How to Install Matplotlib using Conda.jl in Julia-1.7.3

[glanzkaiser]

I was having a trouble of plotting with:

using Plots
pyplot()

I create a folder to run my environment when I cd to that folder and type:

julia --project="."

Then I check my package status with ] st:

Status ~/LasthrimProjection/ijuliaenv/Project.toml
[8f4d0f93] Conda v1.7.0
[438e738f] PyCall v1.93.1
[d330b81b] PyPlot v2.10.0

I try this code :

using Plots
pyplot()

x=range(-2,stop=2,length=100)
y=range(sqrt(2),stop=2,length=100)
f(x,y) = x*y-x-y+1
plot(x,y,f,st=:surface,camera=(-30,30))

I get this warning (I already build PyPlot and PyCall multiple times):

Warning: You are using Matplotlib 3.3.4, which is no longer
│ officialy supported by the Plots community. To ensure smooth Plots.jl
│ integration update your Matplotlib library to a version >= 3.4.0
│
│ If you have used Conda.jl to install PyPlot (default installation),
│ upgrade your matplotlib via Conda.jl and rebuild the PyPlot.
│
│ If you are not sure, here are the default instructions:
│
│ In Julia REPL:
│ │ import Pkg; │ Pkg.add("Conda") │ import Conda │ Conda.update() │ Pkg.build("PyPlot") │
│
└ @ Plots /home/browni/.julia/packages/Plots/SkUg1/src/backends/pyplot.jl:29

**PyError ($(Expr(:escape, :(ccall(#= /home/browni/.julia/packages/PyCall/7a7w0/src/pyfncall.jl:43 =# @pysym(:PyObject_Call), PyPtr, (PyPtr, PyPtr, PyPtr), o, pyargsptr, kw))))) <class 'AttributeError'>
AttributeError("'Text' object has no property 'math_fontfamily'",)
File "/home/browni/.local/lib/python3.6/site-packages/matplotlib/colorbar.py", line 761, in set_label
self._set_label()
File "/home/browni/.local/lib/python3.6/site-packages/matplotlib/colorbar.py", line 731, in _set_label
self.ax.set_ylabel(self._label, **self._labelkw)
File "/home/browni/.local/lib/python3.6/site-packages/matplotlib/axes/_axes.py", line 300, in set_ylabel
return self.yaxis.set_label_text(ylabel, fontdict, kwargs)
File "/home/browni/.local/lib/python3.6/site-packages/matplotlib/axis.py", line 1566, in set_label_text
self.label.update(kwargs)
File "/home/browni/.local/lib/python3.6/site-packages/matplotlib/text.py", line 179, in update
super().update(kwargs)
File "/home/browni/.local/lib/python3.6/site-packages/matplotlib/artist.py", line 996, in update
raise AttributeError(f"{type(self).name!r} object "

If I use Jupyter Notebook with Python kernel and I do :

pip install matplotlib

I get matplotlib-3.5.2, it is installed at /home/browni/.julia/conda/3/lib/python3.9/site-packages.

The problem still persists to plot with pyplot().

Hopefully someone can help me here. Why would PyError look for python3.6 (python from system instead of Python inside Conda inside Julia?)

[glanzkaiser]

Solved :

The problem is my environment is looking or using the wrong Python.

Thus, I need to set Python Env to Python in Conda.jl, then set the Conda environment variable so I can use new matplotlib for pyplot() backend: