Add Nix package (#75)

* Add Nix package

* Change variable name at will's behest

.gitignore

@@ -1 +1,4 @@
-target
+target
+.envrc
+.direnv
+result

flake.nix

@@ -0,0 +1,28 @@
+{
+  description = "A JS devtool orchestrator";
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils }:
+  flake-utils.lib.eachDefaultSystem (system:
+  let
+    manifest = (pkgs.lib.importTOML ./crates/depot/Cargo.toml).package;
+    pkgs = import nixpkgs { inherit system; };
+    depot-js = pkgs.rustPlatform.buildRustPackage rec {
+      pname = manifest.name;
+      version = manifest.version;
+      cargoLock.lockFile = ./Cargo.lock;
+      src = pkgs.lib.cleanSource ./.;    
+      nativeBuildInputs = [ pkgs.git ];
+      # NOTE: depot's tests have a lot of external dependencies: node, biome, ...
+      # We'll ignore them for now and figure it out later ;)
+      doCheck = false;
+    };
+  in {
+    packages = {
+      default = depot-js;
+    };
+  });
+}