build: add flake.nix

hallettj · Feb 25, 2024 · 92856b8 · 92856b8
1 parent 9d703c6
commit 92856b8
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diff --git a/.envrc b/.envrc
@@ -0,0 +1 @@
+use flake
diff --git 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
diff --git a/flake.nix 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
@@ -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"
+  '';
+}