diff --git a/.drom b/.drom
index 7932006..d8bcf85 100644
--- a/.drom
+++ b/.drom
@@ -5,7 +5,7 @@ version:0.9.0
 
 # hash of toml configuration files
 # used for generation of all files
-9aa97f19d5f4d407d8d3ee24f5aab0c5:.
+95833d0bdbcee78f882a5a625ed0d0e4:.
 # end context for .
 
 # begin context for .github/workflows/ci.ml
@@ -15,12 +15,12 @@ ac2aab1d8f78befbbfca730668f71e8d:.github/workflows/ci.ml
 
 # begin context for .github/workflows/workflow.yml
 # file .github/workflows/workflow.yml
-0ccff850a6ed3d421d1a75eee435bc14:.github/workflows/workflow.yml
+6b1ee9e0d62afe299c8fe62efa42c21d:.github/workflows/workflow.yml
 # end context for .github/workflows/workflow.yml
 
 # begin context for .gitignore
 # file .gitignore
-4fbab3b9cc53d400585f1f8b93288bfe:.gitignore
+b82bcaa637d3f162f45c404af9dd3b4d:.gitignore
 # end context for .gitignore
 
 # begin context for .ocamlformat
@@ -38,6 +38,16 @@ c8f70450e7d78c0387644864ffe8cbd5:.ocamlformat-ignore
 1281376e351d6c2be9ea4c576a29ebd4:.ocp-indent
 # end context for .ocp-indent
 
+# begin context for .vscode/settings.json
+# file .vscode/settings.json
+c3d12805c4eeee16a89bfeee357c8325:.vscode/settings.json
+# end context for .vscode/settings.json
+
+# begin context for .vscode/tasks.json
+# file .vscode/tasks.json
+7884eee2b10cf89cff5d1e466646b046:.vscode/tasks.json
+# end context for .vscode/tasks.json
+
 # begin context for CHANGES.md
 # file CHANGES.md
 7a038eccc259630a7aaa876eceb826ba:CHANGES.md
@@ -50,9 +60,14 @@ cdfde087b1ceb33b9c5f9d01ddc08d62:LICENSE.md
 
 # begin context for Makefile
 # file Makefile
-af1157fb3599c96e00152d564db64b64:Makefile
+05325f8fa82ef34fa0bab395248cc8b3:Makefile
 # end context for Makefile
 
+# begin context for Makefile.drom
+# file Makefile.drom
+25061d68284137e2639975011a16b300:Makefile.drom
+# end context for Makefile.drom
+
 # begin context for README.md
 # file README.md
 b437ded55955d885b421f442f61f59bb:README.md
@@ -80,7 +95,7 @@ c37a7235a116dd40fbb23168977dd549:docs/doc/index.html
 
 # begin context for docs/index.html
 # file docs/index.html
-2ebaaca3b5699237d9b2b3a92092f2c2:docs/index.html
+0677f3ef5de144072f0dda02b8cd7f7e:docs/index.html
 # end context for docs/index.html
 
 # begin context for docs/sphinx/index.html
@@ -95,7 +110,7 @@ c8281f46ba9a11d0b61bc8ef67eaa357:docs/style.css
 
 # begin context for drom.toml
 # file drom.toml
-61839e8d3bf7209159a62ad2a75f2c66:drom.toml
+95d29c77567f1a83f56cd68941308a44:drom.toml
 # end context for drom.toml
 
 # begin context for dune
@@ -105,12 +120,14 @@ df544cfaf9078d1bba2f90ed1b5adf5f:dune
 
 # begin context for dune-project
 # file dune-project
-6d4cd5636f52fc7edf771a588766bb6c:dune-project
+43b99f0e75cf087e6db9f4111d8f91fd:dune-project
+416e6e9216aadb14b8d518a6094d828b:dune-project
 # end context for dune-project
 
 # begin context for opam/ez_file.opam
 # file opam/ez_file.opam
-181b3a7dd59114806144fa4c1b4a01b3:opam/ez_file.opam
+45cb77a1e984ab8eb84d21ce2b2cf362:opam/ez_file.opam
+fce746e3f55c5b5faa25451407842c0a:opam/ez_file.opam
 # end context for opam/ez_file.opam
 
