46 lines
1.9 KiB
Lua
46 lines
1.9 KiB
Lua
---@brief
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---
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--- https://github.com/elixir-lsp/elixir-ls
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---
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--- `elixir-ls` can be installed by following the instructions [here](https://github.com/elixir-lsp/elixir-ls#building-and-running).
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---
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--- 1. Download the zip from https://github.com/elixir-lsp/elixir-ls/releases/latest/
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--- 2. Unzip it and make it executable.
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--- ```bash
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--- unzip elixir-ls.zip -d /path/to/elixir-ls
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--- # Unix
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--- chmod +x /path/to/elixir-ls/language_server.sh
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--- ```
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---
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--- **By default, elixir-ls doesn't have a `cmd` set.** This is because nvim-lspconfig does not make assumptions about
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--- your path. You must add the following to your init.vim or init.lua to set `cmd` to the absolute path ($HOME and
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--- ~ are not expanded) of your unzipped elixir-ls.
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---
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--- ```lua
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--- vim.lsp.config('elixirls', {
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--- -- Unix
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--- cmd = { "/path/to/elixir-ls/language_server.sh" };
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--- -- Windows
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--- cmd = { "/path/to/elixir-ls/language_server.bat" };
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--- ...
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--- })
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--- ```
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---
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--- 'root_dir' is chosen like this: if two or more directories containing `mix.exs` were found when searching
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--- directories upward, the second one (higher up) is chosen, with the assumption that it is the root of an umbrella
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--- app. Otherwise the directory containing the single mix.exs that was found is chosen.
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---@type vim.lsp.Config
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return {
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filetypes = { 'elixir', 'eelixir', 'heex', 'surface' },
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root_dir = function(bufnr, on_dir)
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local fname = vim.api.nvim_buf_get_name(bufnr)
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--- Elixir workspaces may have multiple `mix.exs` files, for an "umbrella" layout or monorepo.
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--- So we specify `limit=2` and treat the highest one (if any) as the root of an umbrella app.
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local matches = vim.fs.find({ 'mix.exs' }, { upward = true, limit = 2, path = fname })
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local child_or_root_path, maybe_umbrella_path = unpack(matches)
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local root_dir = vim.fs.dirname(maybe_umbrella_path or child_or_root_path)
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on_dir(root_dir)
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end,
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}
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