add language HCL

Terraform doesn't register hcl and doesn't offer good DX if manually set
for editing e.g. nomad HCL files.

Incl. reformat with alejandra

flake.lock

@@ -69,11 +69,11 @@
     },
     "mnw": {
       "locked": {
-				"lastModified": 1722191188,
-				"narHash": "sha256-YF//iMALbrd2Ni9aju7w8NniH16Qz6RFTRD6md5UkDc=",
+        "lastModified": 1724456641,
+        "narHash": "sha256-SMgnviF6ofBPbyV3+rljPGcX0Hn9HBOhgXE10Cyjaic=",
         "owner": "Gerg-L",
         "repo": "mnw",
-				"rev": "c7b289f3f5a31b6e744be37d83fc231816621231",
+        "rev": "c261925dbbf02f523af0e8add844df64fddf0359",
         "type": "github"
       },
       "original": {
@@ -84,7 +84,10 @@
     },
     "naersk": {
       "inputs": {
-				"nixpkgs": ["rnix-lsp", "nixpkgs"]
+        "nixpkgs": [
+          "rnix-lsp",
+          "nixpkgs"
+        ]
       },
       "locked": {
         "lastModified": 1655042882,
@@ -102,8 +105,12 @@
     },
     "nil": {
       "inputs": {
-				"flake-utils": ["flake-utils"],
-				"nixpkgs": ["nixpkgs"],
+        "flake-utils": [
+          "flake-utils"
+        ],
+        "nixpkgs": [
+          "nixpkgs"
+        ],
         "rust-overlay": "rust-overlay"
       },
       "locked": {
@@ -122,11 +129,11 @@
     },
     "nixpkgs": {
       "locked": {
-				"lastModified": 1722141560,
-				"narHash": "sha256-Ul3rIdesWaiW56PS/Ak3UlJdkwBrD4UcagCmXZR9Z7Y=",
+        "lastModified": 1724395761,
+        "narHash": "sha256-zRkDV/nbrnp3Y8oCADf5ETl1sDrdmAW6/bBVJ8EbIdQ=",
         "owner": "nixos",
         "repo": "nixpkgs",
-				"rev": "038fb464fcfa79b4f08131b07f2d8c9a6bcc4160",
+        "rev": "ae815cee91b417be55d43781eb4b73ae1ecc396c",
         "type": "github"
       },
       "original": {
@@ -1932,8 +1939,14 @@
     },
     "rust-overlay": {
       "inputs": {
-				"flake-utils": ["nil", "flake-utils"],
-				"nixpkgs": ["nil", "nixpkgs"]
+        "flake-utils": [
+          "nil",
+          "flake-utils"
+        ],
+        "nixpkgs": [
+          "nil",
+          "nixpkgs"
+        ]
       },
       "locked": {
         "lastModified": 1714529851,

modules/plugins/languages/clang.nix

@@ -57,7 +57,7 @@
       dapConfig = ''
         dap.adapters.lldb = {
           type = 'executable',
-          command = '${cfg.dap.package}/bin/lldb-vscode',
+          command = '${cfg.dap.package}/bin/lldb-dap',
           name = 'lldb'
         }
         dap.configurations.cpp = {

modules/plugins/languages/default.nix

@@ -8,6 +8,7 @@ in {
     ./css.nix
     ./elixir.nix
     ./go.nix
+    ./hcl.nix
     ./html.nix
     ./java.nix
     ./lua.nix

modules/plugins/languages/hcl.nix

@@ -0,0 +1,71 @@
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}: let
+  inherit (lib.options) mkEnableOption mkOption;
+  inherit (lib.modules) mkIf mkMerge;
+  inherit (lib.types) package;
+  inherit (lib.nvim.types) mkGrammarOption;
+
+  cfg = config.vim.languages.hcl;
+in {
+  options.vim.languages.hcl = {
+    enable = mkEnableOption "HCL support";
+
+    treesitter = {
+      enable = mkEnableOption "HCL treesitter" // {default = config.vim.languages.enableTreesitter;};
+      package = mkGrammarOption pkgs "hcl";
+    };
+
+    lsp = {
+      enable = mkEnableOption "HCL LSP support (terraform-ls)" // {default = config.vim.languages.enableLSP;};
+      # TODO: it would be cooler to use vscode-extensions.hashicorp.hcl probably, shouldn't be too hard
+      # TODO: formatter, suppied by above or ...
+      # FIXME: or should we somehow integrate this:
+      #` https://git.mzte.de/nvim-plugins/null-ls.nvim/commit/e1fb7e2b2e4400835e23b9603a19813be119852b ??
+      package = mkOption {
+        description = "HCL ls package (terraform-ls)";
+        type = package;
+        default = pkgs.terraform-ls;
+      };
+    };
+  };
+  config = mkIf cfg.enable (mkMerge [
+    {
+      vim.pluginRC.hcl = ''
+        vim.api.nvim_create_autocmd("FileType", {
+          pattern = "hcl",
+          callback = function(opts)
+            local bo = vim.bo[opts.buf]
+            bo.tabstop = 2
+            bo.shiftwidth = 2
+            bo.softtabstop = 2
+          end
+        })
+
+        local ft = require('Comment.ft')
+        ft
+          .set('hcl', '#%s')
+      '';
+    }
+    (mkIf cfg.treesitter.enable {
+      vim.treesitter.enable = true;
+      vim.treesitter.grammars = [cfg.treesitter.package];
+    })
+
+    (mkIf cfg.lsp.enable {
+      vim.lsp.lspconfig.enable = true;
+      vim.lsp.lspconfig.sources = lib.optionalAttrs (! config.vim.languages.terraform.lsp.enable) {
+        terraform-ls = ''
+          lspconfig.terraformls.setup {
+            capabilities = capabilities,
+            on_attach=default_on_attach,
+            cmd = {"${cfg.lsp.package}/bin/terraform-ls", "serve"},
+          }
+        '';
+      };
+    })
+  ]);
+}

modules/plugins/languages/rust.nix

@@ -173,7 +173,7 @@ in {
             dap = {
               adapter = {
                 type = "executable",
-                command = "${cfg.dap.package}/bin/lldb-vscode",
+                command = "${cfg.dap.package}/bin/lldb-dap",
                 name = "rustacean_lldb",
               },
             },

modules/plugins/theme/supported-themes.nix

@@ -6,7 +6,7 @@
   inherit (lib.trivial) boolToString warnIf;
 in {
   onedark = {
-    setup = {style ? "dark"}: ''
+    setup = {style ? "dark", ...}: ''
       -- OneDark theme
       require('onedark').setup {
         style = "${style}"
@@ -30,7 +30,7 @@ in {
   };
 
   dracula = {
-    setup = {transparent}: ''
+    setup = {transparent, ...}: ''
       require('dracula').setup({
         transparent_bg = ${boolToString transparent},
       });