diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d5b96f9..91c8f5b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,18 +6,22 @@ on:
     branches: main
 
 jobs:
+  generate:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - id: generate
+        uses: freckle/stack-action/generate-matrix@v5
+    outputs:
+      stack-yamls: ${{ steps.generate.outputs.stack-yamls }}
+
   test:
     runs-on: ubuntu-latest
+    needs: generate
 
     strategy:
       matrix:
-        stack-yaml:
-          - stack.yaml           # ghc-9.2
-          - stack-lts-19.1.yaml  # ghc-9.0
-          - stack-lts-18.28.yaml # ghc-8.10
-          - stack-lts-16.31.yaml # ghc-8.8
-          - stack-lts-14.27.yaml # ghc-8.6
-          - stack-lts-12.26.yaml # ghc-8.4
+        stack-yaml: ${{ fromJSON(needs.generate.outputs.stack-yamls) }}
       fail-fast: false
 
     steps:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 23313f8..814bd80 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -16,6 +16,6 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - if: steps.tag.outputs.tag
-        uses: freckle/stack-upload-action@v2
+        run: stack upload --pvp-bounds lower .
         env:
-          HACKAGE_API_KEY: ${{ secrets.HACKAGE_UPLOAD_API_KEY }}
+          HACKAGE_KEY: ${{ secrets.HACKAGE_UPLOAD_API_KEY }}
diff --git a/.gitignore b/.gitignore
index 8ee1bf9..deedbf7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,5 @@
+.direnv
+.envrc
 .stack-work
+stack-*.lock
+stack.*.lock
diff --git a/flake.lock b/flake.lock
index 83f0ccc..ba26b36 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1,15 +1,65 @@
 {
   "nodes": {
+    "autodocodec": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1722952210,
+        "narHash": "sha256-+vz0En2dkS0nfOq12QAJtV6GcdP0WoDv7HwzrMIsnGo=",
+        "owner": "NorfairKing",
+        "repo": "autodocodec",
+        "rev": "ac36615cb344ec43259fb65cafe3e55308ce4662",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NorfairKing",
+        "repo": "autodocodec",
+        "type": "github"
+      }
+    },
+    "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1696426674,
+        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
     "flake-utils": {
       "inputs": {
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1689068808,
-        "narHash": "sha256-6ixXo3wt24N/melDWjq70UuHQLxGV8jZvooRanIHXw0=",
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "flake-utils_2": {
+      "inputs": {
+        "systems": "systems_2"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "919d646de7be200f3bf08cb76ae1f09402b6f9b4",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
         "type": "github"
       },
       "original": {
@@ -18,29 +68,442 @@
         "type": "github"
       }
     },
+    "flake-utils_3": {
+      "inputs": {
+        "systems": "systems_3"
+      },
+      "locked": {
+        "lastModified": 1710146030,
+        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "freckle": {
+      "inputs": {
+        "flake-utils": "flake-utils_2",
+        "haskell-openapi-code-generator": "haskell-openapi-code-generator",
+        "nix-github-actions": "nix-github-actions",
+        "nixpkgs-22-11": "nixpkgs-22-11",
+        "nixpkgs-23-05": "nixpkgs-23-05",
+        "nixpkgs-23-11": "nixpkgs-23-11",
+        "nixpkgs-24-05": "nixpkgs-24-05",
+        "nixpkgs-24-11": "nixpkgs-24-11",
+        "nixpkgs-haskell-updates": "nixpkgs-haskell-updates",
+        "nixpkgs-stable": "nixpkgs-stable_2",
+        "stack-lint-extra-deps": "stack-lint-extra-deps"
+      },
+      "locked": {
+        "dir": "main",
+        "lastModified": 1736458820,
+        "narHash": "sha256-IoKZ0XjTtIaF4QsioWGy1xYhWmJW6mu0fYn+xuo2TFw=",
+        "owner": "freckle",
+        "repo": "flakes",
+        "rev": "39aa96931d627c058d41cbc44f9bbd9483877f3d",
+        "type": "github"
+      },
+      "original": {
+        "dir": "main",
+        "owner": "freckle",
