Merge pull request #1321 from ppenguin/improve-terraformls

terraform/hcl: improve options; fix terraform-cli error; add tofu-ls

docs/manual/release-notes/rl-0.9.md

@@ -20,6 +20,9 @@
     ];
   }
   ```
+- `languages.{terraform,hcl}`: LSP servers now default to `tofu-ls`. While this
+  is unlikely to cause any noticeable change in behavior or breakage, it's
+  mentioned just in case.
 
 Some other settings and commands are now deprecated but are still supported.
 
@@ -99,6 +102,14 @@
 
 - `toggleterm` open map now also works when in terminal mode
 
+[ppenguin](https://github.com/ppenguin):
+
+- Improved/harmonized for `terraform` and `hcl`:
+  - formatting (use `terraform fmt` or `tofu fmt` for `tf` files)
+  - LSP config
+  - Added `tofu` and `tofu-ls` as (free) alternative to `terrraform` and
+    `terraform-ls`
+
 [jtliang24](https://github.com/jtliang24):
 
 - Updated nix language plugin to use pkgs.nixfmt instead of

modules/plugins/languages/hcl.nix

@@ -8,20 +8,27 @@
   inherit (lib.options) mkEnableOption mkOption literalExpression;
   inherit (lib.meta) getExe;
   inherit (lib.modules) mkIf mkMerge;
-  inherit (lib.types) bool enum listOf;
+  inherit (lib.types) enum listOf;
   inherit (lib.nvim.types) mkGrammarOption deprecatedSingleOrListOf;
   inherit (lib.nvim.attrsets) mapListToAttrs;
 
   cfg = config.vim.languages.hcl;
 
-  defaultServers = ["terraform-ls"];
+  defaultServers = ["tofuls-hcl"];
   servers = {
-    terraform-ls = {
+    terraformls-hcl = {
       enable = true;
       cmd = [(getExe pkgs.terraform-ls) "serve"];
-      filetypes = ["terraform" "terraform-vars"];
+      filetypes = ["hcl"];
+      root_markers = [".git"];
+    };
+    tofuls-hcl = {
+      enable = true;
+      cmd = [(getExe pkgs.tofu-ls) "serve"];
+      filetypes = ["hcl"];
       root_markers = [".terraform" ".git"];
     };
+    # TODO: package nomad-lsp and offer as an option here too
   };
 
   defaultFormat = ["hclfmt"];
@@ -29,6 +36,11 @@
     hclfmt = {
       command = getExe pkgs.hclfmt;
     };
+    nomad-fmt = {
+      command = getExe pkgs.nomad;
+      args = ["fmt" "$FILENAME"];
+      stdin = false;
+    };
   };
 in {
   options.vim.languages.hcl = {
@@ -66,7 +78,7 @@ in {
           defaultText = literalExpression "config.vim.languages.enableFormat";
         };
       type = mkOption {
-        type = deprecatedSingleOrListOf "vim.language.hcl.format.type" (enum (attrNames formats));
+        type = listOf (enum (attrNames formats));
         default = defaultFormat;
         description = "HCL formatter to use";
       };
@@ -97,18 +109,21 @@ in {
         }
       '';
     }
+
     (mkIf cfg.treesitter.enable {
       vim.treesitter.enable = true;
       vim.treesitter.grammars = [cfg.treesitter.package];
     })
 
     (mkIf cfg.lsp.enable {
-      vim.lsp.servers =
+      vim = {
+        lsp.servers =
           mapListToAttrs (n: {
             name = n;
             value = servers.${n};
           })
           cfg.lsp.servers;
+      };
     })
 
     (mkIf cfg.format.enable {

modules/plugins/languages/terraform.nix

@@ -9,23 +9,43 @@
   inherit (lib.modules) mkIf mkMerge;
   inherit (lib.meta) getExe;
   inherit (lib.types) enum listOf;
-  inherit (lib.nvim.types) mkGrammarOption;
+  inherit (lib.nvim.types) mkGrammarOption deprecatedSingleOrListOf;
   inherit (lib.nvim.attrsets) mapListToAttrs;
 
   cfg = config.vim.languages.terraform;
 
-  defaultServers = ["terraformls"];
+  defaultServers = ["tofuls-tf"];
   servers = {
-    terraformls = {
+    terraformls-tf = {
       enable = true;
       cmd = [(getExe pkgs.terraform-ls) "serve"];
-      filetypes = ["terraform" "terraform-vars"];
+      filetypes = ["terraform" "terraform-vars" "tf"];
       root_markers = [".terraform" ".git"];
     };
+    tofuls-tf = {
+      enable = true;
+      cmd = [(getExe pkgs.tofu-ls) "serve"];
+      filetypes = ["terraform" "terraform-vars" "tf"];
+      root_markers = [".terraform" ".git"];
+    };
+  };
+
+  defaultFormat = ["tofu-fmt"];
+  formats = {
+    tofu-fmt = {
+      command = "${getExe pkgs.opentofu}";
+      args = ["fmt" "$FILENAME"];
+      stdin = false;
+    };
+    terraform-fmt = {
+      command = "${getExe pkgs.terraform}";
+      args = ["fmt" "$FILENAME"];
+      stdin = false;
+    };
   };
 in {
   options.vim.languages.terraform = {
-    enable = mkEnableOption "Terraform/HCL support";
+    enable = mkEnableOption "Terraform support";
 
     treesitter = {
       enable =
@@ -44,14 +64,28 @@ in {
           default = config.vim.lsp.enable;
           defaultText = literalExpression "config.vim.lsp.enable";
         };
-
       servers = mkOption {
         type = listOf (enum (attrNames servers));
         default = defaultServers;
         description = "Terraform LSP server to use";
       };
     };
+
+    format = {
+      enable =
+        mkEnableOption "Enable Terraform formatting"
+        // {
+          default = config.vim.languages.enableFormat;
+          defaultText = literalExpression "config.vim.languages.enableFormat";
         };
+      type = mkOption {
+        type = listOf (enum (attrNames formats));
+        default = defaultFormat;
+        description = "Terraform formatter to use";
+      };
+    };
+  };
+
   config = mkIf cfg.enable (mkMerge [
     (mkIf cfg.treesitter.enable {
       vim.treesitter.enable = true;
@@ -59,12 +93,29 @@ in {
     })
 
     (mkIf cfg.lsp.enable {
-      vim.lsp.servers =
+      vim = {
+        lsp.servers =
           mapListToAttrs (n: {
             name = n;
             value = servers.${n};
           })
           cfg.lsp.servers;
+      };
+    })
+
+    (mkIf cfg.format.enable {
+      vim.formatter.conform-nvim = {
+        enable = true;
+        setupOpts = {
+          formatters_by_ft.terraform = cfg.format.type;
+          formatters =
+            mapListToAttrs (name: {
+              inherit name;
+              value = formats.${name};
+            })
+            cfg.format.type;
+        };
+      };
     })
   ]);
 }