diff --git a/.envrc b/.envrc
index 3550a30f..dc25ec71 100644
--- a/.envrc
+++ b/.envrc
@@ -1 +1,10 @@
-use flake
+if ! has nix_direnv_version || ! nix_direnv_version 2.2.1; then
+  source_url "https://raw.githubusercontent.com/nix-community/nix-direnv/2.2.1/direnvrc" "sha256-zelF0vLbEl5uaqrfIzbgNzJWGmLzCmYAkInj/LNxvKs="
+fi
+
+watch_file flake.nix
+watch_file flake.lock
+if ! use flake . --no-pure-eval
+then
+  echo "devenv could not be built. The devenv environment was not loaded. Make the necessary changes to devenv.nix and hit enter to try again." >&2
+fi
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b7db85f0..b098630c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -18,24 +18,42 @@ jobs:
     strategy:
       matrix:
         os:
-          - macos-13      # x86_64-darwin
-          - macos-latest  # aarch64-darwin
-          - ubuntu-latest # x86_64-linux
+          # - macos-13      # x86_64-darwin
+          # - macos-latest  # aarch64-darwin
+          - ubuntu-24.04 # x86_64-linux
       fail-fast: true
     runs-on: ${{ matrix.os }}
     timeout-minutes: 30
     steps:
-      - uses: actions/checkout@v4
-      - uses: DeterminateSystems/nix-installer-action@v12
+      - name: Checkout code
+        uses: actions/checkout@v4
+      - name: Install Nix
+        uses: DeterminateSystems/nix-installer-action@v16
         with:
           extra-conf: accept-flake-config = true
-      - uses: DeterminateSystems/magic-nix-cache-action@v7
+      - name: Setup devenv binary cache
+        uses: cachix/cachix-action@v15
+        with:
+          name: devenv
+      - name: Install devenv
+        run:  nix-env -if https://github.com/cachix/devenv/archive/refs/tags/v1.3.1.tar.gz
+      - name: Cache ~/.cabal/packages, ~/.cabal/store and dist-newstyle
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cabal/packages
+            ~/.cabal/store
+            dist-newstyle
+          key: ${{ runner.os }}-${{ matrix.ghc }}-${{ hashFiles('**/*.cabal') }}
+          restore-keys: ${{ runner.os }}-${{ matrix.ghc }}-
+      - name: Update Cabal list of known packages.
+        run: nix develop --no-pure-eval -c cabal update
       - name: Compile code ${{ matrix.ghc }}
-        run: nix build .#test
+        run: nix develop --no-pure-eval -c cabal build
       - name: Run tests ${{ matrix.ghc }}
-        run: nix run .#test
+        run: nix develop --no-pure-eval -c cabal test
 
-  docker:
-    uses: ./.github/workflows/reusable-docker.yml
-    with:
-      push: false
+  # docker:
+  #   uses: ./.github/workflows/reusable-docker.yml
+  #   with:
+  #     push: false
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 00000000..8d4e5d42
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,10 @@
+repos:
+    -   repo: local
+        hooks:
+        -   id: hlint
+            name: hlint
+            description: HLint gives suggestions on how to improve your source code.
