add kiwmi as git subtree and derivation to build it

Makefile

@@ -0,0 +1,3 @@
+default:
+
+install: default

build.nix

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+with import <nixpkgs> {} ; callPackage ./. {}

default.nix

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+{ stdenv
+, callPackage
+, lua5_3
+
+} :
+let
+  kiwmi = callPackage ./kiwmi.nix { lua = lua5_3; };
+in
+stdenv.mkDerivation {
+  pname = "eufon";
+  version = "0.1";
+  buildInputs = [ kiwmi ];
+  src = ./.;
+}

kiwmi.nix

@@ -0,0 +1,57 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, cairo
+, fennel
+, git
+, glib
+, libdrm
+, libinput
+, libxcb
+, libxkbcommon
+, libxml2
+, lua
+, meson
+, ninja
+, pango
+, pkg-config
+, scdoc
+, wayland
+, wayland-protocols
+, wlroots
+, xwayland
+}:
+
+stdenv.mkDerivation rec {
+  pname = "kiwmi";
+  version = "20220315";
+
+  src = ./kiwmi;
+
+  nativeBuildInputs = [
+    meson
+    ninja
+    pkg-config
+    scdoc
+  ];
+
+  buildInputs = [
+    cairo
+    fennel
+    glib
+    git # "needed to make the version string", le sigh
+    libdrm
+    libinput
+    libxcb
+    libxkbcommon
+    libxml2
+    lua
+    pango
+    wayland
+    wayland-protocols
+    wlroots
+    xwayland
+  ];
+
+#  mesonFlags = [ "-Dxwayland=enabled" ];
+}