From c1b6628425a87a7466c09afbd5f6c90217aa9ab0 Mon Sep 17 00:00:00 2001
From: jD91mZM2 <me@krake.one>
Date: Fri, 22 Jan 2021 17:29:51 +0100
Subject: Add rnix-lsp for Nix diagnostics and completion

---
 ale_linters/nix/rnix_lsp.vim              | 16 ++++++++++++++++
 doc/ale-supported-languages-and-tools.txt |  1 +
 supported-tools.md                        |  1 +
 test/nix/test.nix                         |  0
 test/nix/test_rnix_lsp.vader              | 14 ++++++++++++++
 5 files changed, 32 insertions(+)
 create mode 100644 ale_linters/nix/rnix_lsp.vim
 create mode 100644 test/nix/test.nix
 create mode 100644 test/nix/test_rnix_lsp.vader

diff --git a/ale_linters/nix/rnix_lsp.vim b/ale_linters/nix/rnix_lsp.vim
new file mode 100644
index 00000000..949bed1c
--- /dev/null
+++ b/ale_linters/nix/rnix_lsp.vim
@@ -0,0 +1,16 @@
+" Author: jD91mZM2 <me@krake.one>
+" Description: rnix-lsp language client
+
+function! ale_linters#nix#rnix_lsp#GetProjectRoot(buffer) abort
+    " rnix-lsp does not yet use the project root, so getting it right is not
+    " important
+    return fnamemodify(a:buffer, ':h')
+endfunction
+
+call ale#linter#Define('nix', {
+\   'name': 'rnix_lsp',
+\   'lsp': 'stdio',
+\   'executable': 'rnix-lsp',
+\   'command': '%e',
+\   'project_root': function('ale_linters#nix#rnix_lsp#GetProjectRoot'),
+\})
diff --git a/doc/ale-supported-languages-and-tools.txt b/doc/ale-supported-languages-and-tools.txt
index 239927be..2a3fe137 100644
--- a/doc/ale-supported-languages-and-tools.txt
+++ b/doc/ale-supported-languages-and-tools.txt
@@ -304,6 +304,7 @@ Notes:
 * nix
   * `nix-instantiate`
   * `nixpkgs-fmt`
+  * `rnix-lsp`
 * nroff
   * `alex`!!
   * `proselint`
diff --git a/supported-tools.md b/supported-tools.md
index ff4a78d8..6994a337 100644
--- a/supported-tools.md
+++ b/supported-tools.md
@@ -313,6 +313,7 @@ formatting.
 * nix
   * [nix-instantiate](http://nixos.org/nix/manual/#sec-nix-instantiate)
   * [nixpkgs-fmt](https://github.com/nix-community/nixpkgs-fmt)
+  * [rnix-lsp](https://github.com/nix-community/rnix-lsp)
 * nroff
   * [alex](https://github.com/wooorm/alex) :floppy_disk:
   * [proselint](http://proselint.com/)
diff --git a/test/nix/test.nix b/test/nix/test.nix
new file mode 100644
index 00000000..e69de29b
diff --git a/test/nix/test_rnix_lsp.vader b/test/nix/test_rnix_lsp.vader
new file mode 100644
index 00000000..bf62616b
--- /dev/null
+++ b/test/nix/test_rnix_lsp.vader
@@ -0,0 +1,14 @@
+" Author: jD91mZM2 <me@krake.one>
+" Description: Tests for rnix-lsp language client
+
+Before:
+  call ale#assert#SetUpLinterTest('nix', 'rnix_lsp')
+
+After:
+  call ale#assert#TearDownLinterTest()
+
+Execute(should start rnix-lsp):
+  call ale#test#SetFilename('./test.nix')
+  AssertLSPLanguage 'nix'
+  AssertLSPOptions {}
+  AssertLSPProject ale#path#Simplify('.')
-- 
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