+            entry: hlint
+            language: system
+            files: '\.l?hs$'
+
diff --git a/flake.lock b/flake.lock
index 7f51fc82..cf906db5 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1,689 +1,247 @@
 {
   "nodes": {
-    "HTTP": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1451647621,
-        "narHash": "sha256-oHIyw3x0iKBexEo49YeUDV1k74ZtyYKGR2gNJXXRxts=",
-        "owner": "phadej",
-        "repo": "HTTP",
-        "rev": "9bc0996d412fef1787449d841277ef663ad9a915",
-        "type": "github"
-      },
-      "original": {
-        "owner": "phadej",
-        "repo": "HTTP",
-        "type": "github"
-      }
-    },
-    "cabal-32": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1603716527,
-        "narHash": "sha256-X0TFfdD4KZpwl0Zr6x+PLxUt/VyKQfX7ylXHdmZIL+w=",
-        "owner": "haskell",
-        "repo": "cabal",
-        "rev": "48bf10787e27364730dd37a42b603cee8d6af7ee",
-        "type": "github"
+    "cachix": {
+      "inputs": {
+        "devenv": [
+          "devenv"
+        ],
+        "flake-compat": [
+          "devenv"
+        ],
+        "git-hooks": [
+          "devenv"
+        ],
+        "nixpkgs": "nixpkgs"
       },
-      "original": {
-        "owner": "haskell",
-        "ref": "3.2",
-        "repo": "cabal",
-        "type": "github"
-      }
-    },
-    "cabal-34": {
-      "flake": false,
       "locked": {
-        "lastModified": 1645834128,
-        "narHash": "sha256-wG3d+dOt14z8+ydz4SL7pwGfe7SiimxcD/LOuPCV6xM=",
-        "owner": "haskell",
-        "repo": "cabal",
-        "rev": "5ff598c67f53f7c4f48e31d722ba37172230c462",
+        "lastModified": 1728672398,
+        "narHash": "sha256-KxuGSoVUFnQLB2ZcYODW7AVPAh9JqRlD5BrfsC/Q4qs=",
+        "owner": "cachix",
+        "repo": "cachix",
+        "rev": "aac51f698309fd0f381149214b7eee213c66ef0a",
         "type": "github"
       },
       "original": {
-        "owner": "haskell",
-        "ref": "3.4",
-        "repo": "cabal",
+        "owner": "cachix",
+        "ref": "latest",
+        "repo": "cachix",
         "type": "github"
       }
     },
-    "cabal-36": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1669081697,
-        "narHash": "sha256-I5or+V7LZvMxfbYgZATU4awzkicBwwok4mVoje+sGmU=",
-        "owner": "haskell",
-        "repo": "cabal",
-        "rev": "8fd619e33d34924a94e691c5fea2c42f0fc7f144",
-        "type": "github"
+    "devenv": {
+      "inputs": {
+        "cachix": "cachix",
+        "flake-compat": "flake-compat",
+        "git-hooks": "git-hooks",
+        "nix": "nix",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
       },
-      "original": {
-        "owner": "haskell",
-        "ref": "3.6",
-        "repo": "cabal",
-        "type": "github"
-      }
-    },
-    "cardano-shell": {
-      "flake": false,
       "locked": {
-        "lastModified": 1608537748,
-        "narHash": "sha256-PulY1GfiMgKVnBci3ex4ptk2UNYMXqGjJOxcPy2KYT4=",
-        "owner": "input-output-hk",
-        "repo": "cardano-shell",
-        "rev": "9392c75087cb9a3d453998f4230930dea3a95725",
+        "lastModified": 1736273305,
+        "narHash": "sha256-lZDdyP3Y9VBCYMTiA7rOXUuXnngLwqoZDHjTrRHeb8g=",
+        "owner": "cachix",
+        "repo": "devenv",
+        "rev": "cc48e044747cef4e4f69897e20a100adf5b716a3",
         "type": "github"
       },
       "original": {
-        "owner": "input-output-hk",
-        "repo": "cardano-shell",
+        "owner": "cachix",
+        "repo": "devenv",
         "type": "github"
       }
     },
     "flake-compat": {
       "flake": false,
       "locked": {
-        "lastModified": 1672831974,
-        "narHash": "sha256-z9k3MfslLjWQfnjBtEtJZdq3H7kyi2kQtUThfTgdRk0=",
-        "owner": "input-output-hk",
+        "lastModified": 1696426674,
