From 59918fa4f925c063c8beec7142f786eda5746cc4 Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Sun, 10 Oct 2021 14:22:31 +0200
Subject: Add ulisp-arm derivation

---
 core.nix  | 22 ++++++++++++++++++++-
 flake.nix |  7 ++++---
 ulisp.nix | 65 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 90 insertions(+), 4 deletions(-)
 create mode 100644 ulisp.nix

diff --git a/core.nix b/core.nix
index fba64e7..8d2575e 100644
--- a/core.nix
+++ b/core.nix
@@ -1,6 +1,21 @@
 { pkgs, ... }:
 
-pkgs.stdenvNoCC.mkDerivation rec {
+let
+  spi = pkgs.fetchFromGitHub {
+    owner = "PaulStoffregen";
+    repo = "SPI";
+    rev = "574ab8c7a8a45ea21cc56dcc6b7361da90868e86";
+    sha256 = "I3M7w9SNEXvPD0ynuZ38bnTaenGEORg72E5YC2x6ek4=";
+  };
+
+  wire = pkgs.fetchFromGitHub {
+    owner = "PaulStoffregen";
+    repo = "Wire";
+    rev = "15018075857fa0176d8a5fc610fc564427282ca0";
+    sha256 = "GTfqmQykFS4nXXPBhQHe2gpEUY2sH0ESHh28ZrIW/dE=";
+  };
+
+in pkgs.stdenvNoCC.mkDerivation rec {
   name = "teensy-core";
   version = "1.54";
 
@@ -27,8 +42,13 @@ pkgs.stdenvNoCC.mkDerivation rec {
                --subst-var-by TEENSY_INCLUDE . \
                --subst-var-by TEENSY_LIB .
     cp ${./flags.mk} flags.mk
+
+    cp ${spi}/*.{cpp,h} .
+    cp ${wire}/*.{cpp,h} .
+
     make
     ar rvs libteensy-core.a *.o
+
     popd
   '';
 
diff --git a/flake.nix b/flake.nix
index 03109f4..560b5fa 100644
--- a/flake.nix
+++ b/flake.nix
@@ -9,11 +9,12 @@
     system = "x86_64-linux";
     pkgs = import nixpkgs { inherit system; };
 
-    teensy-core = import ./core.nix { inherit pkgs; };
-    teensy-test = import ./test.nix { inherit pkgs teensy-core; };
+    teensy-core  = import ./core.nix { inherit pkgs; };
+    teensy-test  = import ./test.nix { inherit pkgs teensy-core; };
+    teensy-ulisp = import ./ulisp.nix { inherit pkgs teensy-core; };
   in {
     packages.${system} = {
-      inherit teensy-core teensy-test;
+      inherit teensy-core teensy-test teensy-ulisp;
     };
   };
 }
diff --git a/ulisp.nix b/ulisp.nix
new file mode 100644
index 0000000..6fc6e33
--- /dev/null
+++ b/ulisp.nix
@@ -0,0 +1,65 @@
+{ pkgs, teensy-core, ... }:
+
+let
+  # hacky usage of arduino-cli to preprocess ulisp "ino" source into compilable C++ code
+  preprocessed-ulisp-arm = pkgs.stdenv.mkDerivation rec {
+    name = "preprocessed-ulisp-arm.cpp";
+
+    src = pkgs.fetchFromGitHub {
+      owner = "technoblogy";
+      repo = "ulisp-arm";
+      rev = "a25fff3ef1072bdc2733d8064fcf0738579ab7ed";
+      sha256 = "p6H9To9vccHrP46Cv5m+cAFDVPXDCORUWcqOz18c3kg=";
+    };
+
+    outputHashMode = "flat";
+    outputHashAlgo = "sha256";
+    outputHash = "mutVLBFSpTXgUzu594zZ3akR/Z7e9n5SytU6WoQ6rKA=";
+
+    buildInputs = with pkgs; [
+      cacert
+      arduino-cli
+    ];
+
+    buildPhase = ''
+      export HOME=/tmp/arduino
+      arduino-cli core install arduino:samd
+      mv ulisp-arm.ino source.ino
+      arduino-cli compile --fqbn arduino:samd:arduino_zero_native --preprocess > ulisp-arm.cpp
+      echo 'extern "C" int main(void) { setup(); while(true) { loop(); } }' >> ulisp-arm.cpp
+    '';
+
+    installPhase = ''
+      cp ulisp-arm.cpp $out
+    '';
+  };
+
+in pkgs.stdenv.mkDerivation rec {
+  name = "teensy-ulisp";
+
+  buildInputs = with pkgs; [
+    gcc-arm-embedded
+    teensy-core
+  ];
+
+  phases = [ "buildPhase" "installPhase" ];
+
+  buildPhase = ''
+    cp ${./test/Makefile} Makefile
+    cp ${preprocessed-ulisp-arm} ulisp-arm.cpp
+
+    export CC=arm-none-eabi-gcc
+    export CXX=arm-none-eabi-g++
+    export OBJCOPY=arm-none-eabi-objcopy
+    export SIZE=arm-none-eabi-size
+
+    export TEENSY_PATH=${teensy-core}
+
+    make
+  '';
+
+  installPhase = ''
+    mkdir $out
+    cp *.hex $out/
+  '';
+}
-- 
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