pinsync

Keep every copy of a pinned version in step with the one place that defines it.

A tool's version tends to be written in several places: a pre-commit hook's rev, uv== in another hook's additional_dependencies, the version input of a setup action in CI. Dependency bots bump one of them and the rest drift. pinsync gives each pin one source — a lockfile or a hook rev your bumper already updates — and rewrites every copy to match.

Install

From PyPI, as a prebuilt binary:

uv tool install pinsync

Or from source:

go install github.com/jmelahman/pinsync@latest

Binaries for each platform are also attached to every release.

Configuration

.config/pinsync/config.toml, at the root of the git repository:

# The version is the uv-pre-commit rev in the root .pre-commit-config.yaml,
# which `prek autoupdate` bumps.
[pins.uv]
source = "pre-commit"
repo = "https://github.com/astral-sh/uv-pre-commit"
action = "astral-sh/setup-uv"        # steps' `version` input follows it

# The version uv.lock locks git-orchard at.
[pins.git-orchard]
source = "uv.lock"
repo = "https://github.com/jmelahman/git-orchard"   # this hook's rev follows it

[pins.prek]
source = "uv.lock"
action = "j178/prek-action"
input = "prek-version"               # the input, when it isn't `version`

# A version nothing else defines.
[pins.shfmt]
version = "3.14.1"
package = "mvdan.cc/sh/v3/cmd/shfmt"

A pin's source is one of:

• source = "uv.lock" — the version uv.lock, at the root, locks package at.
• source = "pre-commit" — the tag in the # frozen: comment (or else the rev) of repo in the root .pre-commit-config.yaml.
• version = "..." — the version itself.

Its copies, in every file git tracks:

• Hook revs. The rev of repo in any .pre-commit-config.yaml. A rev pinned to a commit needs a # frozen: <tag> comment, as prek autoupdate --freeze writes; pinsync rewrites both.
• Hook dependencies. package==version (Python, by normalized name) and package@version (Go, npm) in any hook's additional_dependencies. package defaults to the pin's name.
• Action inputs. input (default version) of any step that uses action, in .github/workflows/ and composite action.yml files. An input set by an expression is left alone.

A copy keeps its own spelling: a v prefix, quotes, and the comments and formatting around it.

Usage

pinsync check   # list the copies that differ from their pin; exit 1 if any
pinsync sync    # rewrite them; exit 1 if anything changed

check needs no network: it reads a rev's version from its # frozen: comment. sync looks up the commit of a rev's new tag with git ls-remote.

pre-commit

sync exits 1 when it changes a file, like a formatter:

repos:
  - repo: https://github.com/jmelahman/pinsync
    rev: v0.1.0
    hooks:
      - id: pinsync

Run it before anything that copies the files it rewrites, such as git-orchard's git-orchard-sync.

pinsync-check runs check instead: it fails without touching anything and needs no network, for CI or anywhere a hook shouldn't rewrite files.

      - id: pinsync-check