diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..4c6160f
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use flake ./dev
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index eb4bc37..be0d189 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -9,12 +9,14 @@ jobs:
   checks:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: cachix/install-nix-action@v18
+      - uses: actions/checkout@v3
+      - name: Install Nix
+        uses: DeterminateSystems/nix-installer-action@main
+      - uses: cachix/cachix-action@v12
         with:
-          extra_nix_config: |
-            experimental-features = nix-command flakes
-            access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
+          name: srid
+      - name: Build 🔨
+        run: nix run github:srid/nixci
       - name: Test example
         id: example
         run: |
@@ -28,8 +30,4 @@ jobs:
           cd $TEMP_DIR
           nix flake init -t $FLAKE
           nix develop --override-input mission-control path:${FLAKE} -c , fmt
-      - name: Flake checks 🧪
-        run: |
-          # Because 'nix flake check' is not system-aware
-          # See https://srid.ca/haskell-template/checks
-          nix run nixpkgs#sd 'systems = nixpkgs.lib.systems.flakeExposed' 'systems = [ "x86_64-linux" ]' flake.nix
+
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..92b2793
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.direnv
diff --git a/dev/flake.lock b/dev/flake.lock
new file mode 100644
index 0000000..04434a7
--- /dev/null
+++ b/dev/flake.lock
@@ -0,0 +1,131 @@
+{
+  "nodes": {
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": "nixpkgs-lib"
+      },
+      "locked": {
+        "lastModified": 1685662779,
+        "narHash": "sha256-cKDDciXGpMEjP1n6HlzKinN0H+oLmNpgeCTzYnsA2po=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "71fb97f0d875fd4de4994dfb849f2c75e17eb6c3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "flake-root": {
+      "locked": {
+        "lastModified": 1680964220,
+        "narHash": "sha256-dIdTYcf+KW9a4pKHsEbddvLVSfR1yiAJynzg2x0nfWg=",
+        "owner": "srid",
+        "repo": "flake-root",
+        "rev": "f1c0b93d05bdbea6c011136ba1a135c80c5b326c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "srid",
+        "repo": "flake-root",
+        "type": "github"
+      }
+    },
+    "mission-control": {
+      "locked": {
+        "lastModified": 1683658484,
+        "narHash": "sha256-JkGnWyYZxOnyOhztrxLSqaod6+O/3rRypq0dAqA/zn0=",
+        "owner": "Platonic-Systems",
+        "repo": "mission-control",
+        "rev": "a0c93bd764a3c25e6999397e9f5f119c1b124e38",
+        "type": "github"
+      },
+      "original": {
+        "owner": "Platonic-Systems",
+        "repo": "mission-control",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1687274257,
+        "narHash": "sha256-TutzPriQcZ8FghDhEolnHcYU2oHIG5XWF+/SUBNnAOE=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "2c9ecd1f0400076a4d6b2193ad468ff0a7e7fdc5",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-lib": {
+      "locked": {
+        "dir": "lib",
+        "lastModified": 1685564631,
+        "narHash": "sha256-8ywr3AkblY4++3lIVxmrWZFzac7+f32ZEhH/A8pNscI=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "4f53efe34b3a8877ac923b9350c874e3dcd5dc0a",
+        "type": "github"
+      },
+      "original": {
+        "dir": "lib",
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1680945546,
+        "narHash": "sha256-8FuaH5t/aVi/pR1XxnF0qi4WwMYC+YxlfdsA0V+TEuQ=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "d9f759f2ea8d265d974a6e1259bd510ac5844c5d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-parts": "flake-parts",
+        "flake-root": "flake-root",
+        "mission-control": "mission-control",
+        "nixpkgs": "nixpkgs",
+        "treefmt-nix": "treefmt-nix"
+      }
+    },
+    "treefmt-nix": {
+      "inputs": {
+        "nixpkgs": "nixpkgs_2"
+      },
+      "locked": {
+        "lastModified": 1689620039,
+        "narHash": "sha256-BtNwghr05z7k5YMdq+6nbue+nEalvDepuA7qdQMAKoQ=",
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "rev": "719c2977f958c41fa60a928e2fbc50af14844114",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/dev/flake.nix b/dev/flake.nix
new file mode 100644
index 0000000..1d6a222
--- /dev/null
+++ b/dev/flake.nix
@@ -0,0 +1,39 @@
+{
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
+    flake-parts.url = "github:hercules-ci/flake-parts";
+    flake-root.url = "github:srid/flake-root";
+    mission-control.url = "github:Platonic-Systems/mission-control";
+    treefmt-nix.url = "github:numtide/treefmt-nix";
+  };
+  outputs = inputs@{ self, nixpkgs, flake-parts, ... }:
+    flake-parts.lib.mkFlake { inherit inputs; } {
+      systems = nixpkgs.lib.systems.flakeExposed;
+      imports = [
+        inputs.flake-root.flakeModule
+        inputs.mission-control.flakeModule
+        inputs.treefmt-nix.flakeModule
+      ];
+      perSystem = { pkgs, lib, config, ... }: {
+        treefmt = {
+          projectRootFile = "flake.nix";
+          programs = {
+            nixpkgs-fmt.enable = true;
+          };
+        };
+        mission-control.scripts = {
+          fmt = {
+            description = "Format all Nix files";
+            exec = config.treefmt.build.wrapper;
+          };
+        };
+        devShells.default = pkgs.mkShell {
+          # cf. https://zero-to-flakes.com/haskell-flake/devshell#composing-devshells
+          inputsFrom = [
+            config.mission-control.devShell
+            config.treefmt.build.devShell
+          ];
+        };
+      };
+    };
+}
diff --git a/flake.nix b/flake.nix
index 46dd071..3f5555e 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,10 +1,22 @@
 {
   description = "A `flake-parts` module for your Nix devshell scripts";
-  outputs = { self, ... }: {
+  outputs = { ... }: {
     flakeModule = ./nix/flake-module.nix;
     templates.default = {
       description = "Example flake using mission-control to provide scripts";
       path = builtins.path { path = ./example; filter = path: type: baseNameOf path == "flake.nix"; };
     };
+
+    # Config for https://github.com/srid/nixci
+    # To run this, `nix run github:srid/nixci`
+    nixci = let overrideInputs = { "mission-control" = ./.; }; in {
+      example = {
+        inherit overrideInputs;
+        dir = "./example";
+      };
+      dev = {
+        dir = "./dev";
+      };
+    };
   };
 }