+        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
+        "owner": "edolstra",
         "repo": "flake-compat",
-        "rev": "45f2638735f8cdc40fe302742b79f248d23eb368",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
         "type": "github"
       },
       "original": {
-        "owner": "input-output-hk",
-        "ref": "hkm/gitlab-fix",
+        "owner": "edolstra",
         "repo": "flake-compat",
         "type": "github"
       }
     },
-    "flake-utils": {
+    "flake-parts": {
       "inputs": {
-        "systems": "systems"
-      },
-      "locked": {
-        "lastModified": 1726560853,
-        "narHash": "sha256-X6rJYSESBVr3hBoH0WbKE5KvhPU5bloyZ2L4K60/fPQ=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "c1dfcf08411b08f6b8615f7d8971a2bfa81d5e8a",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
-    "ghc-8.6.5-iohk": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1600920045,
-        "narHash": "sha256-DO6kxJz248djebZLpSzTGD6s8WRpNI9BTwUeOf5RwY8=",
-        "owner": "input-output-hk",
-        "repo": "ghc",
-        "rev": "95713a6ecce4551240da7c96b6176f980af75cae",
-        "type": "github"
+        "nixpkgs-lib": [
+          "devenv",
+          "nix",
+          "nixpkgs"
+        ]
       },
-      "original": {
-        "owner": "input-output-hk",
-        "ref": "release/8.6.5-iohk",
-        "repo": "ghc",
-        "type": "github"
-      }
-    },
-    "hackage": {
-      "flake": false,
       "locked": {
-        "lastModified": 1727656118,
-        "narHash": "sha256-RwerqkdfQIP2IsVbRmuYbb+eogm6S9Bk1CO49shkGVs=",
-        "owner": "input-output-hk",
-        "repo": "hackage.nix",
-        "rev": "b9ffc606875b2ccf24a08a1dc84419a6a9eb5d9b",
+        "lastModified": 1712014858,
+        "narHash": "sha256-sB4SWl2lX95bExY2gMFG5HIzvva5AVMJd4Igm+GpZNw=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "9126214d0a59633752a136528f5f3b9aa8565b7d",
         "type": "github"
       },
       "original": {
-        "owner": "input-output-hk",
-        "repo": "hackage.nix",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
         "type": "github"
       }
     },
-    "haskellNix": {
+    "git-hooks": {
       "inputs": {
-        "HTTP": "HTTP",
-        "cabal-32": "cabal-32",
-        "cabal-34": "cabal-34",
-        "cabal-36": "cabal-36",
-        "cardano-shell": "cardano-shell",
-        "flake-compat": "flake-compat",
-        "ghc-8.6.5-iohk": "ghc-8.6.5-iohk",
-        "hackage": "hackage",
-        "hls-1.10": "hls-1.10",
-        "hls-2.0": "hls-2.0",
-        "hls-2.2": "hls-2.2",
-        "hls-2.3": "hls-2.3",
-        "hls-2.4": "hls-2.4",
-        "hls-2.5": "hls-2.5",
-        "hls-2.6": "hls-2.6",
-        "hls-2.7": "hls-2.7",
-        "hls-2.8": "hls-2.8",
-        "hls-2.9": "hls-2.9",
-        "hpc-coveralls": "hpc-coveralls",
-        "hydra": "hydra",
-        "iserv-proxy": "iserv-proxy",
+        "flake-compat": [
+          "devenv"
+        ],
+        "gitignore": "gitignore",
         "nixpkgs": [
-          "haskellNix",
-          "nixpkgs-unstable"
+          "devenv",
+          "nixpkgs"
         ],
-        "nixpkgs-2003": "nixpkgs-2003",
-        "nixpkgs-2105": "nixpkgs-2105",
-        "nixpkgs-2111": "nixpkgs-2111",
-        "nixpkgs-2205": "nixpkgs-2205",
-        "nixpkgs-2211": "nixpkgs-2211",
-        "nixpkgs-2305": "nixpkgs-2305",
-        "nixpkgs-2311": "nixpkgs-2311",
-        "nixpkgs-2405": "nixpkgs-2405",
-        "nixpkgs-unstable": "nixpkgs-unstable",
-        "old-ghc-nix": "old-ghc-nix",
-        "stackage": "stackage"
-      },
-      "locked": {
-        "lastModified": 1727657466,
-        "narHash": "sha256-aOHI5E0PcihXlwQQgcSiLsIrk4sYg4SI+zxpFO34lC8=",
-        "owner": "input-output-hk",
-        "repo": "haskell.nix",
