koreader-from-src: advance the build past luajit (the following jpeg dep fails)

pkgs/additional/koreader-from-src/default.nix

@@ -1,5 +1,7 @@
 { lib, stdenv
+, cmake
 , fetchurl
+, git
 , makeWrapper
 , fetchFromGitHub
 , dpkg
@@ -8,21 +10,58 @@
 , gtk3-x11
 , luajit
 , sdcv
-, SDL2 }:
+, SDL2
+, writeText
+}:
 let
   luajit_lua52 = luajit.override { enable52Compat = true; };
+  luajit-stamp = writeText "luajit-stamp" ''
+    # This is a generated file and its contents are an internal implementation detail.
+    # The download step will be re-executed if anything in this file changes.
+    # No other meaning or use of this file is supported.
+
+    method=
+    command=
+    source_dir=
+    work_dir=/build/koreader/base/thirdparty/luajit/build/x86_64-unknown-linux-gnu/git_checkout
+  '';
 in
 stdenv.mkDerivation rec {
   pname = "koreader-from-src";
   version = "2023.06";
-  src = fetchFromGitHub {
+  srcs = [
-    repo = "koreader";
+    (fetchFromGitHub {
-    owner = "koreader";
+      owner = "koreader";
-    rev = "v${version}";
+      repo = "koreader";
-    fetchSubmodules = true;
+      fetchSubmodules = true;
-  };
+      rev = "d350418367ddf39d752d05e0587e562d7d4af2c4";  # master
+      hash = "sha256-ri5ckf21xDKf/X0p2c9wePTa6jh5u0BoUwpVdgpYpZw=";
+      # rev = "v${version}";
+      # hash = "sha256-gdf7AUTpIJ6T4H915YqRG1WzxYHrGmzX6X4dMriWzRA=";
+      name = "koreader";
+    })
+    (fetchFromGitHub {
+      repo = "LuaJIT";
+      owner = "LuaJIT";
+      rev = "8635cbabf3094c4d8bd00578c7d812bea87bb2d3";
+      hash = "sha256-os10rjBacalpDw2TkF/LEFL6xiQJkWCr+yqrY6XgSZo=";
+      # rev = "224129a8e64bfa219d35cd03055bf03952f167f6";
+      # hash = "sha256-ZxGRpUO9NYjC2fL0P24FOxui27xSvN4TA8r9Gukvfn8=";
+      name = "thirdparty-luajit";
+      leaveDotGit = true;
+      deepClone = true;
+    })
+  ];
 
-  nativeBuildInputs = [ makeWrapper dpkg ];
+  sourceRoot = "koreader";
+
+  nativeBuildInputs = [
+    cmake
+    dpkg
+    git
+    makeWrapper
+    # luajit_lua52.pkgs.luarocks
+  ];
   buildInputs = [
     glib
     gnutar
@@ -32,8 +71,42 @@ stdenv.mkDerivation rec {
     SDL2
   ];
 
+  dontConfigure = true;
   buildPhase = ''
-    make TARGET=debian DEBIAN=1 INSTALL_DIR="$out"
+    for l in $(ls .. | grep thirdparty- | sed 's/thirdparty-//')
+    do
+      deref=$(realpath "../thirdparty-$l")
+      # deref="$PWD/../thirdparty-$l"
+
+      # link the nix clone into the directory koreader would use for checkout
+      # ref="base/thirdparty/$l/build/git_checkout"
+      # echo "linking thirdparty library $l $ref -> $deref"
+      # mkdir -p "$ref"
+      # ln -s "$deref" "$ref/$l"
+      # mv "$deref" "$ref/$l"
+      # cp -R "$deref" "$ref/$l"
+      # needs to be writable for koreader to checkout it specific revision
+      # chmod u+w -R "$ref/$l/.git"
+
+      # koreader would copy the checkout into this build/working directory,
+      # but because we spoof the stamps to work around other git errors,
+      # copy it there on koreader's behalf
+      prefix="base/thirdparty/$l/build/x86_64-unknown-linux-gnu/$l-prefix"
+      mkdir -p "$prefix/src"
+      cp -R "$deref" "$prefix/src/$l"
+      # src dir needs to be writable for koreader to apply its own patches
+      chmod u+w -R "$prefix/src/$l"
+    done
+
+    # TODO: move this into the above loop, but we need to be able to read the commit dynamically
+    echo "copying ${luajit-stamp}"
+    mkdir -p "base/thirdparty/luajit/build/x86_64-unknown-linux-gnu/git_checkout/stamp"
+    cp "${luajit-stamp}" "base/thirdparty/luajit/build/x86_64-unknown-linux-gnu/git_checkout/stamp/luajit-gitinfo-8635cbabf3094c4d8bd00578c7d812bea87bb2d3.txt"
+    cp "${luajit-stamp}" "base/thirdparty/luajit/build/x86_64-unknown-linux-gnu/git_checkout/stamp/luajit-gitclone-lastrun.txt"
+    # koreader-base decides whether to redo the git checkout based on a timestamp compare of these two stamp files
+    touch -d "next week" "base/thirdparty/luajit/build/x86_64-unknown-linux-gnu/git_checkout/stamp/luajit-gitclone-lastrun.txt"
+
+    make TARGET=debian DEBIAN=1 INSTALL_DIR="$out" SHELL=sh VERBOSE=1
   '';
 
   installPhase = ''