Cannot get vcs source in github PR event trigger

[clement-chaneching]

I cannot manage to build my docker image during a PR event trigger.

I am using this trigger:

  docker-build-and-deploy:
    if: contains(github.event.pull_request.labels.*.name, 'label')

With this docker build action that tries to install a package:

- name: Build and push
        uses: docker/build-push-action@v6
        env:
          DOCKER_BUILD_SUMMARY: false
          SETUPTOOLS_SCM_PRETEND_VERSION: "0.0.0"
        with:
          cache-to: type=inline
          provenance: false
          build-args: |
            BUILDKIT_CONTEXT_KEEP_GIT_DIR=1

The package has this pyproject.toml:

[tool.hatch.version]
source = "vcs"

[tool.hatch.version.raw-options]
root = "../.."
fallback_version="0.0.0"

Here is the error:

#16 42.08   × environment: error installing/updating PyPI dependencies
#16 42.08   ├─▶ Failed to prepare distributions
#16 42.08   ├─▶ Failed to fetch wheel: experiments @ file:///app/packages/experiments
#16 42.08   ╰─▶ Build backend failed to build wheel through `build_editable()` with exit
#16 42.08       status: 1
#16 42.08       --- stdout:
#16 42.08       
#16 42.08       --- stderr:
#16 42.08       /root/.cache/rattler/cache/uv-cache/builds-v0/.tmpt35zt9/lib/python3.10/
#16 42.08       site-packages/setuptools_scm/git.py:167: UserWarning: "/app" is shallow
#16 42.08       and may cause errors
#16 42.08         warnings.warn(f'"{wd.path}" is shallow and may cause errors')
#16 42.08       /root/.cache/rattler/cache/uv-cache/builds-v0/.tmpt35zt9/lib/python3.10/
#16 42.08       site-packages/setuptools_scm/version.py:102: UserWarning: tag 'refs/
#16 42.08       pull/2096/merge' no version found
#16 42.08         warnings.warn(f"tag {tag!r} no version found")
#16 42.08       Traceback (most recent call last):
#16 42.08         File "<string>", line 11, in <module>
#16 42.08         File "/root/.cache/rattler/cache/uv-cache/builds-v0/.tmpt35zt9/lib/
#16 42.08       python3.10/site-packages/hatchling/build.py", line 83, in build_editable
#16 42.08           return os.path.basename(next(builder.build(directory=wheel_directory,
#16 42.08       versions=['editable'])))
#16 42.08         File "/root/.cache/rattler/cache/uv-cache/builds-v0/.tmpt35zt9/lib/
#16 42.08       python3.10/site-packages/hatchling/builders/plugin/interface.py", line
#16 42.08       90, in build
#16 42.08           self.metadata.validate_fields()
#16 42.08         File "/root/.cache/rattler/cache/uv-cache/builds-v0/.tmpt35zt9/lib/
#16 42.08       python3.10/site-packages/hatchling/metadata/core.py", line 265, in
#16 42.08       validate_fields
#16 42.08           _ = self.version
#16 42.08         File "/root/.cache/rattler/cache/uv-cache/builds-v0/.tmpt35zt9/lib/
#16 42.08       python3.10/site-packages/hatchling/metadata/core.py", line 149, in
#16 42.08       version
#16 42.08           self._version = self._get_version()
#16 42.08         File "/root/.cache/rattler/cache/uv-cache/builds-v0/.tmpt35zt9/lib/
#16 42.08       python3.10/site-packages/hatchling/metadata/core.py", line 248, in
#16 42.08       _get_version
#16 42.08           version = self.hatch.version.cached
#16 42.08         File "/root/.cache/rattler/cache/uv-cache/builds-v0/.tmpt35zt9/lib/
#16 42.08       python3.10/site-packages/hatchling/metadata/core.py", line 1456, in
#16 42.08       cached
#16 42.08           raise type(e)(message) from None
#16 42.08       AssertionError: Error getting the version from source `vcs`:
#16 42.08       ---

Is it because it tries to fetch a PR instead of a tag?
UserWarning: tag 'refs/pull/2096/merge' no version found

I tried using checkout with fetch-depth:0, setting SETUPTOOLS_SCM_PRETEND_VERSION and fallback without success.
The docker build works well when using a workflow_dispatch or merge to main event, but I cant get it to work during a PR event based on a label.

Thanks for your help!

[RonnyPfannschmidt]

off hand its uncear why its not seeing the details

can you add SETUPTOOLS_SCM_DEBUG=1 to the environment to see more of the output

with pretend version set it should not even look at the scm

[clement-chaneching]

Thanks for replying!
I added SETUPTOOLS_SCM_DEBUG=1 in the github action and the Dockerfiles, but it doesnt output any additional logs.
It works locally, on workflow dispatch and push events as well, but not on my pull_request github action trigger

The task that fails is when it builds my docker image with pixi:

ENV SETUPTOOLS_SCM_PRETEND_VERSION=1
ENV SETUPTOOLS_SCM_DEBUG=1

RUN --mount=type=secret,id=GAUTH,uid=1000 \
    pixi install -e my_environment --locked --pypi-keyring-provider subprocess

And in my pixi.toml i have:
experiments = { path = "packages/experiments", editable = true }

Which has the following pyproject.toml:

[project]
name = "experiments"
dynamic = ["version"]
[build-system]
requires = ["hatchling", "hatch-vcs"]
build-backend = "hatchling.build"

[tool.hatch.build.targets.wheel]
packages = ["experiments"]

[tool.hatch.build.targets.wheel.sources]
"experiments" = "experiments"

[tool.hatch.version]
source = "vcs"

[tool.hatch.version.raw-options]
root = "../.."
fallback_version="0.0.0"

[tool.hatch.metadata]
allow-direct-references = true

I m not sure what additional information I can provide.

[RonnyPfannschmidt]

Then you need to make the build tool verbose as well

Without the extra logs there's nothing i can do

[clement-chaneching]

I couldnt get any additional logs, even by setting buildx debug and progress=plain, but it looks like adding ENV SETUPTOOLS_SCM_PRETEND_VERSION=1.0.0 in the dockerfile directly fixed it.
Cant find any better workaround for now! Thanks for the help and sorry for the inconvenience.