Add a Nix flake (no NixOS module yet)

.gitignore

@@ -7,3 +7,5 @@
 /.gdb_history
 
 /ca
+/result
+

flake.lock

@@ -0,0 +1,74 @@
+{
+  "nodes": {
+    "naersk": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      },
+      "locked": {
+        "lastModified": 1653413650,
+        "narHash": "sha256-wojDHjb+eU80MPH+3HQaK0liUy8EgR95rvmCl24i58Y=",
+        "owner": "nix-community",
+        "repo": "naersk",
+        "rev": "69daaceebe12c070cd5ae69ba38f277bbf033695",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "naersk",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1653326962,
+        "narHash": "sha256-W8feCYqKTsMre4nAEpv5Kx1PVFC+hao/LwqtB2Wci/8=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "41cc1d5d9584103be4108c1815c350e07c807036",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1653326962,
+        "narHash": "sha256-W8feCYqKTsMre4nAEpv5Kx1PVFC+hao/LwqtB2Wci/8=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "41cc1d5d9584103be4108c1815c350e07c807036",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "naersk": "naersk",
+        "nixpkgs": "nixpkgs_2",
+        "utils": "utils"
+      }
+    },
+    "utils": {
+      "locked": {
+        "lastModified": 1652776076,
+        "narHash": "sha256-gzTw/v1vj4dOVbpBSJX4J0DwUR6LIyXo7/SuuTJp1kM=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "04c1b180862888302ddfb2e3ad9eaa63afc60cf8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,47 @@
+{
+  description = "OliveFS";
+
+  inputs = {
+    utils.url = "github:numtide/flake-utils";
+    naersk.url = "github:nix-community/naersk";
+  };
+
+  outputs = { self, nixpkgs, utils, naersk }:
+    utils.lib.eachDefaultSystem (system: let
+      pkgs = nixpkgs.legacyPackages."${system}";
+      naersk-lib = naersk.lib."${system}";
+    in rec {
+      # `nix build`
+      packages.olivefs = naersk-lib.buildPackage {
+        pname = "olivefs";
+        root = ./.;
+
+        buildInputs = with pkgs; [
+          pkgconfig
+          fuse
+        ];
+        nativeBuildInputs = with pkgs; [
+          # Idea from https://github.com/NixOS/nixpkgs/blob/634141959076a8ab69ca2cca0f266852256d79ee/pkgs/servers/matrix-conduit/default.nix
+          pkgs.rust.packages.stable.rustPlatform.bindgenHook
+        ];
+      };
+
+      defaultPackage = packages.olivefs;
+
+      # NixOS Modules
+#       nixosModules = {
+#         olivefsd = import ./nixos_modules/olivefsd.nix self;
+#       };
+
+      # `nix run`
+#       apps.olivefs = utils.lib.mkApp {
+#         drv = packages.olivefs;
+#       };
+#       defaultApp = apps.olivefs;
+
+      # `nix develop`
+      devShell = pkgs.mkShell {
+        nativeBuildInputs = with pkgs; [ rustc cargo ];
+      };
+    });
+}