-        "rev": "a4fc7302dec23f5ae2064b90b19090067be1550e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "input-output-hk",
-        "repo": "haskell.nix",
-        "type": "github"
-      }
-    },
-    "hls-1.10": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1680000865,
-        "narHash": "sha256-rc7iiUAcrHxwRM/s0ErEsSPxOR3u8t7DvFeWlMycWgo=",
-        "owner": "haskell",
-        "repo": "haskell-language-server",
-        "rev": "b08691db779f7a35ff322b71e72a12f6e3376fd9",
-        "type": "github"
-      },
-      "original": {
-        "owner": "haskell",
-        "ref": "1.10.0.0",
-        "repo": "haskell-language-server",
-        "type": "github"
-      }
-    },
-    "hls-2.0": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1687698105,
-        "narHash": "sha256-OHXlgRzs/kuJH8q7Sxh507H+0Rb8b7VOiPAjcY9sM1k=",
-        "owner": "haskell",
-        "repo": "haskell-language-server",
-        "rev": "783905f211ac63edf982dd1889c671653327e441",
-        "type": "github"
-      },
-      "original": {
-        "owner": "haskell",
-        "ref": "2.0.0.1",
-        "repo": "haskell-language-server",
-        "type": "github"
-      }
-    },
-    "hls-2.2": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1693064058,
-        "narHash": "sha256-8DGIyz5GjuCFmohY6Fa79hHA/p1iIqubfJUTGQElbNk=",
-        "owner": "haskell",
-        "repo": "haskell-language-server",
-        "rev": "b30f4b6cf5822f3112c35d14a0cba51f3fe23b85",
-        "type": "github"
-      },
-      "original": {
-        "owner": "haskell",
-        "ref": "2.2.0.0",
-        "repo": "haskell-language-server",
-        "type": "github"
-      }
-    },
-    "hls-2.3": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1695910642,
-        "narHash": "sha256-tR58doOs3DncFehHwCLczJgntyG/zlsSd7DgDgMPOkI=",
-        "owner": "haskell",
-        "repo": "haskell-language-server",
-        "rev": "458ccdb55c9ea22cd5d13ec3051aaefb295321be",
-        "type": "github"
-      },
-      "original": {
-        "owner": "haskell",
-        "ref": "2.3.0.0",
-        "repo": "haskell-language-server",
-        "type": "github"
-      }
-    },
-    "hls-2.4": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1699862708,
-        "narHash": "sha256-YHXSkdz53zd0fYGIYOgLt6HrA0eaRJi9mXVqDgmvrjk=",
-        "owner": "haskell",
-        "repo": "haskell-language-server",
-        "rev": "54507ef7e85fa8e9d0eb9a669832a3287ffccd57",
-        "type": "github"
-      },
-      "original": {
-        "owner": "haskell",
-        "ref": "2.4.0.1",
-        "repo": "haskell-language-server",
-        "type": "github"
-      }
-    },
-    "hls-2.5": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1701080174,
-        "narHash": "sha256-fyiR9TaHGJIIR0UmcCb73Xv9TJq3ht2ioxQ2mT7kVdc=",
-        "owner": "haskell",
-        "repo": "haskell-language-server",
-        "rev": "27f8c3d3892e38edaef5bea3870161815c4d014c",
-        "type": "github"
-      },
-      "original": {
-        "owner": "haskell",
-        "ref": "2.5.0.0",
-        "repo": "haskell-language-server",
-        "type": "github"
-      }
-    },
-    "hls-2.6": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1705325287,
-        "narHash": "sha256-+P87oLdlPyMw8Mgoul7HMWdEvWP/fNlo8jyNtwME8E8=",
-        "owner": "haskell",
-        "repo": "haskell-language-server",
-        "rev": "6e0b342fa0327e628610f2711f8c3e4eaaa08b1e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "haskell",
-        "ref": "2.6.0.0",
-        "repo": "haskell-language-server",
-        "type": "github"
-      }
-    },
-    "hls-2.7": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1708965829,
-        "narHash": "sha256-LfJ+TBcBFq/XKoiNI7pc4VoHg4WmuzsFxYJ3Fu+Jf+M=",
-        "owner": "haskell",
