On regular plugin installation, helm triggers post-install hook
that downloads prebuilt versioned release of the plugin binary and installs it.
To disable this behavior, you need to pass HELM_S3_PLUGIN_NO_INSTALL_HOOK=true
to the installer:
$ HELM_S3_PLUGIN_NO_INSTALL_HOOK=true helm plugin install https://github.com/hypnoglow/helm-s3.git
Development mode: not downloading versioned release.
Installed plugin: s3
Next, you may want to ensure if you have all prerequisites to build the plugin from source:
cd ~/.helm/plugins/helm-s3
make dep build
If you see no messages - build was successful. Try to run some helm commands that involve the plugin, or jump straight into plugin development.