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Zsh and Prezto files don't always reside in `~/`. Instead, they have
a more spec compliant location (`${ZDOTDIR:-$HOME}/`). Make them
unambiguous in the documentation. Likewise, for `$GNUPGHOME`.
Further, add instruction for optionally setting up Prezto in
`$XDG_CONFIG_HOME`.
While at this, also add clarification on relative ordering of some of
the modules, apply more formatting tweaks and doc improvements.
107 lines
3.1 KiB
Markdown
107 lines
3.1 KiB
Markdown
# Ruby
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Configures [Ruby][1] local gem installation, loads version managers, and defines
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aliases.
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## Local Gem Installation
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When a Ruby version manager is not detected, local gems are installed in
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_`~/.gems`_; otherwise, they are installed according to the manager.
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## rvm
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An alternative to the above is to use [The Ruby Version Manager (_rvm_)][2],
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which allows for managing multiple, isolated Ruby installations and gem sets in
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the home directory.
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Since RVM is loaded into the shell and is known to override shell commands, it
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may conflict with shell scripts.
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Load this module as late as possible when using RVM since RVM will complain if
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it is not first in `$PATH`.
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## rbenv
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An alternative RVM is to use [_rbenv_][3], which allows for switching between
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multiple, isolated Ruby installations in the home directory.
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While it is not as feature rich as RVM, it is not loaded into the shell and is
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not known to cause conflicts with shell scripts.
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This will be loaded automatically if _rbenv_ is installed to `$RBENV_ROOT`,
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_`~/.rbenv`_, or if the `rbenv` command is on the path.
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## chruby
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Yet another alternative is [_chruby_][4], which is simpler than both _rvm_ and
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_rbenv_.
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### Settings
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#### Auto-Switch
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To enable auto switching the Ruby version on directory change based on the
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`.ruby-version` file, add the following line to _`${ZDOTDIR:-$HOME}/.zpreztorc`_:
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```sh
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zstyle ':prezto:module:ruby:chruby' auto-switch 'yes'
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```
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## Bundler
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Manage gems that are not meant to be used as commands, such as application
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dependencies, with [Bundler][5].
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## Aliases
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### General
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- `rb` is short for `ruby`.
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### Bundler
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- `rbb` manages ruby dependencies (`bundle`).
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- `rbbc` cleans up unused gems in your bundler directory.
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- `rbbe` executes a script in the context of the current bundle.
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- `rbbi` installs the gems specified in the `Gemfile` in `vendor/bundle`.
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- `rbbI` installs the following:
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- gems specified in the `Gemfile` in `vendor/bundle`.
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- packages the gems into `vendor/cache`.
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- appends bundler directories to `.gitignore`.
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- `rbbl` lists all gems in the current bundle.
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- `rbbo` opens an installed gem in the editor.
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- `rbbp` packages gem files into `vendor/cache`.
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- `rbbu` updates gems to their latest version.
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## Functions
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- `ruby-app-root` displays the path to the Ruby application root directory.
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- `ruby-info` exposes information about the Ruby environment via the
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`$ruby_info` associative array.
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## Theming
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To display the name of the current Ruby version in a prompt, define the
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following style in the `prompt_name_setup` function.
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```sh
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# %v - ruby version.
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zstyle ':prezto:module:ruby:info:version' format 'version:%v'
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```
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Then add `$ruby_info[version]` to `$PROMPT` or `$RPROMPT` and call
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`ruby-info` in the `prompt_name_preexec` hook function.
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## Authors
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_The authors of this module should be contacted via the [issue tracker][6]._
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- [Sorin Ionescu](https://github.com/sorin-ionescu)
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[1]: https://www.ruby-lang.org
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[2]: https://rvm.io
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[3]: https://github.com/sstephenson/rbenv
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[4]: https://github.com/postmodern/chruby
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[5]: https://gembundler.com
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[6]: https://github.com/sorin-ionescu/prezto/issues
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