+        "repo": "flakes",
+        "type": "github"
+      }
+    },
+    "gitignore": {
+      "inputs": {
+        "nixpkgs": [
+          "freckle",
+          "haskell-openapi-code-generator",
+          "pre-commit-hooks",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1709087332,
+        "narHash": "sha256-HG2cCnktfHsKV0s4XW83gU3F57gaTljL9KNSuG6bnQs=",
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "637db329424fd7e46cf4185293b9cc8c88c95394",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "type": "github"
+      }
+    },
+    "haskell-openapi-code-generator": {
+      "inputs": {
+        "autodocodec": "autodocodec",
+        "flake-utils": "flake-utils_3",
+        "nixpkgs": "nixpkgs",
+        "pre-commit-hooks": "pre-commit-hooks",
+        "safe-coloured-text": "safe-coloured-text",
+        "sydtest": "sydtest",
+        "validity": "validity"
+      },
+      "locked": {
+        "lastModified": 1731515792,
+        "narHash": "sha256-EoU807Pqii6hnLvXIu8G2fDOyKLBrOSesXsEEh3YoZQ=",
+        "owner": "Haskell-OpenAPI-Code-Generator",
+        "repo": "Haskell-OpenAPI-Client-Code-Generator",
+        "rev": "0eb15be1a8ae9c311e727e300e7564bf2eb7096f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "Haskell-OpenAPI-Code-Generator",
+        "repo": "Haskell-OpenAPI-Client-Code-Generator",
+        "type": "github"
+      }
+    },
+    "nix-github-actions": {
+      "inputs": {
+        "nixpkgs": [
+          "freckle",
+          "nixpkgs-stable"
+        ]
+      },
+      "locked": {
+        "lastModified": 1731952509,
+        "narHash": "sha256-p4gB3Rhw8R6Ak4eMl8pqjCPOLCZRqaehZxdZ/mbFClM=",
+        "owner": "nix-community",
+        "repo": "nix-github-actions",
+        "rev": "7b5f051df789b6b20d259924d349a9ba3319b226",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nix-github-actions",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1722987190,
+        "narHash": "sha256-68hmex5efCiM2aZlAAEcQgmFI4ZwWt8a80vOeB/5w3A=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "21cc704b5e918c5fbf4f9fff22b4ac2681706d90",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-24.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-22-11": {
+      "locked": {
+        "lastModified": 1688392541,
+        "narHash": "sha256-lHrKvEkCPTUO+7tPfjIcb7Trk6k31rz18vkyqmkeJfY=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "ea4c80b39be4c09702b0cb3b42eab59e2ba4f24b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-22.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-23-05": {
+      "locked": {
+        "lastModified": 1704290814,
+        "narHash": "sha256-LWvKHp7kGxk/GEtlrGYV68qIvPHkU9iToomNFGagixU=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "70bdadeb94ffc8806c0570eb5c2695ad29f0e421",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-23.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-23-11": {
+      "locked": {
+        "lastModified": 1720535198,
+        "narHash": "sha256-zwVvxrdIzralnSbcpghA92tWu2DV2lwv89xZc8MTrbg=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "205fd4226592cc83fd4c0885a3e4c9c400efabb5",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-23.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-24-05": {
+      "locked": {
+        "lastModified": 1735563628,
+        "narHash": "sha256-OnSAY7XDSx7CtDoqNh8jwVwh4xNL/2HaJxGjryLWzX8=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "b134951a4c9f3c995fd7be05f3243f8ecd65d798",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-24.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-24-11": {
+      "locked": {
+        "lastModified": 1736200483,
+        "narHash": "sha256-JO+lFN2HsCwSLMUWXHeOad6QUxOuwe9UOAF/iSl1J4I=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "3f0a8ac25fb674611b98089ca3a5dd6480175751",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-24.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-haskell-updates": {
