diff --git a/env/environment.yml b/env/environment.yml
new file mode 100644
index 000000000..3c4cbe383
--- /dev/null
+++ b/env/environment.yml
@@ -0,0 +1,62 @@
+channels:
+  - i4ds
+  - nvidia/label/cuda-11.7.0
+  - conda-forge
+  - nodefaults
+dependencies:
+# Set dependencies and it's constraints in the package they belong. Otherwise you just cause chaos for future builds.
+# Just Karabo's direct dependencies and Karabo constraints (from our code) should be handled here.
+# Dependencies with unstable APIs (this usually includes Karabo-Feedstock) should be fixed.
+# Don't fix anything regarding build-string (except mpi) here. There's a lot you could do wrong.
+#
+# IMPORTANT: If you add or remove dependencies, make sure to adjust conda/meta.yaml as well.
+  - python                  >=3.9,<3.11
+  - aratmospy               =1.0.0
+  - astropy
+  - bdsf                    =1.10.2
+  - bluebild                =0.1.0
+  - casacore
+  - cuda-cudart             =11.7
+  - cuda-version            =11.7
+  - dask                    =2022.12.1
+  - dask-mpi
+  - distributed
+  - eidos                   =1.1.0
+  - healpy
+  - h5py                    =*=mpi_mpich*
+  - ipython
+  - katbeam                 =0.1.0
+  - libcufft
+  - matplotlib
+  - montagepy               =6.0.0
+  - mpi4py
+  - mpich
+  - nbformat
+  - nbconvert
+  - numpy                   >=1.21, !=1.24.0, <2.0  # upper-bounded because see issue #584
+  - oskarpy                 =2.8.3
+  - packaging
+  - pandas
+  - psutil
+  - rascil                  =1.0.0
+  - reproject               >=0.9,<=10.0
+  - requests
+  - rfc3986                 >=2.0.0
+  # scipy upper bound should not be required, because it is also present in bipp (<1.14) and tools21cm (<1.15).
+  # However, the inner workings of conda are beyond comprehension, and if this bound is removed,
+  # healpy 1.15.0 will try to import scipy.integrate.trapz causing an error
+  - scipy                   >=1.10.1,<1.14
+  - ska-gridder-nifty-cuda  =0.3.0
+  - ska-sdp-datamodels      =0.1.3
+  - ska-sdp-func-python     =0.1.4
+  - tools21cm               =2.0.3
+  - wsclean
+  - xarray                  >=2022.11
+  # transversal dependencies which we need to reference to get mpi-wheels
+  # casacore hast just no-mpi & open-mpi, but no mpich-wheel
+  - conda-forge::fftw       =*=mpi_mpich*  # oskarpy(oskar(casacore)), tools21cm, bluebild(finufft) -> from conda-forge to ignore channel-prio & not take our legacy fftw-wheel
+  # exclude buggy versions of other tools
+  - setuptools              !=71.0.0, !=71.0.1, !=71.0.2  # buggy with `importlib_metadata`
+  # for MWA measurement set, uvfits, hdf5, mir support (choc-234)
+  # this [casa] syntax won't work with mamba!
+  - pyuvdata[casa]          >=2.4,<3
diff --git a/environment.yaml b/environment.yaml
index 7bb66dba3..3c4cbe383 100644
--- a/environment.yaml
+++ b/environment.yaml
@@ -2,6 +2,7 @@ channels:
   - i4ds
   - nvidia/label/cuda-11.7.0
   - conda-forge
+  - nodefaults
 dependencies:
 # Set dependencies and it's constraints in the package they belong. Otherwise you just cause chaos for future builds.
 # Just Karabo's direct dependencies and Karabo constraints (from our code) should be handled here.