Merge branch 'main' into fix/prevent-lsp-formatting-ts-node

modules/plugins/languages/default.nix

@@ -14,6 +14,7 @@ in {
     ./hcl.nix
     ./kotlin.nix
     ./html.nix
+    ./haskell.nix
     ./java.nix
     ./lua.nix
     ./markdown.nix

modules/plugins/languages/haskell.nix

@@ -0,0 +1,104 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}: let
+  inherit (builtins) isList;
+  inherit (lib.types) either package listOf str;
+  inherit (lib.options) mkEnableOption mkOption;
+  inherit (lib.strings) optionalString;
+  inherit (lib.modules) mkIf mkMerge;
+  inherit (lib.nvim.types) mkGrammarOption;
+  inherit (lib.nvim.dag) entryAfter;
+  inherit (lib.nvim.lua) expToLua;
+  inherit (pkgs) haskellPackages;
+
+  cfg = config.vim.languages.haskell;
+in {
+  options.vim.languages.haskell = {
+    enable = mkEnableOption "Haskell support";
+
+    treesitter = {
+      enable = mkEnableOption "Treesitter support for Haskell" // {default = config.vim.languages.enableTreesitter;};
+      package = mkGrammarOption pkgs "haskell";
+    };
+
+    lsp = {
+      enable = mkEnableOption "LSP support for Haskell" // {default = config.vim.languages.enableLSP;};
+      package = mkOption {
+        description = "Haskell LSP package or command to run the Haskell LSP";
+        example = ''[ (lib.getExe pkgs.haskellPackages.haskell-language-server) "--debug" ]'';
+        default = haskellPackages.haskell-language-server;
+        type = either package (listOf str);
+      };
+    };
+
+    dap = {
+      enable = mkEnableOption "DAP support for Haskell" // {default = config.vim.languages.enableDAP;};
+      package = mkOption {
+        description = "Haskell DAP package or command to run the Haskell DAP";
+        default = haskellPackages.haskell-debug-adapter;
+        type = either package (listOf str);
+      };
+    };
+  };
+
+  config = mkIf cfg.enable (mkMerge [
+    (mkIf cfg.treesitter.enable {
+      vim.treesitter = {
+        enable = true;
+        grammars = [cfg.treesitter.package];
+      };
+    })
+
+    (mkIf (cfg.dap.enable || cfg.lsp.enable) {
+      vim = {
+        startPlugins = ["haskell-tools-nvim"];
+        luaConfigRC.haskell-tools-nvim =
+          entryAfter
+          ["lsp-setup"]
+          ''
+            vim.g.haskell_tools = {
+            ${optionalString cfg.lsp.enable ''
+              -- LSP
+              tools = {
+                hover = {
+                  enable = true,
+                },
+              },
+              hls = {
+                cmd = ${
+                if isList cfg.lsp.package
+                then expToLua cfg.lsp.package
+                else ''{"${cfg.lsp.package}/bin/haskell-language-server-wrapper"}''
+              },
+                on_attach = function(client, bufnr, ht)
+                  default_on_attach(client, bufnr, ht)
+                  local opts = { noremap = true, silent = true, buffer = bufnr }
+                  vim.keymap.set('n', '<localleader>cl', vim.lsp.codelens.run, opts)
+                  vim.keymap.set('n', '<localleader>hs', ht.hoogle.hoogle_signature, opts)
+                  vim.keymap.set('n', '<localleader>ea', ht.lsp.buf_eval_all, opts)
+                  vim.keymap.set('n', '<localleader>rr', ht.repl.toggle, opts)
+                  vim.keymap.set('n', '<localleader>rf', function()
+                    ht.repl.toggle(vim.api.nvim_buf_get_name(0))
+                  end, opts)
+                  vim.keymap.set('n', '<localleader>rq', ht.repl.quit, opts)
+                end,
+              },
+            ''}
+            ${optionalString cfg.dap.enable ''
+              dap = {
+                cmd = ${
+                if isList cfg.dap.package
+                then expToLua cfg.dap.package
+                else ''${cfg.dap.package}/bin/haskell-debug-adapter''
+              },
+              },
+            ''}
+            }
+          '';
+      };
+    })
+  ]);
+}

modules/plugins/languages/rust.nix

@@ -13,7 +13,7 @@
   inherit (lib.types) bool package str listOf either enum;
   inherit (lib.nvim.types) mkGrammarOption;
   inherit (lib.nvim.lua) expToLua;
-  inherit (lib.nvim.dag) entryAnywhere;
+  inherit (lib.nvim.dag) entryAfter entryAnywhere;
 
   cfg = config.vim.languages.rust;
 
@@ -127,7 +127,7 @@ in {
       vim = {
         startPlugins = ["rustaceanvim"];
 
-        luaConfigRC.rustaceanvim = entryAnywhere ''
+        pluginRC.rustaceanvim = entryAfter ["lsp-setup"] ''
           vim.g.rustaceanvim = {
           ${optionalString cfg.lsp.enable ''
             -- LSP

modules/wrapper/rc/options.nix

@@ -126,16 +126,14 @@ in {
 
       example = {"some_variable" = 42;};
       description = ''
-        An attribute set containing global variable values
-        for storing vim variables as early as possible. If
-        populated, this option will set vim variables in the
-        built luaConfigRC as the first item.
+        A freeform attribute set containing global variable values for setting vim
+        variables as early as possible. If populated, this option will set vim variables
+        in the built {option}`luaConfigRC` as the first item.
 
         ::: {.note}
-        `{foo = "bar";}` will set `vim.g.foo` to "bar", where
-        the type of `bar` in the resulting Lua value will be
-        inferred from the type of the value in the `{name = value;}`
-        pair passed to the option.
+        `{foo = "bar";}` will set `vim.g.foo` to "bar", where the type of `bar` in the
+        resulting Lua value will be inferred from the type of the value in the
+        `{name = value;}` pair passed to the option.
         :::
       '';
     };
@@ -212,21 +210,39 @@ in {
             default = true;
             description = "Enable word wrapping.";
           };
+
+          tabstop = mkOption {
+            type = int;
+            default = 8; # Neovim default
+            description = ''
+              Number of spaces that a `<Tab>` in the file counts for. Also see
+              the {command}`:retab` command, and the {option}`softtabstop` option.
+            '';
+          };
+
+          shiftwidth = mkOption {
+            type = int;
+            default = 8; # Neovim default
+            description = ''
+              Number of spaces to use for each step of (auto)indent. Used for
+              {option}`cindent`, `>>`, `<<`, etc.
+
+              When zero the {option}`tabstop` value will be used.
+            '';
+          };
         };
       };
 
       example = {visualbell = true;};
       description = ''
-        An attribute set containing vim options to be set
-        as early as possible. If populated, this option will
-        set vim options in the built luaConfigRC after `basic`
-        and before `pluginConfigs` DAG entries.
+        A freeform attribute set containing vim options to be set as early as possible.
+        If populated, this option will set vim options in the built {option}`luaConfigRC`
+        after `basic` and before `pluginConfigs` DAG entries.
 
         ::: {.note}
-        `{foo = "bar";}` will set `vim.o.foo` to "bar", where
-        the type of `bar` in the resulting Lua value will be
-        inferred from the type of the value in the`{name = value;}`
-        pair passed to the option.
+        `{foo = "bar";}` will set `vim.o.foo` to "bar", where the type of `bar` in the
+        resulting Lua value will be inferred from the type of the value in the
+        `{name = value;}` pair passed to the option.
         :::
       '';
     };