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local util = require 'lspconfig.util'
local bin_name = 'lean-language-server'
local args = { '--stdio', '--', '-M', '4096', '-T', '100000' }
local cmd = { bin_name, unpack(args) }
if vim.fn.has 'win32' == 1 then
cmd = { 'cmd.exe', '/C', bin_name, unpack(args) }
end
return {
default_config = {
cmd = cmd,
filetypes = { 'lean3' },
offset_encoding = 'utf-32',
root_dir = function(fname)
fname = util.path.sanitize(fname)
-- check if inside elan stdlib
local stdlib_dir
do
local _, endpos = fname:find '/lean/library'
if endpos then
stdlib_dir = fname:sub(1, endpos)
end
end
return util.root_pattern 'leanpkg.toml'(fname)
or util.root_pattern 'leanpkg.path'(fname)
or stdlib_dir
or util.find_git_ancestor(fname)
end,
single_file_support = true,
},
docs = {
description = [[
https://github.com/leanprover/lean-client-js/tree/master/lean-language-server
Lean installation instructions can be found
[here](https://leanprover-community.github.io/get_started.html#regular-install).
Once Lean is installed, you can install the Lean 3 language server by running
```sh
npm install -g lean-language-server
```
Note: that if you're using [lean.nvim](https://github.com/Julian/lean.nvim),
that plugin fully handles the setup of the Lean language server,
and you shouldn't set up `lean3ls` both with it and `lspconfig`.
]],
default_config = {
root_dir = [[root_pattern("leanpkg.toml") or root_pattern(".git")]],
},
},
}
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