# SlackBuilder

SlackBuilder is a tool which aims to help to update Slackware packages.
It checks for the latest version of an upstream package and can modify
SlackBuild meta information accordingly.

## Features

- Querying various sources (like registries) for the latest upstream version.
  Currently supported sources are:
  - GitHub
  - Packagist
  - Remote text file containing a version number (like the LATEST file).
- Updating package version and checksum in the .info file;
  Updating version variables in the .SlackBuild
- Updating packages with multiple sources. One source is assumed to be the main
  source and match the version of the package. Other sources are just updated to
  the latest version available for them.
- Modifying or just reuploading source tarballs to a different destination.
  SlackBuilder can download the original source tarball, optionally extract and
  modify its contents, and upload it to another server. It can be used for
  example to download package dependencies to ship them all within a single
  archive, so the package can be built offline.

## Build instructions

SlackBuilder is a Haskell program and can be built and run using the
Cabal build tool and package manager:

```sh
cabal build
```

After that you can run slackbuilder using Cabal and `cabal run slackbuilder`.
Or you can install the program locally with `cabal install` and run it just
as `slackbuilder` assuming `~/.cabal/bin` is on your PATH.

# Usage

## Configuration

There is a sample configuration file under `config/config.toml.example`.
The sample contains comments describing each supported option.
Just copy this file to `config/config.toml` and modify as needed.

Each package that should be updated automatically needs a special
description which contains links to the upstream repositories and
instructions how the sources should be prepared.

Unfortunately the only format currently supported for the package
descriptions is Haskell source code. But I'm planning to make it
possible to describe the packages without recompiling the slackbuilder
itself.

For the time being `src/Main.hs` contains descriptions of my
slackbuilds, that can be used as an example and a start point.

## Command line options

SlackBuilder is called with a command as its first argument:

```sh
slackbuilder COMMAND
```

Currently supported commands are listed below.

### check

`check` checks whether there are updates available. It prints the name of each
known package together with its version. If the package version is not the
latest known version, the version the package can be updated to is printed as
well.

### up2date

Performs the package updates for packages the can be updated. `up2date` accepts
an optional argument specifying the package that should be updated if only one
package should be updated and not all.