Usage of nvchecker commands

nvchecker (short for new version checker) is for checking if a new version of some software has been released.

This is the version 2.0 branch. For the old version 1.x, please switch to the v1.x branch.

Test Status PyPI version

Dependency

  • Python 3.7+

  • Python library: structlog, toml, appdirs

  • One of these Python library combinations (ordered by preference):

    • tornado + pycurl

    • aiohttp

    • httpx with http2 support (experimental; only latest version is supported)

    • tornado

  • All commands used in your software version configuration files

Install and Run

To install:

pip3 install nvchecker

To use the latest code, you can also clone this repository and run:

python3 setup.py install

To see available options:

nvchecker --help

Run with one or more software version files:

nvchecker -c config_file.toml

A simple config file may look like:

[nvchecker]
source = "github"
github = "lilydjwg/nvchecker"

[python-toml]
source = "pypi"
pypi = "toml"

You normally will like to specify some “version record files”; see below.

JSON logging

With --logger=json or --logger=both, you can get a structured logging for programmatically consuming. You can use --json-log-fd=FD to specify the file descriptor to send logs to (take care to do line buffering). The logging level option (-l or --logging) doesn’t take effect with this.

The JSON log is one JSON string per line. The following documented events and fields are stable, undocumented ones may change without notice.

event=updated

An update is detected. Fields name, old_version and version are available. old_version maybe null.

event=up-to-date

There is no update. Fields name and version are available.

event=no-result

No version is detected. There may be an error. Fields name is available.

level=error

There is an error. Fields name and exc_info may be available to give further information.

Upgrade from 1.x version

There are several backward-incompatible changes from the previous 1.x version.

  1. Version 2.x requires Python 3.7+ to run.

  2. The command syntax changes a bit. You need to use a -c switch to specify your software version configuration file (or use the default).

  3. The configuration file format has been changed from ini to toml. You can use the nvchecker-ini2toml script to convert your old configuration files. However, comments and formatting will be lost, and some options may not be converted correctly.

  4. Several options have been renamed. max_concurrent to max_concurrency, and all option names have their - be replaced with _.

  5. All software configuration tables need a source option to specify which source is to be used rather than being figured out from option names in use. This enables additional source plugins to be discovered.

  6. The version record files have been changed to use JSON format (the old format will be converted on writing).

  7. The vcs source is removed. (It’s available inside lilac at the moment.) A git source is provided.

  8. include_tags_pattern and ignored_tags are removed. Use List Options instead.

Version Record Files

Version record files record which version of the software you know or is available. They are a simple JSON object mapping software names to known versions.

The nvtake Command

This command helps to manage version record files. It reads both old and new version record files, and a list of names given on the commandline. It then update the versions of those names in the old version record file.

This helps when you have known (and processed) some of the updated software, but not all. You can tell nvchecker that via this command instead of editing the file by hand.

This command will help most if you specify where you version record files are in your config file. See below for how to use a config file.

The nvcmp Command

This command compares the newver file with the oldver one and prints out any differences as updates, e.g.:

$ nvcmp -c sample_source.toml
Sparkle Test App None -> 2.0
test 0.0 -> 0.1

Configuration Files

The software version source files are in toml format. The key name is the name of the software. Following fields are used to tell nvchecker how to determine the current version of that software.

See sample_source.toml for an example.

Configuration Table

A special table named __config__ provides some configuration options.

Relative path are relative to the source files, and ~ and environmental variables are expanded.

Currently supported options are:

oldver

Specify a version record file containing the old version info.

newver

Specify a version record file to store the new version info.

proxy

The HTTP proxy to use. The format is proto://host:port, e.g. http://localhost:8087. Different backends have different level support for this, e.g. with pycurl you can use socks5h://host:port proxies.

max_concurrency

Max number of concurrent jobs. Default: 20.

http_timeout

Time in seconds to wait for HTTP requests. Default: 20.

keyfile

Specify a toml config file containing key (token) information. This file should contain a keys table, mapping key names to key values. See specific source for the key name(s) to use.

