feat: enable custom rust settings

Author: DieracDelta

flake.lock

@@ -6,5 +6,22 @@ require("lze").load({
     require("haskell-tools")
     require("telescope").load_extension("ht")
     vim.cmd("doautocmd FileType haskell")
+    local ht = require("haskell-tools")
+    local bufnr = vim.api.nvim_get_current_buf()
+    local opts = { noremap = true, silent = true, buffer = bufnr }
+    -- haskell-language-server relies heavily on codeLenses,
+    -- so auto-refresh (see advanced configuration) is enabled by default
+    vim.keymap.set("n", "<space>cl", vim.lsp.codelens.run, opts)
+    -- Hoogle search for the type signature of the definition under the cursor
+    vim.keymap.set("n", "<space>hs", ht.hoogle.hoogle_signature, opts)
+    -- Evaluate all code snippets
+    vim.keymap.set("n", "<space>ea", ht.lsp.buf_eval_all, opts)
+    -- Toggle a GHCi repl for the current package
+    vim.keymap.set("n", "<leader>rr", ht.repl.toggle, opts)
+    -- Toggle a GHCi repl for the current buffer
+    vim.keymap.set("n", "<leader>rf", function()
+      ht.repl.toggle(vim.api.nvim_buf_get_name(0))
+    end, opts)
+    vim.keymap.set("n", "<leader>rq", ht.repl.quit, opts)
   end,
 })

lazy_lua_modules/haskell-tools-nvim.lua

@@ -7,8 +7,30 @@ require("lze").load({
     --   filetypes = { "rust" },
     --   root_markers = { ".git", "Cargo.lock" },
     -- }
+    local root = vim.fn.getcwd()
+    local git_root = vim.fn.systemlist("git rev-parse --show-toplevel")[1]
+    if vim.v.shell_error == 0 and git_root and #git_root > 0 then
+      root = git_root
+    end
+
+    -- load per-project nvim_config.lua if it exists
+    local config_path = root .. "/nvim_config.lua"
+    local project_settings = nil
+
+    if vim.fn.filereadable(config_path) == 1 then
+      local ok, cfg = pcall(dofile, config_path)
+      if ok and type(cfg) == "table" then
+        project_settings = cfg
+      else
+        vim.notify("Failed to load project nvim_config.lua", vim.log.levels.WARN)
+      end
+    end
+
     vim.g.rustaceanvim = {
       client = { server_capabilities = { inlayHintProvider = true } },
+      server = {
+        settings = project_settings or {},
+      },
       tools = {
         autoSetHints = true,
         runnables = { use_telescope = true },

lazy_lua_modules/rustaceanvim.lua

@@ -140,7 +140,7 @@ local capabilities = vim.lsp.protocol.make_client_capabilities()
 capabilities.textDocument.completion.completionItem.snippetSupport = true
 
 require("lspconfig").jsonls.setup({
-  cmd = { "vscode-json-languageserver", "--stdio" },
+  cmd = { "vscode-json-language-server", "--stdio" },
   capabilities = capabilities,
 })
 
@@ -290,6 +290,7 @@ require("conform").setup({
     typst = { "prettypst" },
     html = { "prettierd" },
     ocaml = { "ocamlformat" },
+    haskell = { "fourmolu" },
   },
   -- Command to toggle format-on-save
   -- https://github.com/stevearc/conform.nvim/blob/master/doc/recipes.md#command-to-toggle-format-on-save