Bootstrap nix flake environment

flake.lock

@@ -0,0 +1,69 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1653893745,
+        "narHash": "sha256-0jntwV3Z8//YwuOjzhV2sgJJPt+HY6KhU7VZUL0fKZQ=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "1ed9fb1935d260de5fe1c2f7ee0ebaae17ed2fa1",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "ref": "master",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1654007547,
+        "narHash": "sha256-G812EeXZeGeGjkAvbTleGwcKFCGxdLOQb9aViOWASPc=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "5643714dea562f0161529ab23058562afeff46d0",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "pre-commit-hooks": {
+      "inputs": {
+        "flake-utils": [
+          "flake-utils"
+        ],
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1652714503,
+        "narHash": "sha256-qQKVEfDe5FqvGgkZtg5Pc491foeiDPIOeycHMqnPDps=",
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "rev": "521a524771a8e93caddaa0ac1d67d03766a8b0b3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "ref": "master",
+        "repo": "pre-commit-hooks.nix",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs",
+        "pre-commit-hooks": "pre-commit-hooks"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,68 @@
+{
+  description = "A tree-sitter grammar for Tiger";
+
+  inputs = {
+    flake-utils = {
+      type = "github";
+      owner = "numtide";
+      repo = "flake-utils";
+      ref = "master";
+    };
+
+    nixpkgs = {
+      type = "github";
+      owner = "NixOS";
+      repo = "nixpkgs";
+      ref = "nixpkgs-unstable";
+    };
+
+    pre-commit-hooks = {
+      type = "github";
+      owner = "cachix";
+      repo = "pre-commit-hooks.nix";
+      ref = "master";
+      inputs = {
+        flake-utils.follows = "flake-utils";
+        nixpkgs.follows = "nixpkgs";
+      };
+    };
+  };
+
+  outputs =
+    { self
+    , flake-utils
+    , nixpkgs
+    , pre-commit-hooks
+    }:
+    flake-utils.lib.eachDefaultSystem
+      (system:
+      let
+        pkgs = import nixpkgs {
+          inherit system;
+        };
+      in
+      rec {
+        checks = {
+          pre-commit = pre-commit-hooks.lib.${system}.run {
+            src = ./.;
+
+            hooks = {
+              nixpkgs-fmt = {
+                enable = true;
+              };
+            };
+          };
+        };
+
+        devShells = {
+          default = pkgs.mkShell {
+            nativeBuildInputs = with pkgs; [
+              nodejs
+              tree-sitter
+            ];
+
+            inherit (checks.pre-commit) shellHook;
+          };
+        };
+      });
+}