From 4439a56af696a48d018acc0fad7c1a34976d8fae Mon Sep 17 00:00:00 2001
From: chives101 <chives101@users.noreply.github.com>
Date: Thu, 13 Apr 2023 12:37:10 +0800
Subject: [PATCH] Add nix/flake support

Example:

nix build github:mimblewimble/grin

./result/bin/grin --help
---
 etc/default.nix | 18 +++++++++++++++
 flake.lock      | 61 +++++++++++++++++++++++++++++++++++++++++++++++++
 flake.nix       | 21 +++++++++++++++++
 3 files changed, 100 insertions(+)
 create mode 100644 etc/default.nix
 create mode 100644 flake.lock
 create mode 100644 flake.nix

diff --git a/etc/default.nix b/etc/default.nix
new file mode 100644
index 0000000000..af1e2c85c6
--- /dev/null
+++ b/etc/default.nix
@@ -0,0 +1,18 @@
+{ pkgs }:
+{
+  app = pkgs.rustPlatform.buildRustPackage ({
+    pname = "grin";
+    version = "5.2.0-alpha.2";
+    src = ../.;
+
+    cargoLock = {
+      lockFile = ../Cargo.lock;
+    };
+
+    cargoSha256 = "sha256-iCMFlrcoIrpClQOYQpg07DPePdTFLFEkeap2kE0ijzU=";
+
+    nativeBuildInputs = [ pkgs.llvmPackages_latest.clang ];
+    buildInputs = [ pkgs.ncurses ];
+    LIBCLANG_PATH = "${pkgs.llvmPackages_latest.libclang.lib}/lib";
+  });
+}
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000000..6419f84efb
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,61 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1681202837,
+        "narHash": "sha256-H+Rh19JDwRtpVPAWp64F+rlEtxUWBAQW28eAi3SRSzg=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "cfacdce06f30d2b68473a46042957675eebb3401",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1681269223,
+        "narHash": "sha256-i6OeI2f7qGvmLfD07l1Az5iBL+bFeP0RHixisWtpUGo=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "87edbd74246ccdfa64503f334ed86fa04010bab9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-22.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "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
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000000..624a246578
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,21 @@
+{
+  description = "THE MIMBLEWIMBLE BLOCKCHAIN.";
+
+  inputs = {
+    nixpkgs.url      = "github:NixOS/nixpkgs/nixos-22.11";
+    flake-utils.url  = "github:numtide/flake-utils";
+  };
+
+  outputs = inputs: with inputs;
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = nixpkgs.legacyPackages.${system};
+        code = pkgs.callPackage etc/. {};
+      in rec {
+        packages = {
+          app = code.app;
+          default = packages.app;
+        };
+      }
+    );
+}