diff --git a/.gitignore b/.gitignore
index 71050871..340d098a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,8 +1,8 @@
 .DS_Store
 .merlin
+!/.merlin
 npm-debug.log
 *.install
-_build
 examples/*/lib
 test/lib
 node_modules
diff --git a/.merlin b/.merlin
new file mode 100644
index 00000000..fe55a8d0
--- /dev/null
+++ b/.merlin
@@ -0,0 +1,13 @@
+B src
+B src/vendor
+B src/vendor/odoc_parser
+B src/vendor/omd
+B src/vendor/res_outcome_printer
+
+S src
+S src/vendor
+S src/vendor/odoc_parser
+S src/vendor/omd
+S src/vendor/res_outcome_printer
+
+FLG -w +26+27+32+33+39
diff --git a/Makefile b/Makefile
index cc262526..0a2adc86 100644
--- a/Makefile
+++ b/Makefile
@@ -27,9 +27,12 @@ lib/rescript-editor-support.exe: $(SOURCE_FILES)
 
 build-native: lib/rescript-editor-support.exe depend
 
+dce: build-native
+	node_modules/.bin/reanalyze -dce-cmt src -suppress src/vendor
+
 clean:
 	git clean -dfx src
 
 .DEFAULT_GOAL := build-native
 
-.PHONY: depend clean build-native
+.PHONY: depend clean build-native dce
diff --git a/Readme.md b/Readme.md
index e01307ab..dd6fed6f 100644
--- a/Readme.md
+++ b/Readme.md
@@ -8,23 +8,22 @@ The binary reads the `.cmt` and `.cmti` files and analyses them.
 
 ```
 opam switch 4.06.1
-opam opam install . --deps-only
 ```
 
 ## Build
 
 ```
-dune build
+make
 ```
 
-The built artifact is in `_build/install/default/bin/rescript-editor-support.exe`
+The built artifact is in `lib/rescript-editor-support.exe`
 
 ## Usage
 
 Run:
 
 ```sh
-_build/install/default/bin/rescript-editor-support.exe --help
+lib/rescript-editor-support.exe --help
 ```
 
 ## History
diff --git a/dune b/dune
deleted file mode 100644
index 9ed2ee1b..00000000
--- a/dune
+++ /dev/null
@@ -1,4 +0,0 @@
-(dirs :standard \ examples test)
-(env
-    (dev
-      (flags (:standard -warn-error -A))))
\ No newline at end of file
diff --git a/dune-project b/dune-project
deleted file mode 100644
index e679dee9..00000000
--- a/dune-project
+++ /dev/null
@@ -1,2 +0,0 @@
-(lang dune 1.7)
-(name rescript-editor-support)
\ No newline at end of file
diff --git a/package.json b/package.json
index fdb6f0e8..0c8f359c 100644
--- a/package.json
+++ b/package.json
@@ -2,8 +2,7 @@
   "name": "rescript-editor-support",
   "version": "1.0.0",
   "scripts": {
-    "test": "cd test && ./test.sh",
-    "dce": "dune build @check @all && node_modules/.bin/reanalyze -dce-cmt _build -suppress src/vendor"
+    "test": "cd test && ./test.sh"
   },
   "keywords": [
     "rescript",
diff --git a/rescript-editor-support.opam b/rescript-editor-support.opam
deleted file mode 100644
index 89908515..00000000
--- a/rescript-editor-support.opam
+++ /dev/null
@@ -1,19 +0,0 @@
-opam-version: "2.0"
-name: "rescript-editor-support"
-version: "~dev"
-synopsis: "Command line to support editor integration for ReScript"
-maintainer: "ReScript"
-authors: "ReScript Team"
-license: "MIT"
-homepage: "https://github.com/rescript-lang/rescript-editor-support"
-bug-reports:
-  "https://github.com/rescript-lang/rescript-editor-support/issues"
-depends: [
-  "dune" {>= "2.7"}
-  "ocaml" {= "4.06.1"}
-]
-build: [
-  ["dune" "build" "-p" name "@install"]
-]
-dev-repo: "git+https://github.com/rescript-lang/rescript-editor-support.git"
-
diff --git a/src/dune b/src/dune
deleted file mode 100644
index 611b3bfa..00000000
--- a/src/dune
+++ /dev/null
@@ -1,7 +0,0 @@
-(include_subdirs unqualified)
-(executable
-  (name RescriptEditorSupport)
-  (public_name rescript-editor-support.exe)
-  (libraries str compiler-libs.common unix)
-  (flags "-w" "+26+27+32+33+39")
-)