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local util = require 'lspconfig.util'
return {
default_config = {
cmd = { 'lake', 'serve', '--' },
filetypes = { 'lean' },
root_dir = function(fname)
-- check if inside elan stdlib
fname = vim.fs.normalize(fname)
local stdlib_dir
do
local _, endpos = fname:find '/src/lean'
if endpos then
stdlib_dir = fname:sub(1, endpos)
end
end
if not stdlib_dir then
local _, endpos = fname:find '/lib/lean'
if endpos then
stdlib_dir = fname:sub(1, endpos)
end
end
return util.root_pattern('lakefile.toml', 'lakefile.lean', 'lean-toolchain')(fname)
or stdlib_dir
or vim.fs.dirname(vim.fs.find('.git', { path = fname, upward = true })[1])
end,
on_new_config = function(config, root_dir)
-- add root dir as command-line argument for `ps aux`
table.insert(config.cmd, root_dir)
end,
single_file_support = true,
},
docs = {
description = [[
https://github.com/leanprover/lean4
Lean installation instructions can be found
[here](https://leanprover-community.github.io/get_started.html#regular-install).
The Lean language server is included in any Lean installation and
does not require any additional packages.
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 `leanls` both with it and `lspconfig`.
]],
},
}
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