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feat(rust): comment more thoroughly

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Samuel Cobb 2026-06-05 03:53:23 +01:00
commit ac5827a619
1 changed files with 34 additions and 0 deletions
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34
modules/plugins/lsp/presets/rust-analyzer.nix
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@ -18,6 +18,8 @@ in {
config = mkIf cfg.enable {
# Taken from https://github.com/neovim/nvim-lspconfig/blob/07dff35e7c95288861200b788ef32d6103f107f0/lsp/rust_analyzer.lua
# This code provides utility for cargo workspace functionality, as it is not wired by default.
vim.luaConfigRC.rust-analyzer = entryBefore ["lsp-servers"] ''
local function rust_reload_workspace(bufnr)
local clients = vim.lsp.get_clients { bufnr = bufnr, name = 'rust-analyzer' }
@ -37,6 +39,7 @@ in {
return vim.tbl_get(vim.lsp.config['rust-analyzer'], 'settings', 'rust-analyzer', 'cargo', 'sysrootSrc')
end
-- Determine location of sysroot for stdlib
local function rust_default_sysroot_src()
local sysroot = vim.tbl_get(vim.lsp.config['rust-analyzer'], 'settings', 'rust-analyzer', 'cargo', 'sysroot')
if not sysroot then
@ -60,6 +63,7 @@ in {
return sysroot and vim.fs.joinpath(sysroot, 'lib/rustlib/src/rust/library') or nil
end
-- Determine if a given file belongs to an external library or our own code.
local function rust_is_library(fname)
local user_home = vim.fs.normalize(vim.env.HOME)
local cargo_home = os.getenv 'CARGO_HOME' or user_home .. '/.cargo'
@ -92,6 +96,36 @@ in {
end
'';
# Sends init_params beforehand according to rust-analyzer spec.
before_init = mkLuaInline ''
function(init_params, config)
See https://github.com/rust-lang/rust-analyzer/blob/eb5da56d839ae0a9e9f50774fa3eb78eb0964550/docs/dev/lsp-extensions.md?plain=1#L26
if config.settings and config.settings['rust-analyzer'] then
init_params.initializationOptions = config.settings['rust-analyzer']
end
-- Allow for a single run of a program
vim.lsp.commands['rust-analyzer.runSingle'] = function(command)
local r = command.arguments[1]
local cmd = { 'cargo', unpack(r.args.cargoArgs) }
if r.args.executableArgs and #r.args.executableArgs > 0 then
vim.list_extend(cmd, { '--', unpack(r.args.executableArgs) })
end
local proc = vim.system(cmd, { cwd = r.args.cwd, env = r.args.environment })
local result = proc:wait()
if result.code == 0 then
vim.notify(result.stdout, vim.log.levels.INFO)
else
vim.notify(result.stderr, vim.log.levels.ERROR)
end
end
end
'';
# eval root dir taking workspaces into consideration
root_dir = mkLuaInline ''
function(bufnr, on_dir)
local fname = vim.api.nvim_buf_get_name(bufnr)