diff --git a/Seabreeze/CMakeLists.txt b/Seabreeze/CMakeLists.txt
index 77335161..78c06c11 100644
--- a/Seabreeze/CMakeLists.txt
+++ b/Seabreeze/CMakeLists.txt
@@ -20,7 +20,7 @@
  setup_qt()
  
  find_package(Libexecinfo        REQUIRED)
- find_package(Python 3           REQUIRED COMPONENTS Interpreter Development)
+ find_package(Python 3           REQUIRED COMPONENTS Interpreter Development.Module)
  find_package(PythonSitePackages REQUIRED)
  find_package(LEFDEF             REQUIRED)
  find_package(FLUTE              REQUIRED)
diff --git a/anabatic/CMakeLists.txt b/anabatic/CMakeLists.txt
index 825c5bd7..2bb1c8b4 100644
--- a/anabatic/CMakeLists.txt
+++ b/anabatic/CMakeLists.txt
@@ -19,7 +19,7 @@
  setup_boost()
  setup_qt()
  
- find_package(Python 3 REQUIRED COMPONENTS Interpreter Development)
+ find_package(Python 3 REQUIRED COMPONENTS Interpreter Development.Module)
  find_package(PythonSitePackages REQUIRED)
  find_package(FLUTE REQUIRED)
  find_package(HURRICANE REQUIRED)
diff --git a/bootstrap/CMakeLists.txt b/bootstrap/CMakeLists.txt
index 0194a460..b1e1c543 100644
--- a/bootstrap/CMakeLists.txt
+++ b/bootstrap/CMakeLists.txt
@@ -11,7 +11,7 @@
 
  list(INSERT CMAKE_MODULE_PATH 0 "${Bootstrap_SOURCE_DIR}/cmake_modules/")
  find_package(Bootstrap          REQUIRED)
- find_package(Python 3           REQUIRED COMPONENTS Interpreter Development )
+ find_package(Python 3           REQUIRED COMPONENTS Interpreter Development.Module )
  find_package(PythonSitePackages REQUIRED)
  print_cmake_module_path()
 
diff --git a/bora/CMakeLists.txt b/bora/CMakeLists.txt
index 47ff1916..f7555857 100644
--- a/bora/CMakeLists.txt
+++ b/bora/CMakeLists.txt
@@ -20,7 +20,7 @@
  setup_qwt()
  
  find_package(Libexecinfo        REQUIRED)
- find_package(Python 3           REQUIRED COMPONENTS Interpreter Development)
+ find_package(Python 3           REQUIRED COMPONENTS Interpreter Development.Module)
  find_package(PythonSitePackages REQUIRED)
  find_package(LEFDEF             REQUIRED)
  find_package(FLUTE              REQUIRED)
diff --git a/build.py b/builder.py
similarity index 98%
rename from build.py
rename to builder.py
index 2de84897..85344198 100644
--- a/build.py
+++ b/builder.py
@@ -5,18 +5,18 @@ import platform
 import re
 import subprocess
 import sys
-import sysconfig
 
 from distutils.version import LooseVersion
 from distutils.dir_util import copy_tree, remove_tree
 from distutils.sysconfig import get_python_inc
-import distutils.sysconfig as sysconfig
+from distutils import sysconfig
 from find_libpython import find_libpython
 from typing import Any, Dict
 
 from setuptools.command.build_ext import build_ext
 from setuptools.extension import Extension
 
+
 class CMakeExtension(Extension):
     name: str  # exists, even though IDE doesn't find it
 
@@ -86,7 +86,6 @@ class ExtensionBuilder(build_ext):
         cmake_args += [f"-DCORIOLIS_USER_TOP={install_dir}"]
 
         cmake_args += [f"-DPython_EXECUTABLE={sys.executable}"]
-        cmake_args += [f"-DPython_LIBRARY={find_libpython()}"]
 
         cmake_args += ["-DPOETRY=1"]
         cmake_args += ["-DWITH_QT5=1"]
@@ -96,6 +95,8 @@ class ExtensionBuilder(build_ext):
         cmake_args += ["-DCMAKE_INSTALL_RPATH='$ORIGIN/lib:$ORIGIN'"]
         cmake_args += ["-DCMAKE_INSTALL_RPATH_USE_LINK_PATH=TRUE"]
 
