Update nix flake impl

.github/workflows/format.yaml

@@ -9,21 +9,14 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  check:
+  nix-flake-check:
+    name: Nix Flake Check
     runs-on: ubuntu-latest
-
     steps:
+      - name: Install Nix
+        uses: DeterminateSystems/nix-installer-action@de22e16c4711fca50c816cc9081563429d1cf563 # v10
+
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Configure Node.js
-        uses: actions/setup-node@v4
-        with:
-          cache: npm
-          node-version: lts/*
-
-      - name: Install dependencies
-        run: npm ci
-
-      - name: Check code formatting
-        run: npm run format --workspaces
+      - run: nix flake check

.github/workflows/pull-request-edit.yaml

@@ -18,8 +18,8 @@ jobs:
   run-scan:
     name: Trigger Renovate Scan
     if:
-      ${{ contains(github.event.pull_request.body, '[x] <!-- rebase-check -->')
-      && github.event.pull_request.user.login == 'bitgo-renovate-bot[bot]' }}
+      ${{ contains(github.event.pull_request.body, '[x] <!-- rebase-check -->') &&
+      github.event.pull_request.user.login == 'bitgo-renovate-bot[bot]' }}
     runs-on: ubuntu-latest
     steps:
       - id: trigger-renovate-scan

.gitignore

@@ -1,3 +1,4 @@
+.pre-commit-config.yaml
 .direnv/
 coverage/
 dist/

.prettierignore

@@ -1,3 +1,3 @@
 coverage/
 dist/
-package-lock.json
+flake.lock

README.md

@@ -25,8 +25,8 @@ type-checked and runtime-validated HTTP calls in a standardized manner.
 
 ## io-ts Compatibility
 
-**api-ts** is built and tested against the stable channel of io-ts (v2.1).
-**api-ts** is not currently compatible with the experimental channel of io-ts (v2.2).
+**api-ts** is built and tested against the stable channel of io-ts (v2.1). **api-ts** is
+not currently compatible with the experimental channel of io-ts (v2.2).
 
 ## Developing
 

flake.nix

@@ -1,34 +1,53 @@
 {
   description = "api-ts";
-
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs";
-    flake-utils.url = "github:numtide/flake-utils";
+    pre-commit-hooks = {
+      url = "github:cachix/pre-commit-hooks.nix";
+      inputs = {
+        nixpkgs.follows = "nixpkgs";
+      };
+    };
   };
 
   outputs = {
     self,
     nixpkgs,
-    flake-utils,
-  }: (
-    flake-utils.lib.eachDefaultSystem (
-      system: (
-        let
-          pkgs = nixpkgs.legacyPackages.${system};
-        in {
-          devShell = pkgs.mkShell {
-            name = "api-ts-shell";
+    pre-commit-hooks,
+  }: let
+    forEachSystem = nixpkgs.lib.genAttrs [
+      "aarch64-darwin"
+      "aarch64-linux"
+      "x86_64-darwin"
+      "x86_64-linux"
+    ];
+  in {
+    checks = forEachSystem (system: let
+      pre-commit-check = pre-commit-hooks.lib.${system}.run {
+        src = ./.;
+        hooks = {
+          actionlint.enable = true;
+          alejandra.enable = true;
+          prettier.enable = true;
+        };
+      };
+    in {
+      inherit pre-commit-check;
+    });
 
-            packages = with pkgs; [
-              nodejs
-            ];
+    devShells = forEachSystem (system: let
+      pkgs = nixpkgs.legacyPackages.${system};
+    in {
+      default = pkgs.mkShell {
+        packages = with pkgs; [
+          nodejs
+        ];
 
-            shellHook = ''
-              export PATH="$(pwd)/node_modules/.bin:$PATH"
-            '';
-          };
-        }
-      )
-    )
-  );
+        shellHook = ''
+          ${self.checks.${system}.pre-commit-check.shellHook}
+          export PATH="$(pwd)/node_modules/.bin:$PATH"
+        '';
+      };
+    });
+  };
 }