Prevent failing when strict channel priority is set (#74)

When strict channel priority is being set, it seems specifying
conda-forge first prevents the installation to work, because it tries
to pull arch packages from conda-forge

Author: martinRenou

jupyterlite_xeus/add_on.py

@@ -143,7 +143,7 @@ def create_prefix(self):
                 env_name=env_name,
                 root_prefix=root_prefix,
                 specs=["xeus-python"],
-                channels=["conda-forge", "https://repo.mamba.pm/emscripten-forge"],
+                channels=["https://repo.mamba.pm/emscripten-forge", "conda-forge"],
             )
 
     def copy_kernels_from_prefix(self):

tests/environment-1.yml

@@ -1,7 +1,4 @@
 name: xeus-python-kernel-1
-channels:
-  - https://repo.mamba.pm/emscripten-forge
-  - conda-forge
 dependencies:
   - xeus-python
   - xeus-lua

tests/environment-2.yml

@@ -1,7 +1,4 @@
 name: xeus-python-kernel-2
-channels:
-  - https://repo.mamba.pm/emscripten-forge
-  - conda-forge
 dependencies:
   - xeus-python
   - pip:

tests/test_package/environment-3.yml

@@ -1,7 +1,4 @@
 name: xeus-python-kernel-3
-channels:
-  - https://repo.mamba.pm/emscripten-forge
-  - conda-forge
 dependencies:
   - xeus-python
   - numpy