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A package manager for Agda

Project description

agda-pkg PyPI version Build Status

Agda-Pkg is a tool to manage Agda libraries with extra features like installing libraries from different kind of sources. This tool does not modify Agda at all, it just manages systematically the directory .agda and the files: .agda/defaults and .agda/libraries used by Agda to locate libraries. For more information about how Agda package system works, please read the official documentation here.

On agda/package-index, we are indexing some Agda libraries. To install a library run this command agda-pkg install LibraryName. Below, you will find other ways to install libraries.

$ apkg list 
Library name         Latest version  URL
---------------------------------------------------------------------------------------------------------
agda-base            v0.2            https://github.com/pcapriotti/agda-base.git
agda-categories      026658c         https://github.com/agda/agda-categories.git
agda-metis           v0.2.1          https://github.com/jonaprieto/agda-metis.git
agda-prelude         64b0eb2         https://github.com/UlfNorell/agda-prelude.git
agda-prop            v0.1.2          https://github.com/jonaprieto/agda-prop.git
agda-real            70b739a0        https://gitlab.com/pbruin/agda-real.git
agda-ring-solver     d1ed21c         https://github.com/oisdk/agda-ring-solver.git
agdarsec             v0.3.0          https://github.com/gallais/agdarsec.git
alga-theory          0fdb96c         https://github.com/algebraic-graphs/agda.git
ataca                a9a7c06         https://github.com/jespercockx/ataca.git
cat                  v1.6.0          https://github.com/fredefox/cat.git
cubical              v0.1            https://github.com/agda/cubical.git
FiniteSets           c8c2600         https://github.com/L-TChen/FiniteSets.git
fotc                 apia-1.0.2      https://github.com/asr/fotc.git
hott-core            1037d82         https://github.com/HoTT/HoTT-Agda.git
hott-theorems        1037d82         https://github.com/HoTT/HoTT-Agda.git
HoTT-UF-Agda         3bdfe5c         https://github.com/martinescardo/HoTT-UF-Agda-Lecture-Notes.git
lightweight-prelude  b2d440a         https://github.com/L-TChen/agda-lightweight-prelude.git
MtacAR               mtac1           https://github.com/L-TChen/MtacAR.git
plfa                 1dfd02f         https://github.com/plfa/plfa.github.io.git
routing-library      thesis          https://github.com/MatthewDaggitt/agda-routing.git
standard-library     v1.1            https://github.com/agda/agda-stdlib.git

agda package manager installation

Table of contents

Quick Start

To install agda-pkg, you must have installed Python 3.6+ or a latter version on your machine. In addition, the python package manager pip3 18.0+ (for python 3).

We have tested agda-pkg with Agda v2.5.4+.

To install this tool run the following command:

    $ pip install agda-pkg

Now, we can run the package manager using the command agda-pkg or even shorter just apkg.

Usage

Initialisation of the package index

The easiest way to install libraries is by using the package index. agda-pkg uses a local database to maintain a register of all libraries available in your system. To initialize the index and the database please run the following command:

    $ apkg init
    Indexing libraries from https://github.com/agda/package-index.git

Note. To use a different location for your agda files defaults and libraries, you can set up the environment variable AGDA_DIR before run apkg as follows:

    $ export AGDA_DIR=$HOME/.agda

Other way is to create a directory .agda in your directory and run agda-pkg from that directory. agda-pkg will prioritize the .agda directory in the current directory.

Help command

Check all the options of a command or subcommand by using the flag --help.

    $ apkg --help
    $ apkg install --help

Upgrade the package index

Recall updating the index every once in a while using upgrade.

    $ apkg upgrade
    Updating Agda-Pkg from https://github.com/agda/package-index.git

If you want to index your library go to the package index and make PR.

List all the packages available

To see all the packages available run the following command:

    $ apkg list

This command also has the flag --full to display a version of the this list with more details.

