From defd062a0109e4da78fc7fa93e59154f37316ca4 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
---
 flake.lock | 27 +++++++++++++++++++++++++++
 flake.nix  | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 78 insertions(+)
 create mode 100644 flake.lock
 create mode 100644 flake.nix

diff --git a/flake.lock b/flake.lock
new file mode 100644
index 000000000..581384362
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1681411673,
+        "narHash": "sha256-23S0skJVstbQtrhy+65Bi4Jrdw74hY1OYbBnuuQausc=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "80d54821fffaffbc90409a1262ea91071e0dff8f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "release-22.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 000000000..c4999b5ce
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,51 @@
+{
+  description = "THE MIMBLEWIMBLE BLOCKCHAIN.";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/release-22.11";
+  };
+
+  outputs = { self, nixpkgs, }:
+    let
+      supportedSystems =
+        [
+          "x86_64-linux"
+          "x86_64-darwin"
+          "aarch64-linux"
+          "aarch64-darwin"
+        ];
+      forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
+      nixpkgsFor = forAllSystems (system: import nixpkgs
+        { inherit system; overlays = [ self.overlay ]; }
+      );
+    in
+    {
+      overlay = final: prev:
+        with final;
+        {
+          grin = pkgs.rustPlatform.buildRustPackage {
+            pname = "grin";
+            version = "5.2.0-alpha.2";
+            src = ./.;
+
+            cargoLock = {
+              lockFile = ./Cargo.lock;
+            };
+
+            nativeBuildInputs = [ pkgs.llvmPackages_latest.clang ];
+            buildInputs = [ pkgs.ncurses ];
+            LIBCLANG_PATH =
+              "${pkgs.llvmPackages_latest.libclang.lib}/lib";
+
+            # do not let test results block the build process
+            doCheck = false;
+          };
+        };
+
+      packages = forAllSystems (
+        system: {
+          default = nixpkgsFor.${system}.grin;
+        }
+      );
+    };
+}