-        "repo": "haskell-language-server",
-        "rev": "50322b0a4aefb27adc5ec42f5055aaa8f8e38001",
-        "type": "github"
-      },
-      "original": {
-        "owner": "haskell",
-        "ref": "2.7.0.0",
-        "repo": "haskell-language-server",
-        "type": "github"
-      }
-    },
-    "hls-2.8": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1715153580,
-        "narHash": "sha256-Vi/iUt2pWyUJlo9VrYgTcbRviWE0cFO6rmGi9rmALw0=",
-        "owner": "haskell",
-        "repo": "haskell-language-server",
-        "rev": "dd1be1beb16700de59e0d6801957290bcf956a0a",
-        "type": "github"
-      },
-      "original": {
-        "owner": "haskell",
-        "ref": "2.8.0.0",
-        "repo": "haskell-language-server",
-        "type": "github"
-      }
-    },
-    "hls-2.9": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1720003792,
-        "narHash": "sha256-qnDx8Pk0UxtoPr7BimEsAZh9g2WuTuMB/kGqnmdryKs=",
-        "owner": "haskell",
-        "repo": "haskell-language-server",
-        "rev": "0c1817cb2babef0765e4e72dd297c013e8e3d12b",
-        "type": "github"
+        "nixpkgs-stable": [
+          "devenv"
+        ]
       },
-      "original": {
-        "owner": "haskell",
-        "ref": "2.9.0.1",
-        "repo": "haskell-language-server",
-        "type": "github"
-      }
-    },
-    "hpc-coveralls": {
-      "flake": false,
       "locked": {
-        "lastModified": 1607498076,
-        "narHash": "sha256-8uqsEtivphgZWYeUo5RDUhp6bO9j2vaaProQxHBltQk=",
-        "owner": "sevanspowell",
-        "repo": "hpc-coveralls",
-        "rev": "14df0f7d229f4cd2e79f8eabb1a740097fdfa430",
+        "lastModified": 1730302582,
+        "narHash": "sha256-W1MIJpADXQCgosJZT8qBYLRuZls2KSiKdpnTVdKBuvU=",
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "rev": "af8a16fe5c264f5e9e18bcee2859b40a656876cf",
         "type": "github"
       },
       "original": {
-        "owner": "sevanspowell",
-        "repo": "hpc-coveralls",
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
         "type": "github"
       }
     },
-    "hydra": {
+    "gitignore": {
       "inputs": {
-        "nix": "nix",
         "nixpkgs": [
-          "haskellNix",
-          "hydra",
-          "nix",
+          "devenv",
+          "git-hooks",
           "nixpkgs"
         ]
       },
       "locked": {
-        "lastModified": 1671755331,
-        "narHash": "sha256-hXsgJj0Cy0ZiCiYdW2OdBz5WmFyOMKuw4zyxKpgUKm4=",
-        "owner": "NixOS",
-        "repo": "hydra",
-        "rev": "f48f00ee6d5727ae3e488cbf9ce157460853fea8",
-        "type": "github"
-      },
-      "original": {
-        "id": "hydra",
-        "type": "indirect"
-      }
-    },
-    "iserv-proxy": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1717479972,
-        "narHash": "sha256-7vE3RQycHI1YT9LHJ1/fUaeln2vIpYm6Mmn8FTpYeVo=",
-        "owner": "stable-haskell",
-        "repo": "iserv-proxy",
-        "rev": "2ed34002247213fc435d0062350b91bab920626e",
+        "lastModified": 1709087332,
+        "narHash": "sha256-HG2cCnktfHsKV0s4XW83gU3F57gaTljL9KNSuG6bnQs=",
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "637db329424fd7e46cf4185293b9cc8c88c95394",
         "type": "github"
       },
       "original": {
-        "owner": "stable-haskell",
-        "ref": "iserv-syms",
-        "repo": "iserv-proxy",
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
         "type": "github"
       }
     },
-    "lowdown-src": {
+    "libgit2": {
       "flake": false,
       "locked": {
-        "lastModified": 1633514407,
-        "narHash": "sha256-Dw32tiMjdK9t3ETl5fzGrutQTzh2rufgZV4A/BbxuD4=",
-        "owner": "kristapsdz",
-        "repo": "lowdown",
-        "rev": "d2c2b44ff6c27b936ec27358a2653caaef8f73b8",
+        "lastModified": 1697646580,
