requirements.txt: Zarr, cartopy and dask[complete] cannot be installed via pip...

requirements.txt: Zarr, cartopy and dask[complete] cannot be installed via pip but must be installed via mamba (or something else).

requirements.txt

@@ -2,7 +2,7 @@ numpy
 matplotlib
 netcdf4
 xarray
-zarr
+#zarr
 pandas
 cmocean
 scipy
@@ -12,5 +12,5 @@ jupytext
 pytest
 healpy
 cftime
-cartopy
-dask[complete]
+#cartopy
+#dask[complete]