Mollusk (fish + xonsh)

The best parts of fish and the best parts of xonsh. I really like xonsh, but fish's autocomplete and suggestion system is way superior to xonsh's. But I also love the fact that xonsh has its whole state as Python objects. So I decided to combine the two.

This code is 100% garbage. It's very hacky, a single python program manages an instance of xonsh and an instance of fish. On pressing [ENTER], fish sends a message to the running mollusk instance over a socket, and mollusk runs that inside of its child xonsh process.

I consider this an improvement on xonsh, but not an improvement on fish at the moment. Once the main bugs are fixed, I'll probably consider it an overall improvement, despite the spawning of a fish shell every time a command is run.

Installation

1. Add the contents of the configuration files in fish_config to your files in ~/.config/fish/. Since configuration files are so complex, there is no way to do this automatically.

2. Put mollusk in /usr/bin/ or somewhere in your path. Make sure that fish can find mollusk wherever it may be.

3. Try it out, see it break.

TODO [bugs] (in order of priorty)

• Multi-line command support
• Robustness against breaking the internal xonsh interpreter
• Fix end of file not terminating shell
• Fix syntax highlighting
• Probably combine mollusk and mollusk-relay

TODO [features] (in order of priorty)

• Have ~/.xonshrc's prompt be the one presented on the fish prompt.
• Ultimately never have to edit any fish configuration files, only xonsh ones

Laments

Sadly I can't change $SHELL to /usr/bin/mollusk. This is because xonsh is what is actually running the commands.