Installing matplotlib in a fenicsproject environment (on PyCharm)

Hello,

I’m trying to install matplotlib (and assimulo) on PyCharm with a fenicsproject environment (installed with anaconda3). When I try to install matplotlib, I have the following errors, do you know them ?

Package icu conflicts for:
boost-cpp -> libboost==1.67.0=h46d08c1_4 -> icu[version=’>=58.2,<59.0a0’]
boost-cpp -> icu[version=’>=64.2,<65.0a0’]
icu
fenics -> fenics-dolfin==2019.1.0=py37h2a49381_4 -> fenics-libdolfin==2019.1.0=h9041177_4 -> boost-cpp[version=’>=1.70.0,<1.70.1.0a0’] -> icu[version=’>=64.2,<65.0a0’]
matplotlib -> icu[version=’>=58.2,<59.0a0’]
fenics-libdolfin -> boost-cpp[version=’>=1.70.0,<1.70.1.0a0’] -> icu[version=’>=64.2,<65.0a0’]
fenics-dolfin -> fenics-libdolfin==2019.1.0=h9041177_4 -> boost-cpp[version=’>=1.70.0,<1.70.1.0a0’] -> icu[version=’>=64.2,<65.0a0’]

The executed commands were :

/home/loujac/anaconda3/bin/conda install -p
/home/loujac/anaconda3/envs/fenicsproject matplotlib -y

Have you ever seen this problem ?

Thanks a lot for your help !