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Basic config to transform your NVIM in a powerful Clojure IDE using fennel, clojure-lsp and conjure.

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Archiving this project

This project will be archived as the author of Aniseed is making a significant change to how Fennel is used and creating the nfnl project.

A new fennel based configuration based on this is being evaluated to in the future to replace this project.

If you want to test the new setup please check it on cajus-nfnl

cajus-nvim

A curvy and juicy neovim configuration following the "Keep it simple!" design principle.

What is this?

Setup config to transform your NVIM in a powerful Clojure IDE using fennel, clojure-lsp and conjure.

Prerequisites

Things you need installed in your OS to use this setup

How to use

Make sure you backup your current configuration files in $HOME/.config/nvim BEFORE running this.

Run these commands in the root of this repo:

# Delete the current nvim config
rm -rf $HOME/.config/nvim

# Makes a symbolic link to the files in this repo
ln -sf $PWD/.config/nvim $HOME/.config/nvim

When you start nvim for the first time it will download packer and aniseed and show some errors, thats normal press enter to ignore and go to the nvim console pressing : and type PackerInstall. This will install all plugins declared in fnl/config/plugin.fnl, after packer's panel showing all the plugins where installed, close nvim and open it again, no errors should show up this time.

Plugins

  • packer Plugin/package management
  • aniseed Bridges between fennel and nvim
  • conjure Interactive repl based evaluation for nvim
  • telescope Find, Filter, Preview, Pick
  • treesitter Incremental parsing system for highlighting, indentation, or folding
  • nvim-lspconfig Quickstart configurations for the Nvim LSP client
  • nvim-cmp Autocompletion plugin
  • tokyonight-nvim A clean, dark Neovim theme written in Lua
  • tpope-vim-sexp-bundle sexp mappings for regular people
  • lualine neovim statusline plugin written in pure lua
  • luasnip Snippet Engine for Neovim written in Lua.

Using with other languages

Files

Wrapper responsible for two things:

  • Download and setup our package manager (packer.nvim) and our fennel helper/interface (aniseed)
  • Set the entrypoint for NVIM read our config files, in our case fnl/config/init.fnl.
  • Set basic global vim configurations and general keymaps.
  • Load plugin configuration namespace.

In this file among other settings I do set the leader key as space and local-leader as , for the sake of the examples of how use this configuration I will use this as basis for the commands.

Here we define the plugins we want packer to download and load for us, we define here a private function called use which will search in the plugin map for the keyword :mod and load the namespace defined in its value.

For example in the line we define that we need telescope we have this map:

  :nvim-telescope/telescope.nvim {:requires [:nvim-lua/popup.nvim
                                             :nvim-lua/plenary.nvim]
                                  :mod :telescope}

This will state to packer download nvim-telescope/telescope.nvim and all the required plugins in :requires and search for the namespace telescope in file located in the following path fnl/config/plugin/telescope, where I usually add plugin specific configuration like keymaps and settings.

Conjure specifics settings, I like to remap the doc work keymap to be <localleader>K instead the only K, to not conflict with the LSP docs K.

Settings like ignore node_modules and everything in .gitignore to be listed in the file finder. Keymaps:

  • <leader>ff open the find files
  • <leader>fg open the fuzzy finder
  • <leader>fb open the find open buffer
  • <leader>fh open the nvim help fuzzy finder

Settings to select which treesitter's features we want enabled and which language extension we want to ensure they will be always installed.

All about nvim's lsp settings and keymaps.

Settings:

  • In the first session, we define which symbols to show for lsp diagnostics.
  • Later we describe which features and server settings we want to enable/customize.
    • Handler defines features and how we want to render the server outputs.
    • Capabilities we link with our autocompletion plugin (nvim-cmp), to say to the lsp servers that we have this feature enabled.
    • On_Attach we customize our interaction with the LSP server, here we define the following keymaps:
      • gd Go to definition
      • K Show documentations
      • <leader>ld Function declarations
      • <leader>lt Type Definitions
      • <leader>lh Signature Help
      • <leader>ln Rename
      • <leader>le Show line diagnostics
      • <leader>lq Show all diagnostics information
      • <leader>lf Auto format
      • <leader>lj Go to next diagnostic
      • <leader>lk Go to previous diagnostic
      • <leader>la Open code actions menu (Using telescope plugin interface)
      • <leader>la Open code actions menu for the selected text in VISUAL mode (Using telescope plugin interface)
      • <leader>lw Open workspace diagnostics list (Using telescope plugin interface)
      • <leader>lr Show all references list for item under the cursor (Using telescope plugin interface)
      • <leader>lr Show all implementations list for item under the cursor (Using telescope plugin interface)
  • Lastly we configure to use all settings above in clojure-lsp server instance.

Here settings of which sources we want to show up in the autocomple menu like (conjure, lsp, buffer) and some mapping to navigate in the menu.

Theme settings like style and comment style.

Settings for vim-sexp like enabling it for another lisp languages like Fennel and Jannet

Settings for lualine status line like some theme overides and setting what will be shown in the line.

Features

Some gifs showing how it works.

Telescope - Find Files

telescope-find-files <leader>ff

Lsp - Loading

lsp-loading on startup

Lsp - Syntax check

lsp-syntax-check <leader>le

Lsp - Go to definition

lsp-go-to-definition gd

Lsp - Document/Signature Help

lsp-document K/<leader>lh

Lsp - Find definition/references

lsp-find-references <leader>lr

Lsp - Formatting

lsp-format <leader>lf

Lsp - Code actions

lsp-code-actions <leader>la

Lsp - Refactorings

lsp-refactorings <leader>la

Lsp - Rename

lsp-rename <leader>ln

Conjure - Eval

conjure-eval <localleader>er

Conjure - Repl

conjure-repl <localleader>lv

Conjure - Document

conjure-document <localleader>K

Completion

auto-complete

Etymology

Cajus is the Portuguese for cashews, which is a fitting name because the format of its nuts reminded me of a parenthesis.

Contributing

If you find any dead links, misinformation or any improvements in this documents at all Emails, PRs and Issues are highly encouraged.

License

This is free and unencumbered software released into the public domain. For more information, please refer to http://unlicense.org

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Basic config to transform your NVIM in a powerful Clojure IDE using fennel, clojure-lsp and conjure.

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