# Setting up kak-lsp to use clojure-lsp

**URL:** <https://discuss.kakoune.com/t/setting-up-kak-lsp-to-use-clojure-lsp/1134>\
**Category:** Help\
**Tags:** plugins, lsp, language\
**Created:** [July 9, 2020, 10:38pm UTC](https://discuss.kakoune.com/t/setting-up-kak-lsp-to-use-clojure-lsp/1134 "2020-07-09T22:38:27Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![jordan-yee](https://discuss.kakoune.com/user_avatar/discuss.kakoune.com/jordan-yee/32/592_2.png) [@jordan-yee](https://discuss.kakoune.com/u/jordan-yee)\
**Post date:** [July 9, 2020, 10:38pm UTC](https://discuss.kakoune.com/t/setting-up-kak-lsp-to-use-clojure-lsp/1134/1 "2020-07-09T22:38:27Z")

</div>

I’m attempting to set up the [clojure-lsp](https://github.com/snoe/clojure-lsp#clients) language server for use with [kak-lsp](https://github.com/ul/kak-lsp#language-servers). I don’t know for sure whether this is even possible, but if it is, it would be great to get it working.

Link to clojure-lsp, the language server for Clojure:

> **[GitHub - snoe/clojure-lsp: Clojure(script) Language Server (LSP) implementation](https://github.com/snoe/clojure-lsp)**
>
> Clojure(script) Language Server (LSP) implementation - GitHub - snoe/clojure-lsp: Clojure(script) Language Server (LSP) implementation

**So far, I’ve successfully managed to set up kak-lsp for c/cpp with clangd, so that much is working.**

I installed kak-lsp via plug.kak as follows (based on [andreyorst’s dotfiles](https://github.com/andreyorst/dotfiles/blob/01a1eb54f9fa266959a71bfe1a7800d91240637f/.config/kak/plugins.kak#L46-L66)):

```
plug "ul/kak-lsp" do %{
  cargo build --release --locked
  cargo install --force --path .
} config %{
  set-option global lsp_diagnostic_line_error_sign "!"
  set-option global lsp_diagnostic_line_warning_sign "?"
  
  hook global WinSetOption filetype=(c|cpp|clojure) %{
      map window user "l" ": enter-user-mode lsp<ret>" -docstring "LSP mode"
      lsp-enable-window
      lsp-auto-hover-enable
      lsp-auto-hover-insert-mode-disable
      set-option window lsp_hover_anchor true
      set-face window DiagnosticError default+u
      set-face window DiagnosticWarning default+u
  }
  
  hook global KakEnd .* lsp-exit
}

```

I copied the default kak-lsp.toml from the plugin install directory into ~/.config/kak-lsp/kak-lsp.toml, and am modifying it there. I’ve tried a few different things, but the relevant config for the Clojure server is currently as follows:

```
[language.clojure]
filetypes = ["clojure"]
roots = ["project.clj", "deps.edn", ".git"]
command = "clojure-lsp"

```

This config is an educated guess. It seems fairly straightforward, but an explicit explanation on what should go on each line could be helpful.

Following the debugging strategy given in [this post](https://discuss.kakoune.com/t/solved-help-needed-setting-texlab-up-latex-language-server-protocol/866/6), I’m receiving the following output, which seems revealing, but I don’t know enough to act on it:

```
Jul 09 16:05:12.657 INFO Starting main event loop, module: kak_lsp::session:29
Jul 09 16:05:27.373 INFO Starting Language server `clojure-lsp `, module: kak_lsp::language_server_trans
port:21
Jul 09 16:05:27.374 ERRO panic: panicked at 'Failed to start language server: Os { code: 8, kind: Other,
message: "Exec format error" }', src/libcore/result.rs:1188:5, module: kak_lsp:252
Jul 09 16:05:27.376 INFO Waiting for Controller to finish..., module: kak_lsp::thread_worker:18
Jul 09 16:05:27.383 INFO ... Controller terminated with err, module: kak_lsp::thread_worker:20
Jul 09 16:05:27.384 ERRO panic: panicked at src/thread_worker.rs:29:17, module: kak_lsp:252
Jul 09 16:05:27.384 INFO Waiting for Messages to editor to finish..., module: kak_lsp::thread_worker:18
Jul 09 16:05:27.385 INFO ... Messages to editor terminated with ok, module: kak_lsp::thread_worker:20

```

Any insight into how I might proceed here, or in regards to configuring non-default language servers in general would be appreciated.

Thanks in advance!

---

<div class="post-metadata">

**Author:** ![Screwtapello](https://discuss.kakoune.com/user_avatar/discuss.kakoune.com/screwtapello/32/12_2.png) [@Screwtapello](https://discuss.kakoune.com/u/Screwtapello)\
**Post date:** [July 9, 2020, 11:46pm UTC](https://discuss.kakoune.com/t/setting-up-kak-lsp-to-use-clojure-lsp/1134/2 "2020-07-09T23:46:45Z")

</div>

This would seem to be the important bit:

```auto
Jul 09 16:05:27.374 ERRO panic: panicked at 'Failed to start language server: Os { code: 8, kind: Other,
message: "Exec format error" }', src/libcore/result.rs:1188:5, module: kak_lsp:252

```

“Exec format error” generally means that the program was found, but the OS kernel couldn’t figure out how to run it. Possible problems include:

- it’s a 32-bit binary, but your OS only includes 64-bit libraries, or vice-versa
- it’s a binary built for a different OS
  - macOS versus FreeBSD or FreeBSD versus Linux, or whatever

- it’s VM code rather than machine-code, and the kernel can’t find the appropriate VM to run it in
  - Python bytecode in a `.pyc` file, or Java classes in a `.jar`, etc.

