Add shell language support

examples/shell/.test.sh

@@ -0,0 +1,6 @@
+#!/bin/sh
+set -ex
+bash-language-server --version
+bats --version
+shellcheck --version
+shfmt --version

examples/shell/devenv.nix

@@ -0,0 +1,11 @@
+{ pkgs, ... }:
+
+{
+  languages.shell.enable = true;
+  enterShell = ''
+    bash-language-server --version
+    bats --version
+    shellcheck --version
+    shfmt --version
+  '';
+}

examples/shell/devenv.yaml

@@ -0,0 +1,3 @@
+inputs:
+  nixpkgs:
+    url: github:NixOS/nixpkgs/nixpkgs-unstable

examples/supported-languages/devenv.nix

@@ -38,6 +38,7 @@
   languages.ruby.enable = true;
   languages.rust.enable = true;
   languages.scala.enable = true;
+  languages.shell.enable = true;
   languages.swift.enable = true;
   languages.terraform.enable = true;
   languages.texlive.enable = true;

src/modules/languages/shell.nix

@@ -0,0 +1,19 @@
+{ pkgs, config, lib, ... }:
+
+let
+  cfg = config.languages.shell;
+in
+{
+  options.languages.shell = {
+    enable = lib.mkEnableOption "tools for shell development";
+  };
+
+  config = lib.mkIf cfg.enable {
+    packages = with pkgs; [
+      bats
+      nodePackages.bash-language-server
+      shellcheck
+      shfmt
+    ];
+  };
+}