+        "narHash": "sha256-oX4Z3S9WtJlwvj0uH9HlYcWv+x1hqp8mhXl7HsLu2f0=",
+        "owner": "libgit2",
+        "repo": "libgit2",
+        "rev": "45fd9ed7ae1a9b74b957ef4f337bc3c8b3df01b5",
         "type": "github"
       },
       "original": {
-        "owner": "kristapsdz",
-        "repo": "lowdown",
+        "owner": "libgit2",
+        "repo": "libgit2",
         "type": "github"
       }
     },
     "nix": {
       "inputs": {
-        "lowdown-src": "lowdown-src",
-        "nixpkgs": "nixpkgs",
-        "nixpkgs-regression": "nixpkgs-regression"
+        "flake-compat": [
+          "devenv"
+        ],
+        "flake-parts": "flake-parts",
+        "libgit2": "libgit2",
+        "nixpkgs": "nixpkgs_2",
+        "nixpkgs-23-11": [
+          "devenv"
+        ],
+        "nixpkgs-regression": [
+          "devenv"
+        ],
+        "pre-commit-hooks": [
+          "devenv"
+        ]
       },
       "locked": {
-        "lastModified": 1661606874,
-        "narHash": "sha256-9+rpYzI+SmxJn+EbYxjGv68Ucp22bdFUSy/4LkHkkDQ=",
-        "owner": "NixOS",
+        "lastModified": 1727438425,
+        "narHash": "sha256-X8ES7I1cfNhR9oKp06F6ir4Np70WGZU5sfCOuNBEwMg=",
+        "owner": "domenkozar",
         "repo": "nix",
-        "rev": "11e45768b34fdafdcf019ddbd337afa16127ff0f",
+        "rev": "f6c5ae4c1b2e411e6b1e6a8181cc84363d6a7546",
         "type": "github"
       },
       "original": {
-        "owner": "NixOS",
-        "ref": "2.11.0",
+        "owner": "domenkozar",
+        "ref": "devenv-2.24",
         "repo": "nix",
         "type": "github"
       }
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1657693803,
-        "narHash": "sha256-G++2CJ9u0E7NNTAi9n5G8TdDmGJXcIjkJ3NF8cetQB8=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "365e1b3a859281cf11b94f87231adeabbdd878a2",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixos-22.05-small",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs-2003": {
-      "locked": {
-        "lastModified": 1620055814,
-        "narHash": "sha256-8LEHoYSJiL901bTMVatq+rf8y7QtWuZhwwpKE2fyaRY=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "1db42b7fe3878f3f5f7a4f2dc210772fd080e205",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-20.03-darwin",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs-2105": {
-      "locked": {
-        "lastModified": 1659914493,
-        "narHash": "sha256-lkA5X3VNMKirvA+SUzvEhfA7XquWLci+CGi505YFAIs=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "022caabb5f2265ad4006c1fa5b1ebe69fb0c3faf",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-21.05-darwin",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs-2111": {
-      "locked": {
-        "lastModified": 1659446231,
-        "narHash": "sha256-hekabNdTdgR/iLsgce5TGWmfIDZ86qjPhxDg/8TlzhE=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "eabc38219184cc3e04a974fe31857d8e0eac098d",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-21.11-darwin",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs-2205": {
-      "locked": {
-        "lastModified": 1685573264,
-        "narHash": "sha256-Zffu01pONhs/pqH07cjlF10NnMDLok8ix5Uk4rhOnZQ=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "380be19fbd2d9079f677978361792cb25e8a3635",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-22.05-darwin",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs-2211": {
-      "locked": {
-        "lastModified": 1688392541,
-        "narHash": "sha256-lHrKvEkCPTUO+7tPfjIcb7Trk6k31rz18vkyqmkeJfY=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "ea4c80b39be4c09702b0cb3b42eab59e2ba4f24b",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-22.11-darwin",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs-2305": {
-      "locked": {
-        "lastModified": 1705033721,
