chore: release nightlies from of release branch (#12181)

* chore: release nightlies from of release branch

in preperation for the new release cycle strategy we will move the nightly to be run off the latest release branch.

One caveat worth documenting: When we create the release branch we need to bump the verions for base and main immediately or else the ngihtly will run off the branch but will use a preveious release tag

I also do not know how to deal with `merge-hash-history-to-main` in this case

* chore: address valid code rabbit comments

add clear error when branch does not exist
make sure valid inputs is respected in the rest of the jobs/steps
release_nightly.yml now uses nightly_tag_release instead of the old nightly_tag_main

.github/workflows/nightly_build.yml

@@ -49,9 +49,30 @@ jobs:
         run: |
           echo "Cannot skip tests while push_to_registry is true."
           exit 1
+  resolve-release-branch:
+    runs-on: ubuntu-latest
+    outputs:
+      branch: ${{ steps.get_branch.outputs.branch }}
+    steps:
+      - name: Find latest release branch
+        id: get_branch
+        run: |
+          git ls-remote --heads https://github.com/${{ github.repository }} 'refs/heads/release-*' \
+          | awk '{print $2}' \
+          | sed 's|refs/heads/||' \
+          | sort -V \
+          | tail -n 1 > branch.txt
 
+          BRANCH=$(cat branch.txt)
+          if [ -z "$BRANCH" ]; then
+            echo "No release-* branch found in ${{ github.repository }}"
+            exit 1
+          fi
+           echo "branch=$BRANCH" >> $GITHUB_OUTPUT
+           echo "Using release branch: $BRANCH"
   create-nightly-tag:
     if: github.repository == 'langflow-ai/langflow'
+    needs: [validate-inputs, resolve-release-branch]
     runs-on: ubuntu-latest
     defaults:
       run:
@@ -60,13 +81,14 @@ jobs:
       # Required to create tag
       contents: write
     outputs:
-      main_tag: ${{ steps.generate_main_tag.outputs.main_tag }}
+      release_tag: ${{ steps.generate_release_tag.outputs.release_tag }}
       base_tag: ${{ steps.set_base_tag.outputs.base_tag }}
       lfx_tag: ${{ steps.generate_lfx_tag.outputs.lfx_tag }}
     steps:
       - name: Checkout code
         uses: actions/checkout@v6
         with:
+          ref: ${{ needs.resolve-release-branch.outputs.branch }}
           persist-credentials: true
       - name: "Setup Environment"
         uses: astral-sh/setup-uv@v6
@@ -79,20 +101,20 @@ jobs:
         run: uv sync
 
       - name: Generate main nightly tag
-        id: generate_main_tag
+        id: generate_release_tag
         run: |
           # NOTE: This outputs the tag with the `v` prefix.
-          MAIN_TAG="$(uv run ./scripts/ci/pypi_nightly_tag.py main)"
-          echo "main_tag=$MAIN_TAG" >> $GITHUB_OUTPUT
-          echo "main_tag=$MAIN_TAG"
+          RELEASE_TAG="$(uv run ./scripts/ci/pypi_nightly_tag.py main)"
+          echo "release_tag=$RELEASE_TAG" >> $GITHUB_OUTPUT
+          echo "release_tag=$RELEASE_TAG"
 
       - name: Delete existing tag if it exists
-        id: check_main_tag
+        id: check_release_tag
         run: |
           git fetch --tags
-          git tag -d ${{ steps.generate_main_tag.outputs.main_tag }} || true
-          git push --delete origin ${{ steps.generate_main_tag.outputs.main_tag }} || true
-          echo "main_tag_exists=false" >> $GITHUB_OUTPUT
+          git tag -d ${{ steps.generate_release_tag.outputs.release_tag }} || true
+          git push --delete origin ${{ steps.generate_release_tag.outputs.release_tag }} || true
+          echo "release_tag_exists=false" >> $GITHUB_OUTPUT
 
       - name: Generate base nightly tag
         id: generate_base_tag
@@ -118,13 +140,13 @@ jobs:
           git config --global user.email "bot-nightly-builds@langflow.org"
           git config --global user.name "Langflow Bot"
 
