git-mob in bash and jq, for nix.

Why

The regular git-mob implementations have the following problems for nix users:

• They modify the global git config and use it as a database. Nix Home Manager, for example, allows you to configure the global git config in nix, but this makes it read-only.
• At least one of them is written for Node. NPM packages are irritating to write derivations for, due to the impure nature of the builds.
• There's no nix derivation written for those implementations AFAIK.

By default you set your team in ~/.git-coauthors. The tool keeps state in ~/.git-mob.

The tool's job is to:

• Write to ~/.gitmessage.txt, which on its own won't work with git commit -m.
• Provide a prepare-commit-msg hook, which enables git commit -m.

You can override file locations using environment variables:

• GIT_MOB_COAUTHORS: the JSON file where you define your team
• GIT_MOB_LIST: the state that this tool keeps
• GIT_MOB_TEMPLATE: the commit template that is written

Installation / usage

• Enable flakes in nix.
• Configure your git to use ~/.gitmessage.txt as its commit.template. In Home Manager, this is:

  programs.git.extraConfig.commit.template = "~/.gitmessage.txt";
  

• Configure your git to use git-mob-prepare-commit-msg as the prepare-commit-msg hook. In Home Manager, this is:

  programs.git.hooks.prepare-commit-msg = "${git-mob}/bin/git-mob-prepare-commit-msg";
  

• Install the packages into your Home Manager
• Run git mob ab bc or git solo to work alone
• Run git mob pick to choose from a terminal dialog!

Alternatively, run directly:

nix run github:code-supply/git-mob ab bc cd

It'll give you an ugly error if you don't have ~/.git-coauthors. Make that file by hand, because I haven't written the bits to do it yet.

See also

• The Node one
• A Rust one
• Another Rust one
• Yet Another Rust one