GV

GeezerVison

The World Wide Web, restored to 800 pixels of glory.

Home|About|Gaming cabinet|Archives|How it works|Starter sites

On this site

  • Sign in
  • ActionsCI/CD and automation
  • CodespacesCloud development environments
  • All Features
  • Documentation
  • Training
  • Certifications
  • Build with Copilot
  • Customize Copilot
  • Integrations
  • Trending repos
  • GitHub Sponsors
  • Developer articles
  • Enterprises

This view

  • Original page
  • New address

GeezerVison is showing github.com — Julia language: skip startup.jl file by ericphanson · Pull Request #3496 · pre-commit/pre-commit

Conversation

@ericphanson

@ericphanson ericphanson commented Jul 21, 2025

Copy link
Copy Markdown
Contributor

Adds --startup-file=no to both invocations of Julia (install & run). The startup file is a Julia script that users can configure to run commands before the start of their Julia session. It is typically used to load developer packages like Revise and not used "in-production". Here when we run our pre-commit hooks we do not want to run the user's startup file which could have dependencies the current environment does not have.

Split out from #3494

The first commit fails locally for me, showing that the test is effective:

 pytest tests -sk test_julia_hook_with_startup
=========================================== test session starts ===========================================
platform darwin -- Python 3.13.4, pytest-8.4.1, pluggy-1.6.0
rootdir: /Users/eph/pre-commit
configfile: tox.ini
plugins: env-1.1.5
collected 802 items / 801 deselected / 1 selected                                                         

tests/languages/julia_test.py F

================================================ FAILURES =================================================
______________________________________ test_julia_hook_with_startup _______________________________________

tmp_path = PosixPath('/private/var/folders/jb/plyyfc_d2bz195_0rc0n_zcw0000gp/T/pytest-of-eph/pytest-21/test_julia_hook_with_startup0')

    def test_julia_hook_with_startup(tmp_path):
        # We will temporarily use a new Julia depot so we can freely write a
        # startup.jl file
        existing_depot = os.getenv('JULIA_DEPOT_PATH')
        try:
            with tempfile.TemporaryDirectory() as depot_tempdir:
                os.environ['JULIA_DEPOT_PATH'] = depot_tempdir
                depot_path = Path(depot_tempdir)
                depot_path.joinpath('config').mkdir(exist_ok=True)
                startup = depot_path.joinpath('config', 'startup.jl')
                # write a startup.jl file that throws an error so
                # we know it's not used
                startup.write_text('error("Startup file used!")\n')
                # check that the test still succeeds even with a bad startup file
>               test_julia_hook(tmp_path)

tests/languages/julia_test.py:49: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
tests/languages/julia_test.py:32: in test_julia_hook
    assert run_language(tmp_path, julia, 'src/main.jl') == expected
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
testing/language_helpers.py:26: in run_language
    language.install_environment(prefix, version, deps)
pre_commit/languages/julia.py:129: in install_environment
    cmd_output_b(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

check = True
cmd = ('/Users/eph/.juliaup/bin/julia', '-e', '\n        @assert length(ARGS) > 0\n        hook_env = ARGS[1]\n        deps ...ar/folders/jb/plyyfc_d2bz195_0rc0n_zcw0000gp/T/pytest-of-eph/pytest-21/test_julia_hook_with_startup0/juliaenv-default')
kwargs = {'cwd': '/private/var/folders/jb/plyyfc_d2bz195_0rc0n_zcw0000gp/T/pytest-of-eph/pytest-21/test_julia_hook_with_startup0', 'stderr': -1, 'stdin': -1, 'stdout': -1}
proc = <Popen: returncode: 1 args: ('/Users/eph/.juliaup/bin/julia', '-e', '\n     ...>, stdout_b = b''
stderr_b = b'ERROR: LoadError: Startup file used!\nStacktrace:\n [1] error(s::String)\n   @ Base ./error.jl:35\n [2] top-level sc...tup.jl:1\nin expression starting at /var/folders/jb/plyyfc_d2bz195_0rc0n_zcw0000gp/T/tmplwwx2crp/config/startup.jl:1\n'
returncode = 1

    def cmd_output_b(
            *cmd: str,
            check: bool = True,
            **kwargs: Any,
    ) -> tuple[int, bytes, bytes | None]:
        _setdefault_kwargs(kwargs)
    
        try:
            cmd = parse_shebang.normalize_cmd(cmd, env=kwargs.get('env'))
        except parse_shebang.ExecutableNotFoundError as e:
            returncode, stdout_b, stderr_b = e.to_output()
        else:
            try:
                proc = subprocess.Popen(cmd, **kwargs)
            except OSError as e:
                returncode, stdout_b, stderr_b = _oserror_to_output(e)
            else:
                stdout_b, stderr_b = proc.communicate()
                returncode = proc.returncode
    
