rlyx

rlyx is a Rust-first release tool for single repos and monorepos (JS, Python, Rust). It bumps versions, runs a post-bump command (lock refresh / installs), creates annotated Git tags (package-scoped in monorepos), writes a clean CHANGELOG, and (optionally) makes GitHub Releases — powered by Git history, not rituals.

• Per-package baselines. In monorepos, each package uses its own last tag as the baseline window.
• Package-scoped tags. Default tag shape is {{name}}@v{{version}} (e.g. @scope/core@v1.4.2). Fully configurable (keep slashes, keep @).
• Lock file safety. rlyx.lock records baselines (including SHAs) so you can rebuild even if tags vanish or history shifts.
• Zero registry publishing. rlyx doesn’t publish to npm/PyPI/Crates. It prepares Git artifacts; your CI owns the rest.

Installation

cargo install --locked rlyx

Requires: git.
Optional: gh (GitHub CLI) to resolve PR titles and create GitHub Releases.
Optional (JS projects): pnpm / yarn / npm if you want lockfiles refreshed when versions change.

What it does

• Detects project type (JS / Python / Rust).
• Bumps versions in package.json, pyproject.toml/setup.*, or Cargo.toml.
• Runs a post-bump command before staging/commit/tag (e.g. pnpm i, bun install, yarn install --mode update-lockfile, pip-compile, etc.).
• Creates annotated tags:
  • single repo: vX.Y.Z
  • monorepo: {{name}}@vX.Y.Z (configurable)
• Writes CHANGELOG using git log from the correct baseline (last_tag..HEAD or per-package).
• Pushes commits and tags.
• Monorepo: can create one GitHub Release per package with scoped notes (when gh is available).

Quick start

Single repo

# rlyx.toml
default_bump = "patch"
bump_commit_message = "chore(release): bump to {{version}}"
bump_tag_message    = "release {{version}}"

# IMPORTANT for JS/Python: refresh locks after version bump
# choose what your repo needs (examples):
post_bump_command = "pnpm i"

[changelog]
enable = true
path   = "CHANGELOG.md"

rlyx patch     # or: rlyx minor | rlyx major

Monorepo

# rlyx.toml
default_bump = "patch"

# tag/message shapes
pkg_tag_template = "{{name}}@v{{version}}"
include_v_prefix = true
bump_tag_message = "{{name}}@{{version}}"

# run after bumping versions (pick one that fits your workspace)
post_bump_command = "pnpm i"

# IMPORTANT: only manage these packages (exact manifest names)
packages = ["@acme/core", "@acme/adapters"]

# optional, used for multi-package commits
monorepo_bump_commit_message = "chore(release): bump {{count}} packages\n\n{{list}}"

[changelog]
enable = true
path   = "CHANGELOG.md"

# optional migration (discover old tag shapes)
[migration."@acme/core"]
legacy_tag_patterns = ["core-v*", "core@*"]

First time (or after migrations):

rlyx lock rebuild \
  --baseline @acme/core:v1.2.3 \
  --baseline @acme/adapters:v0.8.0   # only if a package lacks a discoverable baseline

Release:

rlyx --monorepo                # interactive per-package bumps
# subset:
rlyx monorepo --packages "@acme/core,@acme/adapters"

Want tags to match your package names exactly (keep slashes and @)?
Use: pkg_tag_template = "{{name}}@{{version}}" and set include_v_prefix as you prefer.
rlyx will push tags safely even with @ and /.

Configuration reference (rlyx.toml)

All keys are optional unless noted. Defaults are shown.