+      "locked": {
+        "lastModified": 1735908276,
+        "narHash": "sha256-U19gzGJFlGtyNonhg3jhhamQUex5ri3MgR1QKz6w/qg=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "d3780c92e64472e8f9aa54f7bbb0dd4483b98303",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "haskell-updates",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-haskell-updates_2": {
+      "locked": {
+        "lastModified": 1736295319,
+        "narHash": "sha256-D408QVHL43RPYdPnGhTpBHJs4wVIebbsmh/SAAY0vAE=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "b6b38bb0649cb8393492949e01b1e331c3a05718",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "haskell-updates",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-stable": {
+      "locked": {
+        "lastModified": 1720386169,
+        "narHash": "sha256-NGKVY4PjzwAa4upkGtAMz1npHGoRzWotlSnVlqI40mo=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "194846768975b7ad2c4988bdb82572c00222c0d7",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-24.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-stable_2": {
+      "locked": {
+        "lastModified": 1736200483,
+        "narHash": "sha256-JO+lFN2HsCwSLMUWXHeOad6QUxOuwe9UOAF/iSl1J4I=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "3f0a8ac25fb674611b98089ca3a5dd6480175751",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-24.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1719082008,
+        "narHash": "sha256-jHJSUH619zBQ6WdC21fFAlDxHErKVDJ5fpN0Hgx4sjs=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "9693852a2070b398ee123a329e68f0dab5526681",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_3": {
+      "locked": {
+        "lastModified": 1736200483,
+        "narHash": "sha256-JO+lFN2HsCwSLMUWXHeOad6QUxOuwe9UOAF/iSl1J4I=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "3f0a8ac25fb674611b98089ca3a5dd6480175751",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-24.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "pgp-wordlist": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1714149562,
+        "narHash": "sha256-WCFQgtWqq+gLst4lXkFYlmlW7L8PQOJfChsKMApy3Ng=",
+        "owner": "quchen",
+        "repo": "pgp-wordlist",
+        "rev": "1f0cfd90d62179952cbfd59c3405283a1d364272",
+        "type": "github"
+      },
+      "original": {
+        "owner": "quchen",
+        "repo": "pgp-wordlist",
+        "type": "github"
+      }
+    },
+    "pre-commit-hooks": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "gitignore": "gitignore",
+        "nixpkgs": "nixpkgs_2",
+        "nixpkgs-stable": "nixpkgs-stable"
+      },
+      "locked": {
+        "lastModified": 1723202784,
+        "narHash": "sha256-qbhjc/NEGaDbyy0ucycubq4N3//gDFFH3DOmp1D3u1Q=",
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "rev": "c7012d0c18567c889b948781bc74a501e92275d1",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
         "flake-utils": "flake-utils",
-        "stable": "stable",
-        "unstable": "unstable"
+        "freckle": "freckle",
+        "stable": "stable"
+      }
+    },
+    "safe-coloured-text": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1722709522,
+        "narHash": "sha256-zglWqKISYz34A+/PvqwvwrbQYSEcko8C595VAeINitw=",
+        "owner": "NorfairKing",
+        "repo": "safe-coloured-text",
+        "rev": "046f10147a058c00c2706d98c341219e3cbc7669",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NorfairKing",
+        "repo": "safe-coloured-text",
+        "type": "github"
       }
     },
     "stable": {
       "locked": {
-        "lastModified": 1690271650,
-        "narHash": "sha256-qwdsW8DBY1qH+9luliIH7VzgwvL+ZGI3LZWC0LTiDMI=",
+        "lastModified": 1736200483,
+        "narHash": "sha256-JO+lFN2HsCwSLMUWXHeOad6QUxOuwe9UOAF/iSl1J4I=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "6dc93f0daec55ee2f441da385aaf143863e3d671",
+        "rev": "3f0a8ac25fb674611b98089ca3a5dd6480175751",
         "type": "github"