+
+        print(f"Using cmake args: {cmake_args}")
         subprocess.check_call(["cmake", "--debug-find", "--trace-redirect=build.cmake.trace", "--trace-expand",  ext.sourcedir] + cmake_args, cwd=build_dir, env=env)
         subprocess.check_call(["cmake", "--build", "."] + build_args, cwd=build_dir)
         subprocess.check_call(["cmake", "--install", ".", "--prefix", install_dir] + install_args, cwd=build_dir)
diff --git a/crlcore/CMakeLists.txt b/crlcore/CMakeLists.txt
index c33b7b82..00e82ed1 100644
--- a/crlcore/CMakeLists.txt
+++ b/crlcore/CMakeLists.txt
@@ -28,7 +28,7 @@
    find_package(Libbfd)
  endif()
  find_package(BZip2              REQUIRED)
- find_package(Python 3           REQUIRED COMPONENTS Interpreter Development)
+ find_package(Python 3           REQUIRED COMPONENTS Interpreter Development.Module)
  find_package(PythonSitePackages REQUIRED)
  find_package(BISON              REQUIRED)
  find_package(FLEX               REQUIRED)
diff --git a/cumulus/CMakeLists.txt b/cumulus/CMakeLists.txt
index 88663684..0b9c327c 100644
--- a/cumulus/CMakeLists.txt
+++ b/cumulus/CMakeLists.txt
@@ -15,7 +15,7 @@
  set_cmake_policies()
  setup_sysconfdir("${CMAKE_INSTALL_PREFIX}")
  
- find_package(Python 3           REQUIRED COMPONENTS Interpreter Development)
+ find_package(Python 3           REQUIRED COMPONENTS Interpreter Development.Module)
  find_package(PythonSitePackages REQUIRED)
  find_package(HURRICANE REQUIRED)
  find_package(CORIOLIS REQUIRED)
diff --git a/deprecated/katabatic/CMakeLists.txt b/deprecated/katabatic/CMakeLists.txt
index c87080a7..f0a2c54b 100644
--- a/deprecated/katabatic/CMakeLists.txt
+++ b/deprecated/katabatic/CMakeLists.txt
@@ -19,7 +19,7 @@
  setup_boost(program_options)
  setup_qt()
  
- find_package(Python 3           REQUIRED COMPONENTS Interpreter Development)
+ find_package(Python 3           REQUIRED COMPONENTS Interpreter Development.Module)
  find_package(PythonSitePackages REQUIRED)
  find_package(FLUTE REQUIRED)
  find_package(HURRICANE REQUIRED)
diff --git a/deprecated/kite/CMakeLists.txt b/deprecated/kite/CMakeLists.txt
index f1922c66..f3dfa321 100644
--- a/deprecated/kite/CMakeLists.txt
+++ b/deprecated/kite/CMakeLists.txt
@@ -19,7 +19,7 @@
  setup_boost(program_options)
  setup_qt()
  
- find_package(Python 3           REQUIRED COMPONENTS Interpreter Development)
+ find_package(Python 3           REQUIRED COMPONENTS Interpreter Development.Module)
  find_package(PythonSitePackages REQUIRED)
  find_package(FLUTE REQUIRED)
  find_package(LEFDEF REQUIRED)
diff --git a/deprecated/nimbus/CMakeLists.txt b/deprecated/nimbus/CMakeLists.txt
index 0b549ca9..aaedfdd6 100644
--- a/deprecated/nimbus/CMakeLists.txt
+++ b/deprecated/nimbus/CMakeLists.txt
@@ -14,7 +14,7 @@
  setup_boost(program_options)
  setup_qt()
  
