diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index b57d11f..45ced31 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -87,6 +87,5 @@ jobs:
       platform: ${{ matrix.platform }}
       target-platform: ${{ matrix.target-platform }}
       compiler-nix-name: ${{ matrix.compiler-nix-name }}
-      minimal: ${{ matrix.variant == '-minimal' }}
-      iog: ${{ matrix.iog == '-iog' }}
-      iog-full: ${{ matrix.iog == '-iog-full' }}
+      variant: ${{ matrix.variant }}
+      iog: ${{ matrix.iog }}
diff --git a/.github/workflows/wait-and-upload.yml b/.github/workflows/wait-and-upload.yml
index 7cf8aa5..4b6f67e 100644
--- a/.github/workflows/wait-and-upload.yml
+++ b/.github/workflows/wait-and-upload.yml
@@ -15,23 +15,19 @@ on:
         required: true
         description: 'compiler name in nix format. e.g. ghc96'
         type: string
-      minimal:
-        description: 'without hls, hlint, ...'
-        type: boolean
-        default: true
+      variant:
+        description: 'if set to `minimal` without hls, hlint, ...'
+        type: string
+        default: ''
       iog:
-        description: 'with iog libs: libsodium, libsecp256k1, libblst, ...'
-        type: boolean # FIXME: this should rather be a 'string' that could be set to 'full' ...
-        default: false
-      iog-full:
-        description: 'with full iog libs: libsodium, libsecp256k1, libblst, postgresql, R, ...'
-        type: boolean
-        default: false
+        description: 'if set to `-iog` with libs `libsodium`, `libsecp256k1`, `libblst`, ... and if set to `-iog-full` adds `postgresql` and `R`'
+        type: string
+        default: ''
 
 env:
   REGISTRY: ghcr.io
   IMAGE_NAME: ${{ github.repository }}
-  DEV_SHELL: ${{ inputs.platform }}.${{ inputs.compiler-nix-name }}${{ inputs.target-platform }}${{ inputs.minimal && '-minimal' || '' }}${{ (inputs.iog-full && '-iog-full') || (inputs.iog && '-iog') || ''}}-env
+  DEV_SHELL: ${{ inputs.platform }}.${{ inputs.compiler-nix-name }}${{ inputs.target-platform }}${{ inputs.variant }}${{ inputs.iog }}-env
   DEFAULT_TAG: latest
   GH_TOKEN: ${{ github.token }}
 