 # begin context for scripts/after.sh
@@ -125,9 +142,14 @@ df544cfaf9078d1bba2f90ed1b5adf5f:dune
 
 # begin context for scripts/copy-bin.sh
 # file scripts/copy-bin.sh
-bb3a9d286f0dc64021db4194427263ee:scripts/copy-bin.sh
+7fe4ada2a2fc5a0ebf9a2f483679a0ae:scripts/copy-bin.sh
 # end context for scripts/copy-bin.sh
 
+# begin context for scripts/static-build.sh
+# file scripts/static-build.sh
+cda3f8bad69d9c6e8cbeab1c720d739a:scripts/static-build.sh
+# end context for scripts/static-build.sh
+
 # begin context for sphinx/_static/css/fixes.css
 # file sphinx/_static/css/fixes.css
 68b329da9893e34099c7d8ad5cb9c940:sphinx/_static/css/fixes.css
@@ -150,7 +172,7 @@ bb3a9d286f0dc64021db4194427263ee:scripts/copy-bin.sh
 
 # begin context for sphinx/install.rst
 # file sphinx/install.rst
-51fc8c1636ef901c660808ace2fa032f:sphinx/install.rst
+1283ed1cc1357f05e4018c2e41e18103:sphinx/install.rst
 # end context for sphinx/install.rst
 
 # begin context for sphinx/license.rst
@@ -160,7 +182,7 @@ bb3a9d286f0dc64021db4194427263ee:scripts/copy-bin.sh
 
 # begin context for src/ez_file/dune
 # file src/ez_file/dune
-4ebbfb6c250e6241171b938a4bc7f6c0:src/ez_file/dune
+d4c00bd7acad8b3918b729fc6fb153f9:src/ez_file/dune
 # end context for src/ez_file/dune
 
 # begin context for src/ez_file/index.mld
@@ -178,37 +200,12 @@ d084e0c0b356453f70a0ab97451d4863:src/ez_file/package.toml
 e2b4f39fcfb303f845699e550cb89a31:test/expect-tests/dune
 # end context for test/expect-tests/dune
 
+# begin context for test/expect-tests/dune.drom
+# file test/expect-tests/dune.drom
+619a1392093d0d7aad989e3d225d719f:test/expect-tests/dune.drom
+# end context for test/expect-tests/dune.drom
+
 # begin context for test/expect-tests/test.ml
 # file test/expect-tests/test.ml
 734ed6b2b1cb8e0d6bce316d155bb157:test/expect-tests/test.ml
 # end context for test/expect-tests/test.ml
-
-# begin context for test/inline-tests/dune
-# file test/inline-tests/dune
-f83749a3827aaac58638994a6e6528d1:test/inline-tests/dune
-# end context for test/inline-tests/dune
-
-# begin context for test/inline-tests/test.ml
-# file test/inline-tests/test.ml
-e001d04969100c711855223ad6c23e6a:test/inline-tests/test.ml
-# end context for test/inline-tests/test.ml
-
-# begin context for test/output-tests/dune
-# file test/output-tests/dune
-75c72884478404495ffa9485c85ac098:test/output-tests/dune
-# end context for test/output-tests/dune
-
-# begin context for test/output-tests/test1.expected
-# file test/output-tests/test1.expected
-f0ef7081e1539ac00ef5b761b4fb01b3:test/output-tests/test1.expected
-# end context for test/output-tests/test1.expected
-
-# begin context for test/output-tests/test2.expected
-# file test/output-tests/test2.expected
-894dddf3304cbcb0fe04f7c2bbd56073:test/output-tests/test2.expected
-# end context for test/output-tests/test2.expected
-
-# begin context for test/output-tests/test2.ml
-# file test/output-tests/test2.ml
-704ff05ffd8b0e50716542fa55b2db8a:test/output-tests/test2.ml
-# end context for test/output-tests/test2.ml
diff --git a/.github/workflows/workflow.yml b/.github/workflows/workflow.yml
index bdd89be..1e3187a 100644
--- a/.github/workflows/workflow.yml
+++ b/.github/workflows/workflow.yml
@@ -1,5 +1,6 @@
 name: Main Workflow
 