        if check and returncode:
>           raise CalledProcessError(returncode, cmd, stdout_b, stderr_b)
E           pre_commit.util.CalledProcessError: command: ('/Users/eph/.juliaup/bin/julia', '-e', '\n        @assert length(ARGS) > 0\n        hook_env = ARGS[1]\n        deps = join(ARGS[2:end], " ")\n\n        # We prepend @stdlib here so that we can load the package manager even\n        # though `get_env_patch` limits `JULIA_LOAD_PATH` to just the hook env.\n        pushfirst!(LOAD_PATH, "@stdlib")\n        using Pkg\n        popfirst!(LOAD_PATH)\n\n        # Instantiate the environment shipped with the hook repo. If we have\n        # additional dependencies we disable precompilation in this step to\n        # avoid double work.\n        precompile = isempty(deps) ? "1" : "0"\n        withenv("JULIA_PKG_PRECOMPILE_AUTO" => precompile) do\n            Pkg.instantiate()\n        end\n\n        # Add additional dependencies (with precompilation)\n        if !isempty(deps)\n            withenv("JULIA_PKG_PRECOMPILE_AUTO" => "1") do\n                Pkg.REPLMode.pkgstr("add " * deps)\n            end\n        end\n        ', '--', '/private/var/folders/jb/plyyfc_d2bz195_0rc0n_zcw0000gp/T/pytest-of-eph/pytest-21/test_julia_hook_with_startup0/juliaenv-default')
E           return code: 1
E           stdout: (none)
E           stderr:
E               ERROR: LoadError: Startup file used!
E               Stacktrace:
E                [1] error(s::String)
E                  @ Base ./error.jl:35
E                [2] top-level scope
E                  @ /var/folders/jb/plyyfc_d2bz195_0rc0n_zcw0000gp/T/tmplwwx2crp/config/startup.jl:1
E               in expression starting at /var/folders/jb/plyyfc_d2bz195_0rc0n_zcw0000gp/T/tmplwwx2crp/config/startup.jl:1

pre_commit/util.py:111: CalledProcessError
========================================= short test summary info =========================================
FAILED tests/languages/julia_test.py::test_julia_hook_with_startup - pre_commit.util.CalledProcessError: command: ('/Users/eph/.juliaup/bin/julia', '-e', '\n        @asser...
==================================== 1 failed, 801 deselected in 1.30s ====================================

The second commit is the implementation change which shows that the the fix is effective:

❯ pytest tests -sk test_julia_hook_with_startup
=========================================== test session starts ===========================================
platform darwin -- Python 3.13.4, pytest-8.4.1, pluggy-1.6.0
rootdir: /Users/eph/pre-commit
configfile: tox.ini
plugins: env-1.1.5
collected 802 items / 801 deselected / 1 selected                                                         

tests/languages/julia_test.py .

============================== 1 passed, 801 deselected in 64.48s (0:01:04) ===============================

Sorry, something went wrong.

Uh oh!

There was an error while loading. Please reload this page.

abelsiqueira reacted with thumbs up emoji
All reactions
  • 👍 1 reaction
@ericphanson ericphanson mentioned this pull request Jul 21, 2025
improve julia language support #3494
Closed
@ericphanson @asottile
Julia language: skip startup.jl file
6f1f433
@asottile
asottile force-pushed the eph/jl-startup branch from ce7eae3 to 6f1f433 Compare August 2, 2025 18:36
asottile
asottile approved these changes Aug 2, 2025
View reviewed changes

@asottile asottile left a comment

Copy link
Copy Markdown
Member

There was a problem hiding this comment.

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Sorry, something went wrong.

Uh oh!

There was an error while loading. Please reload this page.

ddellspe reacted with eyes emoji
All reactions
  • 👀 1 reaction
@asottile
asottile enabled auto-merge August 2, 2025 18:36
@asottile
asottile merged commit a5fe6c5 into pre-commit:main Aug 2, 2025
tmeijn pushed a commit to tmeijn/dotfiles that referenced this pull request Aug 12, 2025
ECG Bot @tmeijn
build(deps): update pre-commit to v4.3.0
2caedcd
This MR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [pre-commit](https://github.com/pre-commit/pre-commit) | minor | `4.2.0` -> `4.3.0` |

MR created with the help of [el-capitano/tools/renovate-bot](https://gitlab.com/el-capitano/tools/renovate-bot).

**Proposed changes to behavior should be submitted there as MRs.**

---

### Release Notes

<details>
<summary>pre-commit/pre-commit (pre-commit)</summary>

### [`v4.3.0`](https://github.com/pre-commit/pre-commit/blob/HEAD/CHANGELOG.md#430---2025-08-09)

[Compare Source](pre-commit/pre-commit@v4.2.0...v4.3.0)

\==================

##### Features

- `language: docker` / `language: docker_image`: detect rootless docker.
  - [#&#8203;3446](pre-commit/pre-commit#3446) MR by [@&#8203;matthewhughes934](https://github.com/matthewhughes934).
  - [#&#8203;1243](pre-commit/pre-commit#1243) issue by [@&#8203;dkolepp](https://github.com/dkolepp).
- `language: julia`: avoid `startup.jl` when executing hooks.
  - [#&#8203;3496](pre-commit/pre-commit#3496) MR by [@&#8203;ericphanson](https://github.com/ericphanson).
- `language: dart`: support latest dart versions which require a higher sdk
  lower bound.
  - [#&#8203;3507](pre-commit/pre-commit#3507) MR by [@&#8203;bc-lee](https://github.com/bc-lee).

</details>

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever MR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this MR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this MR, check this box

---

This MR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0MS41OC4yIiwidXBkYXRlZEluVmVyIjoiNDEuNTguMiIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOlsiUmVub3ZhdGUgQm90Il19-->
@ericphanson ericphanson mentioned this pull request Feb 2, 2026
use Julia hook, update install instructions beacon-biosignals/OndaEDF.jl#115
Merged
@fredrikekre fredrikekre mentioned this pull request Apr 14, 2026
disable Julia startup file? fredrikekre/runic-pre-commit#3
Closed
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Reviewers

@asottile asottile asottile approved these changes

Uh oh!

There was an error while loading. Please reload this page.

Assignees

No one assigned

Labels

None yet

Milestone

No milestone

Development

Successfully merging this pull request may close these issues.

Uh oh!

There was an error while loading. Please reload this page.

2 participants

@ericphanson @asottile
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
You are visitor 01402503 — GeezerVison does not store the pages you look up.
Best viewed with Netscape Navigator 4.7 or Internet Explorer 6 at 800×600. No cookies required.