- find_package(Python 3           REQUIRED COMPONENTS Interpreter Development)
+ find_package(Python 3           REQUIRED COMPONENTS Interpreter Development.Module)
  find_package(PythonSitePackages REQUIRED)
  find_package(HURRICANE          REQUIRED)
  find_package(CORIOLIS           REQUIRED)
diff --git a/deprecated/vlsisapd/CMakeLists.txt b/deprecated/vlsisapd/CMakeLists.txt
index 984b1ddc..71da9818 100644
--- a/deprecated/vlsisapd/CMakeLists.txt
+++ b/deprecated/vlsisapd/CMakeLists.txt
@@ -18,7 +18,7 @@
  setup_boost(program_options python)
 
  find_package(LibXml2 REQUIRED)
- find_package(Python 3 REQUIRED COMPONENTS Interpreter Development)
+ find_package(Python 3 REQUIRED COMPONENTS Interpreter Development.Module)
  find_package(PythonSitePackages REQUIRED)
  find_package(BISON REQUIRED)
  find_package(FLEX REQUIRED)
diff --git a/etesian/CMakeLists.txt b/etesian/CMakeLists.txt
index ae9b82b0..a859a644 100644
--- a/etesian/CMakeLists.txt
+++ b/etesian/CMakeLists.txt
@@ -18,7 +18,7 @@
  set_cmake_policies()
  setup_boost(program_options)
  
- find_package(Python 3           REQUIRED COMPONENTS Interpreter Development)
+ find_package(Python 3           REQUIRED COMPONENTS Interpreter Development.Module)
  find_package(PythonSitePackages REQUIRED)
  find_package(HURRICANE          REQUIRED)
 #find_package(KATABATIC          REQUIRED)
diff --git a/flute/CMakeLists.txt b/flute/CMakeLists.txt
index b7011add..61da4ea1 100644
--- a/flute/CMakeLists.txt
+++ b/flute/CMakeLists.txt
@@ -17,7 +17,7 @@
  check_distribution()
  setup_sysconfdir( "${CMAKE_INSTALL_PREFIX}" )
 
- find_package(Python 3           REQUIRED COMPONENTS Interpreter Development)
+ find_package(Python 3           REQUIRED COMPONENTS Interpreter Development.Module)
  find_package(PythonSitePackages REQUIRED)
  find_package(HURRICANE          REQUIRED)
  find_package(CORIOLIS           REQUIRED)
diff --git a/foehn/CMakeLists.txt b/foehn/CMakeLists.txt
index 09beea02..e679786a 100644
--- a/foehn/CMakeLists.txt
+++ b/foehn/CMakeLists.txt
@@ -20,7 +20,7 @@
  setup_qt()
  
  find_package(Libexecinfo        REQUIRED)
- find_package(Python 3           REQUIRED COMPONENTS Interpreter Development)
+ find_package(Python 3           REQUIRED COMPONENTS Interpreter Development.Module)
  find_package(PythonSitePackages REQUIRED)
  find_package(LEFDEF             REQUIRED)
  find_package(FLUTE              REQUIRED)
diff --git a/hurricane/CMakeLists.txt b/hurricane/CMakeLists.txt
index 91c9b06f..8b582fc0 100644
--- a/hurricane/CMakeLists.txt
+++ b/hurricane/CMakeLists.txt
@@ -24,7 +24,7 @@
  find_package(BZip2              REQUIRED)
  find_package(BISON              REQUIRED)
  find_package(FLEX               REQUIRED)
- find_package(Python           3 REQUIRED COMPONENTS Interpreter Development )
+ find_package(Python           3 REQUIRED COMPONENTS Interpreter Development.Module )
  find_package(PythonSitePackages REQUIRED)
  find_package(Libexecinfo        REQUIRED)
  if (USE_LIBBFD)
diff --git a/ispd/CMakeLists.txt b/ispd/CMakeLists.txt
index 63932fc5..db474da9 100644
--- a/ispd/CMakeLists.txt
+++ b/ispd/CMakeLists.txt
@@ -17,7 +17,7 @@
  
  set(QT_USE_QTXML "true")
  find_package(Qt4 REQUIRED)
- find_package(Python 3           REQUIRED COMPONENTS Interpreter Development)
+ find_package(Python 3           REQUIRED COMPONENTS Interpreter Development.Module)
  find_package(PythonSitePackages REQUIRED)
  find_package(HURRICANE REQUIRED)
  find_package(CORIOLIS REQUIRED)
diff --git a/karakaze/CMakeLists.txt b/karakaze/CMakeLists.txt
index e9ecd1c2..eb61086a 100644
--- a/karakaze/CMakeLists.txt
+++ b/karakaze/CMakeLists.txt
@@ -15,7 +15,7 @@
  check_distribution()
 