+# use fields.git-main-branch to change from master
 on:
   pull_request:
     branches:
@@ -16,62 +17,66 @@ jobs:
         os:
           - ubuntu-latest
           - macos-latest
+          - windows-latest
         ocaml-compiler:
-          - 4.10.0
+          - 4.14.2
         skip_test:
           - false
 
         include:
           - os: ubuntu-latest
-            ocaml-compiler: 4.07.0
+            ocaml-compiler: 4.11.0
             skip_test: true
 
 
+# we need permissions to deploy docs
+    permissions:
+      contents: write
+
     runs-on: ${{ matrix.os }}
 
+    # use fields.github-workflow-env to add something here
+
     steps:
       - name: Checkout code
         uses: actions/checkout@v2
 
       - name: Retrieve opam cache
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         id: cache-opam
         with:
           path: ~/.opam
-          key: v2-${{ runner.os }}-ez_file-${{ matrix.ocaml-compiler }}-${{ hashFiles('opam/*.opam') }}
+          key: v4-${{ runner.os }}-ez_file-${{ matrix.ocaml-compiler }}-${{ hashFiles('opam/*.opam') }}
 #          restore-keys: |
-#            v2-${{ runner.os }}-opam-${{ matrix.ocaml-compiler }}-
+#            v4-${{ runner.os }}-opam-${{ matrix.ocaml-compiler }}-
 
       - name: Use OCaml ${{ matrix.ocaml-compiler }}
-        uses: avsm/setup-ocaml@v2
+        uses: avsm/setup-ocaml@v3
         with:
           ocaml-compiler: ${{ matrix.ocaml-compiler }}
           opam-pin: false
-          opam-depext: false
 
       - name: Set git user
         run: |
           git config --global user.name github-actions
           git config --global user.email github-actions-bot@users.noreply.github.com
 
-      # define opam-repo = "git+https://" to add an extra opam repo
+      # use fields.opam-repo = "git+https://" to add an 'extra' opam repository
 
       - run: opam pin add . -y --no-action
 
-      - run: opam depext -y ez_file
-#        if: steps.cache-opam.outputs.cache-hit != 'true'
-
-      - run: opam install -y opam/*.opam --deps-only --with-test
-#        if: steps.cache-opam.outputs.cache-hit != 'true'
+      - run: opam install -y ./opam/*.opam --deps-only --with-test
 
-#      - run: opam upgrade --fixup
-#        if: steps.cache-opam.outputs.cache-hit == 'true'
-
-      - run: dos2unix scripts/*.sh
+      # Use fields.build-scripts to add more scripts to convert here
+      - run: dos2unix scripts/*.sh 
         if: matrix.os == 'windows-latest'
 
+      # Use fields.github-workflow-before-build to add something here
+
       - run: make build
 
+      # Use fields.github-workflow-after-build to add something here
+
       - name: run test suite
         run: |
           ./scripts/before.sh test
@@ -79,13 +84,15 @@ jobs:
           ./scripts/after.sh test
         if: matrix.skip_test  != 'true'
 
+      # Use fields.github-workflow-after-test to add something here
+
       - name: test source is well formatted
         run: make fmt
         continue-on-error: true
-        if: matrix.ocaml-compiler == '4.10.0' && matrix.os == 'ubuntu-latest'
+        if: matrix.ocaml-compiler == '4.14.2' && matrix.os == 'ubuntu-latest'
 
       - name: build-doc
-        if: github.ref == 'refs/heads/master' && matrix.ocaml-compiler == '4.10.0' && matrix.os == 'ubuntu-latest'
+        if: github.ref == 'refs/heads/master' && matrix.ocaml-compiler == '4.14.2' && matrix.os == 'ubuntu-latest'
         run: |
              sudo apt install -yqq python3-sphinx python3-sphinx-rtd-theme
              opam install -y dune odoc
@@ -96,9 +103,12 @@ jobs:
 
