Relax lower bound dependency for OCaml

bin/spatialblock/main.ml

@@ -18,7 +18,6 @@ let entry_jsoner =
 let config_jsoner = Ezjsonm_encoding.Decoding.list entry_jsoner
 
 let load_config () =
-  let read_file path = In_channel.(with_open_text path input_all) in
   let ( // ) = Filename.concat in
   let config_dir =
     match Sys.getenv_opt "XDG_CONFIG_HOME" with
@@ -28,8 +27,8 @@ let load_config () =
   let config_path = config_dir // "spatial" // "spatialblock.json" in
   if Sys.file_exists config_path then
     let conf =
-      read_file config_path
-      |> Ezjsonm_encoding.Decoding.of_string_exn config_jsoner
+      open_in config_path |> Ezjsonm.from_channel
+      |> Ezjsonm_encoding.Decoding.from_value_exn config_jsoner
     in
     List.iter (fun (entry, icon) -> App_id_map.add app_id_map entry icon) conf
   else ()

dune-project

@@ -18,7 +18,7 @@
  (name spatial-shell)
  (synopsis
   "Implementing a spatial model inspired by Material Shell, for i3 and Sway")
- (depends (ocaml (>= "4.12")) poll (clap (>= "0.3.0")) ezjsonm-encoding conf-scdoc))
+ (depends (ocaml (>= "4.08")) poll (clap (>= "0.3.0")) (ezjsonm-encoding (>= "2.0.0")) conf-scdoc))
 
 (package
  (allow_empty)

lib/sway_ipc/sway_ipc.ml

@@ -31,7 +31,7 @@ let send_command : type a. ?socket:socket -> a Message.t -> a =
   Socket.write_raw_message ~magic_string socket raw;
   let op', payload = Socket.read_raw_message ~magic_string socket in
   assert (op = op');
-  Ezjsonm_encoding.Decoding.of_string_exn (Message.reply_decoder cmd) payload
+  Ezjsonm_encoding.Decoding.from_string_exn (Message.reply_decoder cmd) payload
 
 let subscribe events =
   let socket = connect () in

lib/sway_ipc_types/event.ml

@@ -168,4 +168,4 @@ let decoder (code : event_type) =
 
 let event_of_raw_message (opc, payload) =
   let ev = event_type_of_code opc in
-  Ezjsonm_encoding.Decoding.of_string_exn (decoder ev) payload
+  Ezjsonm_encoding.Decoding.from_string_exn (decoder ev) payload

spatial-shell.opam

@@ -10,10 +10,10 @@ homepage: "https://github.com/lthms/spatial-shell"
 bug-reports: "https://github.com/lthms/spatial-shell/issues"
 depends: [
   "dune" {>= "3.0"}
-  "ocaml" {>= "4.12"}
+  "ocaml" {>= "4.08"}
   "poll"
   "clap" {>= "0.3.0"}
-  "ezjsonm-encoding"
+  "ezjsonm-encoding" {>= "2.0.0"}
   "conf-scdoc"
   "odoc" {with-doc}
 ]