diff --git a/README.md b/README.md
index a31c033..960a9c9 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,26 @@
 # eufon
 
 > *euphony*: _noun_ Harmonious arrangement of sounds in composition; a smooth and agreeable combination of articulate elements in any piece of writing.
+
+A mostly Fennel-based graphical environment tailored for the Pinephone
+(other Linux-based mobile devices exist). The principles we aspire to are
+
+* "habitable software" - build the system in such a way that a
+  technically competent user may change it to serve their needs,
+  potentially even in ways that weren't anticipated in the original
+  design.  Emacs has this quality.
+
+* optimised for touchscreens. My phone has no hardware keyboard and few
+  hardware buttons, let's play to its strengths instead of compensating for
+  its weaknesses
+
+As of 2022 these principles are more aspirational than actual.
+
+## Running it
+
+     $ nix-shell build.nix
+     nix-shell$ lua -e 'os.execute("kiwmi -c init.lua")'
+
+This is suboptimally hairy, at least for the moment: Nix makes a
+wrapper script for the Lua executable that has appropriate `LUA_PATH`
+and `LUA_CPATH` settings, but it doesn't do the same for kiwmi
diff --git a/default.nix b/default.nix
index 82cfdf9..d0fa895 100644
--- a/default.nix
+++ b/default.nix
@@ -1,14 +1,19 @@
 { stdenv
 , callPackage
+, fennel
 , lua5_3
-
 } :
 let
-  kiwmi = callPackage ./kiwmi.nix { lua = lua5_3; };
+  fennel_ = (fennel.override { lua = lua5_3; });
+  luaWithPackages = lua5_3.withPackages (ps: with ps; [
+    (toLuaModule fennel_)
+    busted
+  ]);
+  kiwmi = callPackage ./kiwmi.nix { lua = luaWithPackages; };
 in
 stdenv.mkDerivation {
   pname = "eufon";
   version = "0.1";
-  buildInputs = [ kiwmi ];
+  buildInputs = [ luaWithPackages kiwmi ];
   src = ./.;
 }
diff --git a/init.lua b/init.lua
new file mode 100644
index 0000000..4dbadcc
--- /dev/null
+++ b/init.lua
@@ -0,0 +1,6 @@
+print(os.getenv("LUA_PATH"))
+print(os.getenv("LUA_CPATH"))
+
+local fennel = require("fennel")
+table.insert(package.loaders or package.searchers, fennel.searcher)
+fennel.dofile("rc.fnl")
diff --git a/rc.fnl b/rc.fnl
new file mode 100644
index 0000000..9038d26
--- /dev/null
+++ b/rc.fnl
@@ -0,0 +1,4 @@
+(kiwmi:on "output" #(doto $1 (: :set_mode 360 720 0)))
+
+(kiwmi:spawn "swaybg -c '#ff00ff'")
+(kiwmi:spawn "foot")