  setup_sysconfdir("${CMAKE_INSTALL_PREFIX}")
- find_package(Python 3           REQUIRED COMPONENTS Interpreter Development)
+ find_package(Python 3           REQUIRED COMPONENTS Interpreter Development.Module)
  find_package(PythonSitePackages REQUIRED)
  find_package(HURRICANE          REQUIRED)
  find_package(CORIOLIS           REQUIRED)
diff --git a/katana/CMakeLists.txt b/katana/CMakeLists.txt
index 3ba565a5..ad288fce 100644
--- a/katana/CMakeLists.txt
+++ b/katana/CMakeLists.txt
@@ -20,7 +20,7 @@
  setup_qt()
  
  find_package(Libexecinfo        REQUIRED)
- find_package(Python 3           REQUIRED COMPONENTS Interpreter Development)
+ find_package(Python 3           REQUIRED COMPONENTS Interpreter Development.Module)
  find_package(PythonSitePackages REQUIRED)
  find_package(LEFDEF             REQUIRED)
  find_package(FLUTE              REQUIRED)
diff --git a/mauka/CMakeLists.txt b/mauka/CMakeLists.txt
index 9e3e2fbe..e63de3fd 100644
--- a/mauka/CMakeLists.txt
+++ b/mauka/CMakeLists.txt
@@ -15,7 +15,7 @@
  setup_boost(program_options)
  setup_qt()
 
- find_package(Python 3           REQUIRED COMPONENTS Interpreter Development)
+ find_package(Python 3           REQUIRED COMPONENTS Interpreter Development.Module)
  find_package(PythonSitePackages REQUIRED)
  find_package(HURRICANE          REQUIRED)
  find_package(CORIOLIS           REQUIRED)
diff --git a/metis/CMakeLists.txt b/metis/CMakeLists.txt
index 0ff95e81..16238519 100644
--- a/metis/CMakeLists.txt
+++ b/metis/CMakeLists.txt
@@ -14,7 +14,7 @@
  set_cmake_policies()
  setup_boost()
  
- find_package(Python 3 REQUIRED COMPONENTS Interpreter Development)
+ find_package(Python 3 REQUIRED COMPONENTS Interpreter Development.Module)
  find_package(PythonSitePackages REQUIRED)
  find_package(HURRICANE REQUIRED)
  find_package(CORIOLIS REQUIRED)
diff --git a/oroshi/CMakeLists.txt b/oroshi/CMakeLists.txt
index 61b35bf0..b22da068 100644
--- a/oroshi/CMakeLists.txt
+++ b/oroshi/CMakeLists.txt
@@ -18,7 +18,7 @@
  if (USE_LIBBFD)
    find_package(Libbfd)
  endif()
- find_package(Python 3             REQUIRED COMPONENTS Interpreter Development)
+ find_package(Python 3             REQUIRED COMPONENTS Interpreter Development.Module)
  find_package(PythonSitePackages   REQUIRED)
  find_package(HURRICANE            REQUIRED)
  find_package(CORIOLIS             REQUIRED)
diff --git a/poetry.lock b/poetry.lock
index adf2e059..eadf4b85 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -33,7 +33,7 @@ test = ["codecov (>=2.0.5)", "coverage (>=4.2)", "flake8 (>=3.0.4)", "path.py (>
 name = "find-libpython"
 version = "0.3.0"
 description = "Finds the libpython associated with your environment, wherever it may be hiding"
-category = "dev"
+category = "main"
 optional = false
 python-versions = "*"
 files = [
@@ -43,5 +43,5 @@ files = [
 
 [metadata]
 lock-version = "2.0"
-python-versions = "^3.6"
-content-hash = "3977d779a407995475d178890d20631837483f241de6836600bb92b3d211766b"
+python-versions = "^3.8"
+content-hash = "abbc1ba1fde22ac8e6b5fc0fe7430c18cad5c97aea6a80ea9283c0b11099c71d"
diff --git a/pyproject.toml b/pyproject.toml
index bfb88842..198a1e2a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,13 +3,14 @@ name = "Coriolis"
 version = "2.5.0"
 description = "Place and Route for semiconductors"
 authors = ["Jean-Paul Chaput <Jean-Paul.Chaput@lip6.fr>"]
-build = "build.py"
+build = "builder.py"
 packages = [
   { include = "Coriolis"}
 ]
 
