Merge pull request #266 from hashrelay/flake

Add nix flake.

This allow to build the project executables with nix.

.github/workflows/build.yaml

@@ -66,4 +66,17 @@ jobs:
         uses: psf/black@stable
         with:
           src: "./watchtower-plugin/tests"
-          options: "--check -l 120"
+          options: "--check -l 120"
+
+  check-flake:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v5
+      - name: Check Nix flake inputs
+        uses: DeterminateSystems/flake-checker-action@v12
+      - name: Install Nix
+        uses: cachix/install-nix-action@v31
+      - name: Check flake
+        run: nix flake check
+

.gitignore

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

flake.lock

@@ -0,0 +1,116 @@
+{
+  "nodes": {
+    "crane": {
+      "locked": {
+        "lastModified": 1758758545,
+        "narHash": "sha256-NU5WaEdfwF6i8faJ2Yh+jcK9vVFrofLcwlD/mP65JrI=",
+        "owner": "ipetkov",
+        "repo": "crane",
+        "rev": "95d528a5f54eaba0d12102249ce42f4d01f4e364",
+        "type": "github"
+      },
+      "original": {
+        "owner": "ipetkov",
+        "repo": "crane",
+        "type": "github"
+      }
+    },
+    "fenix": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "rust-analyzer-src": "rust-analyzer-src"
+      },
+      "locked": {
+        "lastModified": 1758782550,
+        "narHash": "sha256-olCvyP5r6+HQTl2EUudtjlA5UammsBpkzAl0l9+utZc=",
+        "owner": "nix-community",
+        "repo": "fenix",
+        "rev": "32f4e350c03cc5762be811e9c700e8696cd13c02",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "fenix",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1758589230,
+        "narHash": "sha256-zMTCFGe8aVGTEr2RqUi/QzC1nOIQ0N1HRsbqB4f646k=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "d1d883129b193f0b495d75c148c2c3a7d95789a0",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-25.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "crane": "crane",
+        "fenix": "fenix",
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "rust-analyzer-src": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1758620797,
+        "narHash": "sha256-Ly4rHgrixFMBnkbMursVt74mxnntnE6yVdF5QellJ+A=",
+        "owner": "rust-lang",
+        "repo": "rust-analyzer",
+        "rev": "905641f3520230ad6ef421bcf5da9c6b49f2479b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "rust-lang",
+        "ref": "nightly",
+        "repo": "rust-analyzer",
+        "type": "github"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,114 @@
+{
+  description = "Build teos (The Eye of Satoshi) server and plugin";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
+
+    crane.url = "github:ipetkov/crane";
+
+    fenix = {
+      url = "github:nix-community/fenix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs =
+    {
+      nixpkgs,
+      crane,
+      fenix,
+      flake-utils,
+      ...
+    }:
+    flake-utils.lib.eachDefaultSystem (
+      system:
+      let
+        pkgs = nixpkgs.legacyPackages.${system};
+
+        inherit (pkgs) lib;
+
+        craneLib = (crane.mkLib pkgs).overrideToolchain fenix.packages.${system}.stable.minimalToolchain;
+
+        env = {
+          PROTOC = "${pkgs.protobuf}/bin/protoc";
+          PKG_CONFIG_PATH = "${pkgs.openssl.dev}/lib/pkgconfig";
+          LD_LIBRARY_PATH = lib.makeLibraryPath [ pkgs.openssl.out ];
+        };
+        commonArgs = {
+          inherit env;
+          strictDeps = true;
+
+          nativeBuildInputs = [
+            pkgs.pkg-config
+            pkgs.rustfmt # needed for tonic build
+            pkgs.cacert
+            pkgs.openssl.dev
+          ];
+
+          buildInputs =
+            [ ]
+            ++ lib.optionals pkgs.stdenv.isDarwin [
+              # Additional darwin specific inputs can be set here
+              pkgs.libiconv
+            ];
+        };
+
+        fileSetForCrate =
+          crate:
+          lib.fileset.toSource {
+            root = ./.;
+            fileset = lib.fileset.unions [
+              ./Cargo.toml
+              ./Cargo.lock
+              ./teos-common
+              ./teos
+              ./watchtower-plugin
+              crate
+            ];
+          };
+
+        plugin = craneLib.buildPackage (
+          commonArgs
+          // {
+            pname = "watchtower-plugin";
+            cargoExtraArgs = "-p watchtower-plugin";
+            src = fileSetForCrate ./watchtower-plugin;
+            inherit (craneLib.crateNameFromCargoToml { cargoToml = ./watchtower-plugin/Cargo.toml; }) version;
+          }
+        );
+        teos = craneLib.buildPackage (
+          commonArgs
+          // {
+            pname = "teos";
+            cargoExtraArgs = "-p teos";
+            src = fileSetForCrate ./teos;
+            inherit (craneLib.crateNameFromCargoToml { cargoToml = ./teos/Cargo.toml; }) version;
+          }
+        );
+      in
+      {
+        packages = {
+          inherit plugin teos;
+          default = teos;
+        };
+
+        apps = {
+          plugin = flake-utils.lib.mkApp { drv = plugin; };
+          teos = flake-utils.lib.mkApp { drv = teos; };
+        };
+
+        formatter = pkgs.nixfmt-tree;
+
+        checks = {
+          inherit teos plugin;
+        };
+
+        devShells.default = craneLib.devShell {
+          inherit env;
+          packages = commonArgs.buildInputs ++ commonArgs.nativeBuildInputs;
+        };
+      }
+    );
+}