build(nix): add Nix support

default.nix

@@ -0,0 +1,48 @@
+{
+  pkgs ? import <nixpkgs> {},
+  lib ? import <nixpkgs/lib>,
+}:
+pkgs.stdenv.mkDerivation rec {
+  pname = "tildefriends";
+  version = "0.0.19";
+
+  src = pkgs.fetchFromGitea {
+    domain = "dev.tildefriends.net";
+    owner = "cory";
+    repo = "tildefriends";
+    # rev = "v${version}";
+    rev = "47838d5e482cb4aac40190fa0414f08b8cf94d40";
+    hash = "sha256-mb5KYvWPIqgV64FOaXKHm2ownBJiiSRtdH8+YWiXwvE="; # 47838d5e482cb4aac40190fa0414f08b8cf94d40
+    fetchSubmodules = true;
+  };
+
+  nativeBuildInputs = with pkgs; [
+    gnumake
+    openssl
+    which
+  ];
+
+  buildInputs = with pkgs; [
+    openssl
+    which
+  ];
+
+  buildPhase = ''
+    make -j $NIX_BUILD_CORES release
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp -r out/release/tildefriends $out/bin
+  '';
+
+  doCheck = false;
+
+  meta = with pkgs; {
+    homepage = "https://tildefriends.net";
+    description = "Make apps and friends from the comfort of your web browser.";
+    mainProgram = "tildefriends";
+    license = with lib.licenses; [mit];
+    platforms = lib.platforms.all;
+  };
+}