-          MAIN_TAG="${{ steps.generate_main_tag.outputs.main_tag }}"
+          RELEASE_TAG="${{ steps.generate_release_tag.outputs.release_tag }}"
           BASE_TAG="${{ steps.generate_base_tag.outputs.base_tag }}"
           LFX_TAG="${{ steps.generate_lfx_tag.outputs.lfx_tag }}"
           echo "Updating LFX project version to $LFX_TAG"
           uv run ./scripts/ci/update_lfx_version.py $LFX_TAG
-          echo "Updating base project version to $BASE_TAG and updating main project version to $MAIN_TAG"
-          uv run --no-sync ./scripts/ci/update_pyproject_combined.py main $MAIN_TAG $BASE_TAG $LFX_TAG
+          echo "Updating base project version to $BASE_TAG and updating main project version to $RELEASE_TAG"
+          uv run --no-sync ./scripts/ci/update_pyproject_combined.py main $RELEASE_TAG $BASE_TAG $LFX_TAG
 
           uv lock
           cd src/backend/base && uv lock && cd ../../..
@@ -133,14 +155,14 @@ jobs:
           git add pyproject.toml src/backend/base/pyproject.toml src/lfx/pyproject.toml uv.lock src/backend/base/uv.lock
           git commit -m "Update version and project name"
 
-          echo "Tagging main with $MAIN_TAG"
-          if ! git tag -a $MAIN_TAG -m "Langflow nightly $MAIN_TAG"; then
+          echo "Tagging main with $RELEASE_TAG"
+          if ! git tag -a $RELEASE_TAG -m "Langflow nightly $RELEASE_TAG"; then
             echo "Tag creation failed. Exiting the workflow."
             exit 1
           fi
 
-          echo "Pushing main tag $MAIN_TAG"
-          if ! git push origin $MAIN_TAG; then
+          echo "Pushing main tag $RELEASE_TAG"
+          if ! git push origin $RELEASE_TAG; then
             echo "Tag push failed. Check if the tag already exists. Exiting the workflow."
             exit 1
           fi
@@ -149,7 +171,8 @@ jobs:
       - name: Checkout main nightly tag
         uses: actions/checkout@v6
         with:
-          ref: ${{ steps.generate_main_tag.outputs.main_tag }}
+          ref: ${{ steps.generate_release_tag.outputs.release_tag }}
+          persist-credentials: true
 
       - name: Retrieve Base Tag
         id: retrieve_base_tag
@@ -217,14 +240,15 @@ jobs:
   release-nightly-build:
     if: github.repository == 'langflow-ai/langflow' && always() && needs.frontend-tests.result != 'failure' && needs.backend-unit-tests.result != 'failure'
     name: Run Nightly Langflow Build
-    needs: [create-nightly-tag, frontend-tests, backend-unit-tests]
+    needs:
+      [validate-inputs, create-nightly-tag, frontend-tests, backend-unit-tests]
     uses: ./.github/workflows/release_nightly.yml
     with:
       build_docker_base: true
       build_docker_main: true
       build_docker_ep: true
       build_lfx: true
-      nightly_tag_main: ${{ needs.create-nightly-tag.outputs.main_tag }}
+      nightly_tag_release: ${{ needs.create-nightly-tag.outputs.release_tag }}
       nightly_tag_base: ${{ needs.create-nightly-tag.outputs.base_tag }}
       nightly_tag_lfx: ${{ needs.create-nightly-tag.outputs.lfx_tag }}
       # When triggered by schedule, inputs.push_to_registry is not set, so default to true

