Merge pull request #205 from NotAShelf/nim-lang

languages/nim: init

configuration.nix

@@ -68,6 +68,7 @@ inputs: let
         elixir.enable = isMaximal;
         bash.enable = isMaximal;
         terraform.enable = isMaximal;
+        nim.enable = false;
         tailwind.enable = isMaximal;
         clang = {
           enable = isMaximal;

modules/languages/default.nix

@@ -14,6 +14,7 @@ in {
     ./html.nix
     ./java.nix
     ./lua.nix
+    ./nim.nix
     ./nix.nix
     ./php.nix
     ./python.nix

modules/languages/nim.nix

@@ -0,0 +1,115 @@
+{
+  pkgs,
+  config,
+  lib,
+  ...
+}: let
+  inherit (builtins) attrNames;
+  inherit (lib) isList nvim mkEnableOption mkOption types mkIf mkMerge;
+  cfg = config.vim.languages.nim;
+
+  defaultServer = "nimlsp";
+  servers = {
+    nimlsp = {
+      package = pkgs.nimlsp;
+      lspConfig = ''
+        lspconfig.nimls.setup{
+          capabilities = capabilities;
+          on_attach = default_on_attach;
+          cmd = ${
+          if isList cfg.lsp.package
+          then nvim.lua.expToLua cfg.lsp.package
+          else ''
+            {"${cfg.lsp.package}/bin/nimlsp"}
+          ''
+        };
+        }
+      '';
+    };
+  };
+
+  defaultFormat = "nimpretty";
+  formats = {
+    nimpretty = {
+      package = pkgs.nim;
+      nullConfig = ''
+        table.insert(
+          ls_sources,
+          null_ls.builtins.formatting.nimpretty.with({
+            command = "${pkgs.nim}/bin/nimpretty",
+          })
+        )
+      '';
+    };
+  };
+in {
+  options.vim.languages.nim = {
+    enable = mkEnableOption "Nim language support";
+
+    treesitter = {
+      enable = mkOption {
+        description = "Enable Nim treesitter";
+        type = types.bool;
+        default = config.vim.languages.enableTreesitter;
+      };
+      package = nvim.types.mkGrammarOption pkgs "nim";
+    };
+
+    lsp = {
+      enable = mkEnableOption "Nim LSP support" // {default = config.vim.languages.enableLSP;};
+
+      server = mkOption {
+        description = "Nim LSP server to use";
+        type = types.str;
+        default = defaultServer;
+      };
+      package = mkOption {
+        description = "Nim LSP server package, or the command to run as a list of strings";
+        example = ''[lib.getExe pkgs.nimlsp]'';
+        type = with types; either package (listOf str);
+        default = servers.${cfg.lsp.server}.package;
+      };
+    };
+
+    format = {
+      enable = mkEnableOption "Nim formatting" // {default = config.vim.languages.enableFormat;};
+
+      type = mkOption {
+        description = "Nim formatter to use";
+        type = with types; enum (attrNames formats);
+        default = defaultFormat;
+      };
+      package = mkOption {
+        description = "Nim formatter package";
+        type = types.package;
+        default = formats.${cfg.format.type}.package;
+      };
+    };
+  };
+
+  config = mkIf cfg.enable (mkMerge [
+    {
+      assertions = [
+        {
+          assertion = !pkgs.stdenv.isDarwin;
+          message = "Nim language support is only available on Linux";
+        }
+      ];
+    }
+
+    (mkIf cfg.treesitter.enable {
+      vim.treesitter.enable = true;
+      vim.treesitter.grammars = [cfg.treesitter.package];
+    })
+
+    (mkIf cfg.lsp.enable {
+      vim.lsp.lspconfig.enable = true;
+      vim.lsp.lspconfig.sources.nim-lsp = servers.${cfg.lsp.server}.lspConfig;
+    })
+
+    (mkIf cfg.format.enable {
+      vim.lsp.null-ls.enable = true;
+      vim.lsp.null-ls.sources.nim-format = formats.${cfg.format.type}.nullConfig;
+    })
+  ]);
+}