Sample keyfile.toml:

[keys]
# https://github.com/settings/tokens
# scope: repo -> public_repo
github = "ghp_<stripped>"

Global Options

The following options apply to every check sources. You can use them in any item in your configuration file.

prefix

Strip the prefix string if the version string starts with it. Otherwise the version string is returned as-is.

from_pattern, to_pattern

Both are Python-compatible regular expressions. If from_pattern is found in the version string, it will be replaced with to_pattern.

If from_pattern is not found, the version string remains unchanged and no error is emitted.

missing_ok

Suppress warnings and errors if a version checking module finds nothing. Currently only regex supports it.

proxy

The HTTP proxy to use. The format is proto://host:port, e.g. http://localhost:8087. Different backends have different level support for this, e.g. with pycurl you can use socks5h://host:port proxies.

Set it to "" (empty string) to override the global setting.

This only works when the source implementation uses the builtin HTTP client, and doesn’t work with the aur source because it’s batched (however the global proxy config still applies).

user_agent

The user agent string to use for HTTP requests.

tries

Try specified times when a network error occurs. Default is 1.

This only works when the source implementation uses the builtin HTTP client.

httptoken

A personal authorization token used to fetch the url with the Authorization header. The type of token depends on the authorization required.

  • For Bearer token set : Bearer <Your_bearer_token>

  • For Basic token set : Basic <Your_base64_encoded_token>

In the keyfile add httptoken_{name} token.

verify_cert

Whether to verify the HTTPS certificate or not. Default is true.

If both prefix and from_pattern/to_pattern are used, from_pattern/to_pattern are ignored. If you want to strip the prefix and then do something special, just use from_pattern`/to_pattern. For example, the transformation of v1_1_0 => 1.1.0 can be achieved with from_pattern = v(\d+)_(\d+)_(\d+) and to_pattern = \1.\2.\3.

List Options

The following options apply to sources that return a list. See individual source tables to determine whether they are supported.

include_regex

Only consider version strings that match the given regex. The whole string should match the regex. Be sure to use .* when you mean it!

exclude_regex

Don’t consider version strings that match the given regex. The whole string should match the regex. Be sure to use .* when you mean it! This option has higher precedence that include_regex; that is, if matched by this one, it’s excluded even it’s also matched by include_regex.

sort_version_key

Sort the version string using this key function. Choose between parse_version and vercmp. Default value is parse_version. parse_version use an old version of pkg_resources.parse_version. vercmp use pyalpm.vercmp.

ignored

Version strings that are explicitly ignored, separated by whitespace. This can be useful to avoid some known mis-named versions, so newer ones won’t be “overridden” by the old broken ones.

Search in a Webpage

source = "regex"

Search through a specific webpage for the version string. This type of version finding has these fields:

url

The URL of the webpage to fetch.

encoding

(Optional) The character encoding of the webpage, if latin1 is not appropriate.

regex

A regular expression used to find the version string.

It can have zero or one capture group. The capture group or the whole match is the version string.

When multiple version strings are found, the maximum of those is chosen.

post_data

(Optional) When present, a POST request (instead of a GET) will be used. The value should be a string containing the full body of the request. The encoding of the string can be specified using the post_data_type option.

post_data_type

(Optional) Specifies the Content-Type of the request body (post_data). By default, this is application/x-www-form-urlencoded.

This source supports List Options.

Search in an HTTP header

source = "httpheader"

Send an HTTP request and search through a specific header.

url

The URL of the HTTP request.

header

(Optional) The header to look at. Default is Location. Another useful header is Content-Disposition.

regex

A regular expression used to find the version string.

It can have zero or one capture group. The capture group or the whole match is the version string.