# ===== General =====
# Default semver bump when CLI omits one
default_bump = "patch"         # "patch" | "minor" | "major"

# Commit message when bumping (used in single or multi, see below)
# Vars: {{name}} {{version}} {{count}} {{list}}
# Default is multi-friendly; override if you prefer a single-repo style.
bump_commit_message = "chore(release): bump {{count}} packages\n\n{{list}}"

# Multi-package (monorepo) commit message; falls back to bump_commit_message if unset
monorepo_bump_commit_message = "chore(release): bump {{count}} packages\n\n{{list}}"

# Tag annotation (tag *message/body*, not the tag name)
# Vars: {{name}} {{version}}
bump_tag_message = "release {{version}}"

# Header inserted at top of the changelog if missing
changelog_header = "# Changelog"

# Tag *name* template for monorepo tags
# Use {{name}} to keep exact pkg name (including @scope and /).
# Use {{id}} to use a sanitized id (slashes -> _; leading @ removed).
pkg_tag_template = "{{name}}@v{{version}}"

# Whether to include "v" in {{version}} when building tags: v1.2.3 vs 1.2.3
include_v_prefix = true

# Allow releasing with a dirty working tree (not recommended)
allow_dirty = false

# Limit rlyx to packages listed here (exact manifest "name" values)
packages = ["@acme/core", "@acme/adapters"]

# Command to run after bumping versions, before changelog/tag (optional)
post_bump_command = "pnpm i"

# ===== Changelog =====
[changelog]
enable = true
path   = "CHANGELOG.md"

# ===== Migration hints (optional) =====
# Helps rlyx discover historical baselines when tag shapes changed.
[migration."@acme/core"]
legacy_tag_patterns = ["core-v*", "core@*"]

Environment variable overrides

All optional; values mirror TOML:

• RLYX_DEFAULT_BUMP
• RLYX_BUMP_COMMIT_MESSAGE
• RLYX_MONOREPO_BUMP_COMMIT_MESSAGE
• RLYX_BUMP_TAG_MESSAGE
• RLYX_CHANGELOG_HEADER
• RLYX_CHANGELOG_ENABLE (true/false)
• RLYX_CHANGELOG_PATH
• RLYX_PKG_TAG_TEMPLATE
• RLYX_INCLUDE_V_PREFIX (true/false)
• RLYX_POST_BUMP_COMMAND

CLI reference

Top-level forms

rlyx [KIND] [FLAGS]                  # single repo release (KIND: patch | minor | major)
rlyx --monorepo [FLAGS]              # monorepo (interactive, filters to config packages)
rlyx monorepo [--packages CSV]       # monorepo (interactive), subset override

rlyx prerelease [--id <str>] [--bump KIND]   # single repo prerelease
rlyx finalize                                # single repo: convert last prerelease to stable

rlyx rollback [--local]               # remove tags at HEAD; rewind release commits; default also updates remote
rlyx selfupdate                       # install latest from crates.io / prefer GH prerelease if on prerelease

rlyx lock rebuild [--force] [--baseline NAME:REF ...] [--from-file PATH]
rlyx lock verify
rlyx tag synthesize --baseline NAME:REF [...]

Common flags

• --dry : perform everything except pushing
• --no-changelog : skip changelog write for this run
• --repo owner/repo : override detected GitHub repo (for URLs and GH release creation)
• --monorepo : force monorepo mode if auto-detect is ambiguous
• --packages "<a,b>" : monorepo subcommand only; filter a subset
• --ignore_package : single repo only; bump/tag without rewriting manifest (tag-only)

prerelease notes

• --id default: rc. Examples: v1.2.3-rc.1, v1.2.3-nightly.20250131[.N].
• --bump controls the base bump (defaults to default_bump).

finalize (single repo)

• Takes the last reachable prerelease tag, strips the -pre suffix, and creates vX.Y.Z.
• Refuses if the stable tag already exists.

lock rebuild

• Builds/updates rlyx.lock by discovering packages and anchoring per-package baselines.
• --baseline NAME:REF lets you pin a baseline: REF may be v1.2.3, 1.2.3, or a raw commit SHA.
• --force overwrites an existing lock file.
• --from-file is reserved for future use.

tag synthesize

• Mints annotated tags at given refs without bumping files:

  rlyx tag synthesize --baseline @acme/core:v1.2.3 --baseline @acme/adapters:deadbeef
  

rollback

• Without --local, removes remote tags at HEAD and force-pushes branch after rewinding obvious release commits.
• With --local, operates locally only.