 [tool.poetry.dependencies]
-python = "^3.6"
+python = "^3.8"
+find-libpython = "^0.3.0"
 
 [tool.poetry.dev-dependencies]
 cmake = ">=3"
@@ -23,10 +24,12 @@ unittests = 'Coriolis:unittests'
 yosys_coriolis = 'Coriolis:yosys_coriolis'
 
 [build-system]
-requires = ["poetry-core", "setuptools", "cmake", "patchelf", "find_libpython"]
+requires = ["poetry-core", "setuptools", "cmake", "patchelf", "find-libpython"]
 build-backend = "poetry.core.masonry.api"
 
 [tool.cibuildwheel.linux]
+skip = ["cp36-*", "cp37-*", "pp*"]
+build-frontend = "build"
 before-all = '''
  yum install -y \
  qt5-qtbase-devel qt5-qtsvg-devel \
@@ -37,3 +40,4 @@ before-all = '''
  python3-devel libxml2-devel \
  qwt-devel
 '''
+build-verbosity=2
diff --git a/stratus1/CMakeLists.txt b/stratus1/CMakeLists.txt
index 4ff8d5ae..fdf8128c 100644
--- a/stratus1/CMakeLists.txt
+++ b/stratus1/CMakeLists.txt
@@ -19,7 +19,7 @@
  cmake_policy(SET CMP0002 OLD)
  setup_sysconfdir("${CMAKE_INSTALL_PREFIX}")
  
- find_package(Python 3 REQUIRED COMPONENTS Interpreter Development)
+ find_package(Python 3 REQUIRED COMPONENTS Interpreter Development.Module)
  find_package(PythonSitePackages REQUIRED)
  find_package(HURRICANE REQUIRED)
  find_package(CORIOLIS REQUIRED)
diff --git a/tutorial/CMakeLists.txt b/tutorial/CMakeLists.txt
index 42ccf5a8..a4c7edd6 100644
--- a/tutorial/CMakeLists.txt
+++ b/tutorial/CMakeLists.txt
@@ -19,7 +19,7 @@
  setup_qt()
  
  find_package(Libexecinfo        REQUIRED)
- find_package(Python 3           REQUIRED COMPONENTS Interpreter Development)
+ find_package(Python 3           REQUIRED COMPONENTS Interpreter Development.Module)
  find_package(PythonSitePackages REQUIRED)
  find_package(LEFDEF             REQUIRED)
  find_package(HURRICANE          REQUIRED)
diff --git a/unicorn/CMakeLists.txt b/unicorn/CMakeLists.txt
index c3aec18d..f796749c 100644
--- a/unicorn/CMakeLists.txt
+++ b/unicorn/CMakeLists.txt
@@ -24,7 +24,7 @@
    find_package(Libbfd)
  endif()
  find_package(BZip2              REQUIRED)
- find_package(Python 3           REQUIRED COMPONENTS Interpreter Development)
+ find_package(Python 3           REQUIRED COMPONENTS Interpreter Development.Module)
  find_package(PythonSitePackages REQUIRED)
  find_package(LEFDEF             REQUIRED)
  find_package(COLOQUINTE)
diff --git a/unittests/CMakeLists.txt b/unittests/CMakeLists.txt
index 4c1d7f7b..85b62a06 100644
--- a/unittests/CMakeLists.txt
+++ b/unittests/CMakeLists.txt
@@ -27,7 +27,7 @@
  endif()
  find_package(Libexecinfo        REQUIRED)
  find_package(BZip2              REQUIRED)
- find_package(Python 3           REQUIRED COMPONENTS Interpreter Development)
+ find_package(Python 3           REQUIRED COMPONENTS Interpreter Development.Module)
  find_package(PythonSitePackages REQUIRED)
  find_package(LEFDEF)
  find_package(HURRICANE          REQUIRED)