When multiple version strings are found, the maximum of those is chosen.

method

(Optional) The HTTP method to use. Default is HEAD.

follow_redirects

(Optional) Whether to follow 3xx HTTP redirects. Default is false. If you are looking at a Location header, you shouldn’t change this.

Search with an HTML Parser

source = "htmlparser"

Send an HTTP request and search through the body a specific xpath.

url

The URL of the HTTP request.

xpath

An xpath expression used to find the version string.

post_data

(Optional) When present, a POST request (instead of a GET) will be used. The value should be a string containing the full body of the request. The encoding of the string can be specified using the post_data_type option.

post_data_type

(Optional) Specifies the Content-Type of the request body (post_data). By default, this is application/x-www-form-urlencoded.

Note

An additional dependency “lxml” is required.

Find with a Command

source = "cmd"

Use a shell command line to get the version. The output is striped first, so trailing newlines do not bother.

cmd

The command line to use. This will run with the system’s standard shell (i.e. /bin/sh).

Check AUR

source = "aur"

Check Arch User Repository for updates. Per-item proxy setting doesn’t work for this because several items will be batched into one request.

aur

The package name in AUR. If empty, use the name of software (the table name).

strip_release

Strip the release part.

use_last_modified

Append last modified time to the version.

Check GitHub

source = "github"

Check GitHub for updates. The version returned is in date format %Y%m%d.%H%M%S, e.g. 20130701.012212, unless use_latest_release or use_max_tag is used. See below.

github

The github repository, with author, e.g. lilydjwg/nvchecker.

branch

Which branch to track? Default: master.

path

Only commits containing this file path will be returned.

use_latest_release

Set this to true to check for the latest release on GitHub.

GitHub releases are not the same with git tags. You’ll see big version names and descriptions in the release page for such releases, e.g. zfsonlinux/zfs’s, and those small ones like nvchecker’s are only git tags that should use use_max_tag below.

Will return the release name instead of date.

use_latest_tag

Set this to true to check for the latest tag on GitHub.

This requires a token because it’s using the v4 GraphQL API.

query

When use_latest_tag is true, this sets a query for the tag. The exact matching method is not documented by GitHub.

use_max_tag

Set this to true to check for the max tag on GitHub. Unlike use_latest_release, this option includes both annotated tags and lightweight ones, and return the largest one sorted by the sort_version_key option. Will return the tag name instead of date.

token

A personal authorization token used to call the API.

An authorization token may be needed in order to use use_latest_tag or to request more frequently than anonymously.

To set an authorization token, you can set:

  • a key named github in the keyfile

  • the token option

This source supports List Options when use_max_tag is set.

Check Gitea

source = "gitea"

Check Gitea for updates. The version returned is in date format %Y%m%d, e.g. 20130701, unless use_max_tag is used. See below.

gitea

The gitea repository, with author, e.g. gitea/tea.

branch

Which branch to track? Default: master.

use_max_tag

Set this to true to check for the max tag on Gitea. Will return the biggest one sorted by old pkg_resources.parse_version. Will return the tag name instead of date.

host

Hostname for self-hosted Gitea instance.

token

Gitea authorization token used to call the API.

To set an authorization token, you can set:

  • a key named gitea_{host} in the keyfile, where host is all-lowercased host name

  • the token option

This source supports List Options when use_max_tag is set.

Check BitBucket

source = "bitbucket"

Check BitBucket for updates. The version returned is in date format %Y%m%d, e.g. 20130701, unless use_max_tag is used. See below.

bitbucket

The bitbucket repository, with author, e.g. lilydjwg/dotvim.

branch

Which branch to track? Default is the repository’s default.

use_max_tag

Set this to true to check for the max tag on BitBucket. Will return the biggest one sorted by old pkg_resources.parse_version. Will return the tag name instead of date.

max_page

How many pages do we search for the max tag? Default is 3. This works when use_max_tag is set.

This source supports List Options when use_max_tag is set.

