Get a nix-shell, and the first time do make setup. If you don't use nixpkgs,
could try to install the dependencies manually. But nix gives a more hermetic
build env, at least for the non-haxelib deps. (Might do a build docker
eventually?)
Then there are various targets:
make compile will build a hashlink-VM bytecode, which you can execute with hashlink using hl out/Main.hl.
Or, on non-nixOS, can try nixGL hl out/Main.hl. Practically:
nix run --impure github:guibou/nixGL -- hl out/Main.hl
make compile-js will compile via hashlink's JS output. Run it with opening out/index.html in the browser (see the JS console for trace output).
Note: for now only JS has interactive components for editing code.
make compile-hl-c will generate hashlink-native C code.
Random pointers about some experimentation:
Stick to haxe 4.2.[1,3] since 4.2.[4,5] is allegedly buggy (see hlc-compiler's repo about it). See the Makefile's compile-hl-c, the instructions should give you a working binary. Some manual patchelf for nixos is needed for now.
You should compile that with Android NDK (code guide to come eventually). See https://github.com/HaxeFoundation/hashlink/wiki/Android, https://github.com/fal-works/hlc-compiler-sample.
Use the haxe compile server:
haxe --server-listen 127.0.0.1:1222
then
haxe --connect 127.0.0.1:1222 build-js.hxml