Monorepo is currently interactive. Non-interactive per-package bump flags are on the roadmap. For CI flows today, run rlyx lock rebuild in a preparatory step and use rlyx --monorepo only when a human is present, or script tag synthesize for tag-only flows.

CHANGELOG behavior

• New sections are prepended.
• Header: ## <tag> <YYYY-MM-DD>
• Sections:
  • Changes since <base>: git log --no-merges --pretty=- %h %s
  • Pull requests: numbers like (#123) optionally resolved via gh to titles
  • Authors: from git shortlog -sn (singular/plural friendly)
  • Compare: link to the GitHub compare page

Monorepo: a single batch section (e.g. ## batch-20250131235959) with one sub-section per package tagged, each with its scoped commit window.

Tagging details & special characters

• Single repo tag name: v<semver>.
• Monorepo tag name: built from pkg_tag_template. To keep slashes and @ in tag names, use {{name}} (not {{id}}).
• Tags are annotated and include durable trailers:

  rlyx:id=<sanitized-tag-id>
  rlyx:pkg=<package-name>
  rlyx:ver=<version-core>
  rlyx:sha=<target-commit-sha>
  

If your remote/refspec complains about special chars, push the explicit ref:

git push origin "refs/tags/@scope/pkg@0.2.0"

Supported projects

• Node: package.json (and lockfile refresh if pnpm/yarn/npm exist)
• Python: pyproject.toml (PEP 621 / Poetry), setup.cfg, setup.py
• Rust: Cargo.toml (single crate or workspace; workspace members are updated)

Troubleshooting

• “Working tree is not clean.” Commit/stash changes or allow_dirty = true (use sparingly).
• “No baseline for package X.”
  rlyx lock rebuild --baseline <name>:<v1.2.3|sha> or add migration.<name>.legacy_tag_patterns.
• “Push failed for tag with @/ /.”
  Use pkg_tag_template = "{{name}}@{{version}}", and if necessary push refs/tags/<tag>.
• “It asked me to bump 70 packages.”
  Ensure your packages = [...] allowlist names exactly match each manifest’s "name". Use rlyx monorepo --packages "a,b,c" for ad-hoc subsets.
• “Monorepo ‘kind’ flag didn’t apply.”
  Current monorepo flow is interactive; bump kind flags are reserved for future non-interactive mode.

Safety rails

• Clean tree check (unless allow_dirty).
• Baseline reachability checks on lock verify/rebuild.
• Semver-aware tag ordering & collision detection across legacy patterns.
• Rollback removes tags at HEAD and rewinds release commits (optionally pushes the branch).

CI hints

• Generate/refresh lock in a dedicated job:

  rlyx lock rebuild
  git add rlyx.lock && git commit -m "chore: refresh rlyx.lock" || true
  

• For automated tag-only flows (no file edits), consider:

  rlyx tag synthesize --baseline @acme/core:v1.2.3
  

• For human-in-the-loop monorepo releases, run rlyx --monorepo locally or in a TTY-enabled runner.

Command cheatsheet

# Single repo
rlyx patch|minor|major
rlyx prerelease --bump minor --id rc
rlyx finalize
rlyx rollback [--local]
rlyx selfupdate

# Monorepo
rlyx lock rebuild [--force] [--baseline NAME:REF ...]
rlyx lock verify
rlyx --monorepo
rlyx monorepo --packages "@acme/core,@acme/adapters"

# Tags without bumping files
rlyx tag synthesize --baseline @acme/core:v1.2.3

Notes on defaults you may want to change immediately

• If you want single-repo commits like chore(release): bump to 1.2.3, override bump_commit_message accordingly (the default is multi-package friendly).
• If you want tag names to mirror packages (keep @scope/ and /):
  pkg_tag_template = "{{name}}@{{version}}" and choose your include_v_prefix.