Check GitLab

source = "gitlab"

Check GitLab for updates. The version returned is in date format %Y%m%d, e.g. 20130701, unless use_max_tag is used. See below.

gitlab

The gitlab repository, with author, e.g. Deepin/deepin-music.

branch

Which branch to track?

use_max_tag

Set this to true to check for the max tag on GitLab. Will return the biggest one sorted by old pkg_resources.parse_version. Will return the tag name instead of date.

host

Hostname for self-hosted GitLab instance.

token

GitLab authorization token used to call the API.

To set an authorization token, you can set:

  • a key named gitlab_{host} in the keyfile, where host is all-lowercased host name

  • the token option

This source supports List Options when use_max_tag is set.

Check PyPI

source = "pypi"

Check PyPI for updates.

pypi

The name used on PyPI, e.g. PySide.

use_pre_release

Whether to accept pre release. Default is false.

Check RubyGems

source = "gems"

Check RubyGems for updates.

gems

The name used on RubyGems, e.g. sass.

This source supports List Options.

Check NPM Registry

source = "npm"

Check NPM Registry for updates.

npm

The name used on NPM Registry, e.g. coffee-script.

To configure which registry to query, a source plugin option is available. You can specify like this:

[__config__.source.npm]
registry = "https://registry.npm.taobao.org"

Check Hackage

source = "hackage"

Check Hackage for updates.

hackage

The name used on Hackage, e.g. pandoc.

Check CPAN

source = "cpan"

Check MetaCPAN for updates.

cpan

The name used on CPAN, e.g. YAML.

Check Packagist

source = "packagist"

Check Packagist for updates.

packagist

The name used on Packagist, e.g. monolog/monolog.

Check crates.io

source = "cratesio"

Check crates.io for updates.

cratesio

The crate name on crates.io, e.g. tokio.

Check Local Pacman Database

source = "pacman"

This is used when you run nvchecker on an Arch Linux system and the program always keeps up with a package in your configured repositories for Pacman.

pacman

The package name to reference to.

strip_release

Strip the release part.

Check Arch Linux official packages

source = "archpkg"

This enables you to track the update of Arch Linux official packages, without needing of pacman and an updated local Pacman databases.

archpkg

Name of the Arch Linux package.

strip_release

Strip the release part, only return part before -.

provided

Instead of the package version, return the version this package provides. Its value is what the package provides, and strip_release takes effect too. This is best used with libraries.

Check Debian Linux official packages

source = "debianpkg"

This enables you to track the update of Debian Linux official packages, without needing of apt and an updated local APT database.

debianpkg

Name of the Debian Linux source package.

suite

Name of the Debian release (jessie, wheezy, etc, defaults to sid)

strip_release

Strip the release part.

Check Ubuntu Linux official packages

source = "ubuntupkg"

This enables you to track the update of Ubuntu Linux official packages, without needing of apt and an updated local APT database.

ubuntupkg

Name of the Ubuntu Linux source package.

suite

Name of the Ubuntu release (xenial, zesty, etc, defaults to None, which means no limit on suite)

strip_release

Strip the release part.

Check Repology

source = "repology"

This enables you to track updates from Repology (repology.org).

repology

Name of the project to check.

repo

Check the version in this repo. This field is required.

subrepo

Check the version in this subrepo. This field is optional. When ommited all subrepos are queried.

This source supports List Options.

Check Anitya

source = "anitya"

This enables you to track updates from Anitya (release-monitoring.org).

anitya

distro/package, where distro can be a lot of things like “fedora”, “arch linux”, “gentoo”, etc. package is the package name of the chosen distribution.