       },
       "original": {
         "owner": "nixos",
-        "ref": "nixos-23.05",
+        "ref": "nixos-24.11",
         "repo": "nixpkgs",
         "type": "github"
       }
     },
+    "stack-lint-extra-deps": {
+      "inputs": {
+        "nixpkgs": "nixpkgs_3",
+        "nixpkgs-haskell-updates": "nixpkgs-haskell-updates_2",
+        "pgp-wordlist": "pgp-wordlist",
+        "stacklock2nix": "stacklock2nix"
+      },
+      "locked": {
+        "lastModified": 1736375257,
+        "narHash": "sha256-VYW4F4CiPf9uz9gmVRTz+7ezsmbjvedpghqWJFZMsWs=",
+        "owner": "freckle",
+        "repo": "stack-lint-extra-deps",
+        "rev": "fcc40250aafd291eafac4c21510b0337ab5e913b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "freckle",
+        "repo": "stack-lint-extra-deps",
+        "type": "github"
+      }
+    },
+    "stacklock2nix": {
+      "locked": {
+        "lastModified": 1731366632,
+        "narHash": "sha256-dd10Hyqbyhg83pgxE8Sl1jo9wdYzTU4muH83TjhyrCY=",
+        "owner": "cdepillabout",
+        "repo": "stacklock2nix",
+        "rev": "3cb77e9c869be90ad939f368096ff2cc940881d4",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cdepillabout",
+        "repo": "stacklock2nix",
+        "type": "github"
+      }
+    },
+    "sydtest": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1722766036,
+        "narHash": "sha256-i7N8HKkFPUfnOOmj47Di/XnQS66mUzTG6HISUccNhOA=",
+        "owner": "NorfairKing",
+        "repo": "sydtest",
+        "rev": "23baea50a08857baf3121fc55096c40a93ff5f17",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NorfairKing",
+        "repo": "sydtest",
+        "type": "github"
+      }
+    },
     "systems": {
       "locked": {
         "lastModified": 1681028828,
@@ -56,19 +519,49 @@
         "type": "github"
       }
     },
-    "unstable": {
+    "systems_2": {
       "locked": {
-        "lastModified": 1690179384,
-        "narHash": "sha256-+arbgqFTAtoeKtepW9wCnA0njCOyoiDFyl0Q0SBSOtE=",
-        "owner": "nixos",
-        "repo": "nixpkgs",
-        "rev": "b12803b6d90e2e583429bb79b859ca53c348b39a",
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
         "type": "github"
       },
       "original": {
-        "owner": "nixos",
-        "ref": "nixos-unstable",
-        "repo": "nixpkgs",
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "systems_3": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "validity": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1722943924,
+        "narHash": "sha256-hq5FwDFW+02u5Qsx8v1KWoQUsY6S6ufI4WYKZ6yhYUA=",
+        "owner": "NorfairKing",
+        "repo": "validity",
+        "rev": "51b8843b9bd5228160b99f653d3271147245d689",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NorfairKing",
+        "repo": "validity",
         "type": "github"
       }
     }
diff --git a/flake.nix b/flake.nix
index c57c280..bba4246 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,24 +1,50 @@
 {
   inputs = {
-    stable.url = "github:nixos/nixpkgs/nixos-23.05";
-    unstable.url = "github:nixos/nixpkgs/nixos-unstable";
+    stable.url = "github:nixos/nixpkgs/nixos-24.11";
+    freckle.url = "github:freckle/flakes?dir=main";
     flake-utils.url = "github:numtide/flake-utils";
   };
-  outputs = inputs:
-    inputs.flake-utils.lib.eachDefaultSystem (system:
+  outputs =
+    inputs:
+    inputs.flake-utils.lib.eachDefaultSystem (
+      system:
       let
-        nixpkgsArgs = { inherit system; config = { }; };
+        nixpkgsArgs = {
+          inherit system;
+          config = { };
+        };
 
         nixpkgs = {
           stable = import inputs.stable nixpkgsArgs;
-          unstable = import inputs.unstable nixpkgsArgs;
         };
+        freckle = inputs.freckle.packages.${system};
+        freckleLib = inputs.freckle.lib.${system};
 
       in
-      {
-        devShells.default =
-          import ./nix/shell.nix { inherit nixpkgs; };
