diff --git a/README.md b/README.md
index 40fe6c1..7ddef1d 100644
--- a/README.md
+++ b/README.md
@@ -43,7 +43,7 @@ steps:
     uses: pulumi/pulumi-package-publisher@v0.0.6
 ```
 
-Optionally, you may specify language SDKs individually:
+Optionally, you may specify language SDKs individually or in a comma separated list:
 
 ```yaml
 steps:
@@ -51,19 +51,21 @@ steps:
     uses: pulumi/pulumi-package-publisher@0058a106b68d8277f17bbea0cd29b2ff6e671adc
     with:
       sdk: nodejs
-  - name: Publish Java SDK
+  - name: Publish Java and Python SDKs
     uses: pulumi/pulumi-package-publisher@0058a106b68d8277f17bbea0cd29b2ff6e671adc
     with:
-      sdk: java
-  - name: Publish Python SDK
+      sdk: java,python
+  - name: Publish every SDK except .NET
     uses: pulumi/pulumi-package-publisher@0058a106b68d8277f17bbea0cd29b2ff6e671adc
     with:
-      sdk: python
+      sdk: all,!dotnet
 ```
 
 Valid inputs to `with.sdk` are:
 
+- `all` - Equivalent to specifying all supported registries: `python,java,nodejs,dotnet`
 - `python` - Publish to PyPI
 - `java` - Publish to Maven
 - `nodejs` - Publish to npm
 - `dotnet` - Publish to nuget
+- `!${LANG}` - To disable any of the above languages.
diff --git a/action.yml b/action.yml
index 49a84bc..fa54ab9 100644
--- a/action.yml
+++ b/action.yml
@@ -2,10 +2,36 @@ name: 'Pulumi Package publisher'
 description: 'A GitHub Action that publishes provider SDKs'
 inputs:
   sdk:
-    description: The name of the language SDK being published
+    description: |
+      The name of the language SDK being published.
+
+      To enable a single language, specify that language:
+
+          sdk: nodejs
+
+      To enable multiple languages, specify them:
+
+          sdk: nodejs,python
+
+      To enable all languages (the default), specify 'all':
+
+          sdk: all
+
+      To disable only a single language (but enable all others), use:
+
+          sdk: all,!nodejs
+
     required: false
     default: 'all'
 
+# The if: statement for the above is:
+#
+# if: (contains(inputs.sdk, '${LANGUAGE}') || (contains(inputs.sdk, 'all') && !contains(inputs.sdk, '!all'))) && !contains(inputs.sdk, '!${LANGUAGE}')
+#
+# If can be read as:
+#
+#    If (${LANGUAGE} or all (but not !all)) and not !${LANGUAGE}
+
 runs:
   using: "composite"
   steps:
@@ -29,122 +55,34 @@ runs:
         repo: pulumi/pulumictl
     - name: Install Pulumi CLI
       uses: pulumi/action-install-pulumi-cli@v2
-    - name: Setup Node
-      if: inputs.sdk == 'nodejs' || inputs.sdk == 'all'
-      uses: actions/setup-node@v3
-      with:
-        node-version: ${{ env.NODEVERSION }}
-        registry-url: https://registry.npmjs.org
-    - name: Download nodejs SDK
-      if: inputs.sdk == 'nodejs' || inputs.sdk == 'all'
-      uses: actions/download-artifact@v2
-      with:
-        name: nodejs-sdk.tar.gz
-        path: ${{ github.workspace }}/sdk/
-    - name: Uncompress nodejs SDK
-      if: inputs.sdk == 'nodejs' || inputs.sdk == 'all'
-      run: tar -zxf ${{ github.workspace }}/sdk/nodejs.tar.gz -C
-        ${{ github.workspace }}/sdk/nodejs
-      shell: bash
-    - name: Run npm whoami
-      if: inputs.sdk == 'nodejs' || inputs.sdk == 'all'
-      run: npm whoami
-      shell: bash
-      env:
-        NODE_AUTH_TOKEN: ${{ env.NODE_AUTH_TOKEN }}
-    - name: Publish Node
-      if: inputs.sdk == 'nodejs' || inputs.sdk == 'all'
-      run: pulumi package publish-sdk nodejs --path ${{ github.workspace }}/sdk/nodejs/bin
-      shell: bash
-      env:
-        NODE_AUTH_TOKEN: ${{ env.NODE_AUTH_TOKEN }}
