ci: create a nightly build workflow (#3553)

* test poetry install

* Add nightly builds workflow

* remove old comments and fix poetry

* remove old debug statement

* [autofix.ci] apply automated fixes

---------

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

scripts/ci/update_lf_base_dependency.py

@@ -0,0 +1,62 @@
+import os
+import sys
+import re
+
+import packaging.version
+
+BASE_DIR = os.path.abspath(os.path.join(os.path.dirname(__file__), "../.."))
+
+
+def update_base_dep(pyproject_path: str, new_version: str) -> None:
+    """Update the langflow-base dependency in pyproject.toml."""
+    filepath = os.path.join(BASE_DIR, pyproject_path)
+    with open(filepath, "r") as file:
+        content = file.read()
+
+    # Regex to match the langflow-base dep line under [tool.poetry]
+    # NOTE: this functions similarly to `update_dependencies.py`.
+    # The order of operations for these scripts is more complex than it needs to be;
+    # this is a reminder to revisit this process.
+    # Currently, the process is as follows:
+    # 1. nightly-build workflow updates all names, version, and the langflow-base
+    #    dependency in pyproject.toml, and commits the changes and creates a tag.
+    # 2. release-nightly workflow runs, which calls update_dependencies.py to update
+    #   the langflow-base dependency in pyproject.toml _again_. This is redundant, but
+    #   necessary because the release workflow relies on that script to update the base
+    #   dependency.
+    pattern = re.compile(r'langflow-base = \{ path = "\./src/backend/base", develop = true \}')
+
+    if not pattern.search(content):
+        raise Exception(f'langflow-base dependency not found in "{filepath}"')
+
+    replacement = f'langflow-base-nightly = "^{new_version}"'
+    content = pattern.sub(replacement, content)
+
+    with open(filepath, "w") as file:
+        file.write(content)
+
+
+def verify_pep440(version):
+    """
+    Verify if version is PEP440 compliant.
+
+    https://github.com/pypa/packaging/blob/16.7/packaging/version.py#L191
+    """
+
+    try:
+        return packaging.version.Version(version)
+    except packaging.version.InvalidVersion as e:
+        raise e
+
+
+def main() -> None:
+    if len(sys.argv) != 2:
+        raise Exception("New version not specified")
+    base_version = sys.argv[1]
+
+    verify_pep440(base_version)
+    update_base_dep("pyproject.toml", base_version)
+
+
+if __name__ == "__main__":
+    main()