Check Android SDK

source = "android_sdk"

This enables you to track updates of Android SDK packages listed in sdkmanager --list.

android_sdk

The package path prefix. This value is matched against the path attribute in all <remotePackage> nodes in an SDK manifest XML. The first match is used for version comparisons.

repo

Should be one of addon or package. Packages in addon2-1.xml use addon and packages in repository2-1.xml use package.

channel

Choose the target channel from one of stable, beta, dev or canary. This option also accepts a comma-seperated list to pick from multiple channels. For example, the latest unstable version is picked with beta,dev,canary.

Check Sparkle framework

source = "sparkle"

This enables you to track updates of macOS applications which using Sparkle framework.

sparkle

The url of the sparkle appcast.

Check Pagure

source = "pagure"

This enables you to check updates from Pagure.

pagure

The project name, optionally with a namespace.

host

Hostname of alternative instance like src.fedoraproject.org.

This source returns tags and supports List Options.

Check APT repository

source = "apt"

This enables you to track the update of an arbitrary APT repository, without needing of apt and an updated local APT database.

pkg

Name of the APT binary package.

srcpkg

Name of the APT source package.

mirror

URL of the repository.

suite

Name of the APT repository release (jessie, wheezy, etc)

repo

Name of the APT repository (main, contrib, etc, defaults to main)

arch

Architecture of the repository (i386, amd64, etc, defaults to amd64)

strip_release

Strip the release part.

Note that either pkg or srcpkg needs to be specified (but not both) or the item name will be used as pkg.

Check Git repository

source = "git"

This enables you to check tags or branch commits of an arbitrary git repository, also useful for scenarios like a github project having too many tags.

git

URL of the Git repository.

use_commit

Return a commit hash instead of tags.

branch

When use_commit is true, return the commit on the specified branch instead of the default one.

When this source returns tags (use_commit is not true) it supports List Options.

Check container registry

source = "container"

This enables you to check tags of images on a container registry like Docker.

container

The path for the container image. For official Docker images, use namespace library/ (e.g. library/python).

registry

The container registry host. Default: docker.io

registry and container are the host and the path used in the pull command. Note that the docker command allows omitting some parts of the container name while this plugin requires the full name. If the host part is omitted, use docker.io, and if there is no slash in the path, prepend library/ to the path. Here are some examples:

Pull command

registry

container

docker pull quay.io/prometheus/node-exporter

quay.io

prometheus/node-exporter

docker pull nvidia/cuda

docker.io

nvidia/cuda

docker pull python

docker.io

library/python

This source returns tags and supports List Options.

Check ALPM database

source = "alpm"

Check package updates in a local ALPM database.

alpm

Name of the package.

repo

Name of the package repository in which the package resides. If not provided, nvchecker will search core, extra, community and multilib, in that order.

dbpath

Path to the ALPM database directory. Default: /var/lib/pacman. You need to update the database yourself.

strip_release

Strip the release part, only return the part before -.

provided

Instead of the package version, return the version this package provides. Its value is what the package provides, and strip_release takes effect too. This is best used with libraries.

Check Open Vsx

source = "openvsx"

Check Open Vsx for updates.

openvsx

The extension’s Unique Identifier on open-vsx.org, e.g. ritwickdey.LiveServer.

Check Visual Studio Code Marketplace

source = "vsmarketplace"

Check Visual Studio Code Marketplace for updates.

vsmarketplace

The extension’s Unique Identifier on marketplace.visualstudio.com/vscode, e.g. ritwickdey.LiveServer.

Combine others’ results

source = "combiner"

This source can combine results from other entries.

from

A list of entry names to wait results for.

format

A format string to combine the results into the final string.

Example:

[entry-1]
source = "cmd"
cmd = "echo 1"

[entry-2]
source = "cmd"
cmd = "echo 2"

[entry-3]
source = "combiner"
from = ["entry-1", "entry-2"]
format = "$1-$2"

Manually updating

source = "manual"

This enables you to manually specify the version (maybe because you want to approve each release before it gets to the script).

manual

The version string.

Extending

It’s possible to extend the supported sources by writing plugins. See How to develop a source plugin for nvchecker for documentation.