-        "narHash": "sha256-K5eJHmL1/kev6WuqyqqbS1cdNnSidIZ3jeqJ7GbrYnQ=",
+        "lastModified": 1730531603,
+        "narHash": "sha256-Dqg6si5CqIzm87sp57j5nTaeBbWhHFaVyG7V6L8k3lY=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "a1982c92d8980a0114372973cbdfe0a307f1bdea",
+        "rev": "7ffd9ae656aec493492b44d0ddfb28e79a1ea25d",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixpkgs-23.05-darwin",
+        "ref": "nixos-unstable",
         "repo": "nixpkgs",
         "type": "github"
       }
     },
-    "nixpkgs-2311": {
+    "nixpkgs_2": {
       "locked": {
-        "lastModified": 1719957072,
-        "narHash": "sha256-gvFhEf5nszouwLAkT9nWsDzocUTqLWHuL++dvNjMp9I=",
+        "lastModified": 1717432640,
+        "narHash": "sha256-+f9c4/ZX5MWDOuB1rKoWj+lBNm0z0rs4CK47HBLxy1o=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "7144d6241f02d171d25fba3edeaf15e0f2592105",
+        "rev": "88269ab3044128b7c2f4c7d68448b2fb50456870",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixpkgs-23.11-darwin",
+        "ref": "release-24.05",
         "repo": "nixpkgs",
         "type": "github"
       }
     },
-    "nixpkgs-2405": {
+    "nixpkgs_3": {
       "locked": {
-        "lastModified": 1720122915,
-        "narHash": "sha256-Nby8WWxj0elBu1xuRaUcRjPi/rU3xVbkAt2kj4QwX2U=",
+        "lastModified": 1736200483,
+        "narHash": "sha256-JO+lFN2HsCwSLMUWXHeOad6QUxOuwe9UOAF/iSl1J4I=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "835cf2d3f37989c5db6585a28de967a667a75fb1",
+        "rev": "3f0a8ac25fb674611b98089ca3a5dd6480175751",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixpkgs-24.05-darwin",
+        "ref": "nixos-24.11",
         "repo": "nixpkgs",
         "type": "github"
       }
     },
-    "nixpkgs-regression": {
-      "locked": {
-        "lastModified": 1643052045,
-        "narHash": "sha256-uGJ0VXIhWKGXxkeNnq4TvV3CIOkUJ3PAoLZ3HMzNVMw=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "215d4d0fd80ca5163643b03a33fde804a29cc1e2",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "215d4d0fd80ca5163643b03a33fde804a29cc1e2",
-        "type": "github"
-      }
-    },
-    "nixpkgs-unstable": {
-      "locked": {
-        "lastModified": 1720181791,
-        "narHash": "sha256-i4vJL12/AdyuQuviMMd1Hk2tsGt02hDNhA0Zj1m16N8=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "4284c2b73c8bce4b46a6adf23e16d9e2ec8da4bb",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "old-ghc-nix": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1631092763,
-        "narHash": "sha256-sIKgO+z7tj4lw3u6oBZxqIhDrzSkvpHtv0Kki+lh9Fg=",
-        "owner": "angerman",
-        "repo": "old-ghc-nix",
-        "rev": "af48a7a7353e418119b6dfe3cd1463a657f342b8",
-        "type": "github"
-      },
-      "original": {
-        "owner": "angerman",
-        "ref": "master",
-        "repo": "old-ghc-nix",
-        "type": "github"
-      }
-    },
     "root": {
       "inputs": {
-        "flake-utils": "flake-utils",
-        "haskellNix": "haskellNix",
-        "nixpkgs": [
-          "haskellNix",
-          "nixpkgs-unstable"
-        ]
-      }
-    },
-    "stackage": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1727655087,
-        "narHash": "sha256-t+mvlQp15og02vGhehBR5Amv3r+eTMJ7IE3BdpqmPVo=",
-        "owner": "input-output-hk",
-        "repo": "stackage.nix",
-        "rev": "08a17b45866f3de7bbd083677ea28b56c74cd1f3",
-        "type": "github"
-      },
-      "original": {
-        "owner": "input-output-hk",
-        "repo": "stackage.nix",
-        "type": "github"
+        "devenv": "devenv",
+        "nixpkgs": "nixpkgs_3",
+        "systems": "systems"
       }
     },
     "systems": {
diff --git a/flake.nix b/flake.nix
index a7f3c640..6b5bfce7 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,68 +1,62 @@
