Add flake.nix

Author: manveru

flake.lock

@@ -0,0 +1,86 @@
+{
+  inputs = {
+    flake-parts.url = "github:hercules-ci/flake-parts";
+    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
+    treefmt-nix.url = "github:numtide/treefmt-nix";
+    treefmt-nix.inputs.nixpkgs.follows = "nixpkgs";
+    crane.url = "github:ipetkov/crane";
+    crane.inputs.nixpkgs.follows = "nixpkgs";
+  };
+
+  outputs = inputs:
+    inputs.flake-parts.lib.mkFlake {inherit inputs;} {
+      systems = ["x86_64-linux" "aarch64-linux" "aarch64-darwin" "x86_64-darwin"];
+
+      imports = [inputs.treefmt-nix.flakeModule];
+
+      perSystem = {
+        pkgs,
+        config,
+        system,
+        self',
+        ...
+      }: let
+        inherit (inputs.nixpkgs) lib;
+        craneLib = inputs.crane.lib.${system};
+
+        clean = root:
+          lib.cleanSourceWith {
+            src = lib.cleanSource root;
+            filter = orig_path: type: let
+              path = builtins.toString orig_path;
+              base = builtins.baseNameOf path;
+              parentDir = builtins.baseNameOf (builtins.dirOf path);
+              matchesSuffix = lib.any (suffix: lib.hasSuffix suffix base) [".rs" ".toml" ".md"];
+              isCargoFile = base == "Cargo.lock";
+              isCargoConfig = parentDir == ".cargo" && base == "config";
+              isOpenApiYaml = base == "openapi.yaml";
+            in
+              type == "directory" || matchesSuffix || isCargoFile || isCargoConfig || isOpenApiYaml;
+          };
+
+        buildPackage = name: cargoToml:
+          craneLib.buildPackage {
+            inherit (craneLib.crateNameFromCargoToml {inherit cargoToml;}) pname version;
+            cargoExtraArgs = "-p ${name}";
+            src = clean ./.;
+            buildInputs = [
+              pkgs.gnum4
+              pkgs.pkg-config
+              pkgs.openssl
+            ];
+          };
+      in {
+        packages = {
+          mithril-client = buildPackage "mithril-client" ./mithril-client/Cargo.toml;
+          mithril-aggregator = buildPackage "mithril-aggregator" ./mithril-aggregator/Cargo.toml;
+          mithril-signer = buildPackage "mithril-signer" ./mithril-signer/Cargo.toml;
+        };
+
+        devShells.default = pkgs.mkShell {
+          inputsFrom = [self'.packages.mithril-client];
+
+          nativeBuildInputs = [
+            pkgs.cargo
+            pkgs.rustc
+            config.treefmt.package
+          ];
+
+          shellHook = ''
+            ln -sf ${config.treefmt.build.configFile} treefmt.toml
+          '';
+        };
+
+        formatter = pkgs.writeShellApplication {
+          name = "treefmt";
+          text = "exec ${config.treefmt.package}/bin/treefmt";
+        };
+
+        treefmt = {
+          programs.alejandra.enable = true;
+          programs.rustfmt.enable = true;
+          projectRootFile = "flake.nix";
+        };
+      };
+    };
+}