diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
deleted file mode 100644
index f3c10a261..000000000
--- a/.pre-commit-config.yaml
+++ /dev/null
@@ -1,36 +0,0 @@
-# to disable hooks: SKIP=pylint git commit ...
-repos:
-  - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v3.2.0
-    hooks:
-      - id: trailing-whitespace
-        exclude: "snapshots/"
-      - id: mixed-line-ending
-        exclude: "snapshots/"
-
-  - repo: https://github.com/psf/black
-    rev: 20.8b1
-    hooks:
-      - id: black
-
-  - repo: https://gitlab.com/pycqa/flake8
-    rev: 3.8.3
-    hooks:
-      - id: flake8
-  - repo: https://github.com/pycqa/pydocstyle
-    rev: 5.1.1
-    hooks:
-      - id: pydocstyle
-        files: ^src/xtgeo/plot
-        exclude: _.*\.py
-  - repo: https://github.com/pycqa/pylint
-    rev: pylint-2.6.0
-    hooks:
-      - id: pylint
-        files: ^src/xtgeo/plot
-  # - repo: https://github.com/PyCQA/bandit
-  #   rev: 1.7.0
-  #   hooks:
-  #   - id: bandit
-  #     args: [--skip, "B311", --recursive, --quiet]
-  #     files: src/xtgeo
diff --git a/docs/contributing.rst b/docs/contributing.rst
index 50deaad96..e728f3335 100644
--- a/docs/contributing.rst
+++ b/docs/contributing.rst
@@ -83,9 +83,7 @@ up your fork for local development (first time):
     $ source bin/activate
     $ cd /your_path_to_git_clone/xtgeo/
     $ pip install pip -U
-    $ pip install -r requirements/requirements_dev.txt
-    $ python setup.py clean
-    $ python setup.py develop
+    $ pip install ".[dev,docs]"
     $ pytest  # to check that stuff works
 
 4. Create a branch for local development:
@@ -100,13 +98,12 @@ Now you can make your changes locally.
 
 .. code-block:: bash
 
-    $ flake8 <your edited code>
-    $ pylint <your edited code>
-    $ Use `pytest` for running tests
-    $ Run `black` on your python code, then there is no discussions on formatting
-
-To get ``flake8``, ``pylint`` and ``black`` and just pip install them into
-your virtualenv.
+    $ black src tests
+    $ flake8 src tests
+    $ isort src tests
+    $ mypy src
+    $ pylint src tests
+    $ pytest tests
 
 6. If you want to edit C code, take contact with the author for detailed instructions.
 
@@ -137,9 +134,7 @@ and it is targeted to Equinor usage using bash shell in Linux:
     $ source ~/venv/py36_rms12.0.2/bin/activate
     $ cd path_to_xtgeo/
     $ python -m pip install pip -U
-    $ pip install requirements/requirements_dev.txt
-    $ python setup.py clean
-    $ python setup.py develop
+    $ pip install ".[dev]"
     $ pytest
 
 Now you have an editable install in your virtual environment that can be ran
diff --git a/pyproject.toml b/pyproject.toml
index 77dada624..8f5747543 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -58,7 +58,6 @@ dependencies = [
     "segyio>1.8.0",
     "shapely>=1.6.2",
     "tables;platform_system != 'Darwin'",  # TODO: update when fixed for mac
-    "typing-extensions",
 ]
 
 [project.urls]
@@ -74,6 +73,7 @@ dev = [
     "flake8",
     "isort",
     "hypothesis",
+    "mypy",
     "pylint",
     "pytest",
     "pytest-benchmark",
@@ -83,6 +83,7 @@ dev = [
     "pytest-mock",
     "pytest-snapshot",
     "pytest-xdist",
+    "typing-extensions",
 ]
 docs = [
     "pydocstyle",
@@ -109,6 +110,7 @@ exclude = '''
   | buck-out
   | build
   | dist
+  | _theversion.py
   # The following are specific to Black, you probably don't want those.
   | blib2to3
   | tests/data
@@ -116,6 +118,12 @@ exclude = '''
 )/
 '''
 
+[tool.isort]
+profile = "black"
+
+[tool.mypy]
+ignore_missing_imports = true
+
 [tool.pydocstyle]
 convention = "google"
 match = '(?!(test_|_)).*\.py'
diff --git a/scripts/swig_manylinux.sh b/scripts/swig_manylinux.sh
deleted file mode 100755
index cdd20ab66..000000000
--- a/scripts/swig_manylinux.sh
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/bin/sh
-# For manylinux docker installs in CI
-
-echo "Download swig..."
-SWIGURL="https://ftp.osuosl.org/pub/blfs/conglomeration/swig"
-SWIG="swig-4.0.1"
-curl -O ${SWIGURL}/${SWIG}.tar.gz
-tar xzf ${SWIG}.tar.gz
-cd $SWIG
-echo "Download swig... done"
-
-echo "Download pcre..."
-curl -O "https://ftp.pcre.org/pub/pcre/pcre-8.38.tar.gz"
-sh Tools/pcre-build.sh > /dev/null
-echo "PCRE is built locally"
-
-sh ./configure \
-   --with-python \
-   --with-python3 \
-   --without-perl5 \
-   --without-ruby \
-   --without-tcl \
-   --without-maximum-compile-warnings \
-   > /dev/null
-make > /dev/null
-make install > /dev/null
-echo "SWIG installed"