split conda and pip environement building

environment.yml

+name: envAITA
+channels:
+  - conda-forge
+  - defaults
+dependencies:
+  - python
+  - jupyter-book
+  - matplotlib
+  - numpy
+  - xarray
+  - scikit-learn
+  - scikit-image
+  - pip
+  - pip:
+    - -r requirements.txt

requirements.txt

 git+https://github.com/ThomasChauve/xarray_uvecs@main#egg=xarrayuvecs
 git+https://github.com/ThomasChauve/xarray_aita@main#egg=xarrayaita
-jupyter-book
-matplotlib
-numpy
-scikit-learn
-scikit-image
-xarray