add flake.nix

.gitignore

@@ -1,4 +1,5 @@
 target
 __pycache__
 .vscode
-.idea
+.idea
+result

flake.nix

@@ -0,0 +1,124 @@
+{
+  description = "Build teos (The Eye of Satoshi) server and plugin";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+
+    crane = {
+      url = "github:ipetkov/crane";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    fenix = {
+      url = "github:nix-community/fenix";
+      inputs.nixpkgs.follows = "nixpkgs";
+      inputs.rust-analyzer-src.follows = "";
+    };
+
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, crane, fenix, flake-utils, ... }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = nixpkgs.legacyPackages.${system};
+
+        inherit (pkgs) lib;
+
+        craneLib = crane.mkLib pkgs;
+        src = craneLib.cleanCargoSource ./.;
+
+        # Common arguments can be set here to avoid repeating them later
+        commonArgs = {
+          inherit src;
+          strictDeps = true;
+
+	  nativeBuildInputs = [ 
+            pkgs.pkg-config 
+            pkgs.openssl 
+            pkgs.rustfmt # needed for tonic build
+          ];
+
+          buildInputs = [
+            # Add additional build inputs here
+            pkgs.pkg-config
+          ] ++ lib.optionals pkgs.stdenv.isDarwin [
+            # Additional darwin specific inputs can be set here
+            pkgs.libiconv
+          ];
+
+          # TODO: hack but without there are warnings and I can't make other method work 
+          pname = "teos";
+          version = "0.2.0";
+
+          PROTOC = "${pkgs.protobuf}/bin/protoc";
+          PKG_CONFIG_PATH = "${pkgs.openssl.dev}/lib/pkgconfig";
+        };
+
+        craneLibLLvmTools = craneLib.overrideToolchain
+          (fenix.packages.${system}.complete.withComponents [
+            "cargo"
+            "llvm-tools"
+            "rustc"
+          ]);
+
+        # Build *just* the cargo dependencies (of the entire workspace),
+        # so we can reuse all of that work (e.g. via cachix) when running in CI
+        # It is *highly* recommended to use something like cargo-hakari to avoid
+        # cache misses when building individual top-level-crates
+        cargoArtifacts = craneLib.buildDepsOnly commonArgs;
+
+        individualCrateArgs = commonArgs // {
+          inherit cargoArtifacts;
+          inherit (craneLib.crateNameFromCargoToml { inherit src; }) version;
+          # NB: we disable tests since we'll run them all via cargo-nextest
+          doCheck = false;
+        };
+
+        fileSetForCrate = crate: lib.fileset.toSource {
+          root = ./.;
+          fileset = lib.fileset.unions [
+            ./Cargo.toml
+            ./Cargo.lock
+            ./teos-common
+            ./watchtower-plugin
+            ./teos
+            crate
+          ];
+        };
+
+        # Build the top-level crates of the workspace as individual derivations.
+        # This allows consumers to only depend on (and build) only what they need.
+        # Though it is possible to build the entire workspace as a single derivation,
+        # so this is left up to you on how to organize things
+        plugin = craneLib.buildPackage (individualCrateArgs // {
+          pname = "watchtower-plugin";
+          version = "0.2.0"; # TODO: hack but without there are warnings and I can't make other method work 
+          cargoExtraArgs = "-p watchtower-plugin";
+          src = fileSetForCrate ./watchtower-plugin;
+        });
+        teos = craneLib.buildPackage (individualCrateArgs // {
+          pname = "teos";
+          version = "0.2.0"; # TODO: hack but without there are warnings and I can't make other method work 
+          cargoExtraArgs = "-p teos";
+          src = fileSetForCrate ./teos;
+        });
+      in
+      {
+        packages = {
+          inherit plugin teos;
+          default = teos;
+        };
+
+        apps = {
+          plugin = flake-utils.lib.mkApp {
+            drv = plugin;
+          };
+          teos = flake-utils.lib.mkApp {
+            drv = teos;
+          };
+        };
+
+      });
+}
+