Installation of packages

Install a library is now easy. We have multiple ways to install a package.

agda package manager installation

    $ apkg install standard-library
    $ apkg install .

or even much simpler:

    $ apkg install

Installing a library creates a copy for agda in the directory assigned by agda-pkg. If you want your current directory to be taken into account for any changes use the --editable option. as shown below.

    $ apkg install --editable .
  • from a github repository
    $ apkg install --github agda/agda-stdlib --version v1.1
  • from a git repository
    $ apkg install http://github.com/jonaprieto/agda-prop.git

To specify the version of a library, we use the flag --version

    $ apkg install standard-library --version v1.0

Or simpler by using @ or == as it follows.

    $ apkg install standard-library@v1.0
    $ apkg install standard-library==v1.0

Multiple packages at once

To install multiple libraries at once, we have two options:

  1. Using the inline method
    $ apkg install standard-library agda-base

Use @ or == if you need a specific version, see above examples.

  1. Using a requirement file:

Generate a requirement file using apkg freeze:

    $ apkg freeze > requirements.txt
    $ cat requirements.txt
    standard-library==v1.1

Now, use the flag -r to install all the listed libraries in this file:

    $ apkg install -r requirements.txt

Check all the options of this command with the help information:

    $ apkg install --help

Uninstalling a package

Uninstalling a package will remove the library from the visible libraries for Agda.

  • using the name of the library
    $ apkg uninstall standard-library
  • infering the library name from the current directory
    $ apkg uninstall .

And if we want to remove the library completely (the sources and everything), we use the flag --remove-cache.

    $ apkg uninstall standard-library --remove-cache

Update a package to latest version

We can get the latest version of a package from the versions registered in the package-index.

  • Update all the installed libraries:
    $ apkg update
  • Update a specific list of libraries. If some library is not installed, this command will installed the latest version of it.
    $ apkg update standard-library agdarsec

See packages installed

    $ apkg freeze
    standard-library==v1.1

This command is useful to keep in a file the versions used for your project to install them later.

    $ apkg freeze > requirements.txt

To install from this requirement file run this command.

    $ apkg install < requirements.txt

Approximate search of packages

We make a search (approximate) by using keywords and title of the packages from the index. To perform such a search, see the following example:

    $ apkg search metis
    1 result in 0.0012656739999998834seg
    cubical
    url: https://github.com/agda/cubical.git
    installed: False

Get all the information of a package

    $ apkg info cubical

Creating a library for Agda-Pkg

In this section, we describe how to build a library.

To build a project using agda-pkg, we just run the following command:

    $ apkg create

Some questions are going to be prompted in order to create the necessary files for Agda and for Agda-Pkg.

The output is a folder like the following showed below.

Directory structure of an agda library

A common Agda library has the following structure:

$ tree -L 1 mylibrary/
mylibrary/
├── LICENSE
├── README.md
├── mylibrary.agda-lib
├── mylibrary.agda-pkg
├── src
└── test

2 directories, 3 files

.agda-lib library file

$ cat mylibrary.agda-lib
name: mylibrary  -- Comment
depend: LIB1 LIB2
  LIB3
  LIB4
include: PATH1
  PATH2
  PATH3

.agda-pkg library file

This file only works for agda-pkg. The idea of this file is to provide more information about the package, pretty similar to the cabal files in Haskell. This file has priority over its version .agda-lib.

$ cat mylibrary.agda-pkg
name:              mylibrary
version:           v0.0.1
author:            
    - AuthorName1
    - AuthorName2
category:          cat1, cat2, cat3
homepage:          http://github.com/user/mylibrary
license:           MIT
license-file:      LICENSE.md
source-repository: http://github.com/user/mylibrary.git
tested-with:       2.6.0
description:       Put here a description.

include:
    - PATH1
    - PATH2
    - PATH3
depend:
    - LIB1
    - LIB2
    - LIB3
    - LIB4

About

This is a proof of concept of an Agda Package Manager. Any contribution or feedback to improve this work is very welcomed.

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