PackageManager demo¶

Let's use PackageManager to install the latest released version of the Digraphs package.

In [1]:

PackageInfo("digraphs")[1].Version;

Out[1]:

"0.15.2"

In [2]:

LoadPackage("PackageManager");

Out[2]:

true

In [3]:

InstallPackage("digraphs");

#I  Getting PackageInfo URLs...
#I  Created directory /home/gap/.gap/
#I  Created directory /home/gap/.gap/pkg/
#I  Retrieving PackageInfo.g from https://gap-packages.github.io/Digraphs/PackageInfo.g ...
#I  PackageInfo.g validated successfully
#I  Downloading archive from URL https://github.com/gap-packages/Digraphs/releases/download/v0.15.4/digraphs-0.15.4.tar.gz ...
#I  Saved archive to /tmp/tmEju2st/digraphs-0.15.4.tar.gz
#I  Extracting to /home/gap/.gap/pkg/digraphs-0.15.4 ...
#I  Extracted successfully
#I  Running compilation script on /home/gap/.gap/pkg/digraphs-0.15.4 ...
#I  Compilation was successful
#I  Checking dependencies for Digraphs...
#I    io >=4.5.1: true
#I    orb >=4.8.2: true
#I  Running compilation script on /home/gap/.gap/pkg/digraphs-0.15.4 ...
#I  Compilation was successful

Out[3]:

true

In [4]:

PackageInfo("digraphs")[1].Version;

Out[4]:

"0.15.4"

In [5]:

LoadPackage("digraphs");

Out[5]:

true

In [6]:

Digraph([[2], [3], [1]]);

Out[6]:

<digraph with 3 vertices, 3 edges>

Next, let's remove that package (the second argument disables interactivity):

In [7]:

RemovePackage("digraphs", false);

#I  Removed directory /home/gap/.gap/pkg/digraphs-0.15.4

Out[7]:

true

We can install the latest development version of a package from Github:

In [8]:

LoadPackage("Memoisation");

#I  memoisation package is not available. Check that the name is correct
#I  and it is present in one of the GAP root directories (see '??RootPaths')

Out[8]:

fail

In [9]:

InstallPackage("https://github.com/gap-packages/Memoisation.git");

#I  Cloning to /home/gap/.gap/pkg/Memoisation ...
#I  Package cloned successfully
#I  Checking dependencies for Memoisation...
#I    GAPDoc >= 1.6.1: true
#I    curlInterface >= 2.1: true
#I    io >= 4.0: true
#I    json >= 2.0: true
#I    crypting >= 0.8: true
#I  Running compilation script on /home/gap/.gap/pkg/Memoisation ...
#I  Compilation was successful

Out[9]:

true

In [10]:

LoadPackage("Memoisation");

Out[10]:

true

In [11]:

MemoisedFunction;

Out[11]:

function( func, args... ) ... end

To keep our installed package up to date, we can use UpdatePackage later:

In [12]:

UpdatePackage("Memoisation");

#I  Pulling from git repository...
#I  git: Already up to date.
#I  Running compilation script on /home/gap/.gap/pkg/Memoisation ...
#I  Compilation was successful

Out[12]:

true