Add ocamllsp dev tool

Adds metadata about ocamllsp and generalizes the dev-tool fetching
code to support all dev tools rather than specifically ocamlformat.

Signed-off-by: Stephen Sherratt <stephen@sherra.tt>

src/dune_pkg/dev_tool.ml

@@ -3,40 +3,47 @@ open! Import
 type t =
   | Ocamlformat
   | Odoc
+  | Ocamllsp
 
-let all = [ Ocamlformat; Odoc ]
+let all = [ Ocamlformat; Odoc; Ocamllsp ]
 
 let equal a b =
   match a, b with
   | Ocamlformat, Ocamlformat -> true
   | Odoc, Odoc -> true
+  | Ocamllsp, Ocamllsp -> true
   | _ -> false
 ;;
 
 let package_name = function
   | Ocamlformat -> Package_name.of_string "ocamlformat"
   | Odoc -> Package_name.of_string "odoc"
+  | Ocamllsp -> Package_name.of_string "ocaml-lsp-server"
 ;;
 
 let of_package_name package_name =
   match Package_name.to_string package_name with
   | "ocamlformat" -> Ocamlformat
   | "odoc" -> Odoc
+  | "ocaml-lsp-server" -> Ocamllsp
   | other -> User_error.raise [ Pp.textf "No such dev tool: %s" other ]
 ;;
 
 let exe_name = function
   | Ocamlformat -> "ocamlformat"
   | Odoc -> "odoc"
+  | Ocamllsp -> "ocamllsp"
 ;;
 
 let exe_path_components_within_package t =
   match t with
   | Ocamlformat -> [ "bin"; exe_name t ]
   | Odoc -> [ "bin"; exe_name t ]
+  | Ocamllsp -> [ "bin"; exe_name t ]
 ;;
 
 let needs_to_build_with_same_compiler_as_project = function
   | Ocamlformat -> false
   | Odoc -> true
+  | Ocamllsp -> true
 ;;

src/dune_pkg/dev_tool.mli

@@ -3,6 +3,7 @@ open! Import
 type t =
   | Ocamlformat
   | Odoc
+  | Ocamllsp
 
 val all : t list
 val equal : t -> t -> bool