-    - name: Setup DotNet
-      if: inputs.sdk == 'dotnet' || inputs.sdk == 'all'
-      uses: actions/setup-dotnet@v3
-      with:
-        dotnet-version: ${{ env.DOTNETVERSION }}
-    - name: Download dotnet SDK
-      if: inputs.sdk == 'dotnet' || inputs.sdk == 'all'
-      uses: actions/download-artifact@v2
-      with:
-        name: dotnet-sdk.tar.gz
-        path: ${{ github.workspace }}/sdk/
-    - name: Uncompress dotnet SDK
-      if: inputs.sdk == 'dotnet' || inputs.sdk == 'all'
-      run: tar -zxf ${{ github.workspace }}/sdk/dotnet.tar.gz -C
-        ${{ github.workspace }}/sdk/dotnet
-      shell: bash
-    - name: Publish dotnet SDK
-      if: inputs.sdk == 'dotnet' || inputs.sdk == 'all'
-      run: find "${{ github.workspace }}/sdk/dotnet/bin/Debug/" -name 'Pulumi.*.nupkg'
-        -exec dotnet nuget push -k "${NUGET_PUBLISH_KEY}" -s https://api.nuget.org/v3/index.json {} \;
-      shell: bash
-    - name: Setup Python
-      if: inputs.sdk == 'python' || inputs.sdk == 'all'
-      uses: actions/setup-python@v2
-      with:
-        python-version: ${{ env.PYTHONVERSION }}
-    - name: Download python SDK
-      if: inputs.sdk == 'python' || inputs.sdk == 'all'
-      uses: actions/download-artifact@v2
-      with:
-        name: python-sdk.tar.gz
-        path: ${{ github.workspace }}/sdk/
-    - name: Uncompress python SDK
-      if: inputs.sdk == 'python' || inputs.sdk == 'all'
-      run: tar -zxf ${{ github.workspace }}/sdk/python.tar.gz -C
-        ${{ github.workspace }}/sdk/python
-      shell: bash
-    - name: Install Twine
-      if: inputs.sdk == 'python' || inputs.sdk == 'all'
-      run: python -m pip install pip twine
-      shell: bash
-    - name: Publish Python SDK
-      if: inputs.sdk == 'python' || inputs.sdk == 'all'
-      run: if [ -n "${PYPI_USERNAME}" ] ;
-        then PYPI_PUBLISH_USERNAME=${PYPI_USERNAME};
-        else PYPI_PUBLISH_USERNAME="pulumi";
-        fi &&
-        echo "Publishing Pip package to pypi as ${PYPI_PUBLISH_USERNAME}:" &&
-        twine upload
-        -u "${PYPI_PUBLISH_USERNAME}" -p "${PYPI_PASSWORD}"
-        "${{ github.workspace }}/sdk/python/bin/dist/*"
-        --skip-existing
-        --verbose
-      shell: bash
-    - name: Setup Java
-      if: inputs.sdk == 'java' || inputs.sdk == 'all'
-      uses: actions/setup-java@v3
-      with:
-        cache: gradle
-        distribution: temurin
-        java-version: ${{ env.JAVAVERSION }}
-    - name: Setup Gradle
-      if: inputs.sdk == 'java' || inputs.sdk == 'all'
-      uses: gradle/gradle-build-action@v2
-      with:
-        gradle-version: "7.6"
-    - name: Download java SDK
-      if: inputs.sdk == 'java' || inputs.sdk == 'all'
-      uses: actions/download-artifact@v2
-      with:
-        name: java-sdk.tar.gz
-        path: ${{ github.workspace}}/sdk/
-    - name: Uncompress java SDK
-      if: inputs.sdk == 'java' || inputs.sdk == 'all'
-      run: tar -zxf ${{github.workspace}}/sdk/java.tar.gz -C
-        ${{github.workspace}}/sdk/java
-      shell: bash
-    - name: Set PACKAGE_VERSION to Env
-      if: inputs.sdk == 'java' || inputs.sdk == 'all'
-      run: echo "PACKAGE_VERSION=$(pulumictl get version --language generic)" >>
-        $GITHUB_ENV
+
+
+    # `uses:` statements do not support expressions
+    # (https://github.com/actions/runner/issues/895), so this is invalid:
+    #
+    #   ${{ github.action_path }}/lang
+    #
+    # This is a problem for nested composite actions, which are unable to specify a
+    # `uses:` relative to the main composite action.
