erlang-ls: use rebar3Relx

pkgs/development/beam-modules/erlang-ls/default.nix

@@ -1,25 +1,23 @@
-{ fetchFromGitHub, fetchHex, stdenv, erlang, rebar3WithPlugins, lib }:
+{ fetchFromGitHub, fetchHex, rebar3Relx, buildRebar3, lib }:
 let
   version = "0.15.0";
   owner = "erlang-ls";
   repo = "erlang_ls";
-  deps = import ./rebar-deps.nix { inherit fetchHex fetchFromGitHub; };
-in stdenv.mkDerivation {
+  deps = import ./rebar-deps.nix {
+    inherit fetchHex fetchFromGitHub;
+    builder = buildRebar3;
+  };
+in rebar3Relx {
+  name = "erlang-ls";
   inherit version;
-  pname = "erlang-ls";
-  buildInputs = [ erlang (rebar3WithPlugins { }) ];
   src = fetchFromGitHub {
     inherit owner repo;
     sha256 = "1s6zk8r5plm7ajifz17mvfrnk5mzbhj7alayink9phqbmzrypnfg";
     rev = version;
   };
-  buildPhase = ''
-    mkdir _checkouts
-    ${toString (lib.mapAttrsToList (k: v: ''
-      cp -R ${v} _checkouts/${k}
-    '') deps)}
-    make
-  '';
+  releaseType = "escript";
+  beamDeps = builtins.attrValues deps;
+  buildPhase = "HOME=. make";
   installPhase = ''
     mkdir -p $out/bin
     cp _build/default/bin/erlang_ls $out/bin/