parser complete

flake.nix

@@ -0,0 +1,58 @@
+{
+  inputs.nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
+  inputs.systems.url = "github:nix-systems/default-linux";
+
+  outputs =
+    {
+      self,
+      nixpkgs,
+      systems,
+    }:
+    let
+      mkDeps = pkgs: {
+        dev = getPkgs {
+          inherit (pkgs)
+            rust-analyzer
+            clippy
+            rustc
+            cargo
+            rustfmt
+            ;
+        };
+        build = getPkgs {
+          # rustc + cargo are inherent in rustPlatform
+        };
+      };
+      forAllSystems =
+        function:
+        nixpkgs.lib.genAttrs (import systems) (
+          system:
+          let
+            pkgs = nixpkgs.legacyPackages.${system};
+          in
+          function pkgs (mkDeps pkgs)
+        );
+      getPkgs = builtins.attrValues;
+    in
+    {
+      devShells = forAllSystems (
+        pkgs: deps: {
+          default = pkgs.mkShell {
+            packages = with deps; dev ++ build;
+          };
+        }
+      );
+      packages = forAllSystems (
+        pkgs: deps: {
+          default =
+            let
+              inherit (pkgs.rustPlatform) buildRustPackage;
+            in
+            buildRustPackage {
+              src = ./.;
+              cargoLock.lockFile = ./Cargo.lock;
+            };
+        }
+      );
+    };
+}