+    #
+    # While they need to be static, they do not need to be resolved. We can work around
+    # the static requirement by specifying a local static path in downstream `uses:`, and
+    # then moving the desired action to the static path at runtime.
+    - name: Setup Language Workflows
+      run: |
+        mkdir ./.pulumi-package-publish
+        cp -r ${{ github.action_path }}/lang ./.pulumi-package-publish/lang
       shell: bash
-    - name: Publish Java SDK
-      if: inputs.sdk == 'java' || inputs.sdk == 'all'
-      continue-on-error: true
-      uses: gradle/gradle-build-action@9b814496b50909128c6a52622b416c5ffa04db49
-      with:
-        arguments: publishToSonatype closeAndReleaseSonatypeStagingRepository
-        build-root-directory: ./sdk/java
-        gradle-version: 7.4.1
+
+    - name: Nodejs - Publish to NPM
+      uses: ./.pulumi-package-publish/lang/nodejs
+      if: (contains(inputs.sdk, 'nodejs') || (contains(inputs.sdk, 'all') && !contains(inputs.sdk, '!all'))) && !contains(inputs.sdk, '!nodejs')
+    - name: .NET - Publish to Nuget
+      if: (contains(inputs.sdk, 'dotnet') || (contains(inputs.sdk, 'all') && !contains(inputs.sdk, '!all'))) && !contains(inputs.sdk, '!dotnet')
+      uses: ./.pulumi-package-publish/lang/dotnet
+    - name: Python - Publish to PyPi
+      if: (contains(inputs.sdk, 'python') || (contains(inputs.sdk, 'all') && !contains(inputs.sdk, '!all'))) && !contains(inputs.sdk, '!python')
+      uses: ./.pulumi-package-publish/lang/python
+    - name: Java - Publish to Maven
+      if: (contains(inputs.sdk, 'java') || (contains(inputs.sdk, 'all') && !contains(inputs.sdk, '!all'))) && !contains(inputs.sdk, '!java')
+      uses: ./.pulumi-package-publish/lang/java
diff --git a/lang/dotnet/action.yml b/lang/dotnet/action.yml
new file mode 100644
index 0000000..78835f9
--- /dev/null
+++ b/lang/dotnet/action.yml
@@ -0,0 +1,23 @@
+name: 'Publish to Nuget'
+description: 'A subcomponent of pulumi-package-publish'
+
+runs:
+  using: "composite"
+  steps:
+    - name: Setup DotNet
+      uses: actions/setup-dotnet@v3
+      with:
+        dotnet-version: ${{ env.DOTNETVERSION }}
+    - name: Download dotnet SDK
+      uses: actions/download-artifact@v2
+      with:
+        name: dotnet-sdk.tar.gz
+        path: ${{ github.workspace }}/sdk/
+    - name: Uncompress dotnet SDK
+      run: tar -zxf ${{ github.workspace }}/sdk/dotnet.tar.gz -C
+        ${{ github.workspace }}/sdk/dotnet
+      shell: bash
+    - name: Publish dotnet SDK
+      run: find "${{ github.workspace }}/sdk/dotnet/bin/Debug/" -name 'Pulumi.*.nupkg'
+        -exec dotnet nuget push -k "${NUGET_PUBLISH_KEY}" -s https://api.nuget.org/v3/index.json {} \;
+      shell: bash
diff --git a/lang/java/action.yml b/lang/java/action.yml
new file mode 100644
index 0000000..3091573
--- /dev/null
+++ b/lang/java/action.yml
@@ -0,0 +1,36 @@
+name: 'Publish to Maven'
+description: 'A subcomponent of pulumi-package-publish'
+
+runs:
+  using: "composite"
+  steps:
+    - name: Setup Java
+      uses: actions/setup-java@v3
+      with:
+        cache: gradle
+        distribution: temurin
+        java-version: ${{ env.JAVAVERSION }}
+    - name: Setup Gradle
+      uses: gradle/gradle-build-action@v2