-        packages =
-          import ./nix { inherit nixpkgs; };
-      });
+      rec {
+        packages = {
+          fourmolu = freckle.fourmolu-0-13-x;
+
+          ghc = freckleLib.haskellBundle {
+            ghcVersion = "ghc-9-8-4";
+            enableHLS = true;
+          };
+        };
+
+        devShells.default = nixpkgs.stable.mkShell {
+          buildInputs = with (nixpkgs.stable); [
+            zlib
+          ];
+
+          nativeBuildInputs = with (packages); [
+            fourmolu
+            ghc
+          ];
+
+          shellHook = ''
+            export STACK_YAML=stack-lts23.yaml
+          '';
+        };
+      }
+    );
 }
diff --git a/nix/cabal.nix b/nix/cabal.nix
deleted file mode 100644
index d809e4f..0000000
--- a/nix/cabal.nix
+++ /dev/null
@@ -1,2 +0,0 @@
-{ nixpkgs }:
-nixpkgs.stable.cabal-install
diff --git a/nix/default.nix b/nix/default.nix
deleted file mode 100644
index 66274f9..0000000
--- a/nix/default.nix
+++ /dev/null
@@ -1,14 +0,0 @@
-{ nixpkgs }:
-{
-  cabal = import ./cabal.nix { inherit nixpkgs; };
-
-  fourmolu = import ./fourmolu.nix { inherit nixpkgs; };
-
-  ghc-with-packages = import ./ghc-with-packages.nix { inherit nixpkgs; };
-
-  haskell-language-server = import ./haskell-language-server.nix { inherit nixpkgs; };
-
-  hlint = import ./hlint.nix { inherit nixpkgs; };
-
-  stack = import ./stack.nix { inherit nixpkgs; };
-}
diff --git a/nix/fourmolu.nix b/nix/fourmolu.nix
deleted file mode 100644
index ca4e3b5..0000000
--- a/nix/fourmolu.nix
+++ /dev/null
@@ -1,15 +0,0 @@
-{ nixpkgs }:
-let
-  inherit (nixpkgs.stable) haskell;
-  inherit (haskell.lib) justStaticExecutables overrideCabal;
-in
-justStaticExecutables
-  (haskell.packages.ghc96.override {
-    inherit (nixpkgs.unstable) all-cabal-hashes;
-    overrides = self: super: {
-      fourmolu =
-        overrideCabal
-          (super.callHackage "fourmolu" "0.13.0.0" { })
-          (drv: { doCheck = false; });
-    };
-  }).fourmolu
diff --git a/nix/ghc-with-packages.nix b/nix/ghc-with-packages.nix
deleted file mode 100644
index 5c47ae0..0000000
--- a/nix/ghc-with-packages.nix
+++ /dev/null
@@ -1,7 +0,0 @@
-{ nixpkgs }:
-let
-  haskellPackages = nixpkgs.stable.haskell.packages.ghc928.override {
-    inherit (nixpkgs.unstable) all-cabal-hashes;
-  };
-in
-haskellPackages.ghcWithPackages (import ./haskell-package-selection.nix)
diff --git a/nix/haskell-language-server.nix b/nix/haskell-language-server.nix
deleted file mode 100644
index 5f9fb69..0000000
--- a/nix/haskell-language-server.nix
+++ /dev/null
@@ -1,3 +0,0 @@
-{ nixpkgs }:
-nixpkgs.stable.haskell-language-server.override
-{ supportedGhcVersions = [ "928" ]; }
diff --git a/nix/haskell-package-selection.nix b/nix/haskell-package-selection.nix
deleted file mode 100644
index f2f6c58..0000000
--- a/nix/haskell-package-selection.nix
+++ /dev/null
@@ -1,5 +0,0 @@
-p: with p; [
-  comonad
-  deepseq
-  safe
-]
diff --git a/nix/hlint.nix b/nix/hlint.nix
deleted file mode 100644
index 0a4a39c..0000000
--- a/nix/hlint.nix
+++ /dev/null
@@ -1,6 +0,0 @@
-{ nixpkgs }:
-let
-  pkgs = nixpkgs.stable;
-in
-  pkgs.haskell.lib.justStaticExecutables
-   nixpkgs.stable.hlint
diff --git a/nix/shell.nix b/nix/shell.nix
deleted file mode 100644
index 188452d..0000000
--- a/nix/shell.nix
+++ /dev/null
@@ -1,13 +0,0 @@
-{ nixpkgs }:
-nixpkgs.stable.mkShell {
-  buildInputs =
-    with (import ./. { inherit nixpkgs; });
-    [
-      cabal
-      fourmolu
-      ghc-with-packages
-      haskell-language-server
-      hlint
-      stack
-    ];
-}
diff --git a/nix/stack.nix b/nix/stack.nix
deleted file mode 100644
index d9116e8..0000000
--- a/nix/stack.nix
+++ /dev/null
@@ -1,2 +0,0 @@
-{ nixpkgs }:
-nixpkgs.stable.stack
diff --git a/stack-lts-12.26.yaml.lock b/stack-lts-12.26.yaml.lock
deleted file mode 100644
index 6bee1e8..0000000
--- a/stack-lts-12.26.yaml.lock
+++ /dev/null
@@ -1,12 +0,0 @@
-# This file was autogenerated by Stack.