 {
   inputs = {
-    flake-utils.url = "github:numtide/flake-utils";
-    haskellNix.url = "github:input-output-hk/haskell.nix";
-    nixpkgs.follows = "haskellNix/nixpkgs-unstable";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.11";
+    systems.url = "github:nix-systems/default";
+    devenv.url = "github:cachix/devenv";
+    devenv.inputs.nixpkgs.follows = "nixpkgs";
   };
 
   nixConfig = {
-    allow-import-from-derivation = "true";
-    extra-substituters = [
-      "https://cache.iog.io"
-      "https://cache.zw3rk.com"
-    ];
-    extra-trusted-public-keys = [
-      "hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ="
-      "loony-tools:pr9m4BkM/5/eSTZlkQyRt57Jz7OMBxNSUiMC4FkcNfk="
-    ];
+    extra-trusted-public-keys = "devenv.cachix.org-1:w1cLUi8dv3hnoSPGAuibQv+f9TZLr6cv/Hm9XgU50cw=";
+    extra-substituters = "https://devenv.cachix.org";
   };
 
-  outputs = inputs@{ self, flake-utils, haskellNix, nixpkgs }:
-    # https://input-output-hk.github.io/haskell.nix/tutorials/getting-started-flakes.html
-    flake-utils.lib.eachDefaultSystem (system:
-      let
-        overlays = [
-          haskellNix.overlay
-          (final: prev: {
-            hapistrano = final.haskell-nix.cabalProject' {
-              src = final.haskell-nix.haskellLib.cleanGit {
-                name = "hapistrano";
-                src = ./.;
-              };
-              # This is used by `nix develop .` to open a shell for use with
-              # `cabal`, `hlint` and `haskell-language-server`
-              shell.tools = {
-                cabal = {};
-                hlint = {};
-                haskell-language-server = {};
-              };
-              compiler-nix-name = "ghc966";
-            };
-          })
-        ];       
-        pkgs = import nixpkgs { inherit system overlays; inherit (haskellNix) config; };
-        flake = pkgs.hapistrano.flake { };
-      in rec {
-        apps = {
-          test = {
-            type = "app";
-            program = "${packages.test}/bin/test";
-          };
-        };
-        packages = {
-          default = flake.packages."hapistrano:exe:hap";
-          test = flake.packages."hapistrano:test:test".overrideAttrs (_: {
-            postFixup = ''
-              wrapProgram $out/bin/test \
-                --set PATH ${pkgs.lib.makeBinPath [
-                  pkgs.bash
-                  pkgs.coreutils
-                  pkgs.findutils
-                  pkgs.git
-                  pkgs.zsh
-                ]}
-            '';
-          });
+  outputs = {
+    self,
+    nixpkgs,
+    devenv,
+    systems,
+    ...
+  } @ inputs: let
+    forEachSystem = nixpkgs.lib.genAttrs (import systems);
+  in {
+    packages = forEachSystem (system: {
+      devenv-up = self.devShells.${system}.default.config.procfileScript;
+      devenv-test = self.devShells.${system}.default.config.test;
+    });
+
+    devShells =
+      forEachSystem
+      (system: let
+        pkgs = nixpkgs.legacyPackages.${system};
+      in {
+        default = devenv.lib.mkShell {
+          inherit inputs pkgs;
+          modules = [
+            {
+              env.LC_ALL = "en_US.UTF-8";
+              env.GHC_CHARENC = "GHC_NO_UNICODE";
+
+              languages.haskell.enable = true;
+              languages.haskell.package = pkgs.haskell.compiler.ghc96;
+
+              # https://devenv.sh/reference/options/
+              packages = with pkgs; [
+                pre-commit
+                zsh
+              ];
+
+              enterShell = ''
+                pre-commit install
+              '';
+
+              enterTest = ''
+                cabal update
+                cabal test
+              '';
+            }
+          ];
         };
       });
+  };
 }