Update README to use scipopt conda channel

Author: AntoinePrv

README.rst

@@ -66,29 +66,8 @@ CMake is made available in the ``ecole`` environment created earlier.
 
 SCIP runtime dependency
 ^^^^^^^^^^^^^^^^^^^^^^^
-Head to the `download page <https://scip.zib.de/index.php#download>`_, select version
-7.0.0 and download the ``scipoptsuite-7.0.0.tgz`` file.
-Extract it using
-
-.. code-block:: bash
-
-   tar -xz -f scipoptsuite-7.0.0.tgz
-
-Create a local conda package for SCIP using the recipe provided in this repository.
-
-*Note: "/path/to/scipoptsuite-7.0.0" has to be an absolute path here.*
-
-.. code-block:: bash
-
-   export CONDA_BLD_PATH="${CONDA_PREFIX}/conda-bld"
-   SCIP_DIR="/path/to/scipoptsuite-7.0.0" conda build -c conda-forge .circleci/recipe/scipoptsuite-7.0.0
-
-Install the SCIP package in the ``ecole`` environment
-
-.. code-block:: bash
-
-   conda install -c "file://${CONDA_BLD_PATH}" -c conda-forge scipoptsuite
-
+Scip dependency is resolved from `conda` inside `conda-dev.yaml`.
+No other action are necessary :)
 
 Building
 ^^^^^^^^

conda-dev.yml

@@ -1,6 +1,7 @@
 channels:
-  - defaults
+  - scipopt
   - conda-forge
+  - defaults
 
 dependencies:
   # General convenience
@@ -17,11 +18,15 @@ dependencies:
   - clang-tools>=10
   - conan
   - ccache
+  # C++ runtime dependency
+  - scip
   # Build time Python dependencies
   - python>=3.6
   - pybind11
   - numpy>=1.4
   - xtensor-python
+  # Python runtime dependency
+  - pyscipopt >= 3.0.1  # optional
   # Python dev tools
   - ipython
   - pytest