consToMoatType o@Options {..} parentName parentDoc instTys variant ts bs = \case
                 else mkNewtypeInstance o parentDoc instTys con
             Newtype -> do
               if
-                  | newtypeTag -> do
-                      mkTypeTag o parentName instTys con
-                  | typeAlias -> do
-                      mkTypeAlias parentName parentDoc instTys con
-                  | otherwise -> do
-                      mkNewtype o parentName parentDoc instTys con
+                | newtypeTag -> do
+                    mkTypeTag o parentName instTys con
+                | typeAlias -> do
+                    mkTypeAlias parentName parentDoc instTys con
+                | otherwise -> do
+                    mkNewtype o parentName parentDoc instTys con
             _ -> do
               mkProd o parentName parentDoc instTys ts con
         _ -> do