77 lines
2.5 KiB
Lua
77 lines
2.5 KiB
Lua
local util = require 'lspconfig.util'
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return {
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default_config = {
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cmd = { 'lake', 'serve', '--' },
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filetypes = { 'lean' },
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root_dir = function(fname)
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-- check if inside elan stdlib
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fname = util.path.sanitize(fname)
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local stdlib_dir
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do
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local _, endpos = fname:find '/src/lean'
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if endpos then
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stdlib_dir = fname:sub(1, endpos)
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end
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end
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if not stdlib_dir then
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local _, endpos = fname:find '/lib/lean'
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if endpos then
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stdlib_dir = fname:sub(1, endpos)
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end
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end
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return util.root_pattern('lakefile.lean', 'lean-toolchain', 'leanpkg.toml')(fname)
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or stdlib_dir
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or util.find_git_ancestor(fname)
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end,
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options = {
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-- Only Lake 3.0+ supports lake serve, so for old enough Lean 4,
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-- or core Lean itself, this command (typically using the in-built
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-- Lean 4 language server) will be used instead.
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no_lake_lsp_cmd = { 'lean', '--server' },
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},
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on_new_config = function(config, root_dir)
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local use_lake_serve = false
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if util.path.exists(util.path.join(root_dir, 'lakefile.lean')) then
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local lake_version = ''
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local lake_job = vim.fn.jobstart({ 'lake', '--version' }, {
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on_stdout = function(_, d, _)
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lake_version = table.concat(d, '\n')
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end,
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stdout_buffered = true,
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})
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if lake_job > 0 and vim.fn.jobwait({ lake_job })[1] == 0 then
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local major = lake_version:match 'Lake version (%d).'
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if major and tonumber(major) >= 3 then
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use_lake_serve = true
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end
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end
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end
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if not use_lake_serve then
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config.cmd = config.options.no_lake_lsp_cmd
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end
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-- add root dir as command-line argument for `ps aux`
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table.insert(config.cmd, root_dir)
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end,
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single_file_support = true,
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},
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docs = {
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description = [[
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https://github.com/leanprover/lean4
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Lean installation instructions can be found
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[here](https://leanprover-community.github.io/get_started.html#regular-install).
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The Lean 4 language server is built-in with a Lean 4 install
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(and can be manually run with, e.g., `lean --server`).
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Note: that if you're using [lean.nvim](https://github.com/Julian/lean.nvim),
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that plugin fully handles the setup of the Lean language server,
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and you shouldn't set up `leanls` both with it and `lspconfig`.
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]],
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default_config = {
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root_dir = [[root_pattern("lakefile.lean", "lean-toolchain", "leanpkg.toml", ".git")]],
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},
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},
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}
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