init: gig, because gitignores are boring

packages/nix/package.nix

@@ -0,0 +1,18 @@
+{...}: {
+  perSystem = {pkgs, ...}: {
+    packages.gig = pkgs.rustPlatform.buildRustPackage {
+      pname = "gig";
+      version = "v0.0.1";
+
+      src = ../..;
+      cargoLock.lockFile = ../../Cargo.lock;
+
+      buildInputs = with pkgs; [
+        openssl
+        libgit2
+      ];
+
+      nativeBuildInputs = with pkgs; [pkg-config];
+    };
+  };
+}

packages/nix/shell.nix

@@ -0,0 +1,12 @@
+{...}: {
+  perSystem = {pkgs, ...}: {
+    devShells.default = pkgs.mkShell {
+      packages = with pkgs; [
+        cargo
+        pkg-config
+        openssl
+        libgit2
+      ];
+    };
+  };
+}

packages/nix/systems.nix

@@ -0,0 +1,5 @@
+{...}: {
+  systems = [
+    "x86_64-linux"
+  ];
+}