       - name: deploy-doc
         uses: JamesIves/github-pages-deploy-action@3.6.2
-        if: github.ref == 'refs/heads/master' && matrix.ocaml-compiler == '4.10.0' && matrix.os == 'ubuntu-latest'
+        if: github.ref == 'refs/heads/master' && matrix.ocaml-compiler == '4.14.2' && matrix.os == 'ubuntu-latest'
         with:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           BRANCH: gh-pages
           FOLDER: _drom/docs/
           CLEAN: true
+
+# Use fields.github-workflow-trailer to add a trailer here
+
diff --git a/.gitignore b/.gitignore
index 6f62fd4..9bf1137 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,7 +2,6 @@
 *~
 _build
 .merlin
-.vscode
 /_drom
 /_opam
 /_build
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..b582063
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,6 @@
+{
+    "ocaml.sandbox": {
+        "kind": "opam"
+        "switch": "${workspaceFolder}"
+    }
+}
diff --git a/.vscode/tasks.json b/.vscode/tasks.json
new file mode 100644
index 0000000..6df6495
--- /dev/null
+++ b/.vscode/tasks.json
@@ -0,0 +1,25 @@
+{
+    // See https://go.microsoft.com/fwlink/?LinkId=733558
+    // for the documentation about the tasks.json format
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "ocaml: dune build",
+            "type": "shell",
+            "command": "dune build",
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            }
+        },
+        {
+            "label": "ocaml: dune runtest -f",
+            "type": "shell",
+            "command": "dune runtest -f",
+            "group": {
+                "kind": "test",
+                "isDefault": true
+            }
+        }
+    ]
+}
diff --git a/Makefile b/Makefile
index ab94d1a..4b05c04 100644
--- a/Makefile
+++ b/Makefile
@@ -1,88 +1,2 @@
-# Generated by "drom project"
-.PHONY: all build build-deps fmt fmt-check install dev-deps test
-.PHONY: clean distclean
-
-DEV_DEPS := merlin ocamlformat odoc ppx_expect ppx_inline_test
-
-
-SPHINX_TARGET:=_drom/docs/sphinx
-
-ODOC_TARGET:=_drom/docs/doc/.
-
-
-# Use these non-generated files to include more rules here (and
-# Makefile.trailer at the end)
--include Makefile.header
--include Makefile.config
-
-all: build
-
-build:
-	./scripts/before.sh build
-	opam exec -- dune build @install
-	./scripts/copy-bin.sh ez_file
-	./scripts/after.sh build
-
-build-deps:
-	if ! [ -e _opam ]; then \
-	   opam switch create . 4.10.0 ; \
-	fi
-	opam install ./*.opam --deps-only
-
-
-.PHONY: doc-common odoc view sphinx
-doc-common: build
-	mkdir -p _drom/docs
-	rsync -auv docs/. _drom/docs/.
-
-sphinx: doc-common
-	./scripts/before.sh sphinx ${SPHINX_TARGET}
-	sphinx-build sphinx ${SPHINX_TARGET}
-	./scripts/after.sh sphinx  ${SPHINX_TARGET}
-
-odoc: doc-common
-	mkdir -p ${ODOC_TARGET}
-	./scripts/before.sh odoc ${ODOC_TARGET}
-	opam exec -- dune build @doc
-	rsync -auv --delete _build/default/_doc/_html/. ${ODOC_TARGET}
-	./scripts/after.sh odoc ${ODOC_TARGET}
-
-doc: doc-common odoc sphinx
-
-view:
-	xdg-open file://$$(pwd)/_drom/docs/index.html
-
-fmt:
-	opam exec -- dune build @fmt --auto-promote
-
-fmt-check:
-	opam exec -- dune build @fmt
-
-install:
-	opam pin -y --no-action -k path .
-	opam install -y .
-
-opam:
-	opam pin -k path .
-
-uninstall:
-	opam uninstall .
-
-dev-deps:
-	opam install ./*.opam --deps-only --with-doc --with-test
-
-test:
-	./scripts/before.sh test
-	opam exec -- dune build @runtest
-	./scripts/after.sh test
-
-clean:
-	rm -rf _build
-	./scripts/after.sh clean
-
-distclean: clean
-	rm -rf _opam _drom
-	./scripts/after.sh distclean
-
--include Makefile.trailer
+include Makefile.drom
 
