Debugging conda mamba env setup pt 7

Trying three different ways of installing mamba/micromamba,
in the hope that at least one of them currenlty works.
This is such a shitshow.

.github/workflows/ci.yaml

@@ -42,10 +42,12 @@ jobs:
  os:
  - ubuntu-latest
  # - macos-latest
- # - ubuntu-22.04
  # - ubuntu-20.04
+ # - ubuntu-22.04
+ # - ubuntu-24.04
  # - macos-12
- # - macos-11
+ # - macos-13
+ # - macos-14
 
  # Test cases as listed in test/cases/*.txt
  # We update them automatically when running the test/run.sh script, so that each time
@@ -104,13 +106,15 @@ jobs:
  # For now, we just test the base case to see if it's generally working.
  # This repeats one of the Ubuntu runs for the base case, but that's okay
  # to keep it future proof when the default ubuntu-latest changes.
+ - os: ubuntu-20.04
+ case: base
  - os: ubuntu-22.04
  case: base
- - os: ubuntu-20.04
+ - os: ubuntu-24.04
  case: base
  - os: macos-12
  case: base
- - os: macos-11
+ - os: macos-13
  case: base
 
  # -------------------------------------------------------
@@ -122,27 +126,30 @@ jobs:
  uses: actions/checkout@v4
 
  - name: Setup Conda
- uses: conda-incubator/setup-miniconda@v3.0.3
+ uses: conda-incubator/setup-miniconda@v3.0.4
  with:
  # We need mamba here already, otherwise we run into
  # https://github.com/conda-incubator/setup-miniconda/issues/262
- # mamba-version: "*"
- # channels: conda-forge
- # We need to replace the above, at least for now, due to instabilities in the action,
+ mamba-version: "*"
+ python-version: 3.12
+ channels: conda-forge,defaults
+ channel-priority: true
+ use-mamba: true
+ environment-file: envs/grenepipe.yaml
+ activate-environment: grenepipe
+
+ # We might need to replace the above, at least for now, due to instabilities in the action,
  # see https://github.com/conda-incubator/setup-miniconda/issues/274#issue-1531425010
  # If that changes again in the future, also change it below in the other jobs.
  # miniforge-variant: Mambaforge
- miniforge-version: latest
+ # miniforge-version: latest
  # New workaround suggestion:
  # https://github.com/conda-incubator/setup-miniconda/issues/292#issuecomment-1767669652
  # Why is this stuff so broken all the time?
- use-mamba: true
- channels: conda-forge
- environment-file: envs/grenepipe.yaml
- activate-environment: grenepipe
 
  # Manually create the conda env.
- # Not needed at the moment, as the above setup works fine. Keeping this here for reference.
+ # Not needed at the moment, as the above setup works (if it works).
+ # Keeping this here for reference.
  # - name: Install Conda Env
  # shell: bash -el {0}
  # run: |
@@ -223,10 +230,10 @@ jobs:
  # mamba-version: "*"
  # channels: conda-forge
  # Need to use a different setup to get mamba to work, see above.
- # miniforge-variant: Mambaforge
+ miniforge-variant: Mambaforge
  miniforge-version: latest
  use-mamba: true
- channels: conda-forge
+ channels: conda-forge,defaults
  environment-file: envs/grenepipe.yaml
  activate-environment: grenepipe
 
@@ -266,16 +273,19 @@ jobs:
 
  matrix:
  os:
- - ubuntu-22.04
  - ubuntu-20.04
+ - ubuntu-22.04
+ - ubuntu-24.04
  - macos-12
- - macos-11
+ - macos-13
+ - macos-14
 
  installer:
  # Conda is just waaaay to slow... some runs even exceed the GitHub Actions
  # max runtime of 6h, so we have to deactivate it for now.
  # - conda
  - mamba
+ - micromamba
 
  # -------------------------------------------------------
  # Steps
@@ -286,19 +296,18 @@ jobs:
  uses: actions/checkout@v4
 
  - name: Setup Conda
- uses: conda-incubator/setup-miniconda@v3.0.3
+ uses: mamba-org/setup-micromamba@v1.9.0
  with:
- # mamba-version: "*"
- # channels: conda-forge
- # Need to use a different setup now to get mamba to work, see above.
- # miniforge-variant: Mambaforge
- miniforge-version: latest
- use-mamba: true
- channels: conda-forge
+ # Trying another installer, see if that one finally works...
+ # Any version from https://github.com/mamba-org/micromamba-releases
+ micromamba-version: '1.5.8-0'
  environment-file: envs/grenepipe.yaml
- activate-environment: grenepipe
+ environment-name: grenepipe
+ init-shell: bash
+ post-cleanup: 'all'
 
  - name: Install Envs
+ shell: bash -el {0}
  run: |
  cd envs
  for env in `ls *.yaml` ; do