git clone https://git.libre-soc.org/git/soc.git
cd nmigen
-python3 setup.py install
+python3 setup.py develop
cd ../nmutil
-python3 setup.py install
+python3 setup.py develop
cd ../ieee754fpu
git submodule update --init --recursive
-python3 setup.py install
+python3 setup.py develop
cd ../nmigen-soc
-python3 setup.py install
+python3 setup.py develop
cd ../soc
make gitupdate
python3 setup.py develop