#+TITLE: Nim layer

#+TAGS: general|layer|multi-paradigm|programming

[[file:img/logo.png]]

* Table of Contents                     :TOC_5_gh:noexport:
- [[#description][Description]]
  - [[#features][Features:]]
- [[#install][Install]]
- [[#configuration][Configuration]]
  - [[#choosing-a-backend][Choosing a backend]]
    - [[#company-vim][Company-vim]]
    - [[#lsp][LSP]]
- [[#key-bindings][Key bindings]]

* Description
This layer adds support for the multi-paradigm language =Nim=.

** Features:
- Auto-completion
- Syntax-checking
- Jump to definition.

* Install
To use this configuration layer, add it to your =~/.spacemacs=. You will need to
add =nim= to the existing =dotspacemacs-configuration-layers= list in this
file.

For syntax checking, the =syntax-checking= layer must also be added.

* Configuration
All layer configurations can be done by setting layer variables in your dotfile.
No custom user config lines are necessary

** Choosing a backend
This layer provides two alternative backends to choose from.

*** Company-vim
This is the default choice if nothing is set and no lsp layer
is loaded in your dotfile. This mode only provides very
limited IDE capabilities. Used best if only small scripts
are edited. To set explicitly set the following in your
dotfile:

#+BEGIN_SRC emacs-lisp
  (nim :variables nim-backend 'company-nim)
#+END_SRC

*** LSP
For proper IDE support this backend should be used. It is
based on an external server which will be started automatically
by emacs, once a nim file is opened. The key bindings are
the same for all lsp modes so if you are already familiar with
one you should be able to work the same in all modes.

To set explicitly do the following in your dotfile:

#+BEGIN_SRC emacs-lisp
  (nim :variables
        nim-backend 'lsp)
#+END_SRC

For this to work you will also need to install the
latest version of the lsp server by running:

#+BEGIN_SRC sh
  nimble install nimlsp
#+END_SRC

Should this not work than further instructions can
be obtained from [[https://github.com/PMunch/nimlsp][here]].

NOTE: Key bindings for LSP are defined in the
LSP layer. Also it is advisable to have a look
at the autocomplete layer for an optimal
intellisense config for LSP.

* Key bindings

| Key binding | Description                  |
|-------------+------------------------------|
| ~SPC m c r~ | =nim compile --run main.nim= |
| ~SPC m g b~ | Jump back                    |
| ~SPC m h h~ | Show symbol's documentation  |
|-------------+------------------------------|