fix: minimum OCaml version

it is now 4.13

Signed-off-by: Rudi Grinberg <[email protected]>

Author: rgrinberg

Makefile

@@ -21,7 +21,7 @@ install-test-deps:
 
 .PHONY: dev
 dev: ## Setup a development environment
-	opam switch create --no-install . ocaml-base-compiler.4.12.0
+	opam switch create --no-install . ocaml-base-compiler.4.13.0
 	opam install -y dune-release merlin ocamlformat utop ocaml-lsp-server
 	opam install --locked --deps-only --with-doc -y .
 	$(MAKE) install-test-deps

README.md

@@ -109,7 +109,7 @@ git clone --recursive [email protected]:ocaml/ocaml-lsp.git
 git submodule update --init --recursive
 
 # create local switch (or use global one) and install dependencies
-opam switch create . ocaml-base-compiler.4.12.0 --with-test
+opam switch create . ocaml-base-compiler.4.13.0 --with-test
 
 # don't forget to set your environment to use the local switch
 eval $(opam env)

dune-project

@@ -55,7 +55,7 @@ possible and does not make any assumptions about IO.
   (result (>= 1.5))
   (ocamlformat-rpc-lib (and (>= 0.18.0) (< 0.20.0)))
   (odoc :with-doc)
-  (ocaml (and (>= 4.12) (< 4.13)))))
+  (ocaml (and (>= 4.13) (< 4.14)))))
 
 (package
  (name jsonrpc)

ocaml-lsp-server.opam

@@ -30,7 +30,7 @@ depends: [
   "result" {>= "1.5"}
   "ocamlformat-rpc-lib" {>= "0.18.0" & < "0.20.0"}
   "odoc" {with-doc}
-  "ocaml" {>= "4.12" & < "4.13"}
+  "ocaml" {>= "4.13" & < "4.14"}
 ]
 dev-repo: "git+https://github.com/ocaml/ocaml-lsp.git"
 build: [