koreader-from-src: cleanup (remove unused "machineAgnostic" and "package" third-party dependency options)

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

@@ -88,6 +88,7 @@ let
     rev = "v${version}";
     hash = "sha256-/51pOGSAoaS0gOKlqNKruwaKY5qylzCpeNUrWyzYTpA=";
   };
+
   nanosvg-headers-ko = symlinkJoin {
     # koreader's heavily-patched mupdf is dependent on a koreader-specific `stb_image_write` extension to nanosvg.
     # nanosvg is used as a header-only library, so just patch that extension straight into the src.
@@ -97,6 +98,7 @@ let
       "${src}/base/thirdparty/nanosvg"
     ];
   };
+
   # XXX: for some inscrutable reason, `enable52Compat` is *partially* broken, only when cross compiling.
   # `table.unpack` is non-nil, but `table.pack` is nil.
   # the normal path is for `enable52Compat` to set `env.NIX_CFLAGS_COMPILE = "-DLUAJIT_ENABLE_LUA52COMPAT";`
@@ -108,6 +110,7 @@ let
       "${src}/base/thirdparty/luajit/koreader-luajit-enable-table_pack.patch"
     ];
   });
+
   overlayedLuaPkgs = luaPkgs: let
     ps = with ps; {
       luajson = buildLuarocksPackage rec {
@@ -159,6 +162,7 @@ let
       };
     } // luaPkgs;
   in ps;
+
   luaEnv = luajit52.withPackages (ps: with (overlayedLuaPkgs ps); [
     luajson
     htmlparser
@@ -168,10 +172,12 @@ let
     luasocket
     rapidjson
   ]);
+
   rockspecFor = luaPkgName: let
     pkg = (overlayedLuaPkgs luaEnv.pkgs)."${luaPkgName}";
   in
     "${luaEnv}/${pkg.rocksSubdir}/${luaPkgName}/${pkg.rockspecVersion}/${luaPkgName}-${pkg.rockspecVersion}.rockspec";
+
   crossTargets = {
     # koreader-base Makefile targets to use when compiling for the given host platform
     # only used when cross compiling
@@ -182,24 +188,6 @@ let
   else
     crossTargets."${stdenv.hostPlatform.parsed.cpu.name}";
 
-  fakeBuildDep = buildPackages.writeShellScript "fake-build-ko-dep" ''
-    set -x
-    lib="$1"
-    build_dir="$2"
-    prebuilt="$3"
-    mkdir -p "$build_dir/$lib-prefix/src"
-    rm -rf "$build_dir/$lib-prefix/src/$lib"
-    rm -rf "$build_dir/$lib-prefix/src/$lib-build"
-    # the library build directory koreader uses isn't consistently named, but we can cover most cases ($lib or $lib-build).
-    # we have to copy the full tree rather than just symlink because koreader/base/Makefile.third
-    # is copying lib/*.so into include/.
-    # seriously, wtf are they doing over there.
-    cp -R "$prebuilt" "$build_dir/$lib-prefix/src/$lib"
-    cp -R "$prebuilt" "$build_dir/$lib-prefix/src/$lib-build"
-    # ln -s "$prebuilt" "$build_dir/$lib-prefix/src/$lib"
-    # ln -s "$prebuilt" "$build_dir/$lib-prefix/src/$lib-build"
-  '';
-
   getContrib = pkg: stdenv.mkDerivation {
     inherit (pkg) name src;
     dontConfigure = true;
@@ -310,7 +298,6 @@ let
     ZSTD_DIR="${lib.getDev zstd}" \
     ZSTD_DESTDIR="${lib.getDev zstd}" \
   '';
-  # LUAROCKS_BINARY="${lib.optionalString (!stdenv.buildPlatform.canExecute stdenv.hostPlatform) (stdenv.hostPlatform.emulator buildPackages)} ${luajit52}/bin/lua ${luaEnv.pkgs.luarocks}/bin/.luarocks-wrapped" \
 
   # DO_STRIP=0 else it'll try to strip our externally built libraries, and error because those live in the nix store.
   makeFlags = ''
@@ -420,12 +407,10 @@ stdenv.mkDerivation rec {
     link_lib_into_build_dir() {
       lib="$1"
       rev="$2"
-      platform="$3"
-      prebuilt="$4"
 
       lib_src="../$lib"
       cmake_lists="base/thirdparty/$lib/CMakeLists.txt"
-      build_dir="base/thirdparty/$lib/build/$platform"
+      build_dir="base/thirdparty/$lib/build/${stdenv.hostPlatform.config}"
 
       # link the nix clone into the directory koreader would use for checkout
       # ref="base/thirdparty/$l/build/git_checkout"
@@ -462,25 +447,12 @@ stdenv.mkDerivation rec {
       cp -R "$lib_src" "$prefix/src/$lib"
       # src dir needs to be writable for koreader to apply its own patches
       chmod u+w -R "$prefix/src/$lib"
-
-      if [ -n "$prebuilt" ]; then
-        abs_build_dir="$(realpath "$build_dir")"
-        sed -i 's/INSTALL_COMMAND .*/INSTALL_COMMAND ""/' "$cmake_lists"
-        sed -i \
-          "s:BUILD_COMMAND .*:BUILD_COMMAND ${fakeBuildDep} $lib $abs_build_dir $prebuilt:" \
-          "$cmake_lists"
-      fi
     }
 
-    ${builtins.concatStringsSep "\n" (lib.mapAttrsToList
-      (name: src:
-        let
-          # for machine-agnostic libraries (e.g. pure lua), koreader doesn't build them in a flavored directory
-          machine = if src.machineAgnostic or false then "" else stdenv.hostPlatform.config;
-        in
-          ''link_lib_into_build_dir "${name}" "${src.source.rev}" "${machine}" "${src.package or ""}"''
-      )
-      sources.thirdparty
+    ${builtins.concatStringsSep "\n" (
+      lib.mapAttrsToList
+        (name: src: lib.escapeShellArgs [ "link_lib_into_build_dir" name src.source.rev ])
+        sources.thirdparty
     )}
 
     # outDir should match OUTPUT_DIR in koreader-base