Specifically, since this is Clojure we’re talking about, I’m guessing the command should be something more like `java -jar /path/to/clojure-lsp.jar` or similar - although I’ve never used Clojure or it’s LSP before, so if the LSP is written in Node or something, then the problem’s probably somewhere else.

---

<div class="post-metadata">

**Author:** ![jordan-yee](https://discuss.kakoune.com/user_avatar/discuss.kakoune.com/jordan-yee/32/592_2.png) [@jordan-yee](https://discuss.kakoune.com/u/jordan-yee)\
**Post date:** [July 10, 2020, 2:18am UTC](https://discuss.kakoune.com/t/setting-up-kak-lsp-to-use-clojure-lsp/1134/3 "2020-07-10T02:18:45Z")

</div>

Thanks for the insight. I looked closer into the clojure-lsp side of things and figured out that I could run the `clojure-lsp` directly, and test it by typing {}\n\n (that’s two presses of the return key), which would spit back a response indicating that it’s working.

Then I after some further digging, I reworked the kak-lsp.toml configuration and got it working:

```
[language.clojure]
filetypes = ["clojure"]
roots = ["project.clj", "deps.edn", ".git"]
command = "sh"
args = ["-c", "/usr/local/bin/clojure-lsp"]

```

However, I should make note of a couple of things.

1. It takes several seconds for the lsp server to start up (don’t know if this is true for all language servers).
2. The file `./.lsp/sqlite.1.db` is automatically created in the project directory.

---

<div class="post-metadata">

**Author:** ![jordan-yee](https://discuss.kakoune.com/user_avatar/discuss.kakoune.com/jordan-yee/32/592_2.png) [@jordan-yee](https://discuss.kakoune.com/u/jordan-yee)\
**Post date:** [July 10, 2020, 11:28pm UTC](https://discuss.kakoune.com/t/setting-up-kak-lsp-to-use-clojure-lsp/1134/4 "2020-07-10T23:28:15Z")

</div>

After further testing, the capabilities provided by clojure-lsp are working well. There are, however, [additional refactorings](https://github.com/snoe/clojure-lsp#refactorings) provided that require additional configuration.

The clojure-clj readme states:

> Calling executeCommand with the following commands and additional args will notify the client with `applyEdit` . All commands expect the first three args to be `[document-uri, line, column]` (eg `["file:///home/snoe/file.clj", 13, 11]` )  
> …  
> Other clients might provide a higher level interface to `workspace/executeCommand` you need to pass the path, line and column numbers.

Further down is an example for Vim:

```
function! Expand(exp) abort
    let l:result = expand(a:exp)
    return l:result ==# '' ? '' : "file://" . l:result
endfunction

nnoremap <silent> crcc :call LanguageClient#workspace_executeCommand('cycle-coll', [Expand('%:p'), line('.') - 1, col('.') - 1])<CR>
nnoremap <silent> crth :call LanguageClient#workspace_executeCommand('thread-first', [Expand('%:p'), line('.') - 1, col('.') - 1])<CR>
...

```

Is there a way to call the executeCommand function for the kak-lsp client?

---

<div class="post-metadata">

**Author:** ![krobelus](https://discuss.kakoune.com/user_avatar/discuss.kakoune.com/krobelus/32/616_2.png) [@krobelus](https://discuss.kakoune.com/u/krobelus)\
**Post date:** [October 30, 2022, 7:37pm UTC](https://discuss.kakoune.com/t/setting-up-kak-lsp-to-use-clojure-lsp/1134/6 "2022-10-30T19:37:38Z")

</div>

> [@jordan-yee](#):
>
> ```auto
> nnoremap <silent> crcc :call LanguageClient#workspace_executeCommand('cycle-coll', [Expand('%:p'), line('.') - 1, col('.') - 1])<CR>
> nnoremap <silent> crth :call LanguageClient#workspace_executeCommand('thread-first', [Expand('%:p'), line('.') - 1, col('.') - 1])<CR>
> ...
> 
> ```
> 
> Is there a way to call the executeCommand function for the kak-lsp client?

the equivalent is something like

```kak
define-command clojure-cycle-coll %{
	evaluate-commands -save-regs lc %{
		evaluate-commands %sh{
			echo set-register l $((kak_cursor_line - 1))
			echo set-register c $((kak_cursor_char_column - 1))
		}
		lsp-execute-command cycle-coll """[\""file://%val{buffile}\"", %reg{l}, %reg{c}]"""
	}
}

```

Note that for this specific command, there is an equivalent code action (`a` mapping in the `lsp` user mode) labeled “Change coll” which requires no configuration 🙂