# local installation

* install emsdk :

git clone https://github.com/emscripten-core/emsdk.git the_emsdk_dir

* change your .zshrc / .bashrc st. it contains a bunch of stuff

export EMSDK_QUIET=1
export CONDA_EMSDK_DIR=/home/src/the_emsdk_dir
export FILE_PACKAGER="$CONDA_EMSDK_DIR/upstream/emscripten/tools/file_packager.py"

(this might not be needed)
source $CONDA_EMSDK_DIR/emsdk_env.sh

* install emscripten with emsdk

emsdk install 3.1.2
emsdk install 3.1.2

* create new env from: https://github.com/emscripten-forge/recipes/blob/main/ci_env.yml

micromamba create -f ci_env.yaml

* install some packages where we need specific branches

python -m pip install git+https://github.com/emscripten-forge/empack@main --no-deps --ignore-installed
python -m pip install git+https://github.com/DerThorsten/boa.git@postcb --no-deps --ignore-installed
python -m pip install git+https://github.com/DerThorsten/bitfurnace.git@emscripten_new --no-deps --ignore-installed

* create / update `.condarc` st. it contains your above created environment

channels:
- /home/runner/micromamba-root/envs/ci-env/conda-bld/
- https://repo.mamba.pm/emscripten-forge
- conda-forge

add_pip_as_python_dependency: false

* clone recipes https://github.com/emscripten-forge/recipes

* build a recipe with the builder script:

python builder.py build explicit recipes/recipes_emscripten/<YOUR_RECIPE> --emscripten-32