From d03ec53f168e4e28464c1592665dbd594307d8b1 Mon Sep 17 00:00:00 2001
From: ocfox <i@ocfox.me>
Date: Fri, 24 Mar 2023 21:55:08 +0800
Subject: [PATCH] add flake support

---
 .envrc     |  11 ++++++
 .gitignore |   2 ++
 flake.lock | 102 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 flake.nix  |  42 ++++++++++++++++++++++
 4 files changed, 157 insertions(+)
 create mode 100644 .envrc
 create mode 100644 flake.lock
 create mode 100644 flake.nix

diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..ce4386f
--- /dev/null
+++ b/.envrc
@@ -0,0 +1,11 @@
+if ! has nix_direnv_version || ! nix_direnv_version 2.2.1; then
+  source_url "https://raw.githubusercontent.com/nix-community/nix-direnv/2.2.1/direnvrc" "sha256-zelF0vLbEl5uaqrfIzbgNzJWGmLzCmYAkInj/LNxvKs="
+fi
+
+nix_direnv_watch_file devenv.nix
+nix_direnv_watch_file devenv.lock
+nix_direnv_watch_file devenv.yaml
+if ! use flake . --impure
+then
+  echo "devenv could not be build. The devenv environment was not loaded. Make the necessary changes to devenv.nix and hit enter to try again." >&2
+fi
diff --git a/.gitignore b/.gitignore
index eb5a316..895f7d5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,3 @@
 target
+.devenv
+.direnv
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..7d912ee
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,102 @@
+{
+  "nodes": {
+    "fenix": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "rust-analyzer-src": "rust-analyzer-src"
+      },
+      "locked": {
+        "lastModified": 1679638953,
+        "narHash": "sha256-OFATLLft/9vXHf+zqa6OQGTQ2rrCuD97KRzsrPsJRdY=",
+        "owner": "nix-community",
+        "repo": "fenix",
+        "rev": "1336152ce31c0f781ae121aa297a5699c642a9fe",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "fenix",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1678901627,
+        "narHash": "sha256-U02riOqrKKzwjsxc/400XnElV+UtPUQWpANPlyazjH0=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "93a2b84fc4b70d9e089d029deacc3583435c2ed6",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "naersk": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1679567394,
+        "narHash": "sha256-ZvLuzPeARDLiQUt6zSZFGOs+HZmE+3g4QURc8mkBsfM=",
+        "owner": "nix-community",
+        "repo": "naersk",
+        "rev": "88cd22380154a2c36799fe8098888f0f59861a15",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "naersk",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1679437018,
+        "narHash": "sha256-vOuiDPLHSEo/7NkiWtxpHpHgoXoNmrm+wkXZ6a072Fc=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "19cf008bb18e47b6e3b4e16e32a9a4bdd4b45f7e",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-unstable",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "fenix": "fenix",
+        "flake-utils": "flake-utils",
+        "naersk": "naersk",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "rust-analyzer-src": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1679520343,
+        "narHash": "sha256-AJGSGWRfoKWD5IVTu1wEsR990wHbX0kIaolPqNMEh0c=",
+        "owner": "rust-lang",
+        "repo": "rust-analyzer",
+        "rev": "eb791f31e688ae00908eb75d4c704ef60c430a92",
+        "type": "github"
+      },
+      "original": {
+        "owner": "rust-lang",
+        "ref": "nightly",
+        "repo": "rust-analyzer",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..7c6b8f7
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,42 @@
+{
+  inputs = {
+    nixpkgs.url = "nixpkgs/nixos-unstable";
+    fenix = {
+      url = "github:nix-community/fenix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    flake-utils.url = "github:numtide/flake-utils";
+    naersk = {
+      url = "github:nix-community/naersk";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+  };
+
+  outputs = { self, fenix, flake-utils, naersk, nixpkgs }:
+    flake-utils.lib.eachDefaultSystem (system: {
+      packages.default =
+        let
+          pkgs = nixpkgs.legacyPackages.${system};
+          toolchain = with fenix.packages.${system}; combine [
+            minimal.cargo
+            minimal.rustc
+          ];
+        in
+        (naersk.lib.${system}.override {
+          cargo = toolchain;
+          rustc = toolchain;
+        }).buildPackage {
+          hardeningDisable = [ "all" ];
+          buildInputs = with pkgs; [
+            clang
+            zlib
+          ];
+          nativeBuildInputs = with pkgs; [
+            elfutils
+            pkg-config
+          ];
+          src = ./.;
+        };
+    });
+}
+