@@ -120,7 +116,7 @@ jobs:
     # Likely, we consider using `-iog` as the default and do not generate other images.
     # Then the user choices left would be between native, `-windows` or `-js` target platforms,
     # and the GHC version (currently `ghc810` and `ghc96`).
-    if: ${{ contains(fromJSON('["x86_64-linux", "aarch64-linux"]'), inputs.platform) && contains(fromJson('["","-windows","-js"]'), inputs.target-platform) && contains(fromJson('["ghc810","ghc96"]'), inputs.compiler-nix-name) && !inputs.minimal && inputs.iog && !inputs.iog-full }}
+    if: ${{ contains(fromJSON('["x86_64-linux", "aarch64-linux"]'), inputs.platform) && contains(fromJson('["","-windows","-js"]'), inputs.target-platform) && contains(fromJson('["ghc810","ghc96"]'), inputs.compiler-nix-name) && inputs.variant == '' && inputs.iog == '-iog' }}
     steps:
       - name: Checkout repository
         uses: actions/checkout@v3
@@ -137,42 +133,14 @@ jobs:
         with:
           context: .
           push: true
-          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ inputs.platform }}.${{ inputs.compiler-nix-name }}${{ inputs.target-platform }}${{ (inputs.iog-full && '-iog-full') || (inputs.iog && '-iog') }}
+          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ inputs.platform }}.${{ inputs.compiler-nix-name }}${{ inputs.target-platform }}${{ inputs.variant }}${{ inputs.iog }}
           build-args: |
             PLATFORM=${{ inputs.platform }}
             TARGET_PLATFORM=${{ inputs.target-platform }}
             COMPILER_NIX_NAME=${{ inputs.compiler-nix-name }}
-            MINIMAL=${{ inputs.minimal }}
+            VARIANT=${{ inputs.variant }}
             IOG=${{ inputs.iog }}
-            IOG_FULL=${{ inputs.iog-full }}
-
-  codespace-download:
-    env:
-      IMAGE_NAME: input-output-hk/devx-devcontainer
-    needs: codespace-upload
-    permissions:
-      packages: write
-    runs-on: ubuntu-latest
-    # We want a GitHub Codespace image for each combination of devx developer shell option.
-    # But, since the purpose of GitHub Codespace is to serve a complete development environment,
-    # the user is likely to always expect HLS (I don't see the point otherwise).
-    # Therefore, it doesn't seem useful to build an image on the `-minimal` flavor (without HLS),
-    # or the `-static` one (especially since the latter currently requires `-minimal` to work).
-    # Likely, we consider using `-iog` as the default and do not generate other images.
-    # Then the user choices left would be between native, `-windows` or `-js` target platforms,
-    # and the GHC version (currently `ghc810` and `ghc96`).
-    if: ${{ contains(fromJSON('["x86_64-linux", "aarch64-linux"]'), inputs.platform) && contains(fromJson('["","-windows","-js"]'), inputs.target-platform) && contains(fromJson('["ghc810","ghc96"]'), inputs.compiler-nix-name) && !inputs.minimal && inputs.iog }}
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v3
-
-      - name: Log in to the Container registry
-        uses: docker/login-action@v2.1.0
-        with:
-          registry: ${{ env.REGISTRY }}
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Run test command inside the Dev Container
-        run: docker run --rm ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ inputs.platform }}.${{ inputs.compiler-nix-name }}${{ inputs.target-platform }} \
+        run: docker run --rm ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ inputs.platform }}.${{ inputs.compiler-nix-name }}${{ inputs.target-platform }}${{ inputs.variant }}${{ inputs.iog }} \
              /bin/bash -c "cabal update && cabal unpack hello && cd hello-* && cabal build"
diff --git a/Dockerfile b/Dockerfile
index 3f085d3..c0c7e34 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,20 +9,15 @@ WORKDIR /workspaces
 ARG PLATFORM="x86_64-linux"
 ARG TARGET_PLATFORM=""
 ARG COMPILER_NIX_NAME="ghc96"
-ARG MINIMAL="false"
-ARG IOG="true"
-ARG IOG_FULL="false"
+ARG VARIANT=""
+ARG IOG="-iog"
 
 RUN DEBIAN_FRONTEND=noninteractive \
  && apt-get update \
  && apt-get -y install curl gh git grep jq nix rsync zstd \
  && curl -L https://raw.githubusercontent.com/input-output-hk/actions/latest/devx/support/fetch-docker.sh -o fetch-docker.sh \
  && chmod +x fetch-docker.sh \
- && SUFFIX='' \
- && if [ "$MINIMAL" = "true" ]; then SUFFIX="${SUFFIX}-minimal"; fi \
- && if [ "$IOG" = "true" ]; then SUFFIX="${SUFFIX}-iog"; fi \
- && if [ "$IOG_FULL" = "true" ]; then SUFFIX="${SUFFIX}-full"; fi \
- && ./fetch-docker.sh input-output-hk/devx $PLATFORM.$COMPILER_NIX_NAME$TARGET_PLATFORM${SUFFIX}-env | zstd -d | nix-store --import | tee store-paths.txt
+ && ./fetch-docker.sh input-output-hk/devx $PLATFORM.$COMPILER_NIX_NAME$TARGET_PLATFORM$VARIANT$IOG-env | zstd -d | nix-store --import | tee store-paths.txt
 
 RUN cat <<EOF >> $HOME/.bashrc
 source $(grep -m 1 -e '-env.sh$' store-paths.txt)