From 92856b8e8d6d360f773b7894c5a1950cd2486771 Mon Sep 17 00:00:00 2001
From: Jesse Hallett <jesse@sitr.us>
Date: Sun, 25 Feb 2024 14:52:12 -0800
Subject: [PATCH] build: add flake.nix

---
 .envrc                |  1 +
 .gitignore            |  4 ++++
 flake.lock            | 43 +++++++++++++++++++++++++++++++++++++++++++
 flake.nix             | 25 +++++++++++++++++++++++++
 git-format-staged.nix | 18 ++++++++++++++++++
 5 files changed, 91 insertions(+)
 create mode 100644 .envrc
 create mode 100644 flake.lock
 create mode 100644 flake.nix
 create mode 100644 git-format-staged.nix

diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..3550a30
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use flake
diff --git a/.gitignore b/.gitignore
index d95266a..f5d4aed 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,7 @@ yarn-error.log
 
 # Misc
 .DS_Store
+
+# Nix & direnv
+/.direnv
+/result
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..d900510
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,43 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1708807242,
+        "narHash": "sha256-sRTRkhMD4delO/hPxxi+XwLqPn8BuUq6nnj4JqLwOu0=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "73de017ef2d18a04ac4bfd0c02650007ccb31c2a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "systems": "systems"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..43aedc1
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,25 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    systems.url = "github:nix-systems/default";
+  };
+
+  outputs = { self, nixpkgs, systems }:
+    let
+      eachSystem = nixpkgs.lib.genAttrs (import systems);
+      pkgs = eachSystem (system: nixpkgs.legacyPackages.${system});
+    in
+    {
+      packages = eachSystem (system: {
+        default = pkgs.${system}.callPackage ./git-format-staged.nix { };
+      });
+      devShells = eachSystem (system: {
+        default = pkgs.${system}.mkShell {
+          nativeBuildInputs = with pkgs.${system}; [
+            nodejs_18
+            python3
+          ];
+        };
+      });
+    };
+}
diff --git a/git-format-staged.nix b/git-format-staged.nix
new file mode 100644
index 0000000..eb1c95b
--- /dev/null
+++ b/git-format-staged.nix
@@ -0,0 +1,18 @@
+# Nix packaging for git-format-staged
+{ stdenvNoCC
+, python3
+}:
+let
+  manifest = builtins.fromJSON (builtins.readFile ./package.json);
+in
+stdenvNoCC.mkDerivation {
+  name = "git-format-staged";
+  version = manifest.version;
+  src = ./.;
+  buildInputs = [ python3 ];
+  installPhase = ''
+    mkdir -p "$out/bin"
+    cp "$src/git-format-staged" "$out/bin/"
+    chmod +x "$out/bin/git-format-staged"
+  '';
+}