+      with:
+        gradle-version: "7.6"
+    - name: Download java SDK
+      uses: actions/download-artifact@v2
+      with:
+        name: java-sdk.tar.gz
+        path: ${{ github.workspace}}/sdk/
+    - name: Uncompress java SDK
+      run: tar -zxf ${{github.workspace}}/sdk/java.tar.gz -C
+        ${{github.workspace}}/sdk/java
+      shell: bash
+    - name: Set PACKAGE_VERSION to Env
+      run: echo "PACKAGE_VERSION=$(pulumictl get version --language generic)" >>
+        $GITHUB_ENV
+      shell: bash
+    - name: Publish Java SDK
+      continue-on-error: true
+      uses: gradle/gradle-build-action@9b814496b50909128c6a52622b416c5ffa04db49
+      with:
+        arguments: publishToSonatype closeAndReleaseSonatypeStagingRepository
+        build-root-directory: ./sdk/java
+        gradle-version: 7.4.1
diff --git a/lang/nodejs/action.yml b/lang/nodejs/action.yml
new file mode 100644
index 0000000..ae0b8f3
--- /dev/null
+++ b/lang/nodejs/action.yml
@@ -0,0 +1,30 @@
+name: 'Publish to NPM'
+description: 'A subcomponent of pulumi-package-publish'
+
+runs:
+  using: "composite"
+  steps:
+    - name: Setup Node
+      uses: actions/setup-node@v3
+      with:
+        node-version: ${{ env.NODEVERSION }}
+        registry-url: https://registry.npmjs.org
+    - name: Download nodejs SDK
+      uses: actions/download-artifact@v2
+      with:
+        name: nodejs-sdk.tar.gz
+        path: ${{ github.workspace }}/sdk/
+    - name: Uncompress nodejs SDK
+      run: tar -zxf ${{ github.workspace }}/sdk/nodejs.tar.gz -C
+        ${{ github.workspace }}/sdk/nodejs
+      shell: bash
+    - name: Run npm whoami
+      run: npm whoami
+      shell: bash
+      env:
+        NODE_AUTH_TOKEN: ${{ env.NODE_AUTH_TOKEN }}
+    - name: Publish Node
+      run: pulumi package publish-sdk nodejs --path ${{ github.workspace }}/sdk/nodejs/bin
+      shell: bash
+      env:
+        NODE_AUTH_TOKEN: ${{ env.NODE_AUTH_TOKEN }}
diff --git a/lang/python/action.yml b/lang/python/action.yml
new file mode 100644
index 0000000..f8369a7
--- /dev/null
+++ b/lang/python/action.yml
@@ -0,0 +1,34 @@
+name: 'Publish to PyPi'
+description: 'A subcomponent of pulumi-package-publish'
+
+runs:
+  using: "composite"
+  steps:
+    - name: Setup Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ env.PYTHONVERSION }}
+    - name: Download python SDK
+      uses: actions/download-artifact@v2
+      with:
+        name: python-sdk.tar.gz
+        path: ${{ github.workspace }}/sdk/
+    - name: Uncompress python SDK
+      run: tar -zxf ${{ github.workspace }}/sdk/python.tar.gz -C
+        ${{ github.workspace }}/sdk/python
+      shell: bash
+    - name: Install Twine
+      run: python -m pip install pip twine
+      shell: bash
+    - name: Publish Python SDK
+      run: if [ -n "${PYPI_USERNAME}" ] ;
+        then PYPI_PUBLISH_USERNAME=${PYPI_USERNAME};
+        else PYPI_PUBLISH_USERNAME="pulumi";
+        fi &&
+        echo "Publishing Pip package to pypi as ${PYPI_PUBLISH_USERNAME}:" &&
+        twine upload
+        -u "${PYPI_PUBLISH_USERNAME}" -p "${PYPI_PASSWORD}"
+        "${{ github.workspace }}/sdk/python/bin/dist/*"
+        --skip-existing
+        --verbose
+      shell: bash