fix: Revert to toml setuptool format as flit does not allow empty mod…

…ule.

README.md

@@ -1,4 +1,4 @@
-[![Build Status](https://github.com/dbbs-lab/bsb/actions/workflows/build.yml/badge.svg)](https://github.com/dbbs-lab/bsb/actions/workflows/build.yml)
+[![Build Status](https://github.com/dbbs-lab/bsb/actions/workflows/main.yml/badge.svg)](https://github.com/dbbs-lab/bsb/actions/workflows/main.yml)
 # Brain Scaffold Builder suite
 Developed by the Department of Brain and Behavioral Sciences at the University of Pavia, 
 the Brain Scaffold Builder (BSB) is a component framework for neural modelling, which focuses on component 

pyproject.toml

@@ -1,6 +1,6 @@
 [build-system]
-requires = ["flit_core >=3.2,<4"]
-build-backend = "flit_core.buildapi"
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"
 
 [project]
 name = "bsb"
@@ -11,7 +11,7 @@ readme = "README.md"
 license = { file = "LICENSE" }
 classifiers = ["License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)"]
 requires-python = ">=3.9"
-dynamic = ["version"]
+version = "4.3.0"
 dependencies = [
     "bsb-core~=4.5.3",
     "bsb-json~=4.2.1",
@@ -31,6 +31,8 @@ Documentation = "https://bsb.readthedocs.io/"
 "Bug Tracker" = "https://github.com/dbbs-lab/bsb/issues/"
 "Source Code" = "https://github.com/dbbs-lab/bsb/"
 
+[tool.setuptools]
+packages = []
 [tool.bumpversion]
 current_version = "4.3.0"
 parse = "(?P<major>\\d+)\\.(?P<minor>\\d+)\\.(?P<patch>\\d+)"