-# You should not edit this file by hand.
-# For more information, please see the documentation at:
-#   https://docs.haskellstack.org/en/stable/lock_files
-
-packages: []
-snapshots:
-- completed:
-    size: 509471
-    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/12/26.yaml
-    sha256: 95f014df58d0679b1c4a2b7bf2b652b61da8d30de5f571abb0d59015ef678646
-  original: lts-12.26
diff --git a/stack-lts-14.27.yaml.lock b/stack-lts-14.27.yaml.lock
deleted file mode 100644
index e24dcac..0000000
--- a/stack-lts-14.27.yaml.lock
+++ /dev/null
@@ -1,12 +0,0 @@
-# This file was autogenerated by Stack.
-# You should not edit this file by hand.
-# For more information, please see the documentation at:
-#   https://docs.haskellstack.org/en/stable/lock_files
-
-packages: []
-snapshots:
-- completed:
-    size: 524996
-    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/14/27.yaml
-    sha256: 7ea31a280c56bf36ff591a7397cc384d0dff622e7f9e4225b47d8980f019a0f0
-  original: lts-14.27
diff --git a/stack-lts-16.31.yaml.lock b/stack-lts-16.31.yaml.lock
deleted file mode 100644
index c222190..0000000
--- a/stack-lts-16.31.yaml.lock
+++ /dev/null
@@ -1,12 +0,0 @@
-# This file was autogenerated by Stack.
-# You should not edit this file by hand.
-# For more information, please see the documentation at:
-#   https://docs.haskellstack.org/en/stable/lock_files
-
-packages: []
-snapshots:
-- completed:
-    size: 534126
-    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/16/31.yaml
-    sha256: 637fb77049b25560622a224845b7acfe81a09fdb6a96a3c75997a10b651667f6
-  original: lts-16.31
diff --git a/stack-lts-18.28.yaml.lock b/stack-lts-18.28.yaml.lock
deleted file mode 100644
index 7af0442..0000000
--- a/stack-lts-18.28.yaml.lock
+++ /dev/null
@@ -1,12 +0,0 @@
-# This file was autogenerated by Stack.
-# You should not edit this file by hand.
-# For more information, please see the documentation at:
-#   https://docs.haskellstack.org/en/stable/lock_files
-
-packages: []
-snapshots:
-- completed:
-    size: 590100
-    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/18/28.yaml
-    sha256: 428ec8d5ce932190d3cbe266b9eb3c175cd81e984babf876b64019e2cbe4ea68
-  original: lts-18.28
diff --git a/stack-lts-19.1.lock b/stack-lts-19.1.lock
deleted file mode 100644
index 365f070..0000000
--- a/stack-lts-19.1.lock
+++ /dev/null
@@ -1,12 +0,0 @@
-# This file was autogenerated by Stack.
-# You should not edit this file by hand.
