Minor Channel refactoring #368

Job	Run time
Mamba tests (ubuntu-latest, Release, 3.8)	12m 29s
libmamba tests (ubuntu-latest, Release)	8m 35s
Mamba tests (ubuntu-latest, Debug, 3.8)	15m 14s
libmamba tests (ubuntu-latest, Debug)	10m 32s
Micromamba integration tests (ubuntu-latest, Release)	26m 48s
Mamba tests (macos-latest, Release, 3.8)	21m 43s
libmamba tests (macos-latest, Release)	9m 26s
Micromamba integration tests (ubuntu-latest, Debug)	34m 25s
Mamba tests (macos-latest, Debug, 3.8)	23m 10s
libmamba tests (macos-latest, Debug)	9m 41s
Micromamba integration tests (macos-latest, Release)	46m 7s
Micromamba integration tests (macos-latest, Debug)	50m 3s
	4h 28m 13s

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