nushell/crates
Yash Thakur f6853fd636
Use XDG_CONFIG_HOME before default config directory (#12118)
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Closes #12103

# Description
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As described in #12103, this PR makes Nushell use `XDG_CONFIG_HOME` as
the config directory if it exists. Otherwise, it uses the old behavior,
which was to use `dirs_next::config_dir()`.

Edit: We discussed choosing between `XDG_CONFIG_HOME` and the default
config directory in Discord and decided against it, at least for now.

<s>@kubouch also suggested letting users choose between
`XDG_CONFIG_HOME` and the default config directory if config files
aren't found on startup and `XDG_CONFIG_HOME` is set to a value
different from the default config directory</s>

On Windows and MacOS, if the `XDG_CONFIG_HOME` variable is set but
`XDG_CONFIG_HOME` is either empty or doesn't exist *and* the old config
directory is non-empty, Nushell will issue a warning on startup saying
that it won't move files from the old config directory to the new one.
To do this, I had to add a `nu_path::config_dir_old()` function. I
assume that at some point, we will remove the warning message and the
function can be removed too. Alternatively, instead of having that
function there, `main.rs` could directly call `dirs_next::config_dir()`.

# User-Facing Changes
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helps us keep track of breaking changes. -->

When `$env.XDG_CONFIG_HOME` is set to an absolute path, Nushell will use
`$"($env.XDG_CONFIG_HOME)/nushell"` as its config directory (previously,
this only worked on Linux).

To use `App Data\Roaming` (Windows) or `Library/Application Support`
(MacOS) instead (the old behavior), one can either leave
`XDG_CONFIG_HOME` unset or set it to an empty string.

If `XDG_CONFIG_HOME` is set, but to a non-absolute/invalid path, Nushell
will report an error on startup and use the default config directory
instead:


![image](https://github.com/nushell/nushell/assets/45539777/a434fe04-b7c8-4e95-b50c-80628008ad08)

On Windows and MacOS, if the `XDG_CONFIG_HOME` variable is set but
`XDG_CONFIG_HOME` is either empty or doesn't exist *and* the old config
directory is non-empty, Nushell will issue a warning on startup saying
that it won't move files from the old config directory to the new one.


![image](https://github.com/nushell/nushell/assets/45539777/1686cc17-4083-4c12-aecf-1d832460ca57)


# Tests + Formatting
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- `cargo run -- -c "use std testing; testing run-tests --path
crates/nu-std"` to run the tests for the standard library

> **Note**
> from `nushell` you can also use the `toolkit` as follows
> ```bash
> use toolkit.nu # or use an `env_change` hook to activate it
automatically
> toolkit check pr
> ```
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The existing config path tests have been modified to use
`XDG_CONFIG_HOME` to change the config directory on all OSes, not just
Linux.

# After Submitting
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documentation](https://github.com/nushell/nushell.github.io) after the
PR is merged, if necessary. This will help us keep the docs up to date.
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The documentation will have to be updated to note that Nushell uses
`XDG_CONFIG_HOME` now. As @fdncred pointed out, it's possible for people
to set `XDG_CONFIG_HOME` to, say, `~/.config/nushell` rather than
`~/.config`, so the documentation could warn about that mistake.
2024-03-11 06:15:46 -05:00
..
nu-cli Canonicalize config dir (#12136) 2024-03-10 11:07:31 +01:00
nu-cmd-base Allow for stacks to have parents (#11654) 2024-03-09 17:55:39 +01:00
nu-cmd-dataframe Debugger experiments (#11441) 2024-03-08 20:21:35 +02:00
nu-cmd-extra Remove feat extra and include in default (#12140) 2024-03-10 17:29:02 +01:00
nu-cmd-lang do command: Make closure support default parameters and type checking (#12056) 2024-03-11 18:11:08 +08:00
nu-color-config Restructure nu-protocol in more meaningful units (#11917) 2024-03-10 18:45:45 +01:00
nu-command Improve error message for into sqlite with empty records (#12149) 2024-03-10 14:14:21 -05:00
nu-engine Keep plugins persistently running in the background (#12064) 2024-03-09 17:10:22 -06:00
nu-explore Debugger experiments (#11441) 2024-03-08 20:21:35 +02:00
nu-glob Bump version to 0.91.1 (#12085) 2024-03-06 23:08:14 +01:00
nu-json remove repetitive word (#12117) 2024-03-08 15:29:20 +08:00
nu-lsp Introduce workspace dependencies (#12043) 2024-03-07 14:40:31 -08:00
nu-parser Restructure nu-protocol in more meaningful units (#11917) 2024-03-10 18:45:45 +01:00
nu-path Use XDG_CONFIG_HOME before default config directory (#12118) 2024-03-11 06:15:46 -05:00
nu-plugin Keep plugins persistently running in the background (#12064) 2024-03-09 17:10:22 -06:00
nu-pretty-hex Introduce workspace dependencies (#12043) 2024-03-07 14:40:31 -08:00
nu-protocol Use XDG_CONFIG_HOME before default config directory (#12118) 2024-03-11 06:15:46 -05:00
nu-std Debugger experiments (#11441) 2024-03-08 20:21:35 +02:00
nu-system Bump windows from 0.52.0 to 0.54.0 (#12037) 2024-03-07 16:36:28 -08:00
nu-table Introduce workspace dependencies (#12043) 2024-03-07 14:40:31 -08:00
nu-term-grid Bump version to 0.91.1 (#12085) 2024-03-06 23:08:14 +01:00
nu-test-support Update tests Playground (#12134) 2024-03-08 20:31:21 -08:00
nu-utils Keep plugins persistently running in the background (#12064) 2024-03-09 17:10:22 -06:00
nu_plugin_custom_values Add support for engine calls from plugins (#12029) 2024-03-09 11:26:30 -06:00
nu_plugin_example Keep plugins persistently running in the background (#12064) 2024-03-09 17:10:22 -06:00
nu_plugin_formats Add support for engine calls from plugins (#12029) 2024-03-09 11:26:30 -06:00
nu_plugin_gstat Add support for engine calls from plugins (#12029) 2024-03-09 11:26:30 -06:00
nu_plugin_inc Add support for engine calls from plugins (#12029) 2024-03-09 11:26:30 -06:00
nu_plugin_python Improve the error message for a plugin version mismatch (#12122) 2024-03-08 06:04:22 -06:00
nu_plugin_query Add support for engine calls from plugins (#12029) 2024-03-09 11:26:30 -06:00
nu_plugin_stream_example Add support for engine calls from plugins (#12029) 2024-03-09 11:26:30 -06:00
README.md Remove old nushell/merge engine-q 2022-02-07 14:54:06 -05:00

Nushell core libraries and plugins

These sub-crates form both the foundation for Nu and a set of plugins which extend Nu with additional functionality.

Foundational libraries are split into two kinds of crates:

  • Core crates - those crates that work together to build the Nushell language engine
  • Support crates - a set of crates that support the engine with additional features like JSON support, ANSI support, and more.

Plugins are likewise also split into two types:

  • Core plugins - plugins that provide part of the default experience of Nu, including access to the system properties, processes, and web-connectivity features.
  • Extra plugins - these plugins run a wide range of different capabilities like working with different file types, charting, viewing binary data, and more.