.github/workflows/release_nightly.yml

@@ -24,7 +24,7 @@ on:
         required: false
         type: boolean
         default: false
-      nightly_tag_main:
+      nightly_tag_release:
         description: "Tag for the nightly main build"
         required: true
         type: string
@@ -60,7 +60,7 @@ jobs:
       - name: Check out the code at a specific ref
         uses: actions/checkout@v6
         with:
-          ref: ${{ inputs.nightly_tag_main }}
+          ref: ${{ inputs.nightly_tag_release }}
           persist-credentials: true
       - name: "Setup Environment"
         uses: astral-sh/setup-uv@v6
@@ -126,7 +126,7 @@ jobs:
       - name: Check out the code at a specific ref
         uses: actions/checkout@v6
         with:
-          ref: ${{ inputs.nightly_tag_main }}
+          ref: ${{ inputs.nightly_tag_release }}
           persist-credentials: true
       - name: "Setup Environment"
         uses: astral-sh/setup-uv@v6
@@ -223,7 +223,7 @@ jobs:
       - name: Check out the code at a specific ref
         uses: actions/checkout@v6
         with:
-          ref: ${{ inputs.nightly_tag_main}}
+          ref: ${{ inputs.nightly_tag_release}}
           persist-credentials: true
       - name: "Setup Environment"
         uses: astral-sh/setup-uv@v6
@@ -269,8 +269,8 @@ jobs:
             echo "Name $name does not match langflow-nightly. Exiting the workflow."
             exit 1
           fi
-          if [ "$version" != "${{ inputs.nightly_tag_main }}" ]; then
-            echo "Version $version does not match nightly tag ${{ inputs.nightly_tag_main }}. Exiting the workflow."
+          if [ "$version" != "${{ inputs.nightly_tag_release }}" ]; then
+            echo "Version $version does not match nightly tag ${{ inputs.nightly_tag_release }}. Exiting the workflow."
             exit 1
           fi
           # Strip the leading `v` from the version
@@ -326,7 +326,7 @@ jobs:
       - name: Check out the code
         uses: actions/checkout@v6
         with:
-          ref: ${{ inputs.nightly_tag_main }}
+          ref: ${{ inputs.nightly_tag_release }}
           persist-credentials: true
       - name: Download LFX artifact
         uses: actions/download-artifact@v7
@@ -354,7 +354,7 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v6
         with:
-          ref: ${{ inputs.nightly_tag_main }}
+          ref: ${{ inputs.nightly_tag_release }}
           persist-credentials: true
       - name: Download base artifact
         uses: actions/download-artifact@v7
@@ -382,7 +382,7 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v6
         with:
-          ref: ${{ inputs.nightly_tag_main }}
+          ref: ${{ inputs.nightly_tag_release }}
           persist-credentials: true
       - name: Download main artifact
         uses: actions/download-artifact@v7
@@ -407,7 +407,7 @@ jobs:
     needs: [build-nightly-base, build-nightly-main]
     uses: ./.github/workflows/docker-nightly-build.yml
     with:
-      ref: ${{ inputs.nightly_tag_main }}
+      ref: ${{ inputs.nightly_tag_release }}
       release_type: nightly-base
       push_to_registry: ${{ inputs.push_to_registry }}
     secrets: inherit
@@ -418,7 +418,7 @@ jobs:
     needs: [build-nightly-main, call_docker_build_base]
     uses: ./.github/workflows/docker-nightly-build.yml
     with:
-      ref: ${{ inputs.nightly_tag_main }}
+      ref: ${{ inputs.nightly_tag_release }}
       release_type: nightly-main
       push_to_registry: ${{ inputs.push_to_registry }}
     secrets: inherit
@@ -430,9 +430,9 @@ jobs:
   #   needs: [build-nightly-main]
   #   uses: ./.github/workflows/docker-nightly-build.yml
   #   with:
-  #     ref: ${{ inputs.nightly_tag_main }}
+  #     ref: ${{ inputs.nightly_tag_release }}
   #     release_type: nightly-main-all
-  #     main_version: ${{ inputs.nightly_tag_main }}
+  #     main_version: ${{ inputs.nightly_tag_release }}
   #   secrets: inherit
 
   # call_docker_build_main_ep:
@@ -441,7 +441,7 @@ jobs:
   #   needs: [build-nightly-main, call_docker_build_main]
   #   uses: ./.github/workflows/docker-build-v2.yml
   #   with:
-  #     ref: ${{ inputs.nightly_tag_main }}
+  #     ref: ${{ inputs.nightly_tag_release }}
   #     release_type: main-ep
   #     push_to_registry: ${{ inputs.push_to_registry }}
   #   secrets: inherit

.secrets.baseline

@@ -153,7 +153,7 @@
         "filename": ".github/workflows/nightly_build.yml",
         "hashed_secret": "3e26d6750975d678acb8fa35a0f69237881576b0",
         "is_verified": false,
-        "line_number": 322,
+        "line_number": 257,
         "is_secret": false
       }
     ],
@@ -5674,5 +5674,5 @@
       }
     ]
   },
-  "generated_at": "2026-03-12T02:41:29Z"
-}
+  "generated_at": "2026-03-16T13:08:35Z"
+}

scripts/ci/pypi_nightly_tag.py

@@ -27,6 +27,7 @@ def get_latest_published_version(build_type: str, *, is_nightly: bool) -> Versio
         raise ValueError(msg)
 
     res = requests.get(url, timeout=10)
+    res.raise_for_status()
     try:
         version_str = res.json()["info"]["version"]
     except Exception as e:
@@ -49,19 +50,18 @@ def create_tag(build_type: str):
 
     try:
         current_nightly_version = get_latest_published_version(build_type, is_nightly=True)
-        nightly_base_version = current_nightly_version.base_version
     except (requests.RequestException, KeyError, ValueError):
-        # If MAIN_TAG nightly doesn't exist on PyPI yet, this is the first nightly
+        # If nightly doesn't exist yet
         current_nightly_version = None
-        nightly_base_version = None
 
     build_number = "0"
     latest_base_version = current_version.base_version
-    nightly_base_version = current_nightly_version.base_version
+    nightly_base_version = current_nightly_version.base_version if current_nightly_version else None
 
     if latest_base_version == nightly_base_version:
         # If the latest version is the same as the nightly version, increment the build number
-        build_number = str(current_nightly_version.dev + 1)
+        dev_number = (current_nightly_version.dev or 0) if current_nightly_version else 0
+        build_number = str(dev_number + 1)
 
     new_nightly_version = latest_base_version + ".dev" + build_number