migrated all languages to devshell

modules/dev/sh.nix

@@ -4,17 +4,35 @@
   pkgs,
   ...
 }:
+let
+  packages = builtins.attrValues {
+    inherit (pkgs)
+      bashdb # Debugger and completion support
+      shellcheck # Shell script linter
+      shfmt # Shell parser and formatter
+      ;
+    # LSP for Bash and sh
+    inherit (pkgs.nodePackages) bash-language-server;
+  };
+in
 {
-  options.my.dev.sh.enable = lib.mkEnableOption "enable";
+  options = {
+    my.dev.sh.enable = lib.mkEnableOption "Install shell scripting tools globally";
+    devShells.sh = lib.mkOption {
+      type = lib.types.package;
+      default = pkgs.mkShell {
+        inherit packages;
+        name = "sh-dev-shell";
+        shellHook = ''
+          echo "💻 Shell scripting dev environment"
+        '';
+      };
+      description = "Shell scripting dev shell";
+    };
+  };
   config = lib.mkIf config.my.dev.sh.enable {
-    users.users.jawz.packages = builtins.attrValues {
-      inherit (pkgs)
-        bashdb # autocomplete
-        shellcheck # linting
-        shfmt # a shell parser and formatter
-        ;
-      #LSP
-      inherit (pkgs.nodePackages) bash-language-server;
+    users.users.jawz = {
+      inherit packages;
     };
   };
 }