-# For more information, please see the documentation at:
-#   https://docs.haskellstack.org/en/stable/lock_files
-
-packages: []
-snapshots:
-- completed:
-    size: 617355
-    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/19/1.yaml
-    sha256: cbd5e8593869445794924668479b5bd9f1738d075898623dceacc13b2576b6e3
-  original: lts-19.1
diff --git a/stack-lts-12.26.yaml b/stack-lts12.yaml
similarity index 100%
rename from stack-lts-12.26.yaml
rename to stack-lts12.yaml
diff --git a/stack-lts-14.27.yaml b/stack-lts14.yaml
similarity index 100%
rename from stack-lts-14.27.yaml
rename to stack-lts14.yaml
diff --git a/stack-lts-16.31.yaml b/stack-lts16.yaml
similarity index 100%
rename from stack-lts-16.31.yaml
rename to stack-lts16.yaml
diff --git a/stack-lts-18.28.yaml b/stack-lts18.yaml
similarity index 100%
rename from stack-lts-18.28.yaml
rename to stack-lts18.yaml
diff --git a/stack-lts-19.1.yaml b/stack-lts19.yaml
similarity index 100%
rename from stack-lts-19.1.yaml
rename to stack-lts19.yaml
diff --git a/stack-lts20.yaml b/stack-lts20.yaml
new file mode 100644
index 0000000..fc9172f
--- /dev/null
+++ b/stack-lts20.yaml
@@ -0,0 +1 @@
+resolver: lts-20.26
diff --git a/stack-lts21.yaml b/stack-lts21.yaml
new file mode 100644
index 0000000..377040a
--- /dev/null
+++ b/stack-lts21.yaml
@@ -0,0 +1 @@
+resolver: lts-21.25
diff --git a/stack-lts22.yaml b/stack-lts22.yaml
new file mode 100644
index 0000000..c757eef
--- /dev/null
+++ b/stack-lts22.yaml
@@ -0,0 +1 @@
+resolver: lts-22.43
diff --git a/stack-lts23.yaml b/stack-lts23.yaml
new file mode 100644
index 0000000..cf8ed23
--- /dev/null
+++ b/stack-lts23.yaml
@@ -0,0 +1 @@
+resolver: lts-23.3
diff --git a/stack-nightly.yaml b/stack-nightly.yaml
index 9eb59bb..94c12ab 100644
--- a/stack-nightly.yaml
+++ b/stack-nightly.yaml
@@ -1 +1 @@
-resolver: nightly-2022-03-30
+resolver: nightly-2025-01-08
diff --git a/stack-nightly.yaml.lock b/stack-nightly.yaml.lock
deleted file mode 100644
index 0ed608e..0000000
--- a/stack-nightly.yaml.lock
+++ /dev/null
@@ -1,12 +0,0 @@
-# This file was autogenerated by Stack.
-# You should not edit this file by hand.
-# For more information, please see the documentation at:
-#   https://docs.haskellstack.org/en/stable/lock_files
-
-packages: []
-snapshots:
-- completed:
-    size: 539378
-    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/nightly/2022/3/30.yaml
-    sha256: 745431a4c5b78cc93d81e99b2253a1e0eacd4f94e00cf17dab7cc14e665332e3
-  original: nightly-2022-03-30
diff --git a/stack.yaml b/stack.yaml
deleted file mode 100644
index fc9172f..0000000
--- a/stack.yaml
+++ /dev/null
@@ -1 +0,0 @@
-resolver: lts-20.26
diff --git a/stack.yaml b/stack.yaml
new file mode 120000
index 0000000..d7de56b
--- /dev/null
+++ b/stack.yaml
@@ -0,0 +1 @@
+stack-lts23.yaml
\ No newline at end of file
diff --git a/stack.yaml.lock b/stack.yaml.lock
deleted file mode 100644
index ea5a850..0000000
--- a/stack.yaml.lock
+++ /dev/null
@@ -1,12 +0,0 @@
-# This file was autogenerated by Stack.
-# You should not edit this file by hand.
-# For more information, please see the documentation at:
-#   https://docs.haskellstack.org/en/stable/lock_files
-
-packages: []
-snapshots:
-- completed:
-    sha256: 5a59b2a405b3aba3c00188453be172b85893cab8ebc352b1ef58b0eae5d248a2
-    size: 650475
-    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/20/26.yaml
-  original: lts-20.26