diff --git a/Makefile.drom b/Makefile.drom
new file mode 100644
index 0000000..7214ecf
--- /dev/null
+++ b/Makefile.drom
@@ -0,0 +1,83 @@
+# Maintained by "drom project"
+.PHONY: $(DROMNS)build $(DROMNS)build-deps $(DROMNS)fmt $(DROMNS)fmt-check
+.PHONY: $(DROMNS)install $(DROMNS)dev-deps $(DROMNS)test
+.PHONY: $(DROMNS)clean $(DROMNS)distclean
+
+DROM_DEV_DEPS := merlin ocamlformat odoc ppx_expect ppx_inline_test $(DEV_DEPS)
+
+
+SPHINX_TARGET:=_drom/docs/sphinx
+
+ODOC_TARGET:=_drom/docs/doc/.
+
+
+$(DROMNS)build:
+	./scripts/before.sh build
+	opam exec -- dune build @install
+	./scripts/copy-bin.sh ez_file
+	./scripts/after.sh build
+
+$(DROMNS)build-deps:
+	if ! [ -e _opam ]; then \
+	   opam switch create . 4.14.2 ; \
+	fi
+	opam install ./opam/*.opam --deps-only
+
+
+.PHONY: $(DROMNS)doc-common $(DROMNS)odoc $(DROMNS)view
+.PHONY: $(DROMNS)sphinx
+$(DROMNS)doc-common: $(DROMNS)build
+	mkdir -p _drom/docs
+	rsync -auv docs/. _drom/docs/.
+
+$(DROMNS)sphinx: $(DROMNS)doc-common
+	./scripts/before.sh sphinx ${SPHINX_TARGET}
+	sphinx-build sphinx ${SPHINX_TARGET}
+	./scripts/after.sh sphinx  ${SPHINX_TARGET}
+
+$(DROMNS)odoc: $(DROMNS)doc-common
+	mkdir -p ${ODOC_TARGET}
+	./scripts/before.sh odoc ${ODOC_TARGET}
+	opam exec -- dune build @doc
+	rsync -auv --delete _build/default/_doc/_html/. ${ODOC_TARGET}
+	./scripts/after.sh odoc ${ODOC_TARGET}
+
+$(DROMNS)doc: $(DROMNS)doc-common $(DROMNS)odoc $(DROMNS)sphinx
+
+$(DROMNS)view:
+	xdg-open file://$$(pwd)/_drom/docs/index.html
+
+$(DROMNS)fmt:
+	opam exec -- dune build @fmt --auto-promote
+
+$(DROMNS)fmt-check:
+	opam exec -- dune build @fmt
+
+$(DROMNS)install:
+	opam pin -y --no-action -k path .
+	opam install -y .
+
+$(DROMNS)opam:
+	opam pin -k path .
+
+$(DROMNS)uninstall:
+	opam uninstall .
+
+$(DROMNS)dev-deps:
+	opam install ./opam/*.opam --deps-only --with-doc --with-test
+
+$(DROMNS)test:
+	./scripts/before.sh test
+	opam exec -- dune build @runtest
+	./scripts/after.sh test
+
+$(DROMNS)clean:
+	rm -rf _build
+	rm -f *.exe *~
+	./scripts/after.sh clean
+
+$(DROMNS)distclean: $(DROMNS)clean
+	rm -rf _opam _drom
+	./scripts/after.sh distclean
+
+
diff --git a/docs/index.html b/docs/index.html
index eabcd46..a99b2d7 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -3,7 +3,7 @@
   <head>
     <meta charset="utf-8">
     <title>ez_file</title>
-    <link rel="stylesheet" href="style.css?v=5d7320a9a8657af61f899c84ec3bdcb7"/>
+    <link rel="stylesheet" href="style.css?v=1eb62145308aed80e0f86b959d6f7fd0"/>
     <link rel="icon" type="image/png" sizes="804x804"  href="favicon.png" />
   </head>
   <body>
@@ -27,6 +27,9 @@ <h1>ez_file</h1>
         </ul>
         <p>Authors:</p>
         <ul>  <li><p>Fabrice Le Fessant &lt;fabrice.le_fessant&commat;ocamlpro.com&gt;</p></li></ul>
+      </div>
+      <div class="section">
+	
       </div>
       <div class="trailer">
         <hr/>
diff --git a/drom.toml b/drom.toml
index c88bf14..1b42bc6 100644
--- a/drom.toml
+++ b/drom.toml
@@ -1,18 +1,20 @@
 [project]
-drom-version = "0.1"
+drom-version = "0.9.3"
+share-repo = "https://github.com/OCamlPro/drom-share"
+share-version = "0.9.3"
 
 [project]
 authors = ["Fabrice Le Fessant <fabrice.le_fessant@ocamlpro.com>"]
-ci-systems = ["ubuntu-latest", "macos-latest"]
+ci-systems = ["ubuntu-latest", "macos-latest", "windows-latest"]
 copyright = "OCamlPro SAS"
-edition = "4.10.0"
+edition = "4.14.2"
 github-organization = "ocamlpro"
 license = "LGPL2"
-min-edition = "4.07.0"
+min-edition = "4.11.0"
 name = "ez_file"
 skeleton = "program"
 synopsis = "Easy file manipulation (read_file, write_file, etc.)"
-version = "0.4.0"
+version = "0.4.1"
 
 # keys that you could also define:
 # odoc-target = "...odoc-target..."
@@ -31,22 +33,25 @@ and scan directories.
 """
 
 [project]
-skip = ["src/ez_file/main.ml", "CHANGES.md", "test/expect-tests/test.ml"]
+skip = ["src/ez_file/main.ml", "CHANGES.md",
+        "test/expect-tests/test.ml",
+        "test/inline-tests/dune", "test/inline-tests/dune.drom",
+        "test/inline-tests/test.ml",
+        "test/output-tests/dune", "test/output-tests/dune.drom",
+        "test/output-tests/test1.expected",
+        "test/output-tests/test2.ml",
+        "test/output-tests/test2.expected"]
 
 # project-wide library dependencies (not for package-specific deps)
 [dependencies]
 
 # project-wide tools dependencies (not for package-specific deps)
 [tools]
-dune = "2.6.0"
-[tools.ocamlformat]
-for-test = true
+dune = "2.8"
 [tools.odoc]
 for-doc = true
 [tools.ppx_expect]
 for-test = true
-[tools.ppx_inline_test]
-for-test = true
 
 [project]
 
@@ -73,6 +78,7 @@ share-dirs = ["share"]
 #  readme-trailer = "..."
 #  dot-gitignore-trailer = "..."
 [fields]
+dune-lang = "2.8.0"
 # ...
 
 [[package]]
diff --git a/dune-project b/dune-project
index 2100e3b..d5f1dd1 100644
--- a/dune-project
+++ b/dune-project
@@ -3,9 +3,8 @@
 
 (cram enable)
 (name ez_file)
-(allow_approximate_merlin)
 (generate_opam_files false)
-(version 0.4.0)
+(version 0.4.1)
 (formatting (enabled_for ocaml reason))
 
 (package
@@ -13,17 +12,23 @@
  (synopsis "Easy file manipulation (read_file, write_file, etc.)")
  (description "This library provides some modules to read and write files, and create \nand scan directories.\n")
  
+  (sites
+    
+  )
+
  (depends
-   (ocaml (>= 4.07.0))
+   (ocaml (>= 4.11.0))
    (re (and (>= 1.8.0) (< 2.0.0)))
    (ocplib_stuff (and (>= 0.1.0) (< 1.0.0)))
    (base-unix ( >= base ))
-   ppx_inline_test
    ppx_expect
    odoc
-   ocamlformat
-   (dune (and (>= 2.6.0) (< 3.0.0)))
+   (dune ( >= 2.8 ))
   )
  )
 
 
+
+; add this in dune-project-trailer if you need it, as it is not used
+; by the most recent versions of dune
+;(allow_approximate_merlin)
diff --git a/opam/ez_file.opam b/opam/ez_file.opam
index 3214b82..cd1fb6b 100644
--- a/opam/ez_file.opam
+++ b/opam/ez_file.opam
@@ -2,7 +2,7 @@
 # Do not modify, or add to the `skip` field of `drom.toml`.
 opam-version: "2.0"
 name: "ez_file"
-version: "0.4.0"
+version: "0.4.1"
 license: "LGPL-2.1-only WITH OCaml-LGPL-linking-exception"
 synopsis: "Easy file manipulation (read_file, write_file, etc.)"
 description: """\
@@ -36,14 +36,13 @@ install: [
   ["sh" "-c" "./scripts/before.sh install '%{name}%'"]
 ]
 depends: [
-  "ocaml" {>= "4.07.0"}
+  "ocaml" {>= "4.11.0"}
   "dune" {>= "2.8.0"}
   "re" {>= "1.8.0" & < "2.0.0"}
   "ocplib_stuff" {>= "0.1.0" & < "1.0.0"}
   "base-unix" {>= "base"}
-  "ppx_inline_test" {with-test}
   "ppx_expect" {with-test}
   "odoc" {with-doc}
-  "ocamlformat" {with-test}
-  "dune" {>= "2.6.0" & < "3.0.0"}
-]
\ No newline at end of file
+  "dune" {>= "2.8"}
+]
+# Content of `opam-trailer` field:
\ No newline at end of file
diff --git a/scripts/copy-bin.sh b/scripts/copy-bin.sh
index 096ef52..09b0317 100755
--- a/scripts/copy-bin.sh
+++ b/scripts/copy-bin.sh
@@ -5,6 +5,6 @@ PACKAGES="$*"
 for package in ${PACKAGES}; do
     file=_build/default/src/${package}/main.exe
     if [ -f ${file} ]; then
-        cp -f ${file} ${package}
+        cp -f ${file} ${package}.exe
     fi
 done
diff --git a/scripts/static-build.sh b/scripts/static-build.sh
new file mode 100755
index 0000000..000948d
--- /dev/null
+++ b/scripts/static-build.sh
@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+set -ue
+
+LC_ALL=C
+
+cd $(dirname "$0")/..
+
+## Run build in container
+
+set -o pipefail
+
+# Use `docker-alpine-image` field to replace ocamlpro/ocaml:4.13
+# and `docker-alpine-packages` to add more apk packages
+git ls-files -z | xargs -0 tar c | \
+docker run --rm -i \
+    ocamlpro/ocaml:4.13 \
+    sh -uexc \
+      'tar x >&2 &&
+       sudo apk add g++ openssl-libs-static bash  >&2 &&
+       opam update >&2 &&
+       opam switch create . ocaml-system --deps-only --locked >&2 &&
+       opam exec make LINKING_MODE=static >&2 &&
+       tar c -hC _build/install/default/bin .' | \
+  tar vx
+
+# if you get: "this does not look like a tar archive", you might have forgotten
+# a >&2 on a command (nothing should be printed on stdout, except the tar file)
diff --git a/sphinx/install.rst b/sphinx/install.rst
index 598d339..8399850 100644
--- a/sphinx/install.rst
+++ b/sphinx/install.rst
@@ -13,10 +13,10 @@ Build and install with :code:`dune`
 
 Checkout the sources of :code:`ez_file` in a directory.
 
-You need a switch with at least version :code:`4.07.0` of OCaml,
+You need a switch with at least version :code:`4.12.0` of OCaml,
 you can for example create it with::
 
-  opam switch create 4.10.0
+  opam switch create 4.12.0
 
 Then, you need to install all the dependencies::
 
diff --git a/src/ez_file/dune b/src/ez_file/dune
index 9b69be4..2f96064 100644
--- a/src/ez_file/dune
+++ b/src/ez_file/dune
@@ -4,7 +4,11 @@
   (name ez_file)
   (public_name ez_file)
   (wrapped true)
+  ; use field 'dune-libraries' to add libraries without opam deps
   (libraries re ocplib_stuff unix )
+  ; use field 'dune-flags' to set this value
+  (flags (:standard))
+  ; use field 'dune-stanzas' to add more stanzas here
   
   
   )
@@ -13,4 +17,5 @@
 (documentation
   (package ez_file))
 
+; use field 'dune-trailer' to add more stuff here
 
diff --git a/src/ez_file/package.toml b/src/ez_file/package.toml
index f0321f7..986a6a4 100644
--- a/src/ez_file/package.toml
+++ b/src/ez_file/package.toml
@@ -39,7 +39,7 @@ kind = "library"
 # optional = true
 
 # module name used to pack modules (if pack-modules is true)
-# pack = "EzFile"
+# pack = "Mylib"
 
 # preprocessing options
 #  preprocess = "per-module (((action (run ./toto.sh %{input-file})) mod))" 
diff --git a/test/expect-tests/dune b/test/expect-tests/dune
index 7f31223..ce09bdd 100644
--- a/test/expect-tests/dune
+++ b/test/expect-tests/dune
@@ -1,10 +1 @@
-; if you modify this file, add 'test' to the 'skip' field in drom.toml
-
-(library
- (name lib_expect_tests)
- (preprocess
-  (pps ppx_expect))
- (inline_tests
-  (modes best)) ; add js for testing with nodejs
- (libraries ez_file) ; add your project libraries here
- )
+(include dune.drom)
diff --git a/test/expect-tests/dune.drom b/test/expect-tests/dune.drom
new file mode 100644
index 0000000..536d09b
--- /dev/null
+++ b/test/expect-tests/dune.drom
@@ -0,0 +1,14 @@
+; This file is managed by 'drom project'
+
+; You may want to remove it by adding 'test/expect-tests/dune.drom'
+; to 'skip' in 'drom.toml', or '@test' for all tests
+; and remove the '(include dune.drom)' from 'dune' in the current dir
+
+(library
+ (name lib_expect_tests)
+ (preprocess
+  (pps ppx_expect))
+ (inline_tests
+  (modes best)) ; add js for testing with nodejs
+ (libraries ez_file) ; add your project libraries here
+ )
diff --git a/test/inline-tests/dune b/test/inline-tests/dune
deleted file mode 100644
index b9bf212..0000000
--- a/test/inline-tests/dune
+++ /dev/null
@@ -1,9 +0,0 @@
-; if you modify this file, add 'test' to the 'skip' field in drom.toml
-
-(library
- (name lib_inline_tests)
- (preprocess
-  (pps ppx_inline_test))
- (inline_tests
-  (modes best)) ; add js for testing with nodejs
- (libraries ez_file))
diff --git a/test/inline-tests/test.ml b/test/inline-tests/test.ml
deleted file mode 100644
index cab8a3d..0000000
--- a/test/inline-tests/test.ml
+++ /dev/null
@@ -1,8 +0,0 @@
-let%test "must-return-true" = true
-
-let%test_unit "must-return-unit" = ()
-
-let%test_module "module" =
-  ( module struct
-    let%test "must-return-true" = true
-  end )
diff --git a/test/output-tests/dune b/test/output-tests/dune
deleted file mode 100644
index 4821e68..0000000
--- a/test/output-tests/dune
+++ /dev/null
@@ -1,37 +0,0 @@
-; if you modify this file, add 'test' to the 'skip' field in drom.toml
-
-; a first example where we would test the behavior of one of the executables
-; that we generate else-where
-
-(rule
- (deps test1.expected)
- (action
-  (with-stdout-to
-   test1.output
-   (run cat test1.expected))))
-
-(rule
- (alias runtest)
- (action
-  (diff test1.expected test1.output)))
-
-; a second example where we generate a file and test its output
-
-(executable
- (name test2)
- (libraries ez_file) ; add your own library here
- )
-
-(alias
- (name buildtest)
- (deps test2.exe))
-
-(rule
- (with-stdout-to
-  test2.output
-  (run %{exe:test2.exe})))
-
-(rule
- (alias runtest)
- (action
-  (diff test2.expected test2.output)))
diff --git a/test/output-tests/test1.expected b/test/output-tests/test1.expected
deleted file mode 100644
index 802992c..0000000
--- a/test/output-tests/test1.expected
+++ /dev/null
@@ -1 +0,0 @@
-Hello world
diff --git a/test/output-tests/test2.expected b/test/output-tests/test2.expected
deleted file mode 100644
index 632e4fe..0000000
--- a/test/output-tests/test2.expected
+++ /dev/null
@@ -1 +0,0 @@
-Bonjour
diff --git a/test/output-tests/test2.ml b/test/output-tests/test2.ml
deleted file mode 100644
index 31422a4..0000000
--- a/test/output-tests/test2.ml
+++ /dev/null
@@ -1,3 +0,0 @@
-let () =
